CN114687352A - Self-stabilizing broken line sheet pile wall structure - Google Patents
Self-stabilizing broken line sheet pile wall structure Download PDFInfo
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- CN114687352A CN114687352A CN202210214870.3A CN202210214870A CN114687352A CN 114687352 A CN114687352 A CN 114687352A CN 202210214870 A CN202210214870 A CN 202210214870A CN 114687352 A CN114687352 A CN 114687352A
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- 239000002689 soil Substances 0.000 claims abstract description 112
- 238000005452 bending Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 20
- 239000010687 lubricating oil Substances 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims 8
- 238000010168 coupling process Methods 0.000 claims 8
- 238000005859 coupling reaction Methods 0.000 claims 8
- 239000003351 stiffener Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 5
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 17
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000003014 reinforcing effect Effects 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 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
- 239000000428 dust Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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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- 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
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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
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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
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- Mining & Mineral Resources (AREA)
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- 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, and particularly relates to a self-stabilizing fold line sheet pile wall structure which is characterized in that soil nails, sleeves, threaded push blocks, expansion strips and supporting rods are arranged; the threaded push block rotates along the threaded hole to push the soil nail to be inserted into the side wall of the foundation pit along the sleeve, the extension strip is blocked by soil and is bent along the bending mark, the extension strip is bent and unfolded from the notch, the extension strip is inserted into the soil, the support rod is rotated out of the accommodating groove and is inserted into the support hole, and the extension strip is fixedly supported, so that the connection strength between the soil nail and the foundation pit is improved, and the support strength of the broken line plate pile wall is improved; the pressure of the soil of the lateral wall of foundation ditch is pushed to broken line sheet pile wall and is makeed for the middle part extrusion of broken line sheet pile wall case foundation ditch drives the slide-out in the lateral wall of soil nail atress to the foundation ditch, makes the extension strip receive blockking of soil, thereby drags broken line sheet pile wall, thereby has improved broken line sheet pile wall's support intensity.
Description
Technical Field
The invention belongs to the technical field of sheet pile walls, and particularly relates to a self-stabilizing type fold line sheet pile wall structure.
Background
The sheet pile wall is a continuous sheet pile constructed for preventing soil body collapse, can resist the soil body around the foundation pit, and prevents water seepage and soil body gliding; the stability of the sheet pile wall structure usually depends on the soil pressure of the soil body on one side of the wall body, namely, the interaction between the sheet pile wall and the soil body; due to its relatively simple structure and low economy, sheet pile walls are widely used in construction.
A chinese patent with publication number CN109113047B discloses a sheet pile wall enclosure structure, which includes a baffle, right-angle connecting piles, bottom piles and a receiving cassette, wherein the baffles are mutually clamped and connected to form a wall of the enclosure structure, two ends of the right-angle connecting piles are connected with the baffle, the right-angle connecting piles are located at four corners of the enclosure structure, the inner side of the wall of the enclosure structure formed by the baffles is provided with surrounding rods, fixing brackets are arranged between the baffle and the right-angle connecting piles and the surrounding rods, the bottom of the bottom piles is fixed under the ground, the upper ends of the bottom piles are provided with the baffles, and the receiving cassette is installed between the upper and lower baffles. The baffle plate is provided with the straight plate surface, the inclined plate surface and the clamping groove opening, has strong 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 can avoid being damaged or deformed by impact, and the bearing clamping seat is connected with the baffle plate in a clamping mode 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 multi-section slope foundation pit is excavated, a straight line or oblique line pile foundation (or column plate wall) structure is adopted, the supporting stress of the straight line or oblique line pile foundation structure is relatively single, and the straight line or oblique line pile foundation is very easy to be impacted by the soil water pressure of the foundation pit to be displaced and collapsed.
Therefore, the invention provides a self-stabilizing broken line sheet pile wall structure.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a self-stabilizing broken line sheet pile wall structure which comprises a broken line sheet pile wall, wherein the broken line sheet pile wall is fixed on the side wall of a foundation pit, the top of the broken line sheet pile wall is formed by a plurality of inclined sheet pile walls, the bottom of the broken line sheet pile wall is a vertical sheet pile wall, and the bottom of the broken line sheet pile wall is fixed below a bottom soil layer of the foundation pit; when the device works, a folding plate pile hole is drilled outside the excavation area of a foundation pit, a reinforcing steel bar frame is installed in the hole, sleeves are uniformly welded on the reinforcing steel bar frame, and meanwhile, threaded holes of the sleeves are sealed by using plugs; pouring concrete into the broken line sheet pile hole, and excavating a foundation pit after the concrete is solidified and dried to expose the broken line sheet pile wall; the broken line sheet pile wall has the advantages that the broken line sheet pile wall has the linear structure soil retaining and water retaining functions, the self weights of different sections are utilized, the overturning moment of the inner side soil water pressure around the bottom of the structure in the process of foundation pit excavation is resisted, the stability and the safety coefficient of the foundation pit are increased, the compression resistance and the tensile pulling resistance of the structure are increased by utilizing the broken line sections, and therefore 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 plate pile walls and extend into the side walls of the foundation pit; the inside of foundation ditch is buried underground through soil nail for broken line sheet pile wall and foundation ditch lateral wall are linked together, have not only improved the compressive strength of broken line sheet pile wall, have improved the soil property stability of foundation ditch lateral wall moreover.
Preferably, a plurality of sleeves are fixedly connected inside the fold line plate pile wall, 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 installed inside the threaded hole in a threaded mode, the threaded push block is rotatably connected with the soil nail, the outer wall of the soil nail is in sliding fit with the inside of each sleeve, and a hexagonal groove is formed in one surface, far away from the soil nail, of the threaded push block; during operation, the staff twists the screw ejector pad through electric spanner and rotates along the screw hole, promotes soil nail and inserts the lateral wall of foundation ditch along the sleeve, and the staff of being convenient for controls the degree of depth that soil nail inserted the lateral wall of foundation ditch.
Preferably, the inner wall of one side of the sleeve, which is far away from the threaded hole, is provided with a plurality of guide grooves, the outer wall of one side of the soil nail, which is near to the sleeve, is fixedly connected with a plurality of guide strips, the outer walls of the guide strips are in sliding fit with the inner walls of the guide grooves, one end of the soil nail, which is 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 edges of the triangular blades are close to the tip end of the drill bit; when the soil nail guiding device works, the thread push block pushes the soil nail to slide, and the guide strip slides along the guide groove, so that the soil nail is prevented from rotating along with the thread push block; the drill bit is promoted by the soil nail and is inserted in the lateral wall of foundation ditch, and the triangle blade is convenient for inserting of drill bit, has reduced the resistance that the drill bit received, and simultaneously, the drill bit has reduced the probability that the soil nail was extracted from the lateral wall of foundation ditch, has improved broken line sheet piling wall's stability.
Preferably, the middle part of the sleeve is provided with an annular cavity, the inner ring of the annular cavity is provided with a plurality of through holes, the through holes are communicated with the guide groove, the bottom of each through hole is fixedly connected with a sealing sheet, lubricating oil is filled in the annular cavity, the outer side of one end, away from the thread push block, of each guide bar 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 strip slides along the guide groove, the oblique cone is driven to slide through the sealing thin sheet to puncture the sealing thin sheet, so that lubricating oil in the annular cavity flows into the guide groove from the through hole, the surface of the soil nail is lubricated, and the friction force of the soil nail inserted into the side wall of the foundation pit is further reduced.
Preferably, a rubber ring sheet is fixedly connected to the inner ring of the ring cavity, a plurality of ring holes are formed in the rubber ring sheet, and elastic rings are arranged in the ring holes; during operation, the rubber ring piece is under the elastic force effect of elastic ring for the rubber ring piece is to the inner circle shrink of ring cavity, impresses the lubricating oil in the ring cavity in the through-hole, thereby has improved the output efficiency of lubricating oil, has improved the smoothness nature when soil nail slides then.
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 plate pile wall, so that the connection strength between the broken line plate pile wall and the side wall of the foundation pit is improved, and the support strength of the broken line plate pile wall is improved.
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 each notch, close to the broken line sheet pile wall, is fixedly connected with an extension strip, one side of each extension strip, far away from each notch, is provided with a plurality of bending marks, and one end of each extension strip, far away from the broken line sheet pile wall, is in an arc hook shape; during operation, when soil nail inserted the lateral wall of foundation ditch, the extension strip receives blockking of soil and buckles along the trace of bending for the extension strip is buckled from the notch and is expanded, 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 intensity 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 receiving groove, one end of the receiving groove, which is far away from the fold line plate pile wall, is fixedly connected with a supporting rod, and the end of the supporting rod is in sliding fit with the supporting holes; when the soil nail fixing support is in work, the extension strip is bent and unfolded from the notch, the support rod is rotated out from the accommodating groove, the support rod is inserted into the support hole, and the extension strip is fixedly supported, so that the support strength of the extension strip is further improved, and the ground grabbing strength of the soil nail is further improved; the pressure of the soil of the lateral wall of foundation ditch is pushed to broken line sheet pile wall and is makeed for the middle part extrusion of broken line sheet pile wall case foundation ditch drives the slide-out in the lateral wall of soil nail atress to the foundation ditch, makes the extension strip receive blockking of soil, thereby drags broken line sheet pile wall, thereby has improved broken line sheet pile wall's support intensity.
The invention has the following beneficial effects:
1. the invention relates to a self-stabilizing broken line sheet pile wall structure, which is characterized in that a broken line sheet pile wall, soil nails, sleeves, thread push blocks, expansion strips and supporting rods are arranged; the broken line sheet pile wall has the functions of retaining soil and water by a linear structure, resists the overturning moment of the inner side soil water pressure around the structure bottom in the excavation process of the foundation pit by using the self weights of different sections of the structure, increases the stability and the safety coefficient of the foundation pit, and increases the compression resistance and the tensile pulling resistance of the structure by using broken line sections; the threaded push block rotates along the threaded hole to push the soil nail to be inserted into the side wall of the foundation pit along the sleeve, the extension strip is blocked by soil and is bent along the bending mark, the extension strip is bent and unfolded from the notch, the extension strip is inserted into the soil, the support rod is rotated out of the accommodating groove and is inserted into the support hole, and the extension strip is fixedly supported, so that the connection strength between the soil nail and the foundation pit is improved, and the support strength of the broken line plate pile wall is improved; the pressure of the soil of the lateral wall of foundation ditch is pushed to broken line sheet pile wall and is makeed for the middle part extrusion of broken line sheet pile wall case foundation ditch drives the slide-out in the lateral wall of soil nail atress to the foundation ditch, makes the extension strip receive blockking of soil, thereby drags broken line sheet pile wall, thereby has improved broken line sheet pile wall's support intensity.
2. The invention relates to a self-stabilizing fold line sheet pile wall structure, which is characterized in that a sealing thin sheet, an inclined cone, a rubber ring sheet and an elastic ring are arranged; when the conducting bar slides along the guide groove, the oblique cone is driven to slide through the sealing thin sheet to puncture the sealing thin sheet, the rubber ring sheet contracts 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 the friction force of the soil nail inserted into the side wall of the foundation pit is further reduced.
Drawings
The invention will be further explained with reference to the 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 an enlarged view of a portion of FIG. 3 at D;
FIG. 6 is an enlarged view of a portion E of FIG. 3;
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 nailing; 4. a sleeve; 5. a threaded hole; 6. a screw thread pushing block; 7. a guide groove; 8. conducting bars; 9. a drill bit; 10. an annular cavity; 11. a through hole; 12. sealing the sheet; 13. an oblique cone; 14. a rubber ring sheet; 15. annular ring; 16. an elastic ring; 17. a reinforcing bar; 18. a notch; 19. an extension bar; 20. bending marks; 21. a support hole; 22. a storage groove; 23. a support bar; 24. a sealing seat; 25. and (7) lifting lugs.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example one
As shown in fig. 1, the self-stabilizing broken-line sheet pile wall structure according to the embodiment of the invention includes a broken-line sheet pile wall 1, wherein the broken-line sheet pile wall 1 is fixed on a side wall of a foundation pit 2, the top of the broken-line sheet pile wall 1 is formed by 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 soil layer of the foundation pit 2; when the device works, a folding plate pile hole is drilled outside the excavated area of the foundation pit 2, a reinforcing steel bar frame is arranged in the hole, meanwhile, a sleeve 4 is uniformly welded on the reinforcing steel bar frame, and meanwhile, a threaded hole 5 of the sleeve 4 is sealed by a plug; pouring concrete into the broken line sheet pile hole, and excavating a foundation pit 2 after the concrete is solidified and dried to expose the broken line sheet pile wall 1; the broken line sheet pile wall 1 has the advantages that the straight line type structure soil retaining and water retaining functions are achieved, the self weights of different sections are utilized, 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 is resisted, the stability and the safety coefficient of the foundation pit 2 are increased, the compression resistance and the tensile pulling resistance of the structure are increased by utilizing the broken line section, and therefore the supporting strength of the broken line sheet pile wall 1 is improved.
The side surface of the broken line plate pile wall 1 is provided with a soil nail 3, and the soil nail 3 extends into the side wall of the foundation pit 2; bury the inside of foundation ditch 2 underground through soil nail 3 for broken line sheet pile wall 1 and 2 lateral walls of foundation ditch are even as an organic whole, have not only improved the compressive strength of broken line sheet pile wall 1, have improved the soil property stability of 2 lateral walls of foundation ditch moreover.
As shown in fig. 2 to 3, a plurality of sleeves 4 are fixedly connected inside the fold-line sheet pile wall 1, a threaded hole 5 is formed in an inner wall of one side of each sleeve 4, which is close to the middle of the foundation pit 2, a threaded push block 6 is installed in the threaded hole 5 in a threaded manner, the threaded push block 6 is rotatably 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 twists screw 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 staff of being convenient for controls the degree of depth that soil nail 3 inserted the lateral wall of foundation ditch 2.
The inner wall of one side, far away from the threaded hole 5, of the sleeve 4 is provided with a plurality of guide grooves 7, the outer wall of one side, close to the sleeve 4, of the soil nail 3 is fixedly connected with a plurality of guide strips 8, the outer walls of the guide strips 8 are in sliding fit with the inner walls of the guide grooves 7, one end, far away from the broken line sheet pile wall 1, of the soil nail 3 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 edges of the triangular blades are close to the tip end of the drill bit 9; during working, the screw thread pushing block 6 pushes the soil nail 3 to slide, and the guide strip 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; in the drill bit 9 was promoted by soil nail 3 and is inserted the lateral wall of foundation ditch 2, the triangle blade was convenient for inserting of drill bit 9, has reduced the resistance that drill bit 9 received, and simultaneously, drill bit 9 has reduced the probability that soil nail 3 was extracted from the lateral wall of foundation ditch 2, has improved broken line sheet pile wall 1's stability.
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 an inner ring of the annular cavity 10, the through holes 11 are communicated with the guide groove 7, a sealing sheet 12 is fixedly connected to the bottoms of the through holes 11, lubricating oil is filled in the annular cavity 10, a plurality of inclined cones 13 are fixedly connected to the outer sides of the ends, away from the thread push block 6, of the guide bars 8, and the tips of the inclined cones 13 are in sliding fit with the sealing sheet 12; during operation, when the guide bar 8 slides along the guide groove 7, the oblique cone 13 is driven to slide over the sealing thin sheet 12, the sealing thin sheet 12 is punctured, so that 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 the friction force of the soil nail 3 inserted into the side wall of the foundation pit 2 is further reduced.
A rubber ring sheet 14 is fixedly connected to the inner ring of the ring cavity 10, a plurality of ring holes 15 are formed in the rubber ring sheet 14, and an elastic ring 16 is arranged in each ring hole 15; during operation, the rubber ring piece 14 contracts towards the inner ring of the ring cavity 10 under the elastic force action of the elastic ring 16, 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, a plurality of reinforcing rods 17 are fixedly connected around the outer wall of the sleeve 4, and the reinforcing rods 17 are distributed in a staggered manner; during operation, the reinforcing rod 17 that sets up at the outer wall of sleeve 4 has improved the joint strength between sleeve 4 and broken line sheet pile wall 1 to the joint strength of broken line sheet pile wall 1 with 2 lateral walls of foundation ditch has been improved, the support intensity of broken line sheet pile wall 1 has been improved then.
As shown in fig. 6, the outer wall of one end of the soil nail 3 away from the broken-line sheet pile wall 1 is provided with a plurality of notches 18, one side of each notch 18 close to the broken-line sheet pile wall 1 is fixedly connected with an extension strip 19, one side of each extension strip 19 away from the corresponding notch 18 is provided with a plurality of bending marks 20, and one end of each extension strip 19 away from the corresponding broken-line sheet pile wall 1 is in an arc hook shape; during operation, when soil nail 3 inserted the lateral wall of foundation ditch 2, extension strip 19 received stopping of soil and buckling along bending mark 20 for extension strip 19 is buckled and is expanded from notch 18, makes extension strip 19 insert in the soil, when the soil property pressure of the lateral wall of foundation ditch 2 pushed to broken line sheet piling wall 1, thereby further improved the joint strength between soil nail 3 and the foundation ditch 2, further improved broken line sheet piling wall 1's support intensity then.
A plurality of supporting holes 21 are formed in the inner wall of the notch 18, a receiving groove 22 is formed in one surface, close to the notch 18, of the expansion strip 19, a supporting rod 23 is fixedly connected to one end, far away from the fold line sheet pile wall 1, of the receiving groove 22, and the end of the supporting rod 23 is in sliding fit with the supporting holes 21; when the soil nail 3 is in work, the expansion strip 19 is bent and unfolded from the notch 18, the supporting rod 23 is rotated out from the accommodating groove 22, the supporting rod 23 is inserted into the supporting hole 21, and the expansion strip 19 is fixedly supported, so that the supporting strength of the expansion strip 19 is further improved, and the ground grabbing strength of the soil nail 3 is further improved; the pressure of the soil of the lateral wall of foundation ditch 2 is pushed to broken line sheet pile wall 1 and is makeed for the middle part extrusion of 1 case foundation ditch 2 of broken line sheet pile wall drives 3 atress roll-offs in to the lateral wall of foundation ditch 2, makes extension strip 19 receive blockking of soil, thereby drags broken line sheet pile wall 1, thereby has improved broken line sheet pile wall 1's support intensity.
Example two
As shown in fig. 7, a first comparative example, in which another embodiment of the present invention is: 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; the sealing seat 24 is arranged, so that the probability that cement enters the sleeve 4 when the foundation pit 2 is built is avoided; after the construction is accomplished, through seal receptacle 24, avoid external rainwater and dust to get into the inside of sleeve 4, simultaneously, the lug 25 of setting, the staff of being convenient for installs the down tube support according to the demand afterwards.
When in work: during construction, a folding plate pile hole is drilled outside the excavated area of the foundation pit 2, a reinforcing steel bar frame is installed in the hole, meanwhile, a sleeve 4 is uniformly welded on the reinforcing steel bar frame, and meanwhile, a threaded hole 5 of the sleeve 4 is sealed by using a plug; pouring concrete into the broken line sheet pile hole, and excavating a foundation pit 2 after the concrete is solidified and dried to expose the broken line sheet pile wall 1; the broken line sheet pile wall 1 has the functions of retaining soil and retaining water by a linear structure, resists the overturning moment of the inner side soil water pressure around the structure bottom in the excavation process of the foundation pit 2 by using the self weights of different sections of the structure, increases the stability and the safety coefficient of the foundation pit 2, and increases the compression resistance and the tensile pulling resistance of the structure by using broken line sections;
the plug in the threaded hole 5 is taken down, a worker twists a thread push block 6 through an electric wrench to rotate along the threaded hole 5, the soil nail 3 is pushed to drive a guide strip 8 to slide along a guide groove 7, a tapered cone 13 is driven to slide across a sealing thin sheet 12, the sealing thin sheet 12 is punctured, so that lubricating oil in an annular cavity 10 flows into the guide groove 7 from a through hole 11, the surface of the soil nail 3 is lubricated, a rubber ring 14 contracts towards the inner ring of the annular cavity 10 under the action of the elastic force of an elastic ring 16, the lubricating oil in the annular cavity 10 is pressed into the through hole 11, the output efficiency of the lubricating oil is improved, the smoothness of the soil nail 3 in sliding is improved, the soil nail 3 is pushed to be inserted into the side wall of the foundation pit 2, when the soil nail 3 is inserted into the side wall of the foundation pit 2, an expansion strip 19 is blocked by soil and bent along a bending mark 20, the expansion strip 19 is bent and unfolded from a notch 18, and the expansion strip 19 is inserted into the soil, make bracing piece 23 from accomodating the interior roll-out of groove 22, make bracing piece 23 insert in the supported hole 21, 19 fixed stay will expand, the pressure of the soil of the lateral wall of foundation ditch 2 is pushed to broken line sheet pile wall 1 and is made, make 1 case of broken line sheet pile wall 2's middle part extrusion, drive 3 atress of soil nail roll-off in to the lateral wall of foundation ditch 2, make expansion strip 19 receive blockking of soil, thereby pull broken line sheet pile wall 1, thereby the support intensity of broken line sheet pile wall 1 has been improved.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a self-stabilizing broken line sheet pile wall structure which characterized in that: including broken line sheet pile wall (1), broken line sheet pile wall (1) is fixed on the lateral wall of foundation ditch (2), the top of broken line sheet pile wall (1) constitutes for the sheet pile wall of a plurality of slopes, the bottom of broken line sheet pile wall (1) is vertical sheet pile wall, the diapire soil layer below at foundation ditch (2) is fixed to the bottom of broken line sheet pile wall (1).
2. The self-stabilizing broken line sheet pile wall structure according to claim 1, characterized in that: the side of broken line sheet piling wall (1) is provided with soil nail (3), soil nail (3) stretch into inside the lateral wall of foundation ditch (2).
3. The self-stabilizing broken line sheet pile wall structure according to claim 2, characterized in that: the inside rigid coupling of broken line sheet pile wall (1) has a plurality of sleeves (4), sleeve (4) are close to one side inner wall set up threaded hole (5) at foundation ditch (2) middle part, the internal thread installation screw thread ejector pad (6) of 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 in screw thread ejector pad (6).
4. The self-stabilizing fold line sheet pile wall structure according to claim 3, characterized in that: sleeve (4) keep away from one side inner wall of screw hole (5) and set up a plurality of guide slots (7), one side outer wall rigid coupling that soil nail (3) are close to sleeve (4) has a plurality of conducting bars (8), the outer wall of conducting bar (8) and the inner wall sliding fit of guide slot (7), the one end rigid coupling that broken line sheet piling wall (1) was kept away from in soil nail (3) has drill bit (9), the outer lane of drill bit (9) is provided with a plurality of triangle blades, the edge of a knife of triangle blade is close to the most advanced of drill bit (9).
5. The self-stabilizing broken line sheet pile wall structure according to claim 4, characterized in that: the middle part of sleeve (4) has been seted up ring chamber (10), a plurality of through-holes (11) have been seted up to the inner circle of ring chamber (10), through-hole (11) intercommunication guide slot (7), the bottom rigid coupling of through-hole (11) has sealed thin slice (12), lubricating oil has been irritated to the inside of ring chamber (10), the one end outside rigid coupling that screw ejector pad (6) was kept away from in conducting bar (8) has a plurality of oblique cones (13), the most advanced and sealed thin slice (12) sliding fit of oblique cone (13).
6. The self-stabilizing broken line sheet pile wall structure according to claim 5, characterized in that: the inner ring of the ring cavity (10) is fixedly connected with a rubber ring piece (14), a plurality of ring holes (15) are formed in the rubber ring piece (14), and an elastic ring (16) is arranged in each ring hole (15).
7. The self-stabilizing broken line sheet pile wall structure according to claim 3, characterized in that: the outer wall of sleeve (4) encircles the rigid coupling and has a plurality of stiffeners (17), and is a plurality of stiffener (17) crisscross distribution.
8. The self-stabilizing broken line sheet pile wall structure according to claim 3, characterized in that: soil nail (3) keep away from the one end outer wall of broken line sheet pile wall (1) and seted up a plurality of notches (18), one side rigid coupling that notch (18) are close to broken line sheet pile wall (1) has extension strip (19), a plurality of bending marks (20) have been seted up to the one side that notch (18) were kept away from in extension strip (19), the one end that broken line sheet pile wall (1) was kept away from in extension strip (19) is that the arc is hook-like.
9. The self-stabilizing broken line sheet pile wall structure according to claim 8, characterized in that: a plurality of supported holes (21) have been seted up to the inner wall of notch (18), the one side that extension strip (19) are close to notch (18) has been seted up and has been accomodate groove (22), it has bracing piece (23) to accomodate the one end rigid coupling that broken line sheet pile wall (1) was kept away from in groove (22), the end and supported hole (21) sliding fit of bracing piece (23).
10. The self-stabilizing broken line sheet pile wall structure according to claim 3, characterized in that: 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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| CN202210214870.3A CN114687352B (en) | 2022-03-07 | 2022-03-07 | Self-stabilizing type broken line sheet pile wall structure |
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| CN114687352B (en) | 2024-03-26 |
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