CN106894834A - A kind of leading screw branch ejection device and subsidence control method - Google Patents
A kind of leading screw branch ejection device and subsidence control method Download PDFInfo
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- CN106894834A CN106894834A CN201710145724.9A CN201710145724A CN106894834A CN 106894834 A CN106894834 A CN 106894834A CN 201710145724 A CN201710145724 A CN 201710145724A CN 106894834 A CN106894834 A CN 106894834A
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- ejection device
- leading screw
- branch ejection
- crossbeam
- base plate
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 239000004567 concrete Substances 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 abstract description 21
- 238000010276 construction Methods 0.000 description 14
- 239000000243 solution Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000012407 engineering method Methods 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 244000261422 Lysimachia clethroides Species 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000011504 laterite Substances 0.000 description 2
- 229910001710 laterite Inorganic materials 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a kind of leading screw branch ejection device and subsidence control method.Leading screw branch ejection device includes：Dowel, anchor slab, base plate, lead screw, top board and crossbeam；Wherein, two ends difference connecting bottom board and the top board of the lead screw；The bottom of the base plate is connected with the top of anchor slab, and the bottom of the anchor slab is connected with the top of dowel；The dowel and anchor slab are embedded in skirt piles, center pillar and/or steel pipe column；The top of the top board is connected with the bottom of crossbeam.The sedimentation of both cable architectures can be effectively prevented using the present invention so that both sedimentations of cable architecture can be limited within the scope of default very little, and can substantially reduce engineering cost.
Description
Technical field
The application is related to underground engineering technical field, more particularly to a kind of leading screw branch ejection device and subsidence control method.
Background technology
At present, the catenet that track traffic is formed just utilizes urban underground space at an unprecedented rate.With
Subway gauze is constantly encrypted, and the intersection between new and old circuit is passed through becomes abnormal universal, and existing line is worn under new subway circuit
Engineering also gradually increases.In order to reach preferably transfer effect between newly-built circuit and existing underground station, often using new
Build under station and wear the criss-cross fashion of building up station, to reduce transfer distance to greatest extent.However, this but gives civil Engineering Design
Great problem is brought with construction.On the one hand, in order in the work progress of newly-built circuit, the fortune of existing line not interrupted
Battalion, sedimentation of the building up station property right side of railroad embankment department to existing structure proposes this pole of sedimentation limit value no more than 3mm
It is harsh requirement；On the other hand, one needed under so strict settlement request to more broad-brush brick or concrete duct measure
Very fine technology work is done, the requirement of micro- sedimentation causes that these measures are usually had too many difficulties to cope with.
Therefore, in newly-built line construction, it is necessary to take various ancillary methods to ensure sedimentation control that construction infection causes
System is within 3mm.At present, conventional prior art includes：Around section stratum pre-reinforcement, jack are carried out using all kinds of slip castings
Support top etc..
At present, the case mutually passed through between station and interval, between interval and interval is numerous, and the technology for being used is arranged
Apply also relatively many, and the case mutually passed through between station and station is then relatively fewer.Below will be being worn both under newly-built station
Have as a example by station, with reference to the Engineering Projects (following table) that building up station is worn under the domestic newly-built station of subway in recent years, introduce each engineering and sink
The technology and control effect of control drop, and it is as shown in the table：
Table 1 wears the Engineering Projects of building up station under the domestic newly-built station of subway in recent years
Wherein, Wu Li, Zhao Yanfa, Liu Lei etc., Wang Zhigang describe Beijing Metro 4 from theoretical and construction angle respectively
, using the situation that existing No. 2 line Xuanwumens station is worn under CRD engineering methods, it is somebody's turn to do using two rectangular cross sections at a distance of 4.1m at line Xuanwumen station
Engineering is the engineering of domestic the first station main body transverse station main body；Hao Zhihong, Tao Lianjin, Li Jidong etc. from design and are managed respectively
The angle of opinion describes Beijing Metro No. 10 line princess's grave station and uses CRD using two individual layer twin spans Rectangular Tunnels apart from each other
Engineering method is aided with multiple pre- shores the situation that existing Line 1 princess grave station is worn under technology；Wang Dongyuan etc. is by Beijing Metro No. 10 line
Existing No. 4 line angles door western station engineering is worn under side door western station, both wired lower neighbouring big cross section subway twin tunnel boring constructions are have studied
Influence to Ground Deformation；Xu Yuanqi describes Guangzhou rail transit line 3 physical culture West Road station individual layer Three-arched tunnel using tune
Existing Line 1 physical culture West Road station project situation is worn under whole middle hole method；Xu Yansheng is then described in Sandy Silt and sandstone formation
Chongqing Light Rail No. 10 line laterite ground station uses CRD engineering methods (mechanical equivalent of light excavation knot using two horse-shoe tunnels at a distance of 1.66m
Close control (weak) blast working) under the construction technology stood with wearing existing No. 6 line laterite.
Be can be seen that in conventional city soft soil layer from several only Engineering Projects at station Xia Chuan stations, used
Technical measures mainly include：Excavate Stabilizing Grout (contain deep hole grouting), long tubular shanty grout injection, multiple pre- shore (jack
Jacking) etc., from terms of implementation result, except existing princess's grave station settlement Control is inside and outside in 3mm, the sedimentation of other stations is larger.
Thus, it can be known that in the practice of specific practice of construction, above-mentioned engineering method of the prior art there is also many problems,
For example：All kinds of slip castings cannot precise control slurries consumption, pressure, cause effect unobvious or uneven, so that lifting is existing
Cable architecture；Jack branch ejection device can actively adjust (or compensation) both wired sedimentations in theory, but, due to top longeron coagulation
Between the structure that native contraction distortion causes gap be difficult to it is closely knit mend slurry, so if it is both wired to accomplish actively to adjust (or compensation)
Sedimentation, then the quantity of the jack for being used need to be enough, thus will make troubles and involve great expense to engineering construction；In addition,
The complete both wired technical scheme of jack-up temporarily also makes without engineering real case, therefore the actual utility of jack branch ejection device at present
People queries.
The content of the invention
In view of this, the invention provides a kind of leading screw branch ejection device and subsidence control method, such that it is able to effectively
Prevent the sedimentation of both cable architectures so that both sedimentations of cable architecture can be limited within the scope of default very little, and
Engineering cost can be substantially reduced.
What technical scheme was specifically realized in：
A kind of leading screw branch ejection device, including：Dowel, anchor slab, base plate, lead screw, top board and crossbeam；
Wherein, two ends difference connecting bottom board and the top board of the lead screw；
The bottom of the base plate is connected with the top of anchor slab, and the bottom of the anchor slab is connected with the top of dowel；
The dowel and anchor slab are embedded in skirt piles, center pillar and/or steel pipe column；
The top of the top board is connected with the bottom of crossbeam.
Preferably, the base plate and top board are steel plate.
Preferably, the crossbeam is shaped steel crossbeam.
Preferably, the shaped steel crossbeam is I-steel.
Preferably, base plate and top board that the lead screw is connected with its two ends respectively weld together.
A kind of subsidence control method using above-mentioned leading screw branch ejection device is additionally provided in the present invention, the method is included such as
Lower step：
During skirt piles, center pillar and/or steel pipe column casting concrete in new subway structure, by the dowel of leading screw branch ejection device
With the top that anchor slab is embedded in the skirt piles, center pillar and/or steel pipe column；
The base plate of leading screw branch ejection device is installed on anchor slab, and lead screw is installed on base plate；On the top of lead screw
Top board is installed in portion, and installs crossbeam at the top of top board；
After leading screw branch ejection device is installed, lead screw is adjusted so that crossbeam holds out against the initial stage branch of new subway structure
The top of shield；
The reinforcing bar of Guan Liang and top longeron in colligation pilot tunnel, and casting concrete；
High pressure is carried out to gap by pre-buried Grouting Pipe and mends slurry.
As seen from the above technical solution, in the inventive solutions, it is proposed that the above-mentioned reinforcing bar that can be solidificated in is mixed
Leading screw branch ejection device in solidifying soil.When using above-mentioned leading screw branch ejection device, can be filled by leading screw support top in construction early stage
The function of the regulation height of the lead screw in putting so that leading screw branch ejection device forms effective branch to the bottom of both cable architectures
Support, and phase after construction, can playing leading screw branch ejection device, that rear exposed conveying appliance gooseneck rigidity is combined with armored concrete is larger
Advantage, the support of more continuous and effective is formed to the bottom of both cable architectures, such that it is able to effectively prevent both cable architectures
Sedimentation so that both sedimentations of cable architecture can be controlled within the scope of default very little.
In addition, the simple structure of the above-mentioned leading screw branch ejection device in the present invention, and can realize with it is of the prior art
The similar function of jack jacking apparatus (except compensation sedimentation function, but in actual applications, jack of the prior art
The above-mentioned compensation sedimentation function of jacking apparatus also is difficult to play and realizes), but construction costs is only in the prior art using very heavy
5% or so of the technical scheme of jacking apparatus is pushed up, therefore engineering cost can be substantially reduced, economic benefit is obvious.
Additionally, the installation of above-mentioned leading screw branch ejection device in the present invention, using all easily, only need to be before concreting
Carry out simple installation to can be used, it is not necessary to complicated jack synchronous jacking system, therefore can also significantly mitigate work
The workload of personnel.
Brief description of the drawings
Fig. 1 is the structural representation of the leading screw branch ejection device in the embodiment of the present invention.
Installation situation schematic diagrames of the Fig. 2 for the leading screw branch ejection device in the embodiment of the present invention in the pilot tunnel of side.
Fig. 3 is the schematic diagram of the step 201 in the embodiment of the present invention.
Fig. 4 is the schematic diagram of the step 202 in the embodiment of the present invention.
Fig. 5 is the schematic diagram of the step 204 in the embodiment of the present invention.
Fig. 6 is the schematic diagram in the gap between the total beam in top and the interior top of preliminary bracing in the embodiment of the present invention.
Fig. 7 is the schematic diagram of the step 205 in the embodiment of the present invention.
Fig. 8 is the position view of the leading screw branch ejection device in the embodiment of the present invention.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously embodiment referring to the drawings, right
The present invention is further described.
Present embodiments provide a kind of leading screw branch ejection device and subsidence control method.
Fig. 1 is the structural representation of the leading screw branch ejection device in the embodiment of the present invention.Fig. 2 is the silk in the embodiment of the present invention
Installation situation schematic diagram of the thick stick branch ejection device in the pilot tunnel of side.As depicted in figs. 1 and 2, the leading screw support top in the embodiment of the present invention
Device includes：Dowel 11, anchor slab 12, base plate 13, lead screw 14, top board 15 and crossbeam 16；
Wherein, two ends difference connecting bottom board 13 and the top board 15 of the lead screw 14；
The bottom of the base plate 13 is connected with the top of anchor slab 12, and bottom and the top of dowel 11 of the anchor slab 12 connect
Connect；
The dowel 11 and anchor slab 12 are embedded in skirt piles, center pillar and/or steel pipe column；
The top of the top board 15 is connected with the bottom of crossbeam 16.
Preferably, in a particular embodiment of the present invention, the base plate 13 and top board 15 can be steel plates.
Preferably, in a particular embodiment of the present invention, the crossbeam 16 can be shaped steel crossbeam.
Preferably, in a particular embodiment of the present invention, the shaped steel crossbeam can be the I-steel of certain model.
Preferably, in a particular embodiment of the present invention, can be by connecting steel between the crossbeam of each leading screw branch ejection device
Plate and bolt are attached.
Preferably, in a particular embodiment of the present invention, the base plate 13 that the lead screw 14 is connected with its two ends respectively
Weld together with top board 15.
In addition, in the inventive solutions, can be according to practical situations the need for, pre-set lead screw
14 diameter.For example, preferably, in a particular embodiment of the present invention, the diameter of the lead screw 14 can be 50mm,
Can be other numerical value.
In above-mentioned leading screw branch ejection device, dowel 11 and anchor slab 12 can be embedded in skirt piles, center pillar and/or steel pipe column
In, be whole leading screw branch ejection device basis and take root.The lead screw 14 and top board 15 at the middle part of base plate 13 are leading screw support top dresses
The main body put, furthermore, it is possible to adjust the length of lead screw 14 by artificial mode so that change base plate 13 and top board 15 it
Between vertical range.
Therefore, in the inventive solutions, the main body of above-mentioned leading screw branch ejection device can be arranged on new subway
In Guan Liang, top longeron in structure, the dowel and anchor slab of leading screw branch ejection device are embedded in skirt piles, center pillar or steel pipe column, and
So that the top of the crossbeam 16 of leading screw branch ejection device abuts with the preliminary bracing in new subway structure, such that it is able to using above-mentioned
Leading screw branch ejection device support top be present in both cable architectures on preliminary bracing top.
In the inventive solutions, set needed for above-mentioned leading screw branch ejection device can be arranged in several ways
In the concrete structure put.To wear newly-built in both wired engineerings so that above-mentioned leading screw branch ejection device is arranged under subway below
As a example by specific implementation in structure of the subway, technical scheme is described in detail.
It is, for example possible to use the subsidence control method of both wired engineerings is worn under new subway as described below, by as follows
The step of, above-mentioned leading screw branch ejection device is arranged under new subway in the new subway structure worn in both wired engineerings：
When step 201, skirt piles, center pillar and/or steel pipe column casting concrete in new subway structure, by leading screw support top dress
The dowel and anchor slab put are embedded in the top of the skirt piles, center pillar and/or steel pipe column.As shown in Figure 3.
Step 202, installs (for example weld) base plate of leading screw branch ejection device on anchor slab, and is installed (for example on base plate
Welding) lead screw；Top board is installed (for example weld) at the top of lead screw, and is installed (for example weld) at the top of top board
Crossbeam.As shown in Figure 4.
Step 203, after leading screw branch ejection device is installed, adjusts lead screw so that crossbeam holds out against new subway structure
Preliminary bracing top, be supported such that it is able to the bottom to both cable architectures.
Step 204, the reinforcing bar of Guan Liang and top longeron in colligation pilot tunnel, and casting concrete.
In casting concrete, it is necessary to note protecting the lead screw in leading screw branch ejection device, top board and crossbeam.
In addition, installing required height (for example, 320mm) according to crossbeam, top board structure can be adopted in the altitude range
With plain concrete construction, bottom can use reinforced concrete structure.As shown in Figure 5.
Step 205, carries out high pressure to gap and mends slurry by pre-buried Grouting Pipe.
High pressure is carried out to gap by built-in slip casting pipe and mends slurry, the interior top of top longeron or Guan Liang and preliminary bracing can be filled up
Between gap that may be present or gap.
Shrink when concrete, pour leakiness or when Guan Liang, top longeron cannot pour the interior top to preliminary bracing,
Gap or gap will likely be produced between top longeron or Guan Liang and the interior top of preliminary bracing, as shown in Figure 6.Now, due to leading screw
Crossbeam in branch ejection device directly holds out against with the top of preliminary bracing, therefore the exposed parts of crossbeam can be both wired with continued support
Structure, such that it is able to after effectively preventing post and lintel system from being formed but it is not closely connected caused by both cable architectures sedimentation.
And, in this step 205, can be according to monitoring situation, between pilot tunnel during soil excavation, by pre-buried slip casting
Pipe carries out many sub-high pressures to gap and mends slurry, to fill up top longeron or the gap between Guan Liang and the interior top of preliminary bracing, is allowed to close
It is real, and permanent closely connected holding force, as shown in Figure 7.The operation that high pressure mends slurry is carried out to gap by above-mentioned steps 205, may be used also
Further to control new subway structure two that the sedimentation caused by preliminary bracing is removed when serving as a contrast.
In the inventive solutions, above-mentioned leading screw support top dress is all buried in every skirt piles that can be in the pilot tunnel of side
Put, as shown in figure 8, therefore the spacing of two neighboring leading screw branch ejection device is skirt piles spacing (for example, 1.6 meters).Can also be in
In every center pillar in pilot tunnel and between two center pillars all above-mentioned silk is buried on set buttress according to above-mentioned method
Thick stick branch ejection device, therefore the spacing of two neighboring leading screw branch ejection device is spacing between center pillar and buttress or buttress (for example, 2
Rice).
In summary, in the inventive solutions, it is proposed that the above-mentioned silk that can be solidificated in armored concrete
Thick stick branch ejection device.When using above-mentioned leading screw branch ejection device, can be in the slip during construction early stage is by leading screw branch ejection device
The function of the regulation height of leading screw so that leading screw branch ejection device forms effective support to the bottom of both cable architectures, and is applying
In the work later stage, leading screw branch ejection device can be played the larger advantage of rear exposed conveying appliance gooseneck rigidity is combined with armored concrete, to both
The support of more continuous and effective is formed on the bottom of cable architecture, such that it is able to effectively prevent the sedimentation of both cable architectures so that
Both the sedimentation of cable architecture can be controlled within the scope of default very little.
In addition, the simple structure of the above-mentioned leading screw branch ejection device in the present invention, and can realize with it is of the prior art
The similar function of jack jacking apparatus (except compensation sedimentation function, but in actual applications, jack of the prior art
The above-mentioned compensation sedimentation function of jacking apparatus also is difficult to play and realizes), but construction costs is only in the prior art using very heavy
5% or so of the technical scheme of jacking apparatus is pushed up, therefore engineering cost can be substantially reduced, economic benefit is obvious.
Additionally, the installation of above-mentioned leading screw branch ejection device in the present invention, using all easily, only need to be before concreting
Carry out simple installation to can be used, it is not necessary to complicated jack synchronous jacking system, therefore can also significantly mitigate work
The workload of personnel.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (6)
1. a kind of leading screw branch ejection device, it is characterised in that the leading screw branch ejection device includes：Dowel, anchor slab, base plate, lead screw,
Top board and crossbeam；
Wherein, two ends difference connecting bottom board and the top board of the lead screw；
The bottom of the base plate is connected with the top of anchor slab, and the bottom of the anchor slab is connected with the top of dowel；
The dowel and anchor slab are embedded in skirt piles, center pillar and/or steel pipe column；
The top of the top board is connected with the bottom of crossbeam.
2. leading screw branch ejection device according to claim 1, it is characterised in that：
The base plate and top board are steel plate.
3. leading screw branch ejection device according to claim 1, it is characterised in that：
The crossbeam is shaped steel crossbeam.
4. leading screw branch ejection device according to claim 3, it is characterised in that：
The shaped steel crossbeam is I-steel.
5. leading screw branch ejection device according to claim 1, it is characterised in that：
The base plate and top board that the lead screw is connected with its two ends respectively weld together.
6. a kind of subsidence control method using leading screw branch ejection device as claimed in claim 1, it is characterised in that the method bag
Include following steps：
During skirt piles, center pillar and/or steel pipe column casting concrete in new subway structure, by the dowel and anchor of leading screw branch ejection device
Plate is embedded in the top of the skirt piles, center pillar and/or steel pipe column；
The base plate of leading screw branch ejection device is installed on anchor slab, and lead screw is installed on base plate；Pacify at the top of lead screw
Dress top board, and crossbeam is installed at the top of top board；
After leading screw branch ejection device is installed, lead screw is adjusted so that crossbeam holds out against the preliminary bracing of new subway structure
Top；
The reinforcing bar of Guan Liang and top longeron in colligation pilot tunnel, and casting concrete；
High pressure is carried out to gap by pre-buried Grouting Pipe and mends slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145724.9A CN106894834A (en) | 2017-03-13 | 2017-03-13 | A kind of leading screw branch ejection device and subsidence control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145724.9A CN106894834A (en) | 2017-03-13 | 2017-03-13 | A kind of leading screw branch ejection device and subsidence control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106894834A true CN106894834A (en) | 2017-06-27 |
Family
ID=59192384
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145724.9A Pending CN106894834A (en) | 2017-03-13 | 2017-03-13 | A kind of leading screw branch ejection device and subsidence control method |
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|---|---|---|---|---|
| US4740111A (en) * | 1985-08-01 | 1988-04-26 | Brunswick Mining And Smelting Corporation Limited | Friction washer for securing a wire mesh screening onto the protruding end of rock bolts |
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-
2017
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|---|---|---|---|---|
| US4740111A (en) * | 1985-08-01 | 1988-04-26 | Brunswick Mining And Smelting Corporation Limited | Friction washer for securing a wire mesh screening onto the protruding end of rock bolts |
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Application publication date: 20170627 |
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