CN118309434A - Protection system for cross section of open cut tunnel and existing subway - Google Patents
Protection system for cross section of open cut tunnel and existing subway Download PDFInfo
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- CN118309434A CN118309434A CN202410744801.2A CN202410744801A CN118309434A CN 118309434 A CN118309434 A CN 118309434A CN 202410744801 A CN202410744801 A CN 202410744801A CN 118309434 A CN118309434 A CN 118309434A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 110
- 239000010959 steel Substances 0.000 claims abstract description 110
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 21
- 210000001503 joint Anatomy 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 9
- 239000002002 slurry Substances 0.000 description 8
- 239000002689 soil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003631 expected effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Soil Sciences (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a protection system for an intersection section of an open cut tunnel and an existing subway, which relates to the technical field of tunnel construction and comprises a pipe curtain arranged between the open cut tunnel and the existing subway, wherein the pipe curtain comprises a plurality of steel pipe bodies arranged in parallel and steel pipe locking openings arranged on the steel pipe bodies, each steel pipe locking opening comprises a first locking opening part and a second locking opening part which are respectively arranged on two sides of the same steel pipe body, when the two steel pipe bodies are connected, the first locking opening part and the second locking opening part are connected in a sliding manner, the second locking opening part is completely contained by the first locking opening part, a plurality of pairs of mutually symmetrical abutting rods are arranged on the side walls of two sides of the first locking opening part, and the abutting rods are in two states; when the abutting rod is positioned in the first locking port part, the first locking port part and the second locking port part are flexibly connected; when the abutting rod abuts against the outer wall of the second locking port part, the first locking port part and the second locking port part are rigidly connected; the connection mode of the steel pipe body is changed, and the efficiency of pipe curtain construction is improved.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a protection system for an intersection section of an open cut tunnel and an existing subway.
Background
The well-known pipe curtain construction method is based on single pipe jacking, all single pipes are connected with each other at the side surfaces of the steel pipes by means of locking openings to form a pipe row connected into a whole, and lubricating water-stopping slurry is coated in advance at the connecting position of the locking openings, and the slurry can initially play a role in reducing the jacking friction resistance of the single pipes, and can solidify and seal water seepage paths among the single pipes when meeting water after jacking. And after the jacking of the tube bank is finished, forming a tube curtain. The pipe curtain can be formed into various shapes, such as semicircle, round, square, etc., according to the section construction form of the internal structure and the geological conditions. The temporary soil retaining structure formed by the relatively rigid steel pipes can reduce disturbance to adjacent soil bodies during excavation and correspondingly reduce deformation of surrounding soil bodies, so that the purposes of not affecting ground movement during excavation and maintaining normal use functions of an upper building and a pipeline of the pipe curtain structure are achieved.
In the box culvert jacking construction process, the waterproof design of the whole internal structure is very important. Waterproof important node mainly includes the waterproof, the waterproof in the middle of the box culvert of seam between the box culvert, the waterproof etc. content of box culvert hole, and the box culvert seam mostly adopts the design thought of induced seam, and the seam is just partly reinforcing bar intercommunication promptly, sets up buried waterstop, water-swelling rubber strip in the seam between, forms the sealed waterproof line that two pockets become the ring, and in addition roof, bottom plate, side wall add shear force pole to improve the shear capacity between the box culvert. However, after the jacking of the second section of box culvert is finished, abnormal conditions occur in the construction site, namely the posture of the notch of the grid tool pipe is declined, the ground subsidence is obviously increased, the jacking force required by the box culvert is obviously increased, and the investigation finds that too low soil intensity below the bottom calandria curtain is a main reason for causing the declining of the notch of the grid tool pipe (also possibly caused by the fact that the bottom end of the bottom calandria curtain is provided with an existing subway tunnel, so that the soil intensity below the bottom calandria curtain is too low). At this time, the joints of the box culvert are required to be changed into rigid connection from semi-rigid (induction joints), so that the joints of the box culvert are not sunk or declined any more, and the connection strength of the joints of the box culvert is improved.
In the prior art, when a pipe curtain is constructed, a plurality of steel pipes are connected, the change of construction conditions is difficult to completely predict, when flexible connection is adopted, if the joint of the steel pipes sags, the flexible connection cannot achieve the expected effect, at the moment, the treatment method in the prior art has two methods, namely, the joint of the steel pipes needs to be modified into rigid connection, and constructors insert reinforcing steel bars into the joint of the steel pipes, so that the joint of the steel pipes does not sag any more; secondly, a new steel pipe is needed to be inserted into the steel pipe, so that the steel pipe is prevented from sinking; both construction modes are time-consuming and labor-consuming, and the soil layer at the bottom end of the pipe curtain is affected.
Disclosure of Invention
The invention aims to provide a protection system for an intersection section of an open cut tunnel and an existing subway, so as to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
The utility model provides an on open cut tunnel with present subway interlude protection system, includes the pipe curtain that sets up between open cut tunnel and present subway, the pipe curtain includes a plurality of steel pipe bodies that set up side by side and sets up the steel pipe fore shaft on the steel pipe body, the steel pipe fore shaft is including arranging in respectively same first locking part and the second locking part of steel pipe body both sides, when two steel pipe body are connected, first locking part and second locking part sliding connection each other, and the second locking part is contained by first locking part is complete, be provided with two pairs of butt tight poles of mutual symmetry on the both sides lateral wall of first locking part, butt tight pole exists two kinds of states;
When the abutting rod is positioned in the first locking port part, the first locking port part and the second locking port part are flexibly connected;
when the abutting rod abuts against the outer wall of the second locking port part, the first locking port part and the second locking port part are rigidly connected.
The above-mentioned, set up many pairs of two mutual symmetries square grooves on the inner wall of first locking oral area, each in the square groove each slidable mounting support tight pole, each support tightly to be connected through a first elastic component between pole and the square groove inner wall rather than corresponding, each support tightly to be offered a jack on the pole, the portion that just is located between two square grooves of a set of symmetry on the inner wall of first locking oral area has offered many pairs of two mutual symmetries spout, each in the spout each slidable mounting have a locking lever, each the locking lever inserts in the jack to support tightly the pole spacing.
Above-mentioned, a flat groove has respectively been seted up to the part that lies in between two spouts of same group mutual symmetry on the first locking portion, and flat groove and rather than the spout intercommunication that corresponds each other, and two of same group mutual symmetry all seted up the latch on the opposite face of locking lever, each flat inslot just lie in two of same group mutual symmetry part between the locking lever is respectively rotated and is installed a drive gear, and drive gear meshes with two rows of latches simultaneously.
And the driven rods are respectively arranged on the locking rods and are slidably arranged in the flat grooves, and the driven rods and the inner walls of the flat grooves are connected through a second elastic piece.
Above-mentioned, second fore shaft portion includes oval shaped plate and connecting rod, the connecting rod is connected on steel pipe body outer wall, is provided with oval shaped plate on the connecting rod, and oval shaped plate sets up in first fore shaft portion, is provided with multiunit mutual symmetry's poking rod on the oval shaped plate outer wall, and each poking rod and rather than the driven lever that corresponds mutually support and use.
Above-mentioned, the symmetry is provided with two draw-in grooves on two lateral walls of the open position of first locking oral area, two respectively sliding seal installs a driven plate in the draw-in groove, and is respectively be connected through a third elastic component between driven plate and the draw-in groove inner wall, the connecting rod is located the clearance between two driven plates, and driven plate and connecting rod support tightly each other.
The above-mentioned, each respectively offer a recess on the square groove inner wall, each in the recess each slidable mounting have a locating plate, each on the locating plate all be provided with a plurality of first triangle teeth, each on support tight pole all offered a plurality of second triangle teeth, and mutually support between first triangle tooth and the second triangle tooth and use, each locating plate is connected through the fourth elastic component between rather than the recess inner wall that corresponds.
Above-mentioned, a plurality of feed channels have evenly been seted up along its axial direction on the second locking portion.
Each feeding channel is internally provided with a feeding pipe in a sliding manner.
Above-mentioned, each the feeding pipe fitting is located the one end in the first locking portion and respectively is provided with a propelling movement ball, a plurality of auxiliary grooves have evenly been seted up along the axial direction of steel pipe body on the inner wall in the middle of the first locking portion, and each the both sides in auxiliary groove all communicate with each other with the flat groove of both sides, and each the auxiliary inslot is respectively slided and is provided with an auxiliary block, and each auxiliary groove and the part that the flat groove communicates each other are provided with a wire rope, and each auxiliary block's both sides are connected respectively in wire rope's one end, and each wire rope's the other end is connected with the driven lever.
The invention has the beneficial effects that: when the steel pipe bodies of the pipe curtain are required to be flexibly connected, the abutting rod is positioned in the first locking port part, so that the flexible connection of the first locking port part and the second locking port part can be realized; when the steel pipe bodies of the pipe curtain need to be rigidly connected, the driving abutting rod abuts against the outer wall of the second locking opening, so that the abutting rod limits the movement of the second locking opening, the rigid connection of the first locking opening and the second locking opening is realized, the connection mode between the two steel pipe bodies can be quickly solved through the change of the connection mode between the first locking opening and the second locking opening, and the construction efficiency of the pipe curtain is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic view of a partial cross-sectional structure of the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of a steel pipe body in a rotated state according to the present invention;
FIG. 3 is a schematic view of the sectional structure of the invention at K of FIG. 1, partially enlarged;
FIG. 4 is a schematic view of a partially enlarged cross-sectional structure at L of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of a partially enlarged cross-sectional structure at M of FIG. 3 according to the present invention;
fig. 6 is a partially enlarged cross-sectional view of fig. 2 at N in accordance with the present invention.
Reference numerals illustrate:
1. A steel pipe body; 2. a first locking part; 3. a second locking part; 4. a tightening rod; 5. a square groove; 6. a first elastic member; 7. a jack; 8. a chute; 9. a locking lever; 10. a flat groove; 11. a transmission gear; 12. a driven rod; 13. a second elastic member; 14. an elliptical plate; 15. a connecting rod; 16. a toggle rod; 17. a clamping groove; 18. a driven plate; 19. a third elastic member; 20. a groove; 21. a positioning plate; 22. a first triangular tooth; 23. a second triangular tooth; 24. a fourth elastic member; 25. a feed tube; 26. pushing the ball; 27. an auxiliary groove; 28. an auxiliary block; 29. a wire rope; 30. an abutment groove; 31. square rods; 32. a straight rod; 33. a flat bar; 34. a fifth elastic member; 35. a locking groove; 36. triangular blocks; 37. a sixth elastic member; 38. a butt joint rod; 39. and (5) butting holes.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
In the embodiments of the present invention, the azimuth terms in this embodiment are based on convenience of description and understanding, not limitation of rights: the references to "center", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "transverse", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
As shown in fig. 1 to 6, the protection system for the intersection section of the open-cut tunnel and the existing subway provided by the embodiment of the invention comprises a pipe curtain arranged between the open-cut tunnel and the existing subway, wherein the pipe curtain comprises a plurality of steel pipe bodies 1 arranged in parallel and steel pipe locking openings arranged on the steel pipe bodies 1, each steel pipe locking opening comprises a first locking opening 2 and a second locking opening 3 which are respectively arranged on two sides of the same steel pipe body 1, when the two steel pipe bodies 1 are connected, the first locking opening 2 and the second locking opening 3 are mutually connected in a sliding manner, the second locking opening 3 is completely contained by the first locking opening 2, a plurality of pairs of mutually symmetrical abutting rods 4 are arranged on the side walls of two sides of the first locking opening 2, and the abutting rods 4 are in two states;
When the abutting rod 4 is positioned inside the first locking part 2, the first locking part 2 and the second locking part 3 are flexibly connected;
When the abutment lever 4 abuts against the outer wall of the second locking portion 3, the first locking portion 2 and the second locking portion 3 are rigidly connected.
Specifically, the pipe curtain method is a common construction method of large-section underground tunnels in the world, and has the advantage of being capable of constructing large-section tunnels with complex sections by using miniaturized equipment. The pipe curtain method is to push the pipe made of steel pipe or other material around the underground building to be built by micro pipe jacking technology. The steel pipes are connected by the lock and are injected with waterproof materials to form a watertight underground space, underground buildings can be built in the watertight underground space, the pipe curtain construction can ensure that the use function of ground traffic is not affected when the underground buildings are constructed, the ground subsidence is small, and the influence on underground pipelines and surrounding buildings in a construction area can be reduced to the greatest extent. the pipe curtain can be regarded as a horizontally paved steel pipe pile, when the pipe curtain is constructed, the steel pipe body 1 is inserted into a tunnel face (the tunnel face is also called tunnel face and is a working face which is continuously pushed forward in excavation, coal mining, mining or tunnel engineering), the connecting part of the first locking part 2 and the steel pipe body 1 is square, the sliding connecting part of the first locking part 2 and the second locking part 3 is circular, an opening is arranged on one side of the circular part of the first locking part 2, which is close to the second locking part 3, the opening part of the first locking part 2 is sheathed with the second locking part 3 in a sliding way, one end of the second locking part 3, which is connected with the steel pipe body, is a rod piece, the rod piece of the second locking part 3 is an opening penetrating through the first locking part 2, the part of the second lock opening part 3 which is completely contained by the first lock opening part 2 is a sliding part, and the sliding part of the second lock opening part 3 is completely contained by the annular part of the first lock opening part 2, so that the first lock opening part 2 and the second lock opening part 3 can be mutually in sliding sleeve joint, a certain degree of freedom exists between the first lock opening part 2 and the second lock opening part 3 (the connection between the first lock opening part 2 and the second lock opening part 3 is similar to the connection mode of a pin and a box, one contained part is called a male head, the other is called a female head, but the groove body of the female head has larger volume than the male head, so that the connection between the pin and the box has larger degree of freedom, and the pin and the box cannot be separated after being mutually connected), a plurality of pairs of two mutually symmetrical abutting rods 4 are slidably disposed on the top and bottom sides of the opening of the first lock port portion 2 (i.e., the top side of the first lock port portion 2 is uniformly provided with the abutting rods 4 along the linear direction thereof; The bottom side of the first locking part 2 is uniformly provided with a supporting rod 4 along the linear direction, the supporting rod 4 is mutually symmetrical with respect to the opening position of the first locking part 2, the steel pipe body 1 is provided with mutually connected steel pipe locking openings, the two steel pipe bodies 1 are connected through the mutual sliding sleeve joint of the first locking part 2 and the second locking part 3 on the two steel pipe bodies 1, as the second locking part 3 is completely contained by the first locking part 2, a certain degree of freedom exists in the two mutually connected steel pipe bodies 1, at the moment, the supporting rod 4 is positioned in the first locking part 2, the two mutually connected steel pipe bodies 1 are flexibly connected, namely, a certain degree of freedom exists between the two mutually connected steel pipe bodies 1, So that the two steel pipe bodies 1 which are connected with each other can perform relative movement; When the two steel pipe bodies 1 connected with each other incline or decline, at the moment, the flexible connection between the two steel pipe bodies 1 connected with each other needs to be changed into rigid connection, so that the connection between the steel pipe bodies 1 is more stable, the steel pipe bodies 1 are prevented from declining, at the moment, the groups of the abutting rods 4 are synchronously driven, the groups of the abutting rods 4 are abutted against the second locking part 3 or the steel pipe bodies 1, the two steel pipe bodies 1 are not rotated or declined any more through the abutting of the groups of the abutting rods 4, as a plurality of pairs of the mutually symmetrical abutting rods 4 are arranged on the top side and the bottom side of the opening of the first locking part 2 in a sliding way, the connecting parts of the two steel pipe bodies 1 are abutted against the outer wall of the second locking part 3 due to the abutting rods 4, The first locking part 2 and the second locking part 3 cannot rotate and incline again, at the moment, the first locking part 2 and the second locking part 3 are rigidly connected, so that tunnel engineering can be constructed safely, in the prior art, when a pipe curtain is constructed, a plurality of steel pipes are connected, the change of construction conditions is difficult to completely predict, when flexible connection is adopted, if the joint of the steel pipes sags, the flexible connection cannot achieve the expected effect, at the moment, the processing method in the prior art has two steps, firstly, the joint of the steel pipes needs to be modified into rigid connection, and constructors insert reinforcing steel bars into the joint of the steel pipes, so that the joint of the steel pipes does not sag any more; Secondly, a new steel pipe is needed to be inserted into the steel pipe, so that the steel pipe is prevented from sinking; the two construction modes are time-consuming and labor-consuming and affect the soil layer at the bottom end of the pipe curtain, and in the embodiment, when flexible connection is needed between the steel pipe bodies 1 of the pipe curtain, the supporting rod 4 is positioned inside the first locking port part 2, so that flexible connection of the first locking port part 2 and the second locking port part 3 can be realized; when the steel pipe body 1 of the pipe curtain needs to be rigidly connected, the driving abutting rod 4 abuts against the outer wall of the second locking opening part 3, so that the abutting rod 4 limits the movement of the second locking opening part 3, the rigid connection of the first locking opening part 2 and the second locking opening part 3 is realized, the connection mode between the two steel pipe bodies 1 can be quickly solved through the change of the connection mode between the first locking opening part 2 and the second locking opening part 3, and the pipe curtain construction efficiency is improved.
Further, a plurality of pairs of square grooves 5 which are symmetrical to each other are formed in the inner wall of the first locking portion 2, a tightening rod 4 is slidably mounted in each square groove 5, each tightening rod 4 is connected with the inner wall of the corresponding square groove 5 through a first elastic piece 6, each tightening rod 4 is provided with an insertion hole 7, a plurality of pairs of sliding grooves 8 which are symmetrical to each other are formed in the inner wall of the first locking portion 2 and are positioned between a group of two square grooves 5, a locking rod 9 is slidably mounted in each sliding groove 8, and each locking rod 9 is inserted into the insertion hole 7 to limit the tightening rod 4.
Specifically, when the locking lever 9 is inserted into the insertion hole 7, the first elastic member 6 (the first elastic member 6 is an element capable of performing telescopic reset, preferably a spring) is in a compressed state, and the abutting lever 4 is located inside the first locking portion 2, and the first locking portion 2 and the second locking portion 3 are flexibly connected; when the abutting rod 4 needs to be driven to move and abut against the outer wall of the second locking port 3, the locking rod 9 is driven to slide out of the insertion hole 7, so that the locking rod 9 does not lock the abutting rod 4 any more, under the rebound action of the first elastic piece 6, the first elastic piece 6 pushes the abutting rod 4 to abut against the outer wall of the second locking port 3, and because the abutting rod 4 is arranged at the top side and the bottom side of the opening of the first locking port 2 in a plurality of groups and symmetrically, the abutting rod 4 abuts against the outer wall of the second locking port 3, so that the first locking port 2 and the second locking port 3 are mutually locked (namely, the outer part of the second locking port 3 is abutted against by the plurality of groups of mutually symmetrical abutting rods 4 of the first locking port 2, so that the second locking port 3 does not move any more), at this moment, the first locking port 2 and the second locking port 3 are rigidly connected, so that the connection between the steel pipe body 1 is more firmly prevented from tilting down, and the tunnel construction is better protected.
Further, a flat groove 10 is formed in a portion, located between the two symmetrical sliding grooves 8 of the same group, of the first locking portion 2, the flat groove 10 is communicated with the corresponding sliding groove 8, latch teeth are formed on opposite faces of the two symmetrical locking bars 9 of the same group, a transmission gear 11 is rotatably mounted in each flat groove 10 and located between the two symmetrical locking bars 9 of the same group, and the transmission gear 11 is meshed with two rows of latch teeth simultaneously; each locking rod 9 is provided with a driven rod 12, each driven rod 12 is slidably arranged in the flat groove 10, and each driven rod 12 is connected with the inner wall of the flat groove 10 through a second elastic piece 13; the second locking part 3 comprises an elliptic plate 14 and a connecting rod 15, the connecting rod 15 is connected to the outer wall of the steel pipe body 1, the elliptic plate 14 is arranged on the connecting rod 15, the elliptic plate 14 is arranged in the first locking part 2, a plurality of groups of mutually symmetrical poking rods 16 are arranged on the outer wall of the elliptic plate 14, and the poking rods 16 are mutually matched with the corresponding driven rods 12.
Specifically, when the locking rod 9 is inserted into the jack 7, under the action of the elastic force of the second elastic piece 13, the driven rod 12 drives the locking rod 9 to be inserted into the jack 7, so that the locking rod 9 performs stable locking operation on the abutting rod 4, and at the moment, the abutting rod 4 is positioned in the first locking part 2, and the first locking part 2 and the second locking part 3 are flexibly connected; when the steel pipe body 1 is declined, the relative motion occurs between two mutually connected steel pipe bodies 1 at this moment, the second locking part 3 rotates in the first locking part 2 (namely, the connecting rod 15 and the oval plate 14 rotate in the first locking part 2), the oval plate 14 drives the stirring rod 16 to rotate, the stirring rod 16 drives the driven rod 12 to slide in the flat groove 10 during rotation, the driven rod 12 drives the locking rod 9 to slide in the sliding groove 8, the locking rod 9 slides out of the jack 7, meanwhile, the locking rod 9 drives the transmission gear 11 to rotate through the clamping teeth, the transmission gear 11 drives the other locking rod 9 to synchronously slide out of the jack 7, the locking rod 9 can simultaneously release the locking operation on the abutting rod 4, and meanwhile, the locking rod 9 extrudes the second elastic piece 13 (the second elastic piece 13 is an element capable of stretching and resetting, preferably a spring) so that the second elastic piece 13 is in a compressed state, the locking rod 9 does not lock the abutting rod 4 any more, under the rebound effect of the first elastic piece 6, the first elastic piece 6 pushes the second elastic piece 4 to slide out of the jack 7, the locking rod 3 is connected with the second steel pipe 1, the tunnel mouth 3 is prevented from being connected with the outer wall of the tunnel body 1 more firmly, and the locking part 1 is prevented from being connected with the second steel pipe body.
Preferably, two clamping grooves 17 are symmetrically arranged on two side walls of the opening position of the first locking part 2, a driven plate 18 is installed in each clamping groove 17 in a sliding sealing manner, each driven plate 18 is connected with the inner wall of each clamping groove 17 through a third elastic piece 19, the connecting rod 15 is located in a gap between the two driven plates 18, and the driven plates 18 and the connecting rod 15 are mutually abutted.
Specifically, when the first locking portion 2 and the second locking portion 3 are flexibly connected, the elliptical plate 14 and the connecting rod 15 are movably connected, the connecting rod 15 extrudes the driven plate 18, so that the driven plate 18 slides in the clamping groove 17, the connecting rod 15 is positioned in a gap between the two driven plates 18 due to sliding sealing connection between the driven plate 18 and the clamping groove 17, under the telescopic action of the third elastic piece 19 (the third elastic piece 19 is an element capable of performing telescopic reset, preferably a spring), the driven plate 18 and the connecting rod 15 are always in a tight-abutting connection state, water seepage phenomenon cannot occur in the driven plate 18, the connecting rod 15 and the first locking portion 2, and when the first locking portion 2 and the second locking portion 3 are flexibly connected, the connection position of the first locking portion 2 and the second locking portion 3 is sealed well, and water seepage phenomenon cannot occur.
In one embodiment of the present invention, a groove 20 is formed on the inner wall of each square groove 5, a positioning plate 21 is slidably mounted in each groove 20, a plurality of first triangular teeth 22 are disposed on each positioning plate 21, a plurality of second triangular teeth 23 are formed on each tightening rod 4, the first triangular teeth 22 and the second triangular teeth 23 are matched with each other, and each positioning plate 21 is connected with the inner wall of the corresponding groove 20 through a fourth elastic member 24.
Specifically, when the locking lever 9 no longer locks the abutment lever 4, under the resilience of the first elastic member 6, the first elastic member 6 pushes the abutment lever 4 to abut against the outer wall of the second locking portion 3, because the elastic force of the first elastic member 6 is large, and the inclined surface of the second triangular tooth 23 on the abutment lever 4 and the inclined surface of the first triangular tooth 22 on the positioning plate 21 are opposite to each other (i.e., during the movement of the abutment lever 4 in the square groove 5 toward the end near the second locking portion 3, the inclined surface of the second triangular tooth 23 is firstly in contact with the inclined surface of the first triangular tooth 22), and during the abutment process of the second triangular tooth 23 and the first triangular tooth 22, the positioning plate 21 slides toward the inner end of the groove 20 under the abutment pushing action of the second triangular tooth 23, so that the positioning plate 21 is capable of performing telescopic reset on the fourth elastic member 24 (the fourth elastic member 24 is a member 24, preferably a spring), when the second triangular tooth 23 and the first triangular tooth 22 slide away from each other, under the rebound action of the fourth elastic member 24, the first triangular tooth 22 on the positioning plate 21 abuts against the outer wall of the abutting rod 4 (that is, the second triangular tooth 23 on the abutting rod 4 abuts against the positioning plate 21), at this time, the second triangular tooth 23 and the first triangular tooth 22 abut against each other to limit, so that the positioning plate 21 and the first triangular tooth 22 slide and position the abutting rod 4, so that the abutting rod 4 does not slide towards one end inside the square groove 5 after abutting against the outer wall of the steel pipe body 1 or the second locking part 3, and perform stable positioning operation on the abutting rod 4, at this time, the first locking part 2 and the second locking part 3 are rigidly connected, so that the connection between the steel pipe body 1 is more stable, and the steel pipe body 1 is prevented from declining, carry out better protection to tunnel construction, because support and seal the setting between the inner wall of one end that tight pole 4 is close to the steel pipe body and square groove 5, and the tight part of support of second triangle tooth 23 and first triangle tooth 22 is sealed the setting, can set up the sealing strip at the butt part of second triangle tooth 23 and first triangle tooth 22 for the sealing performance of the butt part of second triangle tooth 23 and first triangle tooth 22 is strengthened, can not influence subsequent concrete filling construction.
In another embodiment of the present invention, the second locking portion 3 is uniformly provided with a plurality of feeding channels along the axial direction thereof; a feeding pipe fitting 25 is slidably arranged in each feeding channel; one end of each feeding pipe fitting 25 located in the first locking part 2 is provided with a pushing ball 26, a plurality of auxiliary grooves 27 are uniformly formed in the inner wall in the middle of the first locking part 2 along the axial direction of the steel pipe body 1, two sides of each auxiliary groove 27 are mutually communicated with the flat grooves 10 on two sides of the auxiliary groove 27, an auxiliary block 28 is slidably arranged in each auxiliary groove 27, a steel wire rope 29 is arranged at each part of the mutually communicated auxiliary groove 27 and the flat groove 10, two sides of each auxiliary block 28 are respectively connected to one end of the steel wire rope 29, and the other end of each steel wire rope 29 is connected with the driven rod 12.
Specifically, after each steel pipe body 1 is required to be connected through the first locking portion 2 and the second locking portion 3, concrete slurry is required to be poured into and tamped into the steel pipe body 1, the first locking portion 2 and the second locking portion 3, so that the strength and the rigidity of the steel pipe body 1 are increased, and a filling tool (such as: concrete pump) firstly fills concrete slurry into the first locking part 2 and the second locking part 3 through the feeding pipe fitting 25, when the concrete slurry enters the first locking part 2 through the feeding pipe fitting 25, the concrete slurry has a certain pushing action on the feeding pipe fitting 25 (a pushing ball 26 seals the end part of the feeding pipe fitting 25 so as to have the pushing action, a discharge hole is arranged on the side wall of the feeding pipe fitting 25), the feeding pipe fitting 25 slides towards one end close to the first locking part 2, the feeding pipe fitting 25 drives the pushing ball 26 to slide towards one end close to the first locking part 2, the pushing ball 26 slides towards one end in an auxiliary groove 27, the auxiliary block 28 pulls a steel wire rope 29, the steel wire rope 29 drives a driven rod 12 and a locking rod 9 to slide out of the jack 7, so that the locking rod 9 does not perform positioning operation on the abutting rod 4 any more, the driven rod 12 is not contacted with the driven rod 12 when the driving rod 16 is driven by the driving plate 14, the driving rod 12 is not driven to drive the locking rod 9 to slide out of the jack 7, the driven rod 9 can be driven by the steel pipe body 1, the locking rod 9 can be driven by the locking rod 9 and the locking rod 9 is not driven by the locking rod 9 when the driving the steel pipe body 1 rotates, the locking rod 9 is driven by the driving rod 9 to slide out of the locking rod 9 or the locking rod 4 is driven by the locking rod 9 to slide out of the locking rod 4, at this time, the first locking part 2 and the second locking part 3 are rigidly connected, so that the connection between the steel pipe bodies 1 is more stable, the steel pipe bodies 1 are prevented from declining, and the tunnel construction is better protected.
In another embodiment of the present invention, two symmetrical abutting grooves 30 are formed on two sides of each feeding channel, a square rod 31 is slidably mounted in each abutting groove, each square rod 31 is connected with the outer wall of the corresponding feeding pipe 25, a straight rod 32 is fixedly mounted on each square rod 31, a flat rod 33 is slidably mounted on each straight rod 32, and each flat rod 33 is connected with each straight rod 32 through a fifth elastic member 34.
Specifically, when the feeding pipe fitting 25 receives the pushing action of concrete slurry filling, the feeding pipe fitting 25 drives the square rod 31 to move towards the end close to the first locking opening 2, the square rod 31 drives the straight rod 32 to move towards the end close to the first locking opening 2, the straight rod 32 drives the flat rod 33 to move towards the end close to the first locking opening 2 until the flat rod 33 abuts against the outer wall of the first locking opening 2, and because the sliding parts of the straight rod 32 and the flat rod 33 are provided with the fifth elastic piece 34 (the fifth elastic piece 34 is an element capable of performing telescopic reset, preferably a spring), under the telescopic action of the fifth elastic piece 34, the straight rod 32 and the flat rod 33 perform abutting operation on the first locking opening 2, and at the moment, the first locking opening 2 and the second locking opening 3 are rigidly connected, so that the connection between the steel pipe body 1 is more stable, the steel pipe body 1 is prevented from declining, and tunnel construction is better protected.
In still another embodiment of the present invention, each square bar 31 is provided with a locking groove 35, two inner walls on two sides of each locking groove 35 are slidably provided with a triangular block 36, each triangular block 36 is connected with the inner wall of the locking groove 35 through a sixth elastic member 37, a pair of connecting bars 38 are respectively provided on the inner wall of each abutting groove 30, two mutually symmetrical abutting holes 39 are respectively provided on two side walls of each abutting bar 38, and each abutting hole 39 is respectively matched with the corresponding abutting bar 38.
Specifically, the feeding pipe fitting 25 receives the propulsion effect when concrete slurry fills, the feeding pipe fitting 25 drives square rod 31 to be close to first locking oral part 2 one end motion, square rod 31 drives triangular block 36 to be close to first locking oral part 2 one end motion, until triangular block 36 inserts in the butt joint hole 39 on butt joint rod 38, under the resilience effect of sixth elastic piece 37 (sixth elastic piece 37 is the component that can stretch out and draw back, preferably the spring), triangular block 36 inserts in butt joint hole 39, make square rod 31 and butt joint rod 38 interconnect location, make square rod 31 and feeding pipe fitting 25 can not keep away from first locking oral part 2 one end and slide, make feeding pipe fitting 25 obtain stable location operation, in step, feeding pipe fitting 25 slides auxiliary block 28 to auxiliary groove 27 inside one end through pushing ball 26, auxiliary block 28 pulls wire rope 29, make wire rope 29 drive driven rod 12 and locking rod 9 play jack 7 this moment, make locking rod 9 no longer carry out location operation to butt joint rod 4, first locking oral part 2 and second locking oral part 3 make rigid connection body, make down the square rod 31 and feeding pipe fitting 2, the tie-down joint rod 3, the tie-rod 3 is more stable, the tie-down joint rod 3 is realized, the tie-rod 3, the tie-down rod 3 is more is arranged to the locking oral part 2, the tie-down rod 3, the tie-rod 3 is more stable is arranged, the tie-down rod 3 is more stable, the joint rod 3 is more stable is arranged to the locking rod 3, the tie-rod 3 is more 3, the tie-rod 3 is used for the locking rod 3, the tie-rod is used for the tie-rod is 3, the tie rod is used for the tie rod is 3 is used to the steel rod 9, the steel rod is used to the steel 9 is used to the steel rod is used to the steel wire is used to the steel is.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides an on the open cut tunnel with the protection system of present subway interlude, including setting up in the pipe curtain between open cut tunnel and the present subway, the pipe curtain is including a plurality of steel pipe bodies that set up side by side and set up the steel pipe fore shaft on the steel pipe body, the steel pipe fore shaft is including the branch arrange same first fore shaft and the second fore shaft of steel pipe body both sides, when two steel pipe body are connected, first fore shaft and the mutual sliding connection of second fore shaft portion, and the second fore shaft is contained its characterized in that by first fore shaft portion completely: a plurality of pairs of mutually symmetrical abutting rods are arranged on the side walls of the two sides of the first locking part, and the abutting rods are in two states;
When the abutting rod is positioned in the first locking port part, the first locking port part and the second locking port part are flexibly connected;
when the abutting rod abuts against the outer wall of the second locking port part, the first locking port part and the second locking port part are rigidly connected.
2. The protection system for an existing subway intersection on an open cut tunnel according to claim 1, wherein: the inner wall of the first locking opening is provided with a plurality of pairs of square grooves which are symmetrical with each other, each square groove is internally provided with a tightening rod in a sliding manner, each tightening rod is connected with the corresponding square groove inner wall through a first elastic piece, each tightening rod is provided with a jack, the inner wall of the first locking opening is provided with a plurality of pairs of sliding grooves which are symmetrical with each other, the part, which is positioned between a group of two square grooves, of the inner wall of the first locking opening is provided with a plurality of pairs of sliding grooves which are symmetrical with each other, each sliding manner is provided with a locking rod, and each locking rod is inserted into the jack to limit the tightening rod.
3. The protection system for an existing subway intersection on an open cut tunnel according to claim 2, wherein: the part of the first locking part, which is positioned between the two sliding grooves of the same group and symmetrical with each other, is provided with a flat groove, the flat groove is communicated with the corresponding sliding groove, the opposite surfaces of the two locking rods of the same group and symmetrical with each other are provided with clamping teeth, the part of the first locking part, which is positioned between the two locking rods of the same group and symmetrical with each other, in the flat groove is provided with a transmission gear in a rotating way, and the transmission gear is meshed with the two rows of clamping teeth simultaneously.
4. A protection system for an existing subway intersection on an open cut tunnel according to claim 3, wherein: and each locking rod is provided with a driven rod, each driven rod is slidably arranged in the flat groove, and each driven rod and the inner wall of the flat groove are connected through a second elastic piece.
5. The protection system for the intersection with the existing subway on the open-cut tunnel according to claim 4, wherein: the second fore shaft portion includes oval shaped plate and connecting rod, the connecting rod is connected on steel pipe body outer wall, is provided with oval shaped plate on the connecting rod, and oval shaped plate sets up in first fore shaft portion, is provided with multiunit mutual symmetry's poking rod on the oval shaped plate outer wall, and each poking rod and rather than the driven lever that corresponds mutually support and use.
6. The protection system for the intersection with the existing subway on the open cut tunnel according to claim 5, wherein: two clamping grooves are symmetrically formed in two side walls of the opening position of the first locking opening part, a driven plate is arranged in each clamping groove in a sliding sealing mode, the driven plates are connected with the inner walls of the clamping grooves through third elastic pieces, the connecting rod is located in a gap between the two driven plates, and the driven plates and the connecting rod are abutted tightly against each other.
7. The protection system for an existing subway intersection on an open cut tunnel according to claim 6, wherein: each square groove inner wall is respectively provided with a groove, each positioning plate is slidably mounted in each groove, each positioning plate is provided with a plurality of first triangular teeth, each abutting rod is respectively provided with a plurality of second triangular teeth, the first triangular teeth and the second triangular teeth are matched with each other for use, and each positioning plate is connected with the corresponding groove inner wall through a fourth elastic piece.
8. The protection system for an existing subway intersection on an open cut tunnel according to claim 7, wherein: and a plurality of feeding channels are uniformly formed in the second locking part along the axial direction of the second locking part.
9. The protection system for the intersection with the existing subway on the open cut tunnel according to claim 8, wherein: and a feeding pipe fitting is arranged in each feeding channel in a sliding manner.
10. The protection system for the intersection with the existing subway on the open cut tunnel according to claim 9, wherein: each feeding pipe fitting is provided with a propelling ball in one end in the first locking part, a plurality of auxiliary grooves are uniformly formed in the inner wall in the middle of the first locking part along the axial direction of the steel pipe body, two sides of each auxiliary groove are mutually communicated with the flat grooves on two sides of the auxiliary groove, an auxiliary block is slidably arranged in each auxiliary groove, a steel wire rope is arranged in each part of the mutually communicated auxiliary groove and the flat groove, two sides of each auxiliary block are respectively connected to one end of the steel wire rope, and the other end of each steel wire rope is connected with the driven rod.
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| CN202410744801.2A CN118309434B (en) | 2024-06-11 | 2024-06-11 | Protection system for cross section of open cut tunnel and existing subway |
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| CN117662182A (en) * | 2023-11-01 | 2024-03-08 | 中交二航局第一工程有限公司 | Device for rapidly installing steel corrugated plates in pipe curtain tunnel and construction method of device |
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| CN107842212A (en) * | 2017-11-29 | 2018-03-27 | 中国建筑局（集团）有限公司 | Cutting protection structure for building legacy jacking pipe and construction method thereof |
| KR102013783B1 (en) * | 2019-01-08 | 2019-08-26 | 김성진 | Steel pipe, underground structure and cast messer shield method |
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| CN118309434B (en) | 2024-09-17 |
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