CN217267501U

CN217267501U - Foundation pit supporting structure

Info

Publication number: CN217267501U
Application number: CN202220064756.2U
Authority: CN
Inventors: 王宇晨; 龚彪; 温建超; 张甲奎; 杨帆; 高晨辉; 周靖; 王晓里
Original assignee: Beijing International Construction Group Co ltd
Current assignee: Beijing International Construction Group Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-08-23
Anticipated expiration: 2032-01-11

Abstract

The application relates to a foundation pit supporting structure belongs to the foundation pit supporting field. The utility model provides an underground structure allies oneself with row structure including the pile body that is used for supporting the ground, be provided with the anchor eye on the rock mass, the pile body allies oneself with to arrange structural being provided with the through-hole corresponding with the anchor eye, the anchor eye interpolation is equipped with the sleeve pipe, it has the anchor body to fill between the inner wall of sleeve pipe and anchor eye, the sleeve pipe passes through anchor body and ground rigid coupling, can dismantle in the sleeve pipe and wear to be equipped with the pull rod, the pull rod is worn to locate the through-hole and is outstanding in the pile body and allies oneself with the surface that row structure deviates from the ground, install the fastener on the pull rod, the pull rod allies oneself with row structural connection through fastener and pile body. This application has the effect of the staff of being convenient for retrieve the pull rod.

Description

Foundation pit supporting structure

Technical Field

The application relates to the field of foundation pit support, especially, relate to a foundation pit support structure.

Background

The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit.

The pile-anchor support is a common deep foundation pit support mode, one end of a pull rod is fixed in a stable stratum of an excavated foundation pit through an anchoring body, and the other end of the pull rod is connected with a pile body through a fastening piece in a foundation pit support system. When the construction is carried out in the foundation pit, the excavated earthwork and the pile-anchor supporting system are not interfered with each other, the construction period can be effectively shortened, and the method is particularly suitable for foundation pit engineering with complex construction sites and strict requirements on the construction period.

In view of the above-mentioned related technologies, the inventor considers that the pull rod fixed in the rock soil through the anchoring body is difficult to remove and high in cost, so that the pull rod is not usually removed when the supporting structure of the foundation pit is removed after the construction of the underground structural engineering in the foundation pit is completed, and the pull rods are directly discarded in the rock soil, thereby causing resource waste.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the staff to retrieve the pull rod, this application provides a foundation ditch supporting construction.

The application provides a foundation ditch supporting construction adopts following technical scheme:

the utility model provides a foundation pit supporting structure, allies oneself with row's structure including the pile body that is used for supporting ground, be provided with the anchor eye on the rock mass, the pile body allies oneself with to arrange structurally to be provided with the through-hole corresponding with the anchor eye, the anchor eye interpolation is equipped with the sleeve pipe, it has the anchor body to fill between the inner wall of sleeve pipe and anchor eye, the sleeve pipe passes through anchor body and ground rigid coupling, can dismantle in the sleeve pipe and wear to be equipped with the pull rod, the pull rod is worn to locate the through-hole and is outstanding in the pile body and allies oneself with the surface that row's structure deviates from ground, install the fastener on the pull rod, the pull rod allies oneself with row's structural connection through fastener and pile body.

By adopting the technical scheme, when a worker installs the supporting structure, the pull rod is firstly inserted into the sleeve and connected with the sleeve, then the sleeve is plugged into the anchor hole, the anchor hole is filled with the anchoring body to enable the sleeve and the inner wall of the rock soil to be relatively fixed, and then the pull rod is tensioned by using the fastening piece to provide pretightening force, so that the supporting structure is installed; when the supporting structure needs to be dismantled, after the fastener is dismounted by workers, the connection between the pull rod and the sleeve is released, then the pull rod is pulled out of the sleeve, the recovery of the pull rod is realized, and the waste of resources is reduced.

Optionally, a connecting block is fixedly connected to the inner wall of the sleeve, a limiting groove for limiting the pull rod to be separated from the sleeve is further formed in the pull rod, a sliding groove for allowing the connecting block to slide into the limiting groove is further formed in the pull rod, the sliding groove is communicated with the limiting groove, and the connecting block is detachably inserted into the limiting groove.

Through adopting above-mentioned technical scheme, when staff connects pull rod and sleeve pipe, inject the pull rod into the sleeve pipe earlier, make the connecting block enter into the spout, then promote the pull rod, make the connecting rod slide in the spacing inslot, realize pull rod and sheathed tube joint, this connected mode easy operation, the staff of being convenient for installs this supporting construction.

Optionally, the connecting block is provided with a plurality ofly, and is a plurality of the connecting block sets up along cover intraductal wall a week, and the length direction of connecting block all points to sheathed tube axis.

Through adopting above-mentioned technical scheme, go into a plurality of spacing inslots with the connecting block that a plurality of circumference were arranged respectively, reduced the stress on the single connecting block, strengthened the joint strength between pull rod and the sleeve pipe.

Optionally, the connecting block is provided with a plurality of connecting blocks, and the plurality of connecting blocks are distributed along the length direction of the casing pipe.

Through adopting above-mentioned technical scheme, go into a plurality of spacing inslots respectively with a plurality of connecting blocks of arranging along sleeve pipe length direction, need rotate repeatedly and pulling the pull rod just can take out the pull rod from the sleeve pipe when the staff retrieves the pull rod, improved the pull rod and broken away from sheathed tube degree of difficulty, strengthened pull rod and sheathed tube joint strength.

Optionally, the fastener comprises a fastening nut, the fastening nut is in threaded connection with one end, protruding out of the rock-soil surface, of the pull rod, and the fastening nut has a tendency of pulling the pull rod outwards.

Through adopting above-mentioned technical scheme, fastening nut's joint strength is high, and the staff's of being convenient for operation has improved staff's work efficiency.

Optionally, the pull rod is sleeved with an anchor backing plate, the anchor backing plate is located between the fastening nut and the pile body row connecting structure, the anchor backing plate is fixedly connected with the pile body row connecting structure, a clamping block is fixedly connected to the anchor backing plate, a clamping groove for clamping the clamping block is formed in the pull rod, the extending direction of the clamping groove is parallel to the length direction of the pull rod, and the clamping block can be detachably clamped in the clamping groove.

Through adopting above-mentioned technical scheme, locate the fixture block card in the draw-in groove, restricted the rotation of pull rod, avoided the pull rod to break away from the risk of spacing groove because of rotating messenger's connecting block, improved the stability of pull rod.

Optionally, the sleeve pipe includes connecting portion and the portion of sliding, the connecting portion external diameter is greater than the portion of sliding external diameter, connecting portion are located the portion of sliding and keep away from the one end of pile body antithetical couplet row structure.

Through adopting above-mentioned technical scheme, the external diameter of connecting portion is greater than the external diameter of the portion of sliding, and the sleeve pipe has strengthened the joint strength of sleeve pipe and ground with anchor body joint, the supporting effect of this supporting construction of improvement.

Optionally, the anchor backing plate is fixedly connected with the pile body row-connecting structure through bolts.

By adopting the technical scheme, the follow-up supporting structure is convenient to disassemble, and the disassembling efficiency of workers is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

when a worker installs the supporting structure, firstly inserting the pull rod into the sleeve and connecting the pull rod with the sleeve, then plugging the sleeve into the anchor hole, filling an anchoring body into the anchor hole to relatively fix the sleeve and the inner wall of rock soil, and then tensioning the pull rod by using a fastening piece to provide pre-tightening force to complete the installation of the supporting structure; when the supporting structure needs to be dismantled, after a worker unloads the fastener, the connection between the pull rod and the sleeve is released, and then the pull rod is pulled out of the sleeve, so that the recovery of the pull rod is realized, and the waste of resources is reduced;

when the pull rod and the sleeve are connected by workers, the pull rod is firstly inserted into the sleeve, so that the connecting block enters the sliding groove, then the pull rod is pushed, the connecting rod slides into the limiting groove, and the clamping connection of the pull rod and the sleeve is realized;

the clamping block is clamped in the clamping groove, so that the rotation of the pull rod is limited, the risk that the connecting block is separated from the limiting groove due to the rotation of the pull rod is avoided, and the stability of the pull rod is improved.

Drawings

Fig. 1 is a schematic structural diagram of a foundation pit supporting structure provided in an embodiment of the present application.

Fig. 2 is a sectional view showing the internal structure of the anchor eye.

Fig. 3 is a sectional view showing the inner structure of the sleeve.

Fig. 4 is a schematic structural view of the tie rod.

Fig. 5 is an enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. pile body row structure; 10. a through hole; 11. a pedestal; 2. rock and soil; 20. an anchor eye; 3. a sleeve; 30. a connecting portion; 300. connecting blocks; 31. a sliding part; 4. an anchor; 5. a pull rod; 50. connecting grooves; 500. a chute; 501. a limiting groove; 51. a card slot; 6. a fastener; 60. a cross beam; 600. i-shaped steel; 61. fastening a nut; 62. an anchor backing plate; 620. and (7) clamping blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a foundation ditch supporting construction. Referring to fig. 1 and 2, a foundation pit supporting structure, including vertical setting at foundation pit pile body row structure 1 all around, pile body row structure 1 is that a plurality of pile body is arranged and is constituteed, and pile body row structure 1 keeps out foundation pit 2 all around outside the foundation pit. A plurality of through holes 10 are formed in the pile body row structure 1, and the through holes 10 are evenly distributed along the length direction of the pile body row structure 1. An anchor hole 20 is drilled in the rock and soil 2 corresponding to each through hole 10, the anchor hole 20 and the through holes 10 are coaxially arranged, and the anchor hole 20 extends into a stable stratum of the rock and soil 2 from one side of the rock and soil 2 close to the pile body row structure 1. A sleeve 3 is inserted into each anchor hole 20, and an anchor 4 is filled in a gap between the sleeve 3 and the inner wall of the anchor hole 20, in this embodiment, the material of the anchor 4 is cement mortar, and in other embodiments of the present application, the anchor 4 may also be cement mortar or chemical grout. The sleeve 3 is fixedly connected in the rock soil 2 through the anchoring body 4, a pull rod 5 is arranged in the sleeve 3 in a penetrating mode, the pull rod 5 is detachably connected with the sleeve 3, and the pull rod 5 is arranged in the through hole 10 in a penetrating mode and protrudes out of the surface, deviating from the rock soil 2, of the pile body row structure 1. And a fastener 6 is arranged at one end of the pull rod 5 positioned outside the anchor hole 20, and the pull rod 5 is fixed on the pile body row structure 1 through the fastener 6.

Referring to fig. 2 and 3, the casing 3 includes a connecting portion 30 and a sliding portion 31, the connecting portion 30 is located at the deep position of the anchor hole 20, the sliding portion 31 is located at one side of the connecting portion 30 close to the pile body row structure 1, the connecting portion 30 and the sliding portion 31 are both in a circular tube shape, the connecting portion 30 is made of metal, the sliding portion 31 is made of degradable hard plastic, the outer diameter of the connecting portion 30 is smaller than the aperture of the anchor hole 20, the outer diameter of the connecting portion 30 is larger than the outer diameter of the sliding portion 31, and the inner diameter of the connecting portion 30 is equal to the inner diameter of the sliding portion 31. An outward extending convex edge is integrally formed at one end of the sliding part 31 close to the connecting part 30, a plurality of screws penetrate through the convex edge, and the sliding part 31 is fixed on the connecting part 30 through the plurality of screws.

Referring to fig. 3 and 4, three sets of connection blocks 300 are fixedly connected to the inner circumferential wall of the connection portion 30, and the three sets of connection blocks 300 are uniformly arranged along the inner circumferential wall of the connection portion 30. Each set of the connecting blocks 300 includes three connecting blocks 300, and the three connecting blocks 300 of the same set are uniformly arranged along the axial direction of the connecting portion 30. The connecting groove 50 is formed in one end, located at the connecting portion 30, of the pull rod 5, and corresponds to each connecting block 300, and the connecting groove 50 comprises a plurality of sliding grooves 500 for allowing the connecting blocks 300 to slide and a plurality of limiting grooves 501 for limiting the pull rod 5 to be separated from the connecting portion 30. The extending direction of the sliding groove 500 is parallel to the length direction of the pull rod 5, and the limiting groove 501 extends along the circumferential direction of the outer circumferential wall of the pull rod 5. One of the sliding grooves 500 is connected to the end face of the pull rod 5 away from the fastening member 6, and the connecting block 300 enters the connecting groove 50 through the sliding groove 500. The sliding grooves 500 and the limiting grooves 501 are arranged in a staggered manner, and the sliding grooves 500 are communicated with the adjacent limiting grooves 501, so that the connecting grooves 50 are in a bow shape. The distance between two adjacent connecting blocks 300 in the same group is equal to the distance between two adjacent limiting grooves 501 plus the length of one sliding groove 500.

When the staff needs to connect the pull rod 5 with the connecting part 30, the end of the pull rod 5 provided with the connecting groove 50 is inserted into the sliding part 31, the pull rod 5 is pushed to enable the end of the pull rod 5 to touch the connecting block 300, and then the pull rod 5 is rotated to enable the connecting block 300 in contact with the end of the pull rod 5 to correspondingly enter the sliding groove 500. The staff continues to push the pull rod 5, until the pull rod 5 can not be pushed, the pull rod 5 is rotated clockwise, so that the connecting block 300 slides into the limiting groove 501. The worker continues to rotate the pull rod 5 clockwise until the pull rod 5 cannot be rotated, and pushes the pull rod 5; when the pull rod 5 cannot be pushed, the pull rod 5 is rotated anticlockwise, and when the pull rod 5 cannot be rotated, the pull rod 5 is pushed, so that the connecting block 300 in the second row enters the connecting groove 50. Then, the pull rod 5 is continuously pushed and rotated until all the connecting blocks 300 are located in the limiting grooves 501, and through the cooperation of the connecting blocks 300 and the limiting grooves 501, the displacement of the pull rod 5 in the direction of the axis of the pull rod is limited, and the connection strength of the pull rod 5 and the connecting portion 30 is enhanced.

Referring to fig. 1 and 5, a pedestal 11 is fixedly connected to the edge of each through hole 10 on one side of the pile body row structure 1 away from the rock soil 2, the pedestal 11 is made of concrete, and the table top of the pedestal 11 is perpendicular to the length direction of the pull rod 5. The fastener 6 comprises a cross beam 60, the cross beam 60 comprises two I-shaped steels 600 arranged in parallel, the length direction of the I-shaped steels 600 is parallel to the arrangement direction of the through holes 10, and the cross beam 60 is fixedly connected to the pedestal 11 through bolts. One end of each pull rod 5, which is far away from the connecting part 30, penetrates through a gap between the two I-shaped steels 600, each pull rod 5 is in threaded connection with a fastening nut 61, and the fastening nuts 61 are located on one sides, which are far away from the rock soil 2, of the I-shaped steels 600.

Referring to fig. 1 and 5, an anchor plate 62 is disposed between the fastening nut 61 and the i-steel 600, and the anchor plate 62 is sleeved on the pull rod 5. Two clamping grooves 51 are formed in one end of the pull rod 5, which is far away from the connecting portion 30, the two clamping grooves 51 are symmetrically arranged on two sides of the axis of the pull rod 5, and the extending direction of the clamping grooves 51 is parallel to the length direction of the pull rod 5. Two fixture blocks 620 are arranged on the anchor backing plate 62 corresponding to the two fixture grooves 51, and the fixture blocks 620 are slidably arranged in the fixture grooves 51. Two bolts are further arranged on the anchor backing plate 62 in a penetrating mode, and the anchor backing plate 62 is fixed on the I-shaped steel 600 through the bolts. The rotation of the pull rod 5 is limited by the anchor backing plate 62, and the situation that the connecting block 300 is separated from the limiting groove 501 due to the rotation of the pull rod 5 is avoided.

The implementation principle of the foundation pit supporting structure in the embodiment of the application is as follows: after the construction of the underground structural engineering in the foundation pit is completed, the fastening nut 61 is firstly screwed and dismounted, then the bolt on the anchor backing plate 62 is dismounted, the anchor backing plate 62 on the pull rod 5 is taken down, the fixture block 620 is separated from the clamping groove 51, then the pull rod 5 is rotated and pulled, the connecting blocks 300 are separated from the connecting groove 50, the connection between the pull rod 5 and the sleeve 3 is released, and finally the pull rod 5 is pulled out from the sleeve 3. Compared with the prior art, the foundation pit supporting structure is convenient for workers to pull out the pull rod 5 in the anchor hole 20, multiple utilization of the pull rod 5 is achieved, and waste of resources is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a foundation ditch supporting construction which characterized in that: including pile body row structure (1) that is used for supporting ground (2), be provided with anchor eye (20) on ground (2), be provided with through-hole (10) corresponding with anchor eye (20) on pile body row structure (1), anchor eye (20) interpolation is equipped with sleeve pipe (3), it has anchor body (4) to fill between the inner wall of sleeve pipe (3) and anchor eye (20), sleeve pipe (3) are through anchor body (4) and ground (2) rigid coupling, can dismantle in sleeve pipe (3) and wear to be equipped with pull rod (5), pull rod (5) are worn to locate through-hole (10) and are outstanding in pile body row structure (1) the surface that deviates from ground (2), install fastener (6) on pull rod (5), pull rod (5) are connected with pile body row structure (1) through fastener (6).

2. A foundation pit supporting construction according to claim 1, wherein: the utility model discloses a spacing device, including pull rod (5), connecting block (300), pull rod (5) are gone up the rigid coupling and are had connecting block (300), still be provided with spacing groove (501) that are used for restricting pull rod (5) to break away from sleeve pipe (3) on pull rod (5), still be provided with spout (500) that supply connecting block (300) to slide into spacing groove (501) on pull rod (5), spout (500) are linked together with spacing groove (501), connecting block (300) can be dismantled and insert and locate in spacing groove (501).

3. A foundation pit supporting construction according to claim 2, wherein: the connecting block (300) is provided with a plurality of, and is a plurality of connecting block (300) sets up along sleeve pipe (3) inner wall a week, and the length direction of connecting block (300) all points to the axis of sleeve pipe (3).

4. A foundation pit supporting construction according to claim 2, wherein: the connecting blocks (300) are arranged in a plurality, and the connecting blocks (300) are distributed along the length direction of the casing (3).

5. An excavation supporting construction as claimed in any one of claims 2 to 4, wherein: fastener (6) are including fastening nut (61), fastening nut (61) threaded connection is outstanding in pile body allies oneself with one end that row structure (1) deviates from ground (2) surface in pull rod (5), fastening nut (61) have the trend of outwards drawing pull rod (5).

6. A foundation pit supporting construction according to claim 5, wherein: the cover is equipped with anchor backing plate (62) on pull rod (5), anchor backing plate (62) are located fastening nut (61) and pile body and ally oneself with between row structure (1), anchor backing plate (62) and pile body ally oneself with row structure (1) rigid coupling, the rigid coupling has fixture block (620) on anchor backing plate (62), be provided with on pull rod (5) and supply fixture block (620) to block draw-in groove (51) of establishing, the extending direction of draw-in groove (51) is on a parallel with the length direction of pull rod (5), fixture block (620) can be dismantled the card and locate in draw-in groove (51).

7. A foundation pit supporting construction according to claim 1, wherein: the sleeve (3) comprises a connecting part (30) and a sliding part (31), wherein the outer diameter of the connecting part (30) is larger than that of the sliding part (31), and the connecting part (30) is located at one end, away from the pile body row structure (1), of the sliding part (31).

8. A foundation pit supporting construction according to claim 6, wherein: and the anchor backing plate (62) is fixedly connected with the pile body row-connecting structure (1) through bolts.