CN114687352B - Self-stabilizing type broken line sheet pile wall structure - Google Patents
Self-stabilizing type broken line sheet pile wall structure Download PDFInfo
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- CN114687352B CN114687352B CN202210214870.3A CN202210214870A CN114687352B CN 114687352 B CN114687352 B CN 114687352B CN 202210214870 A CN202210214870 A CN 202210214870A CN 114687352 B CN114687352 B CN 114687352B
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- sheet pile
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- soil
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- 239000002689 soil Substances 0.000 claims abstract description 120
- 238000005452 bending Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 22
- 239000010687 lubricating oil Substances 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 1
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 27
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention belongs to the technical field of sheet pile walls, in particular to a self-stabilizing type broken line sheet pile wall structure which is formed by arranging soil nails, sleeves, thread pushing blocks, extension strips and support rods; the screw thread pushing block rotates along the screw hole to push the soil nail to be inserted into the side wall of the foundation pit along the sleeve, the expansion strip is blocked by soil and is bent along the bending trace, so that the expansion strip is bent and unfolded from the notch, the expansion strip is inserted into the soil, the supporting rod rotates out of the storage groove, the supporting rod is inserted into the supporting hole, and the expansion strip is fixedly supported, so that the connection strength between the soil nail and the foundation pit is improved, and the supporting strength of the broken line sheet pile wall is improved; when the pressure of the soil of the side wall of the foundation pit pushes towards the broken line sheet pile wall, the middle part of the foundation pit of the broken line sheet pile wall box is extruded, the soil nails are driven to slide out towards the side wall of the foundation pit under the force of the soil nails, the extension strips are blocked by the soil, and the broken line sheet pile wall is pulled, so that the supporting strength of the broken line sheet pile wall is improved.
Description
Technical Field
The invention belongs to the technical field of sheet pile walls, and particularly relates to a self-stabilizing type broken line sheet pile wall structure.
Background
The sheet pile wall is a continuous sheet pile for preventing soil from collapsing and constructing, can resist soil around a foundation pit and prevent water seepage and soil sliding; the stability of a sheet pile wall structure is usually dependent on the soil pressure of the soil mass on one side of the wall, and in fact on the sheet pile wall-soil mass interaction; sheet pile walls are widely used in construction engineering due to their relatively simple structure and low economy.
One chinese patent with publication number CN109113047B discloses a sheet pile wall enclosure structure, which comprises baffle plates, right angle connecting piles, bottom piles and bearing clamping bases, wherein the baffle plates are mutually clamped and put to be connected to form the wall body of the enclosure structure, two ends of each right angle connecting pile are connected with the baffle plates, each right angle connecting pile is positioned at four corners of the enclosure structure, surrounding rods are arranged on the inner sides of the wall body of the enclosure structure formed by the baffle plates, fixing brackets are arranged between the baffle plates and the right angle connecting piles and the surrounding rods, the bottoms of the bottom piles are fixed below the ground, the baffle plates are arranged at the upper ends of the bottom piles, and the bearing clamping bases are arranged between the upper baffle plate and the lower baffle plate. The baffle plate is provided with the straight plate surface, the inclined plate surface and the clamping notch, has stronger deformation resistance and can bear larger soil pressure or water pressure, the baffle plate is composed of the inner layer plate, the outer layer plate and the elastic connecting rod, has certain buffering capacity and is prevented from being damaged or deformed by impact, and the receiving clamping seat is clamped and connected with the baffle plate through the clamping groove, so that the enclosure structure is convenient to assemble or disassemble.
In the existing foundation pit construction, in order to ensure the stability of the foundation pit, when a straight wall, a single slope section or a plurality of sections of slope foundation pit are excavated, the support stress of the straight line or oblique line pile foundation structure is single, and the base of the straight line or oblique line pile foundation is easy to be impacted by the soil water pressure of the foundation pit to displace and collapse.
Therefore, the invention provides a self-stabilizing type broken line sheet pile wall structure.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a self-stabilizing type folding line sheet pile wall structure, which comprises folding line sheet pile walls, wherein the folding line sheet pile walls are fixed on the side walls of a foundation pit, the tops of the folding line sheet pile walls are formed by a plurality of inclined sheet pile walls, the bottoms of the folding line sheet pile walls are vertical sheet pile walls, and the bottoms of the folding line sheet pile walls are fixed below a bottom wall soil layer of the foundation pit; during working, a broken line plate pile hole is drilled at the outer side of a foundation pit excavated area, a reinforcing steel bar frame is arranged in the hole, a sleeve is uniformly welded on the reinforcing steel bar frame, and a threaded hole of the sleeve is sealed by a plug; pouring concrete in the fold line plate pile holes, and excavating a foundation pit after the concrete is solidified and dried to expose the fold line plate pile walls; besides the soil retaining and water retaining functions of the linear structure, the broken line sheet pile wall utilizes the dead weights of different sections to resist the overturning moment of the inner side soil water pressure around the bottom of the structure in the process of excavating a foundation pit, so that the stability and the safety coefficient of the foundation pit are improved, the compression resistance and the tensile pulling resistance of the structure are increased by utilizing the broken line section, and the supporting strength of the broken line sheet pile wall is improved.
Preferably, soil nails are arranged on the side surfaces of the broken line sheet pile walls and extend into the side walls of the foundation pit; the soil nails are buried into the foundation pit, so that the broken line sheet pile wall and the side wall of the foundation pit are connected into a whole, the compressive strength of the broken line sheet pile wall is improved, and the soil stability of the side wall of the foundation pit is improved.
Preferably, the inside of the broken line sheet pile wall is fixedly connected with a plurality of sleeves, a threaded hole is formed in the inner wall of one side, close to the middle part of the foundation pit, of each sleeve, a threaded push block is arranged in each threaded hole in a threaded mode, each threaded push block is rotationally connected with a soil nail, the outer wall of each soil nail is in sliding fit with the inside of each sleeve, and a hexagonal groove is formed in one surface, far away from each soil nail, of each threaded push block; during operation, the staff twists the screw thread ejector pad through electric spanner and rotates along the screw hole, promotes soil nail along the lateral wall of sleeve insertion foundation ditch, and the degree of depth of the soil nail of the control soil nail of being convenient for inserts the foundation ditch lateral wall of the staff.
Preferably, the inner wall of one side of the sleeve far away from the threaded hole is provided with a plurality of guide grooves, the outer wall of one side of the soil nail close to the sleeve is fixedly connected with a plurality of guide bars, the outer wall of the guide bars is in sliding fit with the inner wall of the guide grooves, one end of the soil nail far away from the broken line sheet pile wall is fixedly connected with a drill bit, the outer ring of the drill bit is provided with a plurality of triangular blades, and the edge of each triangular blade is close to the tip of the drill bit; when the soil nail pushing device works, the screw thread pushing block pushes the soil nail to slide, and the guide bar slides along the guide groove, so that the soil nail is prevented from rotating along with the screw thread pushing block; the drill bit is pushed by the soil nail to be inserted into the side wall of the foundation pit, the triangular blade is convenient for the insertion of the drill bit, the resistance to which the drill bit is subjected is reduced, meanwhile, the drill bit reduces the probability that the soil nail is pulled out of the side wall of the foundation pit, and the stability of the broken line sheet pile wall is improved.
Preferably, the middle part of the sleeve is provided with a ring cavity, the inner ring of the ring cavity is provided with a plurality of through holes, the through holes are communicated with the guide grooves, the bottom of each through hole is fixedly connected with a sealing sheet, the inside of the ring cavity is filled with lubricating oil, the outer side of one end of each guide bar, which is far away from the thread pushing block, is fixedly connected with a plurality of inclined cones, and the tips of the inclined cones are in sliding fit with the sealing sheets; when the guide bar slides along the guide groove, the inclined cone is driven to slide through the sealing sheet, the sealing sheet is punctured, lubricating oil in the annular cavity flows into the guide groove from the through hole, the surface of the soil nail is lubricated, and therefore friction force of the soil nail inserted into the side wall of the foundation pit is further reduced.
Preferably, the inner ring of the annular cavity is fixedly connected with a rubber annular sheet, a plurality of annular holes are formed in the rubber annular sheet, and an elastic ring is arranged in the annular holes; during operation, the rubber ring piece is under the elasticity effect of elastic ring for the inner circle shrink of rubber ring piece to the ring chamber, in pressing in the through-hole with the lubricating oil of ring intracavity, thereby improved the output efficiency of lubricating oil, improved the smoothness nature when soil nail slides in succession.
Preferably, the outer wall of the sleeve is fixedly connected with a plurality of reinforcing rods in a surrounding manner, and the reinforcing rods are distributed in a staggered manner; during operation, the reinforcing rod arranged on the outer wall of the sleeve improves the connection strength between the sleeve and the broken line sheet pile wall, thereby improving the connection strength between the broken line sheet pile wall and the side wall of the foundation pit and further improving the supporting strength of the broken line sheet pile wall.
Preferably, the outer wall of one end of the soil nail far away from the broken line sheet pile wall is provided with a plurality of notches, one side of the notch close to the broken line sheet pile wall is fixedly connected with an extension bar, one side of the extension bar far away from the notch is provided with a plurality of bending marks, and one end of the extension bar far away from the broken line sheet pile wall is arc-shaped; when the soil nail inserts the lateral wall of foundation ditch during operation, the extension strip is blocked by soil and is buckled along the trace of bending for the extension strip is buckled and is expanded from the notch, makes the extension strip insert in the soil, thereby has further improved the joint strength between soil nail and the foundation ditch, has further improved the support strength of broken line sheet pile wall then.
Preferably, the inner wall of the notch is provided with a plurality of supporting holes, one surface of the expansion strip, which is close to the notch, is provided with a storage groove, one end, which is far away from the broken line sheet pile wall, of the storage groove is fixedly connected with a supporting rod, and the end head of the supporting rod is in sliding fit with the supporting holes; when the soil nail works, after the extension strips are bent and unfolded from the notch, the support rods are enabled to rotate out of the storage grooves, the support rods are enabled to be inserted into the support holes, and the extension strips are fixedly supported, so that the support strength of the extension strips is further improved, and the ground grabbing strength of the soil nail is further improved; when the pressure of the soil of the side wall of the foundation pit pushes towards the broken line sheet pile wall, the middle part of the foundation pit of the broken line sheet pile wall box is extruded, the soil nails are driven to slide out towards the side wall of the foundation pit under the force of the soil nails, the extension strips are blocked by the soil, and the broken line sheet pile wall is pulled, so that the supporting strength of the broken line sheet pile wall is improved.
The beneficial effects of the invention are as follows:
1. according to the self-stabilizing type folding line sheet pile wall structure, the folding line sheet pile wall, soil nails, sleeves, thread pushing blocks, expansion strips and support rods are arranged; besides the functions of retaining soil and retaining water of the straight line structure, the broken line sheet pile wall utilizes the dead weights of different sections to resist the overturning moment of the inner side soil water pressure around the bottom of the structure in the process of excavating the foundation pit, so that the stability and the safety coefficient of the foundation pit are improved, and the compression resistance and the tensile pulling resistance of the structure are improved by utilizing broken line sections; the screw thread pushing block rotates along the screw hole to push the soil nail to be inserted into the side wall of the foundation pit along the sleeve, the expansion strip is blocked by soil and is bent along the bending trace, so that the expansion strip is bent and unfolded from the notch, the expansion strip is inserted into the soil, the supporting rod rotates out of the storage groove, the supporting rod is inserted into the supporting hole, and the expansion strip is fixedly supported, so that the connection strength between the soil nail and the foundation pit is improved, and the supporting strength of the broken line sheet pile wall is improved; when the pressure of the soil of the side wall of the foundation pit pushes towards the broken line sheet pile wall, the middle part of the foundation pit of the broken line sheet pile wall box is extruded, the soil nails are driven to slide out towards the side wall of the foundation pit under the force of the soil nails, the extension strips are blocked by the soil, and the broken line sheet pile wall is pulled, so that the supporting strength of the broken line sheet pile wall is improved.
2. The self-stabilizing type folding line sheet pile wall structure is characterized in that a sealing sheet, an inclined cone, a rubber ring sheet and an elastic ring are arranged; when the guide bar slides along the guide groove, the inclined cone is driven to slide across the sealing sheet, the sealing sheet is punctured, the rubber ring sheet is contracted towards the inner ring of the ring cavity under the elastic action of the elastic ring, lubricating oil in the ring cavity is pressed into the through hole, the output efficiency of the lubricating oil is improved, the lubricating oil in the ring cavity flows into the guide groove from the through hole, the surface of the soil nail is lubricated, and therefore the friction force of the soil nail inserted into the side wall of the foundation pit is further reduced.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a front view of a first embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 2 at C;
FIG. 5 is a partial enlarged view at D in FIG. 3;
FIG. 6 is an enlarged view of a portion of FIG. 3 at E;
fig. 7 is a front view of a second embodiment of the present invention;
in the figure: 1. fold line sheet pile wall; 2. a foundation pit; 3. soil nails; 4. a sleeve; 5. a threaded hole; 6. a thread pushing block; 7. a guide groove; 8. a conducting bar; 9. a drill bit; 10. a ring cavity; 11. a through hole; 12. a sealing sheet; 13. an inclined cone; 14. rubber ring pieces; 15. an annular hole; 16. an elastic ring; 17. a reinforcing rod; 18. a notch; 19. an extension bar; 20. bending marks; 21. a support hole; 22. a storage groove; 23. a support rod; 24. a sealing seat; 25. lifting lugs.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
As shown in fig. 1, the self-stabilizing type folding line sheet pile wall structure according to the embodiment of the invention comprises a folding line sheet pile wall 1, wherein the folding line sheet pile wall 1 is fixed on the side wall of a foundation pit 2, the top of the folding line sheet pile wall 1 is formed by a plurality of inclined sheet pile walls, the bottom of the folding line sheet pile wall 1 is a vertical sheet pile wall, and the bottom of the folding line sheet pile wall 1 is fixed below a bottom wall soil layer of the foundation pit 2; during working, a broken line plate pile hole is drilled at the outer side of an excavated area of a foundation pit 2, a reinforcing steel bar frame is arranged in the hole, a sleeve 4 is uniformly welded on the reinforcing steel bar frame, and a threaded hole 5 of the sleeve 4 is sealed by a plug; pouring concrete in the fold line sheet pile holes, and excavating a foundation pit 2 after the concrete is solidified and dried to expose the fold line sheet pile walls 1; besides the functions of retaining soil and retaining water of the linear structure, the broken line sheet pile wall 1 utilizes the dead weights of different sections to resist the overturning moment of the inner side soil water pressure around the bottom of the structure in the excavation process of the foundation pit 2, so that the stability and the safety coefficient of the foundation pit 2 are improved, the functions of compression resistance and tensile pulling resistance of the structure are increased by utilizing the broken line sections, and the supporting strength of the broken line sheet pile wall 1 is improved.
The side face of the broken line sheet pile wall 1 is provided with soil nails 3, and the soil nails 3 extend into the side wall of the foundation pit 2; the soil nails 3 are buried in the foundation pit 2, so that the broken line sheet pile wall 1 and the side wall of the foundation pit 2 are connected into a whole, the compressive strength of the broken line sheet pile wall 1 is improved, and the soil stability of the side wall of the foundation pit 2 is improved.
As shown in fig. 2 to 3, the inside of the broken line sheet pile wall 1 is fixedly connected with a plurality of sleeves 4, a threaded hole 5 is formed in the inner wall of one side of the sleeve 4, which is close to the middle part of the foundation pit 2, a threaded push block 6 is arranged in the threaded hole 5 in a threaded manner, the threaded push block 6 is rotationally connected with the soil nail 3, the outer wall of the soil nail 3 is in sliding fit with the inside of the sleeve 4, and a hexagonal groove is formed in one surface, which is far away from the soil nail 3, of the threaded push block 6; during operation, the staff screws the screw thread ejector pad 6 through electric spanner and rotates along screw hole 5, promotes soil nail 3 and inserts the lateral wall of foundation ditch 2 along sleeve 4, and the degree of depth of the lateral wall of foundation ditch 2 is inserted to the soil nail 3 of staff's control of being convenient for.
The inner wall of one side of the sleeve 4 far away from the threaded hole 5 is provided with a plurality of guide grooves 7, the outer wall of one side of the soil nail 3 close to the sleeve 4 is fixedly connected with a plurality of guide bars 8, the outer wall of the guide bars 8 is in sliding fit with the inner wall of the guide grooves 7, one end of the soil nail 3 far away from the broken line sheet pile wall 1 is fixedly connected with a drill bit 9, the outer ring of the drill bit 9 is provided with a plurality of triangular blades, and the knife edges of the triangular blades are close to the tip of the drill bit 9; during working, the screw thread pushing block 6 pushes the soil nail 3 to slide, and the guide bar 8 slides along the guide groove 7, so that the soil nail 3 is prevented from rotating along with the screw thread pushing block 6; the drill bit 9 is pushed by the soil nail 3 to be inserted into the side wall of the foundation pit 2, the triangular blade is convenient for the insertion of the drill bit 9, the resistance born by the drill bit 9 is reduced, meanwhile, the drill bit 9 reduces the probability that the soil nail 3 is pulled out of the side wall of the foundation pit 2, and the stability of the broken line sheet pile wall 1 is improved.
As shown in fig. 4 to 5, an annular cavity 10 is formed in the middle of the sleeve 4, a plurality of through holes 11 are formed in the inner ring of the annular cavity 10, the through holes 11 are communicated with the guide grooves 7, a sealing sheet 12 is fixedly connected to the bottom of each through hole 11, lubricating oil is filled in the annular cavity 10, a plurality of inclined cones 13 are fixedly connected to the outer side of one end, far away from the thread pushing block 6, of each guide bar 8, and the tips of the inclined cones 13 are in sliding fit with the sealing sheet 12; when the soil nail inserting device works, when the guide strip 8 slides along the guide groove 7, the inclined cone 13 is driven to slide through the sealing sheet 12, the sealing sheet 12 is punctured, lubricating oil in the annular cavity 10 flows into the guide groove 7 from the through hole 11, the surface of the soil nail 3 is lubricated, and therefore the friction force of the soil nail 3 inserted into the side wall of the foundation pit 2 is further reduced.
The inner ring of the annular cavity 10 is fixedly connected with a rubber annular sheet 14, a plurality of annular holes 15 are formed in the rubber annular sheet 14, and an elastic ring 16 is arranged in the annular holes 15; during operation, the rubber ring piece 14 is contracted towards the inner ring of the ring cavity 10 under the elastic action of the elastic ring 16, and lubricating oil in the ring cavity 10 is pressed into the through hole 11, so that the output efficiency of the lubricating oil is improved, and the smoothness of the soil nail 3 during sliding is improved.
As shown in fig. 2, the outer wall of the sleeve 4 is fixedly connected with a plurality of reinforcing rods 17 in a surrounding manner, and the reinforcing rods 17 are distributed in a staggered manner; during operation, the reinforcing rods 17 arranged on the outer wall of the sleeve 4 improve the connection strength between the sleeve 4 and the broken line sheet pile wall 1, so that the connection strength between the broken line sheet pile wall 1 and the side wall of the foundation pit 2 is improved, and then the supporting strength of the broken line sheet pile wall 1 is improved.
As shown in fig. 6, the outer wall of one end of the soil nail 3 far away from the fold line sheet pile wall 1 is provided with a plurality of notches 18, one side of the notch 18 close to the fold line sheet pile wall 1 is fixedly connected with an extension bar 19, one side of the extension bar 19 far away from the notch 18 is provided with a plurality of bending marks 20, and one end of the extension bar 19 far away from the fold line sheet pile wall 1 is arc-shaped; during operation, when the soil nail 3 is inserted into the side wall of the foundation pit 2, the extension strip 19 is blocked by soil and is bent along the bending trace 20, so that the extension strip 19 is bent and unfolded from the notch 18, the extension strip 19 is inserted into the soil, and when the soil pressure of the side wall of the foundation pit 2 is pushed to the broken line sheet pile wall 1, the connection strength between the soil nail 3 and the foundation pit 2 is further improved, and the supporting strength of the broken line sheet pile wall 1 is further improved.
The inner wall of the notch 18 is provided with a plurality of supporting holes 21, one surface of the expansion strip 19 close to the notch 18 is provided with a storage groove 22, one end of the storage groove 22 away from the broken line sheet pile wall 1 is fixedly connected with a supporting rod 23, and the end of the supporting rod 23 is in sliding fit with the supporting holes 21; when the soil nail machine works, after the extension strip 19 is bent and unfolded from the notch 18, the support rod 23 is rotated out of the storage groove 22, the support rod 23 is inserted into the support hole 21, and the extension strip 19 is fixedly supported, so that the support strength of the extension strip 19 is further improved, and the ground grabbing strength of the soil nail 3 is further improved; when the pressure of the soil on the side wall of the foundation pit 2 pushes the broken line sheet pile wall 1, the middle part of the foundation pit 2 of the broken line sheet pile wall 1 is extruded, the soil nails 3 are driven to slide out towards the side wall of the foundation pit 2 under the force of the soil nails, the expansion strips 19 are blocked by the soil, and the broken line sheet pile wall 1 is pulled, so that the supporting strength of the broken line sheet pile wall 1 is improved.
Example two
As shown in fig. 7, in comparative example one, another embodiment of the present invention is: a sealing seat 24 is bolted to one end of the sleeve 4 close to the middle of the foundation pit 2, and a lifting lug 25 is fixedly connected to the side surface of the sealing seat 24; by the sealing seat 24, the probability of cement entering the sleeve 4 during the construction of the foundation pit 2 is avoided; after the construction is accomplished, through seal seat 24, avoid external rainwater and dust to get into the inside of sleeve 4, simultaneously, the lug 25 of setting up, the staff of being convenient for install the diagonal bracing at the later time according to the demand.
When in operation, the device comprises: during construction, a broken line plate pile hole is drilled at the outer side of an excavated area of a foundation pit 2, a reinforcing steel bar frame is installed in the hole, a sleeve 4 is uniformly welded on the reinforcing steel bar frame, and a threaded hole 5 of the sleeve 4 is sealed by a plug; pouring concrete in the fold line sheet pile holes, and excavating a foundation pit 2 after the concrete is solidified and dried to expose the fold line sheet pile walls 1; besides the functions of retaining soil and retaining water of the linear structure, the broken line sheet pile wall 1 utilizes the dead weights of different sections to resist the overturning moment of the inner side soil water pressure around the bottom of the structure in the excavation process of the foundation pit 2, so that the stability and the safety coefficient of the foundation pit 2 are improved, and the compression resistance and the tensile pulling resistance of the structure are improved by utilizing broken line sections;
the stopper in the threaded hole 5 is taken down, the staff screws the screw thread push block 6 through electric spanner and rotates along the threaded hole 5, promote soil nail 3 to drive conducting bar 8 and slide along guide slot 7, drive oblique cone 13 and slide sealing slice 12, puncture sealing slice 12, make the lubricating oil in the ring chamber 10 flow into guide slot 7 from the through-hole 11, make the surface of soil nail 3 obtain lubrication, rubber ring piece 14 is under the elasticity effect of elastic ring 16, make rubber ring piece 14 shrink to the inner circle of ring chamber 10, press the lubricating oil in the ring chamber 10 into in through-hole 11, the output efficiency of lubricating oil has been improved, the smoothness when soil nail 3 slides is improved, soil nail 3 promotes and inserts in the lateral wall of foundation ditch 2, when soil nail 3 inserts the lateral wall of foundation ditch 2, extension strip 19 receives the block of soil and buckle along bending trace 20, make extension strip 19 buckle and expand from notch 18, make extension strip 19 insert in the storage slot 22, make the bracing piece 23 insert in the bracing piece 21, make extension strip 19 fixedly support to the inner circle of ring chamber 14, the pressure line 1 of soil pile 1 when soil pile 1 of soil nail 3 slides, thereby the pile 1 is driven to the broken line 1 is pushed to the broken line, the pile 1 is pushed to the pile 1, thereby the pile 1 is pushed to the broken line is pushed to the soil 1, the pile 1 is pushed to the broken line is pushed to the pile 1, thereby the pile 1 is pushed down to be pushed to the pile 1 is pushed to the broken line is pushed to the pile 1, and is pushed to the pile 1 is pushed to the pile.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a from steady formula broken line sheet pile wall structure which characterized in that: comprises a broken line sheet pile wall (1), wherein the broken line sheet pile wall (1) is fixed on the side wall of a foundation pit (2), the top of the broken line sheet pile wall (1) is composed of a plurality of inclined sheet pile walls, the bottom of the broken line sheet pile wall (1) is a vertical sheet pile wall, and the bottom of the broken line sheet pile wall (1) is fixed below a bottom wall soil layer of the foundation pit (2);
the side face of the broken line sheet pile wall (1) is provided with soil nails (3), and the soil nails (3) extend into the side wall of the foundation pit (2);
the inside rigid coupling of broken line sheet pile wall (1) has a plurality of sleeves (4), screw hole (5) have been seted up to the inner wall of one side that sleeve (4) is close to foundation ditch (2) middle part, screw thread installation screw thread ejector pad (6) in screw hole (5), screw thread ejector pad (6) are connected with soil nail (3) rotation, the outer wall of soil nail (3) and the inside sliding fit of sleeve (4), hexagonal groove has been seted up to the one side that soil nail (3) were kept away from to screw thread ejector pad (6);
the soil nail is characterized in that a plurality of guide grooves (7) are formed in the inner wall of one side, far away from the threaded hole (5), of the sleeve (4), a plurality of guide bars (8) are fixedly connected to the outer wall of one side, close to the sleeve (4), of the soil nail (3), the outer wall of each guide bar (8) is in sliding fit with the inner wall of each guide groove (7), a drill bit (9) is fixedly connected to one end, far away from the broken line sheet pile wall (1), of the soil nail (3), a plurality of triangular blades are arranged on the outer ring of each drill bit (9), and the edges of the triangular blades are close to the tip ends of the drill bits (9);
the middle part of the sleeve (4) is provided with a ring cavity (10), the inner ring of the ring cavity (10) is provided with a plurality of through holes (11), the through holes (11) are communicated with the guide grooves (7), the bottom of each through hole (11) is fixedly connected with a sealing sheet (12), the inside of the ring cavity (10) is filled with lubricating oil, the outer side of one end, far away from the thread pushing block (6), of each guide bar (8) is fixedly connected with a plurality of inclined cones (13), and the tips of the inclined cones (13) are in sliding fit with the sealing sheets (12);
the inner ring of the annular cavity (10) is fixedly connected with a rubber annular sheet (14), a plurality of annular holes (15) are formed in the rubber annular sheet (14), and an elastic ring (16) is arranged in the annular holes (15).
2. The self-stabilizing type folding line sheet pile wall structure according to claim 1, wherein: the outer wall of the sleeve (4) is fixedly connected with a plurality of reinforcing rods (17) in a surrounding mode, and the reinforcing rods (17) are distributed in a staggered mode.
3. The self-stabilizing type folding line sheet pile wall structure according to claim 1, wherein: the soil nail (3) is kept away from the one end outer wall of broken line sheet pile wall (1) and has been seted up a plurality of notch (18), one side rigid coupling that notch (18) are close to broken line sheet pile wall (1) has extension strip (19), a plurality of trace (20) of bending have been seted up to one side that notch (18) were kept away from to extension strip (19), one end that broken line sheet pile wall (1) was kept away from to extension strip (19) is the arc hook-like.
4. A self-stabilizing fold line sheet pile wall structure according to claim 3, wherein: a plurality of supporting holes (21) are formed in the inner wall of the notch (18), a storage groove (22) is formed in one face, close to the notch (18), of the extension strip (19), a supporting rod (23) is fixedly connected to one end, far away from the broken line sheet pile wall (1), of the storage groove (22), and the end head of the supporting rod (23) is in sliding fit with the supporting hole (21).
5. The self-stabilizing type folding line sheet pile wall structure according to claim 1, wherein: one end of the sleeve (4) close to the middle part of the foundation pit (2) is bolted with a sealing seat (24), and the side surface of the sealing seat (24) is fixedly connected with a lifting lug (25).
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| CN202210214870.3A CN114687352B (en) | 2022-03-07 | 2022-03-07 | Self-stabilizing type broken line sheet pile wall structure |
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| CN115341529B (en) * | 2022-09-19 | 2023-09-01 | 中国路桥工程有限责任公司 | Cement stirring grouting reinforcement treatment method and device for deep soft soil foundation |
| CN116591163B (en) * | 2023-07-18 | 2023-09-15 | 山东三箭建设工程管理有限公司 | Sheet pile wall plugging device for reinforcing side wall of foundation |
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