CN113882369A - Method for tensioning anchor rod by using anchorage device - Google Patents
Method for tensioning anchor rod by using anchorage device Download PDFInfo
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- CN113882369A CN113882369A CN202111236378.8A CN202111236378A CN113882369A CN 113882369 A CN113882369 A CN 113882369A CN 202111236378 A CN202111236378 A CN 202111236378A CN 113882369 A CN113882369 A CN 113882369A
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- butt joint
- anchor
- jack
- tensioning
- joint frame
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Piles And Underground Anchors (AREA)
Abstract
The invention relates to the technical field of anchor rod tensioning, and discloses a method for tensioning an anchor rod by using an anchorage device, which comprises the following specific steps: 1) clamping and fixedly connecting the anchorage device with the butt joint frame, arranging a support on the outer surface of the construction, and fixedly arranging a jack on the support; 2) butt-joint reinforcing steel bars are arranged among the butt-joint frame, the bracket and the jack in a penetrating way; 3) tensioning the butted steel bars upwards through a jack, and tensioning the anchor rods upwards through the butted steel bars through a butted frame and an anchorage device; during construction, at first, carry out block fixed connection with butt joint frame and ground tackle to set up the support that supports the jack at the structure thing, then pass the jack and relatively fixed with the upper end of butt joint reinforcing bar, pass the lower extreme of butt joint reinforcing bar and pass support and butt joint frame relatively fixed connection, exert pressure down to the support through the jack, thereby produce the reverse power of pulling the butt joint reinforcing bar upwards on the support, and the butt joint reinforcing bar carries out stretch-draw upwards to the stock through butt joint frame and ground tackle, realizes the stretch-draw test to the stock.
Description
Technical Field
The invention relates to the technical field of anchor rod tensioning, in particular to an anchor rod tensioning method by utilizing an anchorage device.
Background
In engineering construction, anchor rods are usually used when main bodies of side slopes, tunnels and dam bodies are reinforced because anchor rod support has the advantages of high construction speed, small construction difficulty, small construction occupied area, low construction cost and the like; in particular, in the coal mine roadway support, a bolt support technology is generally adopted.
At present, in actual engineering, in order to determine the magnitude of anchor rod load, an anchor rod uplift load test is generally required to be carried out; the anchor rod uplift load test is usually implemented by reserving a certain length for the anchor rod and tensioning the reserved part by using a tensioning tool.
In the prior art, a tensioning tool is generally adopted to tension the reserved part of the anchor rod, and the anchor rod can be directly tensioned under the condition that the reserved length of the anchor rod is enough, but the method is often influenced by the reserved length of the anchor rod, and when the reserved length of the anchor rod is not enough or the anchor is sealed, the anchor rod cannot be subjected to tensioning test.
Disclosure of Invention
The invention aims to provide a method for tensioning an anchor rod by using an anchorage device, and aims to solve the problem that the anchor rod with insufficient reserved length cannot be subjected to tensioning test in the prior art.
The invention is realized in this way, the anchor rod tensioning method by using the anchorage device comprises the following construction steps:
1) the anchor rod comprises a fixed section which is fixedly arranged and a tensioning section which is movably arranged and embedded in the soil body, the anchor rod is provided with a connecting section which penetrates out of the construction body, the outer surface of the construction body is provided with an anchorage device, and the connecting section penetrates through the anchorage device and is fixedly connected with the anchorage device;
the anchor is connected with a butt joint frame, and the butt joint frame is fixedly connected with the anchor through clamping; arranging a support on the outer surface of the building, and fixedly arranging a jack on the support;
2) the upper end of the butt joint reinforcing steel bar penetrates through the jack and is fixed relative to the jack, the lower end of the butt joint reinforcing steel bar penetrates through the bracket and is fixed relative to the butt joint frame, and the butt joint reinforcing steel bar is clamped and fixed between the jack and the butt joint frame;
3) and when downward pressure is applied to the support through the jack, the butt joint reinforcing steel bars are pulled upwards in the reverse direction, and the butt joint reinforcing steel bars are tensioned upwards through the butt joint frames and the anchorage devices.
Furthermore, the anchorage device is in a circular truncated cone shape and comprises a top end surface which is arranged upwards, a bottom end surface which is arranged downwards and is abutted against the outer surface of the construction, and an outer circumference ring surface, wherein the outer circumference ring surface is formed between the top end surface and the bottom end surface, the outer circumference ring surface is arranged inwards in an inclined mode along the direction from top to bottom, and a clamping ring cavity is formed between the outer circumference ring surface and the outer surface of the construction in a surrounding mode;
the lower part of the butt joint frame is sleeved on the periphery of the anchorage device, the butt joint frame is provided with two vertical walls which are arranged oppositely, a clamping interval with two through sides is formed by enclosing the two vertical walls, the lower ends of the vertical walls are convexly provided with clamping strips, and the clamping strips are arranged towards the clamping interval;
in the construction step 1), the butt joint frame moves towards the anchor, the anchor enters the clamping interval from a side opening of the clamping interval, the clamping strips of the two vertical walls are embedded in two sides in the clamping annular cavity and are clamped and fixedly connected with the anchor, and the vertical walls are vertically arranged with the outer surface of the construction.
Further, the butt-joint frame is provided with a top plate, the top plate is arranged between the two vertical walls, and two sides of the top plate are correspondingly butted with the upper ends of the two vertical walls respectively; in the construction step 2), the lower ends of the butted reinforcing steel bars sequentially penetrate through the support and the top plate and then are relatively fixed with the top plate.
Furthermore, the lower end of the butt joint reinforcing steel bar is provided with a lower section which penetrates through the top plate and extends into the clamping interval, the lower section is connected with a lower nut, the lower nut abuts against the top plate from bottom to top, and the butt joint reinforcing steel bar is limited to move upwards relative to the top plate.
Furthermore, the butt joint reinforcing bar has the upper portion section that passes the jack, and extends to the jack top, the steel sheet has been laid at the top of jack, the upper portion section passes the steel sheet, be connected with the nut on the upper portion section, the steel sheet is being supported to upper nut top-down, the restriction the butt joint reinforcing bar moves down for the jack.
The support is further characterized by being cylindrical, the support comprises a cylinder top wall and a cylinder peripheral wall which is annularly arranged, the cylinder top wall is connected to the top of the cylinder peripheral wall, and a sleeve cavity which is open at the bottom and is arranged downwards is enclosed between the cylinder top wall and the cylinder peripheral wall; in the construction step 1), the bottom of the cylinder peripheral wall is vertically abutted against the outer surface of a construction, the outer surface of the construction closes the bottom opening of the sleeve cavity, and the butt joint frame and the anchorage device are respectively positioned in the sleeve cavity; in the construction step 2), the upper end of the butt joint reinforcing steel bar penetrates through the top wall of the barrel from bottom to top.
Furthermore, an elastic body is filled in the sleeve cavity, the elastic body is completely abutted against the inner side wall of the sleeve cavity, a limiting cavity with an opening at the bottom and arranged downwards is arranged at the lower part of the elastic body, the appearance of the limiting cavity is similar to that of the butt joint frame, the volume of the limiting cavity is smaller than that of the butt joint frame, and the bottom of the elastic body is arranged in parallel with the bottom of the peripheral wall of the cylinder;
in the construction step 1), the butt joint frame is embedded in the limiting cavity, the top of the butt joint frame abuts against the top of the limiting cavity, and the bottom of the elastic body and the bottom of the cylinder peripheral wall are respectively provided with an elastic interval with the outer surface of a construction;
in the construction step 3), the jack applies downward pressure to the support until the bottom of the cylinder peripheral wall of the support and the bottom of the elastic body abut against the outer surface of the structure, and after a set time interval, the jack continuously increases the downward pressure applied to the support until the pressure applied by the jack reaches a set pressure value.
Further, in the construction step 3), after the bottom of the cylindrical wall of the bracket and the bottom of the elastic body abut against the outer surface of the structure, the outer side wall of the jack is continuously struck along the outer circumferential direction of the jack for a set interval of time.
Furthermore, a plurality of positioning columns are convexly arranged on the top of the butt joint frame upwards, and in the construction step 1), after the butt joint frame is clamped with the anchorage device, the positioning columns are vertically arranged on the outer surface of the building; in the construction step 2), after the butt-joint reinforcing steel bars are fixedly connected with the butt-joint frame, the positioning columns are arranged in a surrounding mode at intervals by taking the butt-joint reinforcing steel bars as surrounding centers;
the upper part of the elastic body is provided with a plurality of positioning holes, the diameters of the positioning holes are smaller than the diameter of the positioning column, the lengths of the positioning holes are larger than the length of the positioning column, the tops of the positioning holes are closed, and the bottoms of the positioning holes penetrate through the top of the limiting cavity; in the construction step 3), after the butt joint frame is placed in the limiting cavity, the positioning columns are correspondingly inserted into the positioning holes.
Furthermore, along the circumferential direction, the peripheral ring surface is provided with a plurality of clamping rings, the plurality of clamping rings are arranged at intervals along the top-down direction, the clamping strip is provided with a plurality of grooves for the clamping rings to be clamped in, and the plurality of grooves are arranged at intervals along the top-down direction; in the construction step 2), when the butt joint frame clamps the anchorage device, the clamping strips are clamped on the peripheral ring surface, and the plurality of clamping rings are correspondingly clamped in the grooves.
Compared with the prior art, the anchor rod tensioning method by using the anchor device, provided by the invention, comprises the steps of firstly clamping and fixedly connecting the butt joint frame and the anchor device, arranging a support for supporting a jack on a construction object, then penetrating the upper end of the butt joint reinforcing steel bar through the jack and relatively fixing, penetrating the lower end of the butt joint reinforcing steel bar through the support and relatively fixedly connecting the butt joint frame, applying downward pressure to the support through the jack, generating a force for reversely pulling the butt joint reinforcing steel bar upwards on the support, and upwards tensioning the anchor rod through the butt joint frame and the anchor device by using the butt joint reinforcing steel bar, so that the tensioning test of the anchor rod is realized.
Drawings
FIG. 1 is a schematic diagram illustrating the construction steps of the anchor rod tensioning method using an anchor according to the present invention;
FIG. 2 is a schematic view of a butt-jointed clamping anchor for an anchor rod tensioning method using the anchor according to the present invention;
FIG. 3 is a schematic view of a docking cradle for performing an anchor rod tensioning method using an anchor according to the present invention;
FIG. 4 is a general schematic view of a tension structure of the anchor rod tension method using an anchor according to the present invention;
FIG. 5 is a schematic view of a tension structure of the anchor rod tension method using an anchor according to the present invention;
FIG. 6 is a schematic view of a bracket for performing a method of tensioning an anchor rod using an anchor according to the present invention;
FIG. 7 is a schematic view of an anchor assembly according to the present invention for use in a method of tensioning an anchor rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-7, preferred embodiments of the present invention are provided.
The method for tensioning the anchor rod 200 by using the anchor 100 comprises the following construction steps:
1) the anchor rod 200 comprises a fixedly arranged fixed section and a movably arranged tensioning section, the fixed section is embedded in a soil body 214, the anchor rod 200 is provided with a connecting section penetrating out of the construction 204, the outer surface of the construction 204 is provided with an anchorage device 100, the connecting section penetrates through the anchorage device 100 and is fixedly connected with the anchorage device 100, and the anchor rod 200 is tensioned through the anchorage device 100;
the anchor 100 is connected with a butt joint frame 101, the butt joint frame 101 is fixedly connected with the anchor 100 through clamping, and the anchor 100 is tensioned through the butt joint frame 101, so that the anchor rod 200 is tensioned; arranging a support 302 on the outer surface of the construction 204, and fixedly arranging a jack 211 on the support 302, wherein the jack 211 is used for tensioning the anchorage device 100 and the butt joint frame 101;
2) the butt joint reinforcing steel bars 202 are arranged in a penetrating mode, the upper ends of the butt joint reinforcing steel bars 202 penetrate through the jacks 211 and are fixed relative to the jacks 211, the lower ends of the butt joint reinforcing steel bars 202 penetrate through the supports 302 and are fixed relative to the butt joint frame 101, the butt joint reinforcing steel bars 202 are clamped and fixed between the jacks 211 and the butt joint frame 101, and the jacks 211 stretch the butt joint reinforcing steel bars 202, so that the butt joint frame 101 is stretched;
3) when downward pressure is applied to the bracket 302 through the jack 211, a force which pulls the butt joint reinforcing steel bar 202 upwards in the opposite direction is generated on the bracket 302, so that the butt joint reinforcing steel bar 202 is tensioned, and therefore the butt joint reinforcing steel bar 202 is tensioned upwards to the anchor rod 200 through the butt joint frame 101 and the anchorage device 100.
Through the construction steps, the anchor rod 200 tensioning method is carried out by using the anchor 100, firstly, the butt joint frame 101 and the anchor 100 are fixedly connected in a clamping mode, the support 302 for supporting the jack 211 is arranged on the construction object 204, then, the upper end of the butt joint reinforcing steel bar 202 penetrates through the jack and is relatively fixed, the lower end of the butt joint reinforcing steel bar 202 penetrates through the support 302 and is relatively fixedly connected with the butt joint frame 101, downward pressure is applied to the support 302 through the jack 211, force for pulling the butt joint reinforcing steel bar 202 upwards in a reverse direction is generated on the support 302, and the butt joint reinforcing steel bar 202 upwards tensions the anchor rod 200 through the butt joint frame 101 and the anchor 100, so that the tensioning test of the anchor rod 200 is realized.
The anchorage device 100 is in a circular truncated cone shape and comprises a top end surface 105 arranged upwards, a bottom end surface 106 arranged downwards and abutted against the outer surface of a construction object 204 and a peripheral ring surface 107, and the docking frame 101 clamps the anchorage device 100 on the peripheral ring surface 107 of the anchorage device 100; the peripheral ring surface 107 is formed between the top end surface 105 and the bottom end surface 106, the peripheral ring surface 107 is arranged in an inward inclined mode along the direction from top to bottom, so that the peripheral ring surface 107 of the anchor 100 is clamped by the butt joint frame 101 from the direction from bottom to top, a clamping ring cavity is formed by the peripheral ring surface 107 and the outer surface of the construction object 204 in an enclosing mode, and the butt joint frame 101 and the peripheral ring surface 107 are clamped in the clamping ring cavity;
the lower part of the butt joint frame 101 is sleeved on the periphery of the anchorage device 100, the butt joint frame 101 is provided with two vertical walls 103 which are arranged oppositely, a clamping interval 109 with two through sides is formed by enclosing between the two vertical walls 103, the anchorage device 100 is clamped in the clamping interval 109 by the butt joint frame 101, the lower end of the vertical wall 103 is convexly provided with a clamping strip 104, the clamping strip 104 is arranged towards the clamping interval 109, and the clamping strip 104 is clamped on the peripheral annular surface 107 of the anchorage device 100;
in the construction step 1), the docking bracket 101 is moved towards the anchor 100, the anchor 100 enters the clamping interval 109 from the side opening of the clamping interval 109, the clamping strips 104 of the two vertical walls 103 are embedded in two sides in the clamping ring cavity and clamped on the peripheral ring surface 107 of the anchor 100, the docking bracket 101 is clamped and fixedly connected with the anchor 100, the vertical walls 103 are arranged perpendicular to the outer surface of the construction 204, and the docking bracket 101 clamps the anchor 100 along the direction perpendicular to the outer surface of the construction 204.
The diameter of the top end face 105 is larger than that of the bottom end face 106, so that the clamping strips 104 of the anchor 100 incline inwards from top to bottom, the anchor 100 can be clamped by the butt joint frame 101 from bottom to top conveniently, the abutting faces 112 are arranged between the top end face 105 and the clamping strips 104 along the vertical downward direction, the abutting faces 112 have certain thickness, the abutting faces 112 abut against the side plates, the thickness of the upper end of the anchor 100 is increased, the anchor 100 is prevented from being worn too fast in use, and the anchor 100 and the butt joint frame 101 are clamped and fastened more tightly.
The anchor 100 is provided with a plurality of butt holes 300 through which the anchor rod 200 is inserted and fixed, the plurality of butt holes 300 are used for inserting and fixing the plurality of anchor rods 200, the plurality of butt holes 300 penetrate through the top end surface 105 and the bottom end surface 106 of the anchor 100, and when the anchor rod 200 is inserted into the butt holes 300, the anchor rod 200 penetrates through the bottom end surface 106 of the anchor 100, penetrates out of the top end surface 105, and is fixed in the butt holes 300.
The butt joint frame 101 is provided with a top plate 108, the top plate 108 is arranged between the two vertical walls 103, two sides of the top plate 108 are correspondingly butted with the upper ends of the two vertical walls 103 respectively, a butt joint hole 300 is arranged on the top plate 108, and the butt joint reinforcing steel bar 202 penetrates through the butt joint hole 300 to be in relatively fixed butt joint; in the construction step 2), the lower ends of the butt-joint reinforcing bars 202 pass through the through holes on the brackets 302 and the butt-joint holes 300 on the top plate 108, and after sequentially passing through the brackets 302 and the top plate 108, the butt-joint reinforcing bars 202 and the top plate 108 are relatively fixed, so that the anchor rods 200 are tensioned by the tensioning reinforcing bars through the butt-joint brackets 101 and the anchors 100.
The butt joint frame 101 is provided with the connecting hole 102 for inserting and fixing the butt joint reinforcing steel bar 202, and the connecting hole 102 is arranged at the central position of the top plate 108, so that when the top plate 108 is tensioned, the pulling force is positioned at the central position, the pulling force is uniformly dispersed to the butt joint frame 101 and the anchorage device 100, the labor is saved, and the anchor rod 200 is conveniently tensioned; the diameter of the connecting hole 102 is 15 mm-25 mm, and in the diameter range, the abutting steel bar 202 with the corresponding diameter is equipped for tensioning, and the abutting steel bar 202 with the diameter is enough to bear the force for tensioning the anchor rod 200 under most conditions.
Specifically, the lower end of the butt-joint reinforcing steel bar 202 is provided with a lower section which penetrates through the top plate 108 and extends into the clamping interval 109, the lower section is relatively limited in the clamping interval 109, the lower section is connected with a lower nut 205, the lower nut 205 abuts against the top plate 108 from bottom to top to limit upward movement of the butt-joint reinforcing steel bar 202 relative to the top plate 108, when the butt-joint reinforcing steel bar 202 is tensioned upwards, the lower section of the butt-joint reinforcing steel bar 202 abuts against the top plate 108 through the lower nut 205 to stretch the butt-joint frame 101, and the butt-joint frame 101 stretches the anchor rod 200 through the anchor 100 to stretch the anchor rod 200, so that the anchor rod 200 is stretched.
The butt-joint reinforcing steel bar 202 is provided with an upper section which penetrates through the jack 211 and extends above the jack 211, the upper section of the butt-joint reinforcing steel bar 202 is relatively and fixedly abutted against the top of the jack 211, a steel plate 212 is laid on the top of the jack 211, the upper section penetrates through the steel plate 212, an upper nut 213 is connected to the upper section, the upper nut 213 is abutted against the steel plate 212 from top to bottom, downward movement of the butt-joint reinforcing steel bar 202 relative to the jack 211 is limited, and when upward force is applied to the steel plate 212 by the jack 211, upward thrust is applied to the upper nut 213 by the steel plate 212, so that upward tension is formed on the butt-joint steel plate 212.
Specifically, the bracket 302 is cylindrical, the bracket 302 comprises a cylinder top wall 210 and a cylinder peripheral wall 203 which is annularly arranged, the cylinder top wall 210 is connected to the top of the cylinder peripheral wall 203, a through hole for the butt joint reinforcing steel bar 202 to pass through is arranged on the cylinder top wall 210, a sleeve cavity 207 which is open at the bottom and is arranged downwards is enclosed between the cylinder top wall 210 and the cylinder peripheral wall 203, and the butt joint frame 101 is arranged in the sleeve cavity 207; in the construction step 1), the bottom of the cylinder peripheral wall 203 vertically abuts against the outer surface of the construction 204, the outer surface of the construction 204 closes the bottom opening of the sleeve cavity 207, and the docking frame 101 and the anchorage device 100 are respectively positioned inside the sleeve cavity 207; in the construction step 2), the upper end of the butt-joint reinforcing steel bar 202 passes through the through hole and penetrates through the barrel top wall 210 from bottom to top.
The elastic body 206 is filled in the sleeve cavity 207, the elastic body 206 has the functions of buffering and reinforcing the abutment frame 101 and clamping the anchorage device 100, the elastic body 206 is completely abutted against the inner side wall of the sleeve cavity 207, the lower part of the elastic body 206 is provided with the limiting cavity 301 which is opened at the bottom and arranged downwards, the appearance of the limiting cavity 301 is similar to that of the abutment frame 101, the volume of the limiting cavity 301 is smaller than that of the abutment frame 101, the bottom of the elastic body 206 is arranged in parallel and level with the bottom of the cylinder peripheral wall 203, when the sleeve cavity 207 is sleeved with the abutment frame 101, the abutment frame 101 is extruded into the limiting cavity 301, and the elastic body 206 forms extrusion elasticity on the abutment frame 101, so that the abutment frame 101 clamps the anchorage device 100 more tightly and is not easy to fall off;
in the construction step 1), the butt joint frame 101 is embedded into the limiting cavity 301, the top of the butt joint frame 101 abuts against the top of the limiting cavity 301, the bottom of the elastic body 206 and the bottom of the cylinder peripheral wall 203 respectively have an elastic interval 201 with the outer surface of the construction object 204, and the elastic body 206 and the cylinder peripheral wall 203 are elastically abutted against the elastic interval 201;
in the construction step 3), the jack 211 applies downward pressure to the bracket 302 until the bottom of the cylindrical wall 203 of the bracket 302 and the bottom of the elastic body 206 abut against the outer surface of the structure 204, and after a set time interval, the jack 211 continuously increases the downward pressure applied to the bracket 302 until the pressure applied by the jack 211 reaches a set pressure value, thereby completing the tension test on the anchor rod 200.
In the construction step 3), after the bottom of the cylindrical wall 203 of the bracket 302 and the bottom of the elastic body 206 are abutted against the outer surface of the structure 204, the outer side wall of the jack 211 is continuously tapped along the outer peripheral direction of the jack 211 within a set interval time, so that the force direction of the jack 211 for tensioning the abutting steel bar 202 is always along the central axis direction of the abutting frame 101, and errors caused by the tension test on the anchor rod 200 due to the change of the force direction for tensioning the abutting steel bar 202 are avoided.
Specifically, a plurality of positioning columns 208 are convexly arranged on the top of the docking frame 101 in an upward manner, the positioning columns 208 are used for relatively positioning the docking frame 101, in the construction step 1), after the docking frame 101 is clamped with the anchorage device 100, the positioning columns 208 are vertically arranged with the outer surface of the building 204, the positioning columns 208 are arranged on the top of the docking frame 101 in an upward manner, and the support 302 is inserted into the docking frame 101 in a relatively positioning manner; in the construction step 2), after the butt-joint reinforcing steel bars 202 are fixedly connected with the butt-joint frame 101, the positioning columns 208 are arranged in a surrounding mode at intervals by taking the butt-joint reinforcing steel bars 202 as surrounding centers, and the positioning columns 208 arranged in the surrounding mode can position the butt-joint frame 101 in all directions along the circumferential direction;
the upper part of the elastic body 206 is provided with a plurality of positioning holes 209, the positioning holes 209 are used for being inserted, jointed and butted with a plurality of corresponding positioning columns 208, the diameter of each positioning hole 209 is smaller than that of each positioning column 208, the positioning columns 208 are extruded and inserted into the positioning holes 209 more tightly, the length of each positioning hole 209 is larger than that of each positioning column 208, so that the positioning holes 209 have enough length for the positioning columns 208 to be inserted, the tops of the positioning holes 209 are closed, and the bottoms of the positioning holes 209 penetrate through the tops of the limiting cavities 301; in the construction step 3), after the docking frame 101 is placed in the limiting cavity 301, the positioning columns 208 are correspondingly inserted into the positioning holes 209, so that the docking frame 101 is relatively positioned, and the situation that the position of the docking frame 101 deviates to cause a tension test on the anchor rod 200 is avoided, so that the accuracy of the tension test on the anchor rod 200 can be improved.
The peripheral ring surface 107 is provided with a plurality of clamping rings 111 along the circumferential direction, the plurality of clamping rings 111 are used for clamping and butting with the butting frame 101 in a more fastening manner, the plurality of clamping rings 111 are arranged at intervals along the direction from top to bottom, the clamping strip 104 is provided with a plurality of grooves 110 for the clamping rings 111 to be clamped in, the plurality of grooves 110 are arranged at intervals along the direction from top to bottom, and the distance of the interval arrangement is respectively consistent with the distance of the interval arrangement of the plurality of clamping rings 111; in the construction step 2), when the anchor 100 is clamped by the butt-joint frame 101, the clamping strips 104 are clamped on the peripheral annular surface 107, and the plurality of clamping rings 111 are correspondingly clamped in the corresponding grooves 110 one by one, so that the clamping of the butt-joint frame 101 and the anchor 100 is more stable.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The anchor rod tensioning method by using the anchor device is characterized by comprising the following construction steps:
1) the anchor rod comprises a fixed section which is fixedly arranged and a tensioning section which is movably arranged and embedded in the soil body, the anchor rod is provided with a connecting section which penetrates out of the construction body, the outer surface of the construction body is provided with an anchorage device, and the connecting section penetrates through the anchorage device and is fixedly connected with the anchorage device;
the anchor is connected with a butt joint frame, and the butt joint frame is fixedly connected with the anchor through clamping; arranging a support on the outer surface of the building, and fixedly arranging a jack on the support;
2) the upper end of the butt joint reinforcing steel bar penetrates through the jack and is fixed relative to the jack, the lower end of the butt joint reinforcing steel bar penetrates through the bracket and is fixed relative to the butt joint frame, and the butt joint reinforcing steel bar is clamped and fixed between the jack and the butt joint frame;
3) and when downward pressure is applied to the support through the jack, the butt joint reinforcing steel bars are pulled upwards in the reverse direction, and the butt joint reinforcing steel bars are tensioned upwards through the butt joint frames and the anchorage devices.
2. A method for tensioning an anchor rod by using the anchor device as claimed in claim 1, wherein the anchor device is in a shape of a circular truncated cone and comprises a top end surface arranged upwards, a bottom end surface arranged downwards and abutted against the outer surface of the structure, and an outer circumferential ring surface, the outer circumferential ring surface is formed between the top end surface and the bottom end surface, the outer circumferential ring surface is arranged obliquely inwards along the top-down direction, and a clamping ring cavity is formed by the outer circumferential ring surface and the outer surface of the structure in a surrounding manner;
the lower part of the butt joint frame is sleeved on the periphery of the anchorage device, the butt joint frame is provided with two vertical walls which are arranged oppositely, a clamping interval with two through sides is formed by enclosing the two vertical walls, the lower ends of the vertical walls are convexly provided with clamping strips, and the clamping strips are arranged towards the clamping interval;
in the construction step 1), the butt joint frame moves towards the anchor, the anchor enters the clamping interval from a side opening of the clamping interval, the clamping strips of the two vertical walls are embedded in two sides in the clamping annular cavity and are clamped and fixedly connected with the anchor, and the vertical walls are vertically arranged with the outer surface of the construction.
3. A method for tensioning an anchor rod using an anchor according to claim 2, wherein the abutting frame has a top plate disposed between two vertical walls, and both sides of the top plate are respectively abutted against upper ends of the two vertical walls; in the construction step 2), the lower ends of the butted reinforcing steel bars sequentially penetrate through the support and the top plate and then are relatively fixed with the top plate.
4. A method of tensioning an anchor rod using an anchorage assembly according to claim 3, wherein the lower end of the reinforcement bar has a lower section extending through the top plate into the clamping space, the lower section having a lower nut attached thereto, the lower nut abutting the top plate from below to above and limiting upward movement of the reinforcement bar relative to the top plate.
5. A method for tensioning an anchor rod using an anchorage device as claimed in claim 1, wherein the butt-jointed reinforcing bar has an upper section which passes through the jack and extends above the jack, a steel plate is laid on the top of the jack, the upper section passes through the steel plate, and an upper nut is connected to the upper section and abuts against the steel plate from top to bottom to restrict the butt-jointed reinforcing bar from moving downward relative to the jack.
6. A method for tensioning an anchor rod by using an anchorage device according to any one of claims 1 to 5, wherein the bracket is cylindrical and comprises a top wall and a circumferential wall which are annularly arranged, the top wall is connected to the top of the circumferential wall, and a sleeve cavity which is open at the bottom and is arranged downwards is enclosed between the top wall and the circumferential wall; in the construction step 1), the bottom of the cylinder peripheral wall is vertically abutted against the outer surface of a construction, the outer surface of the construction closes the bottom opening of the sleeve cavity, and the butt joint frame and the anchorage device are respectively positioned in the sleeve cavity; in the construction step 2), the upper end of the butt joint reinforcing steel bar penetrates through the top wall of the barrel from bottom to top.
7. A method for tensioning an anchor rod by using an anchor device according to claim 6, wherein the sleeve cavity is filled with an elastic body, the elastic body is completely abutted with the inner side wall of the sleeve cavity, the lower part of the elastic body is provided with a limiting cavity which is opened at the bottom and is arranged downwards, the shape of the limiting cavity is similar to that of the butt joint frame, the volume of the limiting cavity is smaller than that of the butt joint frame, and the bottom of the elastic body is arranged flush with the bottom of the cylinder peripheral wall;
in the construction step 1), the butt joint frame is embedded in the limiting cavity, the top of the butt joint frame abuts against the top of the limiting cavity, and the bottom of the elastic body and the bottom of the cylinder peripheral wall are respectively provided with an elastic interval with the outer surface of a construction;
in the construction step 3), the jack applies downward pressure to the support until the bottom of the cylinder peripheral wall of the support and the bottom of the elastic body abut against the outer surface of the structure, and after a set time interval, the jack continuously increases the downward pressure applied to the support until the pressure applied by the jack reaches a set pressure value.
8. A method of tensioning an anchor rod using an anchor according to claim 7, wherein in the constructing step 3), after the bottom of the cylindrical wall of the bracket and the bottom of the elastic body abut against the outer surface of the structure, the outer side wall of the jack is continuously struck in the circumferential direction of the jack at predetermined intervals.
9. A method for tensioning an anchor rod by using an anchor according to claim 7 or 8, wherein a plurality of positioning columns are convexly arranged on the top of the butt joint frame upwards, and in the construction step 1), after the butt joint frame is clamped with the anchor, the positioning columns are vertically arranged on the outer surface of the construction; in the construction step 2), after the butt-joint reinforcing steel bars are fixedly connected with the butt-joint frame, the positioning columns are arranged in a surrounding mode at intervals by taking the butt-joint reinforcing steel bars as surrounding centers;
the upper part of the elastic body is provided with a plurality of positioning holes, the diameters of the positioning holes are smaller than the diameter of the positioning column, the lengths of the positioning holes are larger than the length of the positioning column, the tops of the positioning holes are closed, and the bottoms of the positioning holes penetrate through the top of the limiting cavity; in the construction step 3), after the butt joint frame is placed in the limiting cavity, the positioning columns are correspondingly inserted into the positioning holes.
10. An anchor rod tensioning method by using an anchor as claimed in any one of claims 2 to 4, wherein the circumferential ring surface is provided with a plurality of snap rings in a circumferential direction, the plurality of snap rings are arranged at intervals in a top-down direction, the snap-in strip is provided with a plurality of grooves for the snap rings to be snapped in, and the plurality of grooves are arranged at intervals in the top-down direction; in the construction step 2), when the butt joint frame clamps the anchorage device, the clamping strips are clamped on the peripheral ring surface, and the plurality of clamping rings are correspondingly clamped in the grooves.
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| CN202111236378.8A CN113882369B (en) | 2021-10-22 | 2021-10-22 | Method for tensioning anchor rod by using anchorage device |
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| CN202111236378.8A CN113882369B (en) | 2021-10-22 | 2021-10-22 | Method for tensioning anchor rod by using anchorage device |
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| CN113882369B CN113882369B (en) | 2022-11-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592513A (en) * | 2022-03-14 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Snatch formula ground tackle structure convenient to compensation stretch-draw |
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| JPH1150453A (en) * | 1997-08-07 | 1999-02-23 | Kurosawa Kensetsu Kk | Anchorage device of ground anchor head |
| CN102108703A (en) * | 2010-12-20 | 2011-06-29 | 中铁隧道集团有限公司 | Adjustable prestressed anchoring device |
| CN108999625A (en) * | 2018-07-30 | 2018-12-14 | 天地科技股份有限公司 | Anchor pole stretching construction device and construction method |
| CN110761283A (en) * | 2019-12-03 | 2020-02-07 | 山东建勘集团有限公司 | Anchor rod compensation tensioning device |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1150453A (en) * | 1997-08-07 | 1999-02-23 | Kurosawa Kensetsu Kk | Anchorage device of ground anchor head |
| CN102108703A (en) * | 2010-12-20 | 2011-06-29 | 中铁隧道集团有限公司 | Adjustable prestressed anchoring device |
| CN108999625A (en) * | 2018-07-30 | 2018-12-14 | 天地科技股份有限公司 | Anchor pole stretching construction device and construction method |
| CN110761283A (en) * | 2019-12-03 | 2020-02-07 | 山东建勘集团有限公司 | Anchor rod compensation tensioning device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592513A (en) * | 2022-03-14 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Snatch formula ground tackle structure convenient to compensation stretch-draw |
| CN114592513B (en) * | 2022-03-14 | 2024-01-09 | 深圳市工勘岩土集团有限公司 | Snatch formula ground tackle structure convenient to compensation stretch-draw |
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| CN113882369B (en) | 2022-11-29 |
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