CN113832996B - Construction method of deep foundation pit steel sheet pile and anchor cable supporting system - Google Patents
Construction method of deep foundation pit steel sheet pile and anchor cable supporting system Download PDFInfo
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- CN113832996B CN113832996B CN202111236590.4A CN202111236590A CN113832996B CN 113832996 B CN113832996 B CN 113832996B CN 202111236590 A CN202111236590 A CN 202111236590A CN 113832996 B CN113832996 B CN 113832996B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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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
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
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Abstract
The application relates to a construction method of a deep foundation pit steel sheet pile and anchor cable supporting system, which comprises the following steps: the method comprises the following steps: driving the steel sheet pile into the ground by using a pile driver; step two: determining a hole forming position on the steel sheet pile, and marking; step three: forming a through hole for an anchor cable to pass through at a marked position on the steel sheet pile; step four: positioning a drilling machine; step five: the drilling machine drives the drill rod to rotate, and the drill rod drives the drill bit to advance so that the drill bit and the drill rod sequentially penetrate through the through hole and are inserted into the rock body; step six: after the drill bit reaches the bottom, the last section of drill rod is disassembled, and the anchor cable is put in and taken out of the drill rod; step seven: injecting the slurry into the drill rod, withdrawing the drill rod while grouting, and stopping grouting when the slurry reaches the opening of 20-40 mm; step eight: shearing an anchor cable penetrating through one end of the steel sheet pile; step nine: installing a clamping assembly on the steel sheet pile; step ten: and clamping one end of the anchor cable extending out of the steel sheet pile through the clamping assembly. This application has increased the fastness of being connected between anchor rope and the steel sheet pile.
Description
Technical Field
The application relates to a foundation pit construction method, in particular to a construction method of a deep foundation pit steel sheet pile and anchor cable supporting system.
Background
Steel sheet piles are steel structures with linkages at the edges and which can be freely combined to form a continuous tight retaining or retaining wall.
The anchor cable is a prestressed steel strand which is fixed on the slope surface through the outer end and passes through the sliding surface of the side slope in a stable rock body with the other end anchored in the sliding surface, so that the anti-sliding resistance is directly generated on the sliding surface, the anti-sliding friction resistance is increased, the structural surface is in a compact state, and the integrity of the rock body of the side slope is improved, thereby fundamentally improving the mechanical property of the rock body, effectively controlling the displacement of the rock body, promoting the stability of the rock body, and achieving the purpose of renovating bedding, sliding slopes, dangerous rocks and dangerous rocks.
The related art discloses a deep foundation pit steel sheet pile and anchor rope supporting system, one end of an anchor rope penetrates through a rock body, the other end of the anchor rope penetrates through a steel sheet pile, a base plate is sleeved at one end, penetrating through the steel sheet pile, of the anchor rope, an anchorage device is further in threaded fit with one end, penetrating through the steel sheet pile, of the anchor rope, and the anchorage device and the steel sheet pile are respectively abutted to two opposite side walls of the base plate, so that the steel sheet pile is fixed.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the rock mass has the extrusion to the steel sheet, takes place to send when becoming flexible between ground tackle and the anchor rope to remove the fixed action of ground tackle between anchor rope and the steel sheet, under the extrusion of rock mass, the steel sheet pile is towards the orientation slope that is close to the foundation ditch easily.
Disclosure of Invention
In order to increase the firmness of connection between an anchor cable and a steel sheet pile, the application provides a construction method of a deep foundation pit steel sheet pile and anchor cable supporting system.
The construction method of the deep foundation pit steel sheet pile and anchor cable supporting system adopts the following technical scheme:
the construction method of the deep foundation pit steel sheet pile and anchor cable support system comprises the following steps:
the method comprises the following steps: driving all the steel sheet piles into the ground by using a pile driver;
step two: determining a hole forming position on the steel sheet pile, and marking;
step three: forming a through hole for an anchor cable to pass through at a marked position on the steel sheet pile;
step four: the drilling machine is in place and is kept stable;
step five: the drilling machine drives a drill rod to rotate, and the drill rod drives a drill bit to advance so that the drill bit and the drill rod sequentially penetrate through the through hole and are inserted into a rock body;
step six: after the drill bit reaches the bottom, the last section of drill rod is disassembled, and the anchor cable is put in and taken out of the drill rod;
step seven: injecting the slurry into a drill rod, slowly withdrawing the drill rod while injecting the slurry, and stopping injecting the slurry when the slurry reaches an orifice of 20-40 mm;
step eight: shearing the anchor cable penetrating through one end of the steel sheet pile;
step nine: installing a clamping assembly on the steel sheet pile;
step ten: and clamping one end of the anchor cable extending out of the steel sheet pile through the clamping assembly.
Through adopting above-mentioned technical scheme, the rig inserts the anchor rope in the rock mass, then through pouring into the thick liquid in the rock mass to in being fixed in the rock mass with the anchor rope, then stretch out the one end centre gripping of steel sheet pile with the anchor rope through this centre gripping subassembly, thereby link together steel sheet and anchor rope, increased the fastness of being connected between steel sheet and the anchor rope.
Preferably, the clamping assembly comprises a positioning piece and a clamping piece, the positioning piece comprises an installation block and a positioning block, the installation block is fixed on the steel sheet pile, and the positioning block is fixed on the installation block; the clamping piece comprises a clamping block and a rotating block which are fixedly connected, and the rotating block is rotatably arranged on the mounting block; the positioning block is provided with a first clamping groove for positioning the anchor cable, and the side wall of the clamping block, which is close to the positioning block, is provided with a second clamping groove for positioning the anchor cable; and the mounting block is provided with a supporting component for fixing the clamping piece to rotate.
By adopting the technical scheme, a worker enables one end of the anchor cable penetrating through the steel sheet pile to be in clamping fit with the first clamping groove, then the clamping piece is driven to rotate through the supporting assembly, so that the clamping block rotates towards the direction close to the positioning block, when the side wall of the clamping block abuts against the side wall of the positioning block, the second clamping groove in the clamping block is in clamping fit with the anchor cable, the positioning block and the clamping block have a clamping effect on the anchor cable, and therefore the end, extending out of the steel sheet pile, of the anchor cable is connected with the steel sheet pile; compared with the prior art that the anchor cable is connected with the steel sheet pile through the anchor device, the connecting strength between the anchor cable and the steel sheet pile is improved.
Preferably, the support assembly comprises a sliding block and a screw rod, the sliding block comprises a support part and a sliding part which are fixedly connected, a sliding groove is formed in the mounting block, and the sliding part is in sliding fit with the sliding groove; one end of the screw rod penetrates through the mounting block and is positioned in the sliding groove, the screw rod is in threaded fit with the mounting block, and one end of the screw rod, which is positioned in the sliding groove, is rotatably connected with the sliding part; the clamping block is fixedly provided with a driving part, one side wall of the supporting part abuts against the side wall of the driving part, and the side wall of the supporting part, which deviates from the driving part, abuts against the surface of the mounting block.
By adopting the technical scheme, when the side wall of the clamping block abuts against the side wall of the positioning block, a worker rotates the lead screw, the lead screw drives the sliding part to slide in the sliding groove towards the direction close to the clamping block, the sliding part drives the supporting part to slide towards the direction close to the clamping block, the supporting part extrudes the lower surface of the driving part to enable the driving part to rotate, the driving part drives the clamping block to rotate, so that the side wall of the clamping block, which is far away from the driving part, abuts against the side wall of the positioning block, and the fixing effect on the anchor cable is realized; meanwhile, one side wall of the supporting part is abutted to the side wall of the mounting block, and the other side wall of the supporting part is abutted to the side wall of the driving part close to the mounting block, so that the supporting part has a supporting effect on the driving part, the rotation of the driving part can be limited, the rotation of the clamping block is further limited, and the firmness of clamping the anchor cable by the clamping block and the positioning block is increased.
Preferably, one side wall of the mounting block is provided with a plurality of penetrating holes, and the penetrating holes are communicated with the sliding groove; a plurality of threaded holes are formed in the side wall, opposite to the mounting block, of the mounting block, and the threaded holes are communicated with the sliding groove; the penetrating holes correspond to the threaded holes one by one; a rotating hole is formed in the rotating block, a screw rod penetrates through the rotating hole, and the rotating block is rotationally connected with the screw rod; one end of the screw rod is in threaded fit with one of the threaded holes, and the other end of the screw rod penetrates through the corresponding through hole.
By adopting the technical scheme, a worker can select different penetrating holes and threaded holes to install the screw on the installation block, so that the distance between the clamping block and the positioning block can be adjusted according to the thickness of the anchor cable, and further, different anchor cables can be conveniently fixed; meanwhile, the screw rod is in threaded fit with the threaded hole, so that the convenience of installing and disassembling the screw rod by workers is improved.
Preferably, the clamping block has a gap between the side wall close to the mounting block and the mounting block.
By adopting the technical scheme, a gap is reserved between the clamping block and the mounting block, and the rotating angle of the clamping block is increased.
Preferably, the clamping block is provided with a first round angle close to the side wall of the mounting block.
Through adopting above-mentioned technical scheme, the rotation angle of grip block has further been increased to first fillet.
Preferably, the side wall of the driving part close to the supporting part is provided with a second fillet, and the side wall of the supporting part close to the driving part is provided with a third fillet.
Through adopting above-mentioned technical scheme, when the staff slided the supporting part to between drive division and the installation piece, second fillet and third fillet have reduced the area of contact between supporting part and the drive division to reduce the frictional force between supporting part and the drive division, increased the staff and inserted the supporting part the convenience between drive division and the installation piece.
Preferably, the mounting block is provided with a positioning groove, the positioning block is in clamping fit with the positioning groove, and the positioning block is fixedly connected with the mounting block.
Through adopting above-mentioned technical scheme, the constant head tank has the positioning action to the locating piece, has increased the convenience that personnel are fixed in the locating piece on the installation piece.
Preferably, a knob is fixedly arranged at one end, far away from the sliding block, of the screw rod.
Through adopting above-mentioned technical scheme, the staff rotates the lead screw through rotatory knob, has laborsaving effect.
Preferably, a plurality of first flanges are fixedly arranged in the first clamping groove, and a plurality of second flanges are fixedly arranged in the second clamping groove.
Through adopting above-mentioned technical scheme, a plurality of first flanges have increased the frictional force between locating piece and the anchor rope, and a plurality of second flanges have increased the frictional force between grip block and the anchor rope, have increased the fastness of locating piece and grip block centre gripping anchor rope.
In summary, the present application includes at least one of the following beneficial technical effects:
the drilling machine inserts the anchor cable into the rock body, then the anchor cable is fixed in the rock body by grouting the rock body, and then one end of the anchor cable extending out of the steel sheet pile is clamped by the clamping assembly, so that the steel sheet and the anchor cable are connected together, and the firmness of connection between the steel sheet and the anchor cable is improved;
the worker enables one end of the anchor cable penetrating through the steel sheet pile to be in clamping fit with the first clamping groove, then the clamping piece is driven to rotate through the supporting assembly, so that the clamping block rotates towards the direction close to the positioning block, when the side wall of the clamping block abuts against the side wall of the positioning block, the second clamping groove in the clamping block is in clamping fit with the anchor cable, the positioning block and the clamping block have clamping effects on the anchor cable, and therefore the end, extending out of the steel sheet pile, of the anchor cable is connected with the steel sheet pile; compared with the prior art that the anchor cable and the steel sheet pile are connected together through the anchor device, the connecting strength between the anchor cable and the steel sheet pile is improved;
when the side wall of the clamping block abuts against the side wall of the positioning block, a worker rotates the lead screw, the lead screw drives the sliding part to slide in the sliding groove towards the direction close to the clamping block, the sliding part drives the supporting part to slide towards the direction close to the clamping block, the supporting part extrudes the lower surface of the driving part to enable the driving part to rotate, and the driving part drives the clamping block to rotate so that the side wall of the clamping block, which is far away from the driving part, abuts against the side wall of the positioning block, and therefore the fixing effect on the anchor cable is achieved; meanwhile, one side wall of the supporting part is abutted to the side wall of the mounting block, and the other side wall of the supporting part is abutted to the side wall of the driving part close to the mounting block, so that the supporting part has a supporting effect on the driving part, the rotation of the driving part can be limited, the rotation of the clamping block is further limited, and the firmness of clamping the anchor cable by the clamping block and the positioning block is increased.
Drawings
Fig. 1 is a schematic structural diagram of a deep foundation pit steel sheet pile and anchor cable support system in an embodiment of the present application.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
FIG. 3 is a half sectional view of a clamping assembly and a support assembly of an embodiment of the present application.
Description of reference numerals:
1. steel sheet piles; 11. a groove; 2. an anchor cable; 3. a clamping assembly; 31. a positioning member; 311. mounting blocks; 3111. a sliding groove; 3112. positioning a groove; 3113. penetrating a lead hole; 3114. a threaded hole; 3115. a screw; 3116. a nut; 3117. a fixed part; 312. positioning a block; 3121. a first clamping groove; 3122. a first flange; 32. a clamping member; 321. a clamping block; 3211. a second clamping groove; 3212. a second flange; 3213. a first rounded corner; 322. rotating the block; 3221. a drive section; 3222. a second rounded corner; 3223. rotating the hole; 4. a support assembly; 41. a sliding block; 411. a support portion; 412. a sliding part; 413. a third fillet; 42. a screw rod; 43. a knob; 431. a holding groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses deep basal pit steel sheet pile adds anchor rope and struts system. Referring to fig. 1, the steel sheet pile comprises a plurality of steel sheet piles 1 which are continuously arranged, and two adjacent steel sheet piles 1 are connected together in a buckling manner, so that the two adjacent steel sheet piles 1 have a mutual restraining effect. The shape of the steel sheet pile 1 is such that a groove 11 is formed at one side of the steel sheet pile 1, a through hole is formed in the steel sheet pile 1, the groove 11 is located at one side, away from the rock body, of the steel sheet pile 1, an anchor rope 2 is arranged in the through hole, one end of the anchor rope 2 is located in the rock body and fixedly connected with the rock body, and the other end of the anchor rope 2 penetrates through the through hole in the steel sheet pile 1. The anchor cable 2 is arranged obliquely, so that slurry flows into a rock body along the length direction of the anchor cable 2 under the action of self gravity in the grouting process of a worker.
Referring to fig. 2 and 3, a clamping assembly 3 for clamping the anchor cable 2 is arranged at one end of the anchor cable 2 penetrating through the through hole in the steel sheet pile 1, the clamping assembly 3 comprises a positioning member 31 and a clamping member 32, the positioning member 31 is fixed on the steel sheet pile 1, the clamping member 32 is rotatably arranged on the positioning member 31, and the positioning member 31 and the clamping member 32 are used for clamping one end of the anchor cable 2 extending out of the steel sheet pile 1, so that the anchor cable 2 is fixed.
Continuing to refer to fig. 2 and fig. 3, locating piece 31 includes installation piece 311 and locating piece 312, and the lateral wall integrated into one piece of installation piece 311 has three fixed part 3117, all wears to be equipped with the bolt on every fixed part 3117, and every bolt all with steel sheet pile 1 screw-thread fit to on being fixed in steel sheet pile 1 with installation piece 311, increased the convenience of staff's installation and dismantlement installation piece 311. Seted up constant head tank 3112 on the installation piece 311, locating piece 312 cooperates with constant head tank 3112 joint piece joint, wears to be equipped with two bolts on the installation piece 311, two bolts all with locating piece 312 screw-thread fit to on being fixed in installation piece 311 with locating piece 312, increased the staff installation and dismantled the convenience of passing locating piece 312.
With continued reference to fig. 2 and 3, the clamping member 32 includes an integrally formed clamping block 321 and a rotating block 322, and the rotating block 322 is rotatably disposed on the mounting block 311. Specifically, the mounting block 311 has been seted up near the lateral wall of grip block 321 and has been slided groove 3111, and the groove 3111 that slides extends along vertical direction, and the both ends of the groove 3111 that slides all are the closed setting. One side wall of the mounting block 311 is provided with a plurality of through holes 3113, and the through holes 3113 are all communicated with the sliding groove 3111; a plurality of screw holes 3114 have been seted up to the relative lateral wall of installation piece 311, and a plurality of screw holes 3114 all are linked together with groove 3111 that slides. In this embodiment, the number of the threading holes 3113 and the number of the screw holes 3114 are three, and the threading holes 3113 correspond to the screw holes 3114 one to one. The rotating block 322 is provided with a rotating hole 3223, a screw 3115 penetrates through the rotating hole 3223, and the rotating block 322 is rotatably connected with the screw 3115. One end of the screw 3115 is screw-fitted into one of the screw holes 3114, and the other end of the screw 3115 passes through the corresponding through hole. A nut 3116 is screwed into one end of the screw 3115 passing through the through hole, and a sidewall of the nut 3116 abuts against a sidewall of the mounting block 311, so that the firmness of the screw 3115 mounted on the mounting block 311 is increased.
With continued reference to fig. 2 and 3, the two parallel sidewalls of the rotating block 322 respectively abut against the two parallel inner sidewalls of the sliding groove 3111, and the sliding groove 3111 guides the rotating block 322, thereby increasing the stability of the rotation of the rotating block 322. A gap is reserved between the clamping block 321 and the mounting block 311, and the rotation angle of the clamping block 321 is increased. The side wall of the clamping block 321 close to the mounting block 311 is provided with a first rounded corner 3213, and the first rounded corner 3213 further increases the rotation angle of the clamping block 321.
Referring to fig. 3, a first engaging groove 3121 is formed in a side wall of the positioning block 312 close to the clamping block 321, and a second engaging groove 3211 is formed in a side wall of the clamping block 321 close to the positioning block 312. The first snap groove 3121 and the second snap groove 3211 may be arc-shaped grooves, square-shaped grooves, or any other shapes, which are not limited herein. In this embodiment, the first snap groove 3121 and the second snap groove 3211 are both arc-shaped grooves. The first catching groove 3121 is fitted to one side of the anchor cable 2, thereby increasing a contact area between the positioning block 312 and the anchor cable 2. The second clamping groove 3211 is adapted to the opposite side of the anchor cable 2, so that the contact area between the clamping block 321 and the anchor cable 2 is increased, and the firmness of clamping the anchor cable 2 by the positioning block 312 and the clamping block 321 is increased.
With continued reference to fig. 3, a plurality of first flanges 3122 are fixedly disposed in the first snap groove 3121, the plurality of first flanges 3122 are equally spaced apart along a length direction of the first snap groove 3121, a plurality of second flanges 3212 are fixedly disposed in the second snap groove 3211, and the plurality of second flanges 3212 are equally spaced apart along a length direction of the second snap groove 3211. The plurality of first flanges 3122 increase the friction between the positioning block 312 and the anchor cable 2, and the plurality of second flanges 3212 increase the friction between the clamping block 321 and the anchor cable 2, thereby increasing the firmness of the positioning block 312 and the clamping block 321 in clamping the anchor cable 2.
Referring to fig. 2 and 3, a supporting component 4 for fixing the clamping block 321 is arranged on the positioning block 312, the supporting component 4 includes a sliding block 41 and a screw rod 42, the sliding block 41 includes an integrally formed supporting portion 411 and a sliding portion 412, the sliding portion 412 is in sliding fit with the sliding groove 3111, the supporting portion 411 is abutted against the side wall of the mounting block 311 near the side wall of the mounting block 311, and the stability of sliding of the sliding portion 412 is increased. The one end of lead screw 42 is passed the installation piece 311 and is located the groove 3111 that slides, lead screw 42 and installation piece 311 screw-thread fit, and the lead screw 42 is located the one end of sliding in the groove 3111 and is rotated with the portion 412 that slides and be connected, and the other end welding of lead screw 42 has knob 43, and a plurality of grooves 431 that hold have been seted up to the lateral wall of knob 43, and a plurality of grooves 431 that hold are circumference evenly distributed. The staff can rotate lead screw 42 through rotatory knob 43, and lead screw 42 drives the portion 412 that slides towards the direction that is close to or keeps away from grip block 321 and slides, and the portion 412 that slides drives supporting part 411 towards the direction that is close to or keeps away from grip block 321 and removes, and supporting part 411 has the fixed action to grip block 321, has increased grip block 321 and locating piece 312 centre gripping anchor rope 2's fastness.
With continued reference to fig. 2 and 3, a driving portion 3221 is integrally formed on a side wall of the clamping block 321 away from the positioning block 312, a side wall of the supporting portion 411 close to the driving portion 3221 abuts against a side wall of the driving portion 3221, a side wall of the supporting portion 411 away from the driving portion 3221 abuts against a side wall of the mounting block 311, the supporting portion 411 has a limiting effect on the driving portion 3221, and can limit rotation of the driving portion 3221, so that rotation of the clamping block 321 is limited, and firmness of clamping the anchor cable 2 by the clamping block 321 and the positioning block 312 is further increased.
Referring to fig. 2, the driving part 3221 is provided with a second rounded corner 3222 near a side wall of the supporting part 411, and the supporting part 411 is provided with a third rounded corner 413 near the side wall of the driving part 3221. When the worker slides the supporting portion 411 between the driving portion 3221 and the mounting block 311, the second rounded corner 3222 and the third rounded corner 413 reduce the contact area between the supporting portion 411 and the driving portion 3221, so that the friction force between the supporting portion 411 and the driving portion 3221 is reduced, and the convenience of the worker inserting the supporting portion 411 between the driving portion 3221 and the mounting block 311 is improved.
By adopting the structure, the construction method of the deep foundation pit steel sheet pile and anchor cable supporting system applied in the embodiment of the application comprises the following steps:
the method comprises the following steps: driving all the steel sheet piles 1 into the ground by using a pile driver;
step two: determining a hole forming position on the steel sheet pile 1 and marking;
step three: forming a through hole for an anchor cable 2 to pass through at a marked position on the steel sheet pile 1;
step four: the drilling machine is in place and is kept stable;
step five: the drilling machine drives the drill rod to rotate, and the drill rod drives the drill bit to advance so that the drill bit and the drill rod sequentially penetrate through the through hole and are inserted into the rock body;
step six: after the drill bit reaches the bottom, the last section of drill rod is disassembled, and the anchor cable 2 is put in and taken out of the drill rod;
step seven: injecting the slurry into a drill rod, slowly withdrawing the drill rod while injecting the slurry, and stopping injecting the slurry when the slurry reaches an orifice of 20-40 mm;
step eight: shearing an anchor cable 2 penetrating through one end of the steel sheet pile 1;
step nine: three bolts are arranged on the fixing part 3117 in a penetrating manner, so that the three bolts are in threaded fit with the steel sheet pile 1, and the clamping assembly 3 is fixed on the steel sheet pile 1;
step ten: one end of the anchor cable 2 extending out of the steel sheet pile 1 is located between the positioning block 312 and the clamping block 321, the anchor cable 2 is clamped and matched with the first clamping groove 3121 on the positioning block 312, then the rotating block 322 is rotated to drive the clamping block 321 to rotate, so that the side wall of the clamping block 321 is abutted against the side wall of the positioning block 312, at the moment, the anchor cable 2 is clamped and matched with the second clamping groove 3211, and the first clamping groove 3121 and the second clamping groove 3211 form a space through which the anchor cable 2 passes. The staff rotates lead screw 42 through rotatory rotation, and lead screw 42 drives the portion 412 that slides towards the direction that is close to grip block 321 in the groove 3111 that slides, and the portion 412 that slides drives the supporting part 411 towards the direction that is close to grip block 321 and slides to make supporting part 411 butt in the lateral wall of drive portion 3221, supporting part 411 has the supporting role to drive portion 3221, thereby has the fixed action to grip block 321, has increased the fastness of grip block 321 and locating piece 312 centre gripping anchor rope 2.
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 (8)
1. A construction method of a deep foundation pit steel sheet pile (1) and anchor rope (2) supporting system is characterized by comprising the following steps:
the method comprises the following steps: driving all the steel sheet piles (1) into the ground by using a pile driver;
step two: determining a hole forming position on the steel sheet pile (1) and marking;
step three: forming a through hole for an anchor cable (2) to pass through at a marked position on the steel sheet pile (1);
step four: the drilling machine is in place and is kept stable;
step five: the drilling machine drives a drill rod to rotate, and the drill rod drives a drill bit to advance so that the drill bit and the drill rod sequentially penetrate through the through hole and are inserted into a rock body;
step six: after the drill bit reaches the bottom, the last section of drill rod is disassembled, and the anchor cable (2) is put in and taken out of the drill rod;
step seven: injecting the grout into the drill rod, withdrawing the drill rod while injecting the grout, and stopping injecting the grout when the grout reaches the orifice of 20-40 mm;
step eight: shearing the anchor cable (2) penetrating through one end of the steel sheet pile (1);
step nine: a clamping assembly (3) is arranged on the steel sheet pile (1);
step ten: clamping one end of the anchor cable (2) extending out of the steel sheet pile (1) through the clamping assembly (3);
the clamping assembly (3) comprises a positioning piece (31) and a clamping piece (32), the positioning piece (31) comprises an installation block (311) and a positioning block (312), the installation block (311) is fixed on the steel sheet pile (1), and the positioning block (312) is fixed on the installation block (311); the clamping piece (32) comprises a clamping block (321) and a rotating block (322) which are fixedly connected, and the rotating block (322) is rotatably arranged on the mounting block (311); a first clamping groove (3121) for positioning the anchor cable (2) is formed in the positioning block (312), and a second clamping groove (3211) for positioning the anchor cable (2) is formed in the side wall, close to the positioning block (312), of the clamping block (321); the mounting block (311) is provided with a supporting component (4) for fixing the clamping piece (32) to rotate;
the supporting component (4) comprises a sliding block (41) and a screw rod (42), the sliding block (41) comprises a supporting part (411) and a sliding part (412) which are fixedly connected, a sliding groove (3111) is formed in the mounting block (311), and the sliding part (412) is matched with the sliding groove (3111) in a sliding mode; one end of the screw rod (42) penetrates through the mounting block (311) and is positioned in the sliding groove (3111), the screw rod (42) is in threaded fit with the mounting block (311), and one end of the screw rod (42) positioned in the sliding groove (3111) is rotatably connected with the sliding part (412); a driving part (3221) is fixedly arranged on the clamping block (321), one side wall of the supporting part (411) abuts against the side wall of the driving part (3221), and the side wall of the supporting part (411) departing from the driving part (3221) abuts against the surface of the mounting block (311).
2. The construction method of the deep foundation pit steel sheet pile (1) and anchor cable (2) supporting system according to claim 1, characterized in that: one side wall of the mounting block (311) is provided with a plurality of penetrating holes (3113), and the penetrating holes (3113) are communicated with the sliding groove (3111); a plurality of threaded holes (3114) are formed in the side wall, opposite to the mounting block (311), and the threaded holes (3114) are communicated with the sliding groove (3111); the penetrating holes (3113) correspond to the threaded holes (3114) one by one; a rotating hole is formed in the rotating block (322), a screw rod (3115) penetrates through the rotating hole, and the rotating block (322) is rotatably connected with the screw rod (3115); one end of the screw rod (3115) is in threaded fit with one of the threaded holes (3114), and the other end of the screw rod (3115) passes through the corresponding through hole.
3. The construction method of the deep foundation pit steel sheet pile (1) and anchor cable (2) supporting system according to claim 2, characterized in that: the clamping block (321) is close to the side wall of the mounting block (311) and has a gap with the mounting block (311).
4. The construction method of the deep foundation pit steel sheet pile (1) and anchor cable (2) supporting system according to claim 3, characterized in that: the clamping block (321) is provided with a first round angle (3213) close to the side wall of the mounting block (311).
5. The construction method of the deep foundation pit steel sheet pile (1) and anchor cable (2) supporting system according to claim 1, characterized in that: the side wall of the driving part (3221) close to the supporting part (411) is provided with a second round corner (3222), and the side wall of the supporting part (411) close to the driving part (3221) is provided with a third round corner (413).
6. The construction method of the deep foundation pit steel sheet pile (1) and anchor cable (2) supporting system according to claim 1, characterized in that: the mounting block (311) is provided with a positioning groove (3112), the positioning block (312) is matched with the positioning groove (3112) in a clamping manner, and the positioning block (312) is fixedly connected with the mounting block (311).
7. The construction method of the deep foundation pit steel sheet pile (1) and anchor cable (2) supporting system according to claim 1, characterized in that: and a knob (43) is fixedly arranged at one end of the screw rod (42) far away from the sliding block (41).
8. The construction method of the deep foundation pit steel sheet pile (1) and anchor cable (2) supporting system according to claim 1, characterized in that: a plurality of first flanges (3122) are fixedly arranged in the first clamping groove (3121), and a plurality of second flanges (3212) are fixedly arranged in the second clamping groove (3211).
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| CN110016912A (en) * | 2019-05-24 | 2019-07-16 | 山东省水利科学研究院 | A kind of mixing pile drilling rod anti-block apparatus and working method |
| CN111236257A (en) * | 2020-03-10 | 2020-06-05 | 云南建投第一勘察设计有限公司 | Novel foundation pit supporting structure |
| CN210766795U (en) * | 2019-07-27 | 2020-06-16 | 张毅 | Support device for municipal deep foundation pit construction |
| CN111794247A (en) * | 2020-07-28 | 2020-10-20 | 广东万信建设工程科技有限公司 | Foundation pit supporting structure and construction method thereof |
| CN212129157U (en) * | 2020-03-16 | 2020-12-11 | 云南建投基础工程有限责任公司 | Foundation pit supporting structure with steel sheet piles and anchor cables |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133245B (en) * | 2014-02-24 | 2018-05-25 | Inct有限公司 | The construction method of earth anchor and earth anchor |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110016912A (en) * | 2019-05-24 | 2019-07-16 | 山东省水利科学研究院 | A kind of mixing pile drilling rod anti-block apparatus and working method |
| CN210766795U (en) * | 2019-07-27 | 2020-06-16 | 张毅 | Support device for municipal deep foundation pit construction |
| CN111236257A (en) * | 2020-03-10 | 2020-06-05 | 云南建投第一勘察设计有限公司 | Novel foundation pit supporting structure |
| CN212129157U (en) * | 2020-03-16 | 2020-12-11 | 云南建投基础工程有限责任公司 | Foundation pit supporting structure with steel sheet piles and anchor cables |
| CN111794247A (en) * | 2020-07-28 | 2020-10-20 | 广东万信建设工程科技有限公司 | Foundation pit supporting structure and construction method thereof |
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