CN111877362B - Cast-in-situ bored pile reinforcing mesh fixing structure and method - Google Patents
Cast-in-situ bored pile reinforcing mesh fixing structure and method Download PDFInfo
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- CN111877362B CN111877362B CN202010781220.8A CN202010781220A CN111877362B CN 111877362 B CN111877362 B CN 111877362B CN 202010781220 A CN202010781220 A CN 202010781220A CN 111877362 B CN111877362 B CN 111877362B
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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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
The utility model relates to a bored concrete pile reinforcing bar net fixed knot constructs, insert the slope protection stake of locating on the foundation ditch lateral wall including foundation ditch and many, it is adjacent be provided with many horizontal strengthening rib and many respectively with each that are parallel to each other between the slope protection stake horizontal strengthening rib is cross fixed's vertical strengthening rib, many horizontal strengthening rib and many it forms a pressure muscle net jointly to erect the strengthening rib, one side that pressure muscle net is close to the foundation ditch lateral wall is provided with reinforcing bar net piece, each horizontal strengthening rib and each the junction of erecting the strengthening rib all is provided with the anchor subassembly that can insert in the foundation ditch lateral wall soil body. This application has the stability that can improve soil dado between the stake to the security that has increased foundation ditch support and the effect of stability.
Description
Technical Field
The application relates to the technical field of foundation pit supporting, in particular to a bored pile fixing structure and a fixing method.
Background
At present, when a building is built, a foundation pit needs to be excavated, and when the building is constructed in the foundation pit, the foundation pit needs to be supported under the common condition. The foundation pit support is a supporting, blocking, 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 existing foundation pit supporting structure generally comprises a plurality of slope protection piles arranged on the side wall of the foundation pit, and the slope protection piles are used for supporting the side wall of the foundation pit.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: in the building construction process, often lack the support between the adjacent slope protection stake, and lack the security and the stability that can influence the foundation ditch to the support between the adjacent slope protection stake.
Disclosure of Invention
To prior art exist not enough, the utility model aims at providing a bored concrete pile reinforcing bar net fixed knot constructs, has the stability that can improve the soil dado between the stake to the effect of the security and the stability of foundation ditch support has been increased, the utility model aims at providing a bored concrete pile reinforcing bar net fixed knot constructs's fixed knot method, has the effect of guaranteeing foundation ditch support's stability when simplifying construction flow.
The application provides a bored concrete pile reinforcing bar net fixed knot constructs adopts following technical scheme:
bored concrete pile reinforcing bar net fixed knot constructs, insert the slope protection stake of locating on the foundation ditch lateral wall including foundation ditch and many, it is adjacent be provided with many horizontal strengthening rib and many respectively with each that are parallel to each other between the slope protection stake horizontal strengthening rib is cross fixed perpendicular strengthening rib, many horizontal strengthening rib and many it forms a pressure muscle net jointly to erect the strengthening rib, one side that pressure muscle net is close to the foundation ditch lateral wall is provided with the reinforcing bar net piece, each horizontal strengthening rib and each the junction of erecting the strengthening rib all is provided with the anchor subassembly that can insert in the foundation ditch lateral wall soil body.
Through adopting above-mentioned technical scheme, install reinforcing bar net piece between adjacent slope protection stake, make reinforcing bar net piece laminating pile soil body, be the cross welded fastening with many horizontal strengthening rib that are parallel to each other and many vertical strengthening rib that are parallel to each other and form the pressure muscle net, insert the relative both ends of horizontal strengthening rib along the one side that adjacent slope protection stake is close to each other, make in the tip of horizontal strengthening rib inserts the slope protection stake, be connected pressure muscle net and reinforcing bar net piece through the anchor subassembly, whole process has the stability that can improve the soil dado between the stake, thereby the security that has increased foundation ditch supporting and the effect of stability.
Preferably, each horizontal strengthening rib and each the L-shaped groove that jack and bisymmetry set up is all seted up to the junction of erecting the strengthening rib, each the L-shaped groove includes that the notch slides the groove and the perpendicular second that just is linked together of diapire with first groove of sliding of reinforcing bar net piece back to the reinforcing bar net piece, one side that first groove of sliding and second slide groove are close to the jack all is linked together with the jack, the anchor subassembly including passing the jack and inserting the anchor pole of locating in the foundation ditch lateral wall soil body and set up on the outer peripheral face of anchor pole and with L shape groove assorted fixed block, the fixed block along the notch department shift in first groove of sliding, just the fixed block slides in the second groove of sliding in the intercommunication department in first groove of sliding and second groove of sliding.
Through adopting above-mentioned technical scheme, under the connected action of sliding of fixed block and first groove and the second groove of sliding, make anchor rod joint in the jack to make anchor rod peg graft in the soil body between the adjacent slope protection stake, be connected pressure muscle net and reinforcing bar net piece through the anchor rod, thereby make the soil body between the adjacent slope protection stake of laminating that the reinforcing bar net piece can be inseparabler.
Preferably, the anchor rod is the one end open-ended cavity body of rod, the opening part integrated into one piece of anchor rod has the stopper that is linked together with the anchor rod, the stopper with the junction looks butt of the horizontal strengthening rib and the vertical strengthening rib at jack place, be provided with in the stopper and be used for locking the fixed block in the second locking subassembly that slides the inslot.
Through adopting above-mentioned technical scheme, the setting of locking Assembly is used for locking the fixed block in the second groove that slides to make more firm being fixed in the jack of anchor rod.
Preferably, the locking assembly comprises an accommodating cavity arranged in the limiting block, and an elastic piece, a blocking piece and a locking rod which are arranged in the accommodating cavity; the locking device comprises a limiting block, a locking hole communicated with an accommodating cavity is formed in one side, far away from the anchoring rod, of the limiting block, the opposite ends of an elastic piece are respectively abutted to one side, close to the locking hole, of a blocking piece and the inner end wall, provided with the locking hole, of the accommodating cavity, of the blocking piece, the blocking piece can slide back and forth along the inner side wall of the accommodating cavity in the stretching direction of the elastic piece, the elastic piece is sleeved on a locking rod, one end of the locking rod is rotatably connected with a locking block perpendicular to the locking rod, the locking block and the locking hole are both rectangular, the size of the cross section area of the locking block is smaller than that of the locking hole, the locking block penetrates through the locking hole and is abutted to the end face, far away from the anchoring rod, of the locking rod, one end, far away from the locking block, penetrates through the blocking piece and extends out of the accommodating cavity, the locking rod is fixedly connected with the blocking piece, and communicating holes corresponding to the positions of transverse strengthening ribs and vertical reinforcing ribs are further formed in the connecting positions of the locking rod, the communicating hole is communicated with the second sliding groove, and one end, far away from the locking block, of the locking rod penetrates through the communicating hole to extend into the second sliding groove to be in inserting fit with the fixing block.
By adopting the technical scheme, when the locking rod does not lock the fixed block, the direction of the locking block is staggered with the direction of the locking hole, the locking block abuts against the end face of the limiting block, which is back to the anchoring rod, and at the moment, the elastic piece is in a compressed state and has outward tension under the extrusion of the blocking piece; when the fixed block slided in the second groove that slides, the locking piece rotated for the direction of locking piece is unanimous with the locking hole, and under the reset action of spring, the spring promoted the locking lever and passed the intercommunicating pore and extend to the second inslot that slides far away from the one end of locking piece, and the locking lever is pegged graft in the fixed block simultaneously, thereby reaches the purpose of locking the fixed block in the second inslot that slides.
Preferably, the end face, away from the anchor rod, of the locking block is provided with a pull ring.
Through adopting above-mentioned technical scheme, the setting of pull ring is convenient for the staff to the operation of locking piece.
Preferably, a plurality of pouring holes communicated with the anchoring rod are formed in the peripheral surface of the anchoring rod, and a pointed end is arranged at one end, far away from the limiting block, of the anchoring rod.
Through adopting above-mentioned technical scheme, the setting of tip is convenient for the anchor pole to insert in the soil body, and the setting of watering hole is used for pouring into cement mortar in the well kenozooecium of anchor pole to make the grout that pours permeate through the watering hole and will be located near the soil body solidification of anchor pole, and then make more firm being fixed in the soil body of anchor pole.
Preferably, the anchoring rod is arranged obliquely downwards towards one end close to the reinforcing mesh.
Through adopting above-mentioned technical scheme, the slope of anchor rod is provided with downwards and helps accelerating the velocity of flow of pouring into the interior grout of anchor rod.
Preferably, a sealing plug is arranged at the communication position of the limiting block and the anchoring rod, and the sealing plug is in threaded connection with the communication position of the limiting block and the anchoring rod.
Through adopting above-mentioned technical scheme, the setting of sealing plug is used for closing the intercommunication department of stopper and anchor pole.
Preferably, the end surface of the sealing plug, which faces away from the anchoring rod, is provided with a lifting ring.
Through adopting above-mentioned technical scheme, the staff of being convenient for through the bail rotation sealing plug of setting up of bail.
A fixing method for adopting the arbitrary drilling cast-in-place pile reinforcing mesh fixing structure comprises the following steps:
the method comprises the following steps: a plurality of parallel transverse reinforcing ribs and a plurality of parallel vertical reinforcing ribs are welded and fixed in a cross mode to form a rib pressing net, and the opposite two ends of each transverse reinforcing rib are inserted along the side, close to each other, of the adjacent slope protection piles, so that the end parts of the transverse reinforcing ribs are inserted into the slope protection piles;
step two: mounting a reinforcing mesh sheet on one side of the reinforcing mesh close to the side wall of the foundation pit;
step three: inserting the anchoring rod into the jack obliquely downwards, enabling the tip of the anchoring rod to extend into a soil body on the side wall of the foundation pit, rotating the anchoring rod to enable the fixing block to slide into the second sliding groove, and enabling the locking rod to penetrate through the communicating hole to extend into the second sliding groove to be in splicing fit with the fixing block, so that the fixing block is locked in the second sliding groove;
step four: grouting cement slurry into the anchoring rod, wherein the cement slurry permeates into a soil body on the side wall of the foundation pit through the grouting hole and is used for solidifying the soil body near the anchoring rod, so that the anchoring rod is more firmly inserted into the soil body on the side wall of the foundation pit, and the sealing plug is in threaded connection with a communication position of the limiting block and the anchoring rod;
step five: and (5) injecting fine aggregate concrete to the joint of the reinforcing mesh and the reinforcing mesh.
By adopting the technical scheme, the reinforcing mesh is installed on the soil body between the piles, then a plurality of transverse reinforcing ribs and a plurality of vertical reinforcing ribs are in cross welding fixation to form a reinforcing mesh, the reinforcing mesh is arranged on one side of the reinforcing mesh back to the soil body between the piles, then a plurality of anchoring rods are respectively inserted into the joints between the transverse reinforcing ribs and the vertical reinforcing ribs, the fixing blocks are fixed in the second sliding grooves through the locking rods, cement slurry is poured into each anchoring rod, the cement slurry permeates into the soil body on the side wall of the foundation pit through the pouring holes, the soil body near the anchoring rods is solidified, the sealing plugs are covered at the opening parts of the anchoring rods, finally, fine stone concrete is poured into the joints between the reinforcing mesh and the reinforcing mesh, and the construction process is simplified while the stability of foundation pit support is ensured.
In summary, the present application includes at least one of the following beneficial technical effects:
1. install reinforcing bar net piece between adjacent slope protection stake, make reinforcing bar net piece laminating pile soil body, be the cross welded fastening with many horizontal strengthening rib that are parallel to each other and many vertical strengthening rib that are parallel to each other and form the pressure muscle net, insert the relative both ends of horizontal strengthening rib along the one side that adjacent slope protection stake is close to each other, make the tip of horizontal strengthening rib insert in the slope protection stake, be connected pressure muscle net and reinforcing bar net piece through the anchor subassembly, whole process has the stability that can improve the native dado between the stake, thereby the security of excavation supporting and the effect of stability have been increased.
Drawings
Fig. 1 is a schematic view of the overall structure of the present application.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.
FIG. 4 is a cross-sectional structural schematic view of the anchor assembly and locking assembly of the present application.
Fig. 5 is a partially enlarged schematic view of a portion C in fig. 4.
Description of reference numerals: 1. slope protection piles; 2. pressing a rib net; 21. transverse strengthening ribs; 22. erecting reinforcing ribs; 23. a jack; 24. an L-shaped slot; 241. a first sliding groove; 242. a second sliding groove; 25. a communicating hole; 3. an anchor assembly; 31. an anchoring rod; 311. a tip; 312. pouring holes; 32. a fixed block; 33. a limiting block; 331. a locking hole; 332. a sealing plug; 333. lifting a ring; 4. reinforcing mesh sheets; 5. a locking assembly; 51. an accommodating chamber; 52. an elastic member; 53. a baffle plate; 54. a locking lever; 541. a locking block; 542. and (4) a pull ring.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses drilling bored concrete pile reinforcing bar net fixed knot constructs. As shown in fig. 1, the foundation pit slope protection device comprises a foundation pit and a plurality of slope protection piles 1 inserted on the side wall of the foundation pit, wherein a rib pressing net 2 and a reinforcing mesh 4 are arranged between adjacent slope protection piles 1, the rib pressing net 2 is arranged on one side of the reinforcing mesh 4, which is opposite to the soil body between the piles, and a plurality of anchoring assemblies 3 are inserted on the rib pressing net 2; the reinforcing mesh 4 is a square reinforcing mesh with 100mm multiplied by 200mm and 6mm thickness. The bar pressing net 2 and the reinforcing mesh 4 are connected through the anchoring component 3, so that the reinforcing mesh 4 can be attached to the soil body between the adjacent slope protection piles 1 more closely.
As shown in fig. 1 and 2, the rib pressing net 2 includes a plurality of transverse reinforcing ribs 21 parallel to each other and a plurality of vertical reinforcing ribs 22 parallel to each other, and the plurality of transverse reinforcing ribs 21 and the plurality of vertical reinforcing ribs 22 are welded and fixed in a cross manner; the number of the anchoring assemblies 3 is consistent with the number of the joints of each transverse reinforcing rib 21 and each vertical reinforcing rib 22 in the rib pressing net 2, and each anchoring assembly 3 is inserted into the joint of each transverse reinforcing rib 21 and each vertical reinforcing rib 22. Two ends of each transverse strengthening rib 21 extend out of the two vertical strengthening ribs 22 on the outermost side respectively, two opposite ends of each transverse strengthening rib 21 are inserted into the two adjacent slope protection piles 1 respectively, and the depth of each end of each transverse strengthening rib 21 inserted into the slope protection pile 1 is not less than 15 cm. In this embodiment, the transverse reinforcing ribs 21 are made of reinforcing steel bars with a diameter of 20@1000mm, the vertical reinforcing ribs 22 are made of reinforcing steel bars with a diameter of 20@1000mm, and the slope protection pile 1 is made of a cast-in-place bored pile.
As shown in fig. 2, the connection between each transverse reinforcing rib 21 and each vertical reinforcing rib 22 is provided with a jack 23 and two L-shaped grooves 24; two L shape grooves 24 set up relatively, and each L shape groove 24 includes that first groove 241 and the second groove 242 of sliding slide, and the notch in first groove 241 of sliding is back to reinforcing bar net piece 4, and the second groove 242 of sliding is perpendicular and be linked together with the diapire in first groove 241 of sliding, and first groove 241 and second groove 242 of sliding are close to one side of jack 23 and all are linked together with jack 23.
As shown in fig. 2 and 3, the anchoring assembly 3 includes an anchoring rod 31 and a fixing block 32; the anchor rod 31 is a hollow rod body with one open end, two fixing blocks 32 are arranged, the two fixing blocks 32 are fixedly connected to two opposite sides of the outer peripheral surface of the anchor rod 31, and each fixing block 32 is matched with each L-shaped groove 24. A limiting block 33 is integrally formed at the opening of the anchoring rod 31, and the limiting block 33 is communicated with the anchoring rod 31; the stopper 33 is coaxially arranged with the anchoring rod 31, and the outer diameter of the stopper 33 is larger than that of the anchoring rod 31. One end of the anchoring rod 31 far away from the stopper 33 penetrates through the jack 23 and extends into the soil body on the side wall of the foundation pit, and meanwhile, in order to facilitate the anchoring rod 31 to be inserted into the soil body, one end of the anchoring rod 31 far away from the stopper 33 is provided with a pointed end 311 (see fig. 4), and a pointed angle of the pointed end 311 (see fig. 4) is back to the stopper 33. Therefore, when the anchoring rod 31 passes through the jack 23 and extends into the soil body on the side wall of the foundation pit, the limiting block 33 is abutted with the connecting part of the horizontal reinforcing rib 21 and the vertical reinforcing rib 22 where the jack 23 is located; the fixing block 32 slides into the first sliding groove 241 along the notch of the first sliding groove 241, and at this time, the anchoring rod 31 is rotated, and the fixing block 32 slides into the second sliding groove 242 from the communication position of the first sliding groove 241 and the second sliding groove 242, so that the anchoring rod 31 is clamped in the insertion hole 23.
As shown in fig. 4 and 5, in order to lock the fixing block 32 in the second sliding groove 242, a locking assembly 5 is provided in the stopper 33; two sets of locking assemblies 5 are provided, the two sets of locking assemblies 5 corresponding to the positions of the fixing blocks 32. The locking assembly 5 comprises a containing cavity 51, an elastic piece 52, a baffle plate 53 and a locking rod 54; the accommodating cavity 51 is arranged in the limiting block 33, and the elastic element 52, the blocking piece 53 and the locking rod 54 are arranged in the accommodating cavity 51. A locking hole 331 communicated with the accommodating cavity 51 is formed in one side of the limiting block 33 away from the anchoring rod 31; the elastic element 52 is a spring, one end of the spring is abutted against one side of the blocking piece 53 close to the locking hole 331, and the other end of the spring is abutted against the inner end wall of the accommodating cavity 51 provided with the locking hole 331; the outer peripheral surface of the blocking piece 53 is abutted against the inner side wall of the accommodating cavity 51, and the blocking piece 53 can slide back and forth along the inner side wall of the accommodating cavity 51 in the extension and retraction direction of the spring. The spring is sleeved on the locking rod 54.
As shown in fig. 4 and 5, a locking block 541 is arranged at one end of the locking lever 54, the middle part of one side of the locking block 541, which is close to the locking lever 54, is rotatably connected with the locking lever 54, the locking block 541 and the locking hole 331 are both rectangular, the cross-sectional area of the locking block 541 is smaller than that of the locking hole 331, one end of the locking lever 54, which is far away from the locking block 541, extends to the outside of the accommodating cavity 51 through the blocking piece 53, and the locking lever 54 is fixedly connected with the blocking piece 53. Meanwhile, in order to facilitate pulling the locking block 541 located in the accommodating cavity 51, the end surface of the locking block 541 far away from the anchor rod 31 is provided with a pull ring 542. Therefore, the direction of the locking block 541 is rotated by the pull ring 542, so that the direction of the locking block 541 is consistent with the direction of the locking hole 331, at this time, the locking block 541 passes through the locking hole 331, then the locking block 541 is rotated to make the direction of the locking block 541 misplaced with the locking hole 331, and then one side of the locking block 541, which is close to the locking rod 54, is abutted against the end face, back to the anchoring rod 31, of the limit block 33; at this point, the flap 53 compresses the spring, which is in a compressed state, thereby placing the spring in an outward tension.
As shown in fig. 2 and 5, a communication hole 25 corresponding to the position of the locking rod 54 is further formed at the joint of the horizontal reinforcing rib 21 and the vertical reinforcing rib 22, the communication hole 25 is communicated with the second sliding groove 242, at this time, the locking block 541 is rotated to make the direction of the locking block 541 consistent with the direction of the locking hole 331, so that under the elastic force of the spring, one end of the locking rod 54, which is far away from the locking block 541, passes through the communication hole 25 and extends into the second sliding groove 242 to be in inserted fit with the fixed block 32 in the second sliding groove 242, and the fixed block 32 is locked in the second sliding groove 242.
As shown in fig. 4 and 5, a plurality of pouring holes 312 are formed in the outer circumferential surface of the anchor rod 31, the plurality of pouring holes 312 are all communicated with the anchor rod 31, and the plurality of pouring holes 312 are uniformly distributed along the circumferential direction of the anchor rod 31; meanwhile, the insertion hole 23 is an inclined hole which is obliquely downward toward one end close to the mesh sheet 4, and the anchor rod 31 is inserted along the oblique direction of the inclined hole. The slope of anchor rod 31 and the setting of pouring hole 312, pouring cement thick liquid toward anchor rod 31 in, under the slope effect of anchor rod 31 for grout flow direction pouring hole 312's speed, grout permeates the soil body of foundation ditch lateral wall through pouring hole 312 simultaneously in, thereby makes the soil body that is located near anchor rod 31 solidify, and then makes anchor rod 31 more firm peg graft in the soil body of foundation ditch lateral wall. The sealing plug 332 covers the communication position of the limiting block 33 and the anchoring rod 31, the sealing plug 332 is in threaded connection with the communication position of the limiting block 33 and the anchoring rod 31, and meanwhile, a lifting ring 333 is arranged on the end face, back to the anchoring rod 31, of the sealing plug 332.
The fixing method of the reinforcing mesh fixing structure of the cast-in-situ bored pile comprises the following steps:
the method comprises the following steps: installing the reinforcing mesh 4 between the adjacent slope protection piles 1, so that the reinforcing mesh 4 is attached to the soil body between the piles;
step two: a plurality of parallel transverse reinforcing ribs 21 and a plurality of parallel vertical reinforcing ribs 22 are welded and fixed in a cross mode to form a reinforcing rib pressing net 2, the reinforcing rib pressing net 2 is arranged on one side, back to the soil body between the piles, of the reinforcing mesh sheet 4, and the opposite two ends of each transverse reinforcing rib 21 are inserted along the side, close to each other, of the adjacent slope protection piles 1, so that the end parts of the transverse reinforcing ribs 21 are inserted into the slope protection piles 1;
step three: inserting the anchoring rod 31 into the insertion hole 23 obliquely downwards, so that the pointed end 311 of the anchoring rod 31 extends into the soil body on the side wall of the foundation pit, rotating the anchoring rod 31 to enable the fixing block 32 to slide into the second sliding groove 242, and simultaneously enabling the locking rod 54 to extend into the second sliding groove 242 through the communication hole 25 to be in inserted fit with the fixing block 32, so that the fixing block 32 is locked in the second sliding groove 242;
step four: cement slurry is poured into the anchoring rod 31, the cement slurry permeates into soil on the side wall of the foundation pit through the pouring hole 312 and is used for solidifying the soil near the anchoring rod 31, so that the anchoring rod 31 is more firmly inserted into the soil on the side wall of the foundation pit, and the sealing plug 332 is in threaded connection with a communication position of the limiting block 33 and the anchoring rod 31;
step five: and (3) spraying fine aggregate concrete at the joint of the reinforcing bar net 2 and the reinforcing bar net piece 4.
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 (7)
1. Bored concrete pile reinforcing bar net fixed knot constructs, including foundation ditch and many insert and locate slope protection stake (1) on the foundation ditch lateral wall, its characterized in that: a plurality of transverse reinforcing ribs (21) which are parallel to each other and a plurality of vertical reinforcing ribs (22) which are fixed with each transverse reinforcing rib (21) in a cross shape are arranged between the adjacent slope protection piles (1), the transverse reinforcing ribs (21) and the vertical reinforcing ribs (22) jointly form a rib pressing net (2), a reinforcing mesh (4) is arranged on one side, close to the side wall of the foundation pit, of the rib pressing net (2), and an anchoring assembly (3) capable of being inserted into the soil body of the side wall of the foundation pit is arranged at the joint of each transverse reinforcing rib (21) and each vertical reinforcing rib (22);
each transverse reinforcing rib (21) and each vertical reinforcing rib (22) are provided with a jack (23) and two symmetrically arranged L-shaped grooves (24), each L-shaped groove (24) comprises a first sliding groove (241) with a notch back to the reinforcing mesh (4) and a second sliding groove (242) which is perpendicular to and communicated with the bottom wall of the first sliding groove (241), one sides of the first sliding groove (241) and the second sliding groove (242) close to the jack (23) are communicated with the jack (23), each anchoring assembly (3) comprises an anchoring rod (31) which penetrates through the jack (23) and is inserted into the soil body on the side wall of the foundation pit and a fixing block (32) which is arranged on the peripheral surface of the anchoring rod (31) and matched with the L-shaped groove (24), the fixing block (32) slides into the first sliding groove (241) along the notch of the first sliding groove (241), the fixed block (32) slides into the second sliding groove (242) at the communication position of the first sliding groove (241) and the second sliding groove (242);
the anchoring rod (31) is a hollow rod body with an opening at one end, a limiting block (33) communicated with the anchoring rod (31) is integrally formed at the opening of the anchoring rod (31), the limiting block (33) is abutted to the joint of the transverse reinforcing rib (21) and the vertical reinforcing rib (22) where the jack (23) is located, and a locking assembly (5) used for locking the fixing block (32) in the second sliding groove (242) is arranged in the limiting block (33);
the locking assembly (5) comprises an accommodating cavity (51) arranged in the limiting block (33), an elastic piece (52) arranged in the accommodating cavity (51), a blocking piece (53) and a locking rod (54); the locking device is characterized in that one side, far away from the anchoring rod (31), of the limiting block (33) is provided with a locking hole (331) communicated with the accommodating cavity (51), one side, close to the locking hole (331), of the blocking piece (53) and the inner end wall, provided with the locking hole (331), of the accommodating cavity (51), are abutted to each other at two opposite ends of the elastic piece (52), the blocking piece (53) can slide back and forth along the inner side wall of the accommodating cavity (51) in the stretching direction of the elastic piece (52), the elastic piece (52) is sleeved on the locking rod (54), one end of the locking rod (54) is rotatably connected with a locking block (541) perpendicular to the locking rod (54), the locking block (541) and the locking hole (331) are both set to be rectangular, the size of the cross section area of the locking block (541) is smaller than that of the locking hole (331), the locking block (541) penetrates through the locking hole (331) and is abutted to the end face, far away from the anchoring rod (31) of the limiting block (33), the one end that locking lever (54) kept away from locking piece (541) passes separation blade (53) and extends to outside holding chamber (51), locking lever (54) and separation blade (53) fixed connection, horizontal strengthening rib (21) and perpendicular strengthening rib (22) junction still seted up with corresponding intercommunicating pore (25) in locking lever (54) position, intercommunicating pore (25) and second sliding groove (242) are linked together, locking lever (54) are kept away from the one end of locking piece (541) and are passed intercommunicating pore (25) and extend to in second sliding groove (242) and fixed block (32) grafting cooperation.
2. The cast-in-situ bored pile reinforcing mesh fixing structure according to claim 1, wherein: the end face, far away from the anchor rod (31), of the locking block (541) is provided with a pull ring (542).
3. The cast-in-situ bored pile reinforcing mesh fixing structure according to claim 1, wherein: the outer peripheral surface of the anchoring rod (31) is provided with a plurality of pouring holes (312) communicated with the anchoring rod (31), and one end, far away from the limiting block (33), of the anchoring rod (31) is provided with a pointed head (311).
4. The cast-in-situ bored pile reinforcing mesh fixing structure according to claim 3, wherein: the anchoring rod (31) is obliquely and downwards arranged towards one end close to the reinforcing mesh (4).
5. The cast-in-situ bored pile reinforcing mesh fixing structure according to claim 1, wherein: a sealing plug (332) is arranged at the communication position of the limiting block (33) and the anchoring rod (31), and the sealing plug (332) is in threaded connection with the communication position of the limiting block (33) and the anchoring rod (31).
6. The cast-in-situ bored pile reinforcing mesh fixing structure according to claim 5, wherein: the end surface of the sealing plug (332), which is back to the anchoring rod (31), is provided with a lifting ring (333).
7. A method for fixing a reinforcing mesh fixing structure of a cast-in-situ bored pile according to any one of claims 1 to 6, wherein: the method comprises the following steps:
the method comprises the following steps: installing the reinforcing mesh (4) between adjacent slope protection piles (1) so that the reinforcing mesh (4) is attached to the soil body between the piles;
step two: a plurality of parallel transverse reinforcing ribs (21) and a plurality of parallel vertical reinforcing ribs (22) are welded and fixed in a cross manner to form a reinforcing rib pressing net (2), the reinforcing rib pressing net (2) is arranged on one side, back to the soil body between the piles, of the reinforcing rib net piece (4), and the opposite two ends of each transverse reinforcing rib (21) are inserted along the mutually close side of the adjacent slope protection piles (1), so that the end parts of the transverse reinforcing ribs (21) are inserted into the slope protection piles (1);
step three: inserting the anchoring rod (31) into the insertion hole (23) in an inclined and downward mode, enabling a sharp head (311) of the anchoring rod (31) to extend into soil on the side wall of the foundation pit, rotating the anchoring rod (31) to enable the fixing block (32) to slide into the second sliding groove (242), enabling the locking rod (54) to penetrate through the communication hole (25) to extend into the second sliding groove (242) to be in inserted fit with the fixing block (32), and locking the fixing block (32) into the second sliding groove (242);
step four: grouting cement slurry into the anchoring rod (31), wherein the cement slurry permeates into soil on the side wall of the foundation pit through the grouting hole (312) and is used for solidifying the soil near the anchoring rod (31), so that the anchoring rod (31) is more firmly inserted into the soil on the side wall of the foundation pit, and the sealing plug (332) is in threaded connection with the communication position of the limiting block (33) and the anchoring rod (31);
step five: and (3) spraying fine stone concrete at the joint of the reinforcing bar mesh (2) and the reinforcing bar net piece (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010781220.8A CN111877362B (en) | 2020-08-06 | 2020-08-06 | Cast-in-situ bored pile reinforcing mesh fixing structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN113585243B (en) * | 2021-08-11 | 2022-07-29 | 中铁大桥局集团有限公司 | Cast-in-situ bored pile and construction method thereof |
| CN113737815A (en) * | 2021-10-13 | 2021-12-03 | 福建金鼎建筑发展有限公司 | Foundation pit row pile supporting pile soil reinforcing structure and method |
| CN114592528B (en) * | 2022-04-11 | 2023-12-26 | 北京京水建设集团有限公司 | Foundation pit excavation supporting structure |
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| JP2016148231A (en) * | 2015-02-13 | 2016-08-18 | 孝幸 阿部 | Reduction method of peripheral frictional resistance force in drilled hole of ground anchor free length section |
| CN108222014A (en) * | 2018-01-17 | 2018-06-29 | 启东市建筑设计院有限公司 | A kind of rock bolt device and the foundation pit supporting construction with the device |
| CN210238292U (en) * | 2019-01-28 | 2020-04-03 | 杭州海伦铸钢有限公司 | Self-locking anchorage device |
| CN111172999A (en) * | 2020-02-11 | 2020-05-19 | 中国建筑第八工程局有限公司 | Cast-in-situ bored pile reinforcing mesh fixing structure and method |
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| JP2016148231A (en) * | 2015-02-13 | 2016-08-18 | 孝幸 阿部 | Reduction method of peripheral frictional resistance force in drilled hole of ground anchor free length section |
| CN108222014A (en) * | 2018-01-17 | 2018-06-29 | 启东市建筑设计院有限公司 | A kind of rock bolt device and the foundation pit supporting construction with the device |
| CN210238292U (en) * | 2019-01-28 | 2020-04-03 | 杭州海伦铸钢有限公司 | Self-locking anchorage device |
| CN111172999A (en) * | 2020-02-11 | 2020-05-19 | 中国建筑第八工程局有限公司 | Cast-in-situ bored pile reinforcing mesh fixing structure and method |
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