Rapid reinforcing structure for collapse of peripheral slope of foundation pit
By utilizing existing structures such as retaining piles and capping beams on the foundation pit slope, combined with steel pipes and non-woven fabric materials, a closed system was formed for underwater concrete backfilling, solving the reinforcement problem after the failure of the water-stop curtain on the foundation pit slope and achieving a fast and safe reinforcement effect.
Patent Information
- Application Number
- CN202423166138.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Under extreme weather conditions, the failure of the cutoff wall on the slope of the foundation pit can lead to collapse. Conventional construction methods pose safety hazards in small and complex sites and are difficult to reinforce quickly and effectively.
By using support components and enclosure components, utilizing the original structures such as slope protection piles and capping beams, and combining them with steel pipes and non-woven fabric materials, a closed system is formed. Underwater concrete backfilling and plain soil backfilling are then carried out to restore the support function.
It enables rapid and safe reinforcement of foundation pit slopes, reduces construction costs, eliminates safety hazards, and restores site functionality.
Smart Images
Figure CN223577124U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of foundation pit side slope reinforcement, especially relates to a quick reinforcement structure for peripheral side slope collapse of foundation pit. BACKGROUND
[0002] With the increasing extreme weather, the harmfulness of the foundation pit side slope is enhanced, and some long-time foundation pit curtain water stop supporting structures will fail in water stop function, and the foundation pit will be flooded. After a long-term immersion, the foundation pit is prone to local collapse of the side slope after a rainstorm, and needs to be repaired in time, otherwise the collapse will be further expanded, causing greater harm. The conventional construction scheme needs to support the formwork and then pour concrete, but the side slope collapse site is relatively complex, and due to the failure of the water curtain, there is often water in the foundation pit, and there is a great safety hazard in the site, and the space is narrow or irregular, so the conventional operation conditions are not met, and therefore a simpler and safer design scheme is needed. UTILITY MODEL CONTENTS
[0003] The utility model provides a kind of quick reinforcement structure for peripheral side slope collapse of foundation pit, to solve the technical problems such as the convenient closure disposal, emergency backfilling processing and the repair of reinforcing side slope after the water stop curtain of the periphery of foundation pit fails.
[0004] To achieve the above object, the utility model adopts the following technical scheme:
[0005] A kind of quick reinforcement structure for peripheral side slope collapse of foundation pit, including foundation pit, the slope protection pile being arranged at one side of foundation pit, the corona beam being connected to the top of slope protection pile, the collapse area being present on the outside of foundation pit supporting pile, the support assembly being arranged in the collapse area near supporting pile side, the contact component being connected between support assembly and corona beam, the fence component being arranged in support assembly and the backfill layer being arranged between support assembly and collapse area;
[0006] The support assembly is arranged in the form of a pipe and divided into the first row of support pipes and the second row of support pipes, which are arranged in two rows inside and outside.
[0007] The fence component includes two parallel and vertically arranged fence edge rods and a main fence connected between the two fence edge rods. The fence edge rod is arranged near the collapse area and close to the first row of support pipes, and the second row of support pipes is arranged on the outside of the main fence.
[0008] Further, the contact component includes a vertically arranged hanging rod, a carrying rod connected vertically to the top of the hanging rod, a hanging adapter detachably connected between the hanging rod and the carrying rod, a clamping rod arranged horizontally upward and perpendicular to the carrying rod, and a carrying adapter detachably connected between the clamping rod and the carrying rod.
[0009] Further, the hanging rod is arranged on the side of the crown beam close to the foundation pit, the carrying rod is arranged on the top of the crown beam and penetrates the first row of support pipes and the second row of support pipes, the clamping rod is clamped on the side of the second row of support pipes close to the collapse area, and the clamping rod is arranged along the length direction of the second row of support pipes, and the carrying rod and the hanging rod are arranged in the length direction of the second row of support pipes.
[0010] Further, the first row of support pipes and the second row of support pipes are punched into the soil at the bottom of the collapse area with a depth of not less than 1500mm, the first row of support pipes and the second row of support pipes are arranged continuously along the inner side of the crown beam and cover the collapse area, and the upper portions of the first row of support pipes and the second row of support pipes are higher than the top of the beam by not less than 200mm.
[0011] Further, the first row of support pipes and the second row of support pipes are both made of steel pipes, the strength of the steel pipes is greater than the resistance to lateral concrete pressure during concrete pouring and after stabilization, and gaps are arranged at the positions of the anchor rods when the first row of support pipes and the second row of support pipes are punched and installed.
[0012] Further, the main enclosure is made of non-woven fabric, the two ends of the main enclosure are wrapped around the enclosure side rods and fixed by iron wire binding, and the single width of the main enclosure or the butt joint width of the multiple enclosure assemblies corresponds to the length of the collapse area.
[0013] Further, the height of the main enclosure is adapted to the height of the collapse area, the main enclosure is vertically overlapped, and the overlap is not less than 10mm and is densely bound.
[0014] Further, notches are arranged at the positions of the anchor rods at the main enclosure, or the butt joint positions of the multiple enclosure assemblies are arranged at the positions of the anchor rods.
[0015] Further, the lower backfill layer is a concrete layer, and the top of the lower backfill layer is higher than the water level of underground water and the anchor device on the support pile at the top of the anchor rod.
[0016] Further, the upper backfill layer is a soil backfill layer, and the part of the upper backfill layer beyond the top of the crown beam is arranged as a slope; a top surface layer is arranged at the top of the upper backfill layer, and the top surface layer is a cast-in-place concrete hardened surface layer.
[0017] The beneficial effects of the utility model are embodied in:
[0018] 1) The utility model discloses a support assembly and an enclosure assembly, wherein the materials such as steel pipes and non-woven fabrics are low in cost and easy to obtain, and are convenient for emergency construction; and the support assembly and the enclosure assembly can further play the role of a formwork and facilitate subsequent collapse area backfilling.
[0019] 2) The utility model makes full use of effective components such as slope protection piles in the original maintenance structure as fulcrums, simplifies the construction process and reduces the construction cost.
[0020] 3) The utility model discloses through underwater filling concrete, completely wrapping exposed anchor rod in collapse area, restoring partial pile anchor stress system, increasing the reliability of original supporting function. Through the construction of plain soil backfill and surface layer structure, restore the original function of the site, eliminate the site safety hazard.
[0021] The utility model discloses greatly utilize original effective structure, form closed system, satisfy the pouring condition of concrete, fill the partial collapse position, restore the integrity of the site, ensure the safety of subsequent use. Other features and advantages of the utility model will be described in the subsequent specification, and part becomes obvious from the specification, or understand by implementing the utility model;The main purpose and other advantages of the utility model can be realized and obtained through the scheme specially pointed out in the specification. BRIEF DESCRIPTION OF DRAWINGS
[0022] Fig. 1 It is the side view of the quick reinforcement structure for the collapse of the peripheral slope of the foundation pit.
[0023] Fig. 2 It is the plan view of the quick reinforcement structure for the collapse of the peripheral slope of the foundation pit.
[0024] Fig. 3 It is the schematic view of the enclosing assembly structure.
[0025] Fig. 4 It is the schematic view of the reinforced structure after backfilling.
[0026] The figure mark: 1 - foundation pit, 2 - base, 3 - water level line, 4 - revetment pile, 5 - crown beam, 6 - anchor rod, 7 - landslide slope, 8 - collapse area, 9 - contact assembly, 91 - hanging rod, 92 - hanging adapter, 93 - bearing rod, 94 - bearing adapter, 95 - clamping rod, 10 - support assembly, 101 - first row of support pipes, 102 - second row of support pipes, 11 - enclosing assembly, 111 - enclosing edge rod, 112 - main enclosure, 12 - backfill interface, 13 - slope top, 14 - top surface layer, 15 - lower backfill layer, 16 - upper backfill layer. DETAILED DESCRIPTION
[0027] Taking a new city project as an example, the existing foundation pit one side water stop curtain falls off and forms landslide slope 7 and collapse area 8, causes anchor rod 6 and support pile to be exposed, and the first pre-stressed anchor rod is exposed 3 roots, wherein the anchoring section length is about 0.5 meters or so, and clear water seeps out at the bottom of the collapse position. Underground confined water surges and flows into the inside of foundation pit 1, and water level line 3 exceeds the elevation of base 2;In order to handle the collapse of foundation pit 1 in time, the quick reinforcement structure for the collapse of the peripheral slope of the foundation pit is used for repair construction.
[0028] As Figs. 1 to 4As shown, the peripheral slope collapse rapid reinforcement structure of foundation pit is characterized in that it comprises a foundation pit 1, a slope protection pile 4 arranged on one side of the foundation pit 1, a crown beam 5 connected to the top of the slope protection pile 4, a collapse area 8 existing outside the supporting pile of the foundation pit 1, a support assembly 10 arranged in the collapse area 8 near one side of the supporting pile, a connecting assembly 9 connected between the support assembly 10 and the crown beam 5, a fence assembly 11 arranged in the support assembly 10, and a backfill layer arranged between the support assembly 10 and the collapse area 8.
[0029] The support assembly 10 is arranged in a row of pipes and divided into a first row of support pipes 101 and a second row of support pipes 102.
[0030] The fence assembly 11 comprises two parallel and vertically arranged fence edge rods 111 and a main fence 112 connected between the two fence edge rods 111; the fence edge rod 111 is arranged near the collapse area 8 and close to the first row of support pipes 101, and the second row of support pipes 102 is arranged outside the main fence 112.
[0031] In this embodiment, the connecting assembly 9 comprises a vertically arranged hanging rod 91, a carrying rod 93 vertically connected to the top of the hanging rod 91, a hanging adapter 92 detachably connected between the hanging rod 91 and the carrying rod 93, a clamping rod 95 arranged vertically upward and perpendicular to the carrying rod 93, and a carrying adapter 94 detachably connected between the clamping rod 95 and the carrying rod 93. The hanging rod 91, the carrying rod 93 and the clamping rod 95 are all made of steel pipes, and the hanging adapter 92 and the carrying adapter 94 are both hoop fasteners.
[0032] In this embodiment, the hanging rod 91 is arranged on one side of the crown beam 5 near the foundation pit 1, the carrying rod 93 is arranged on the top of the crown beam 5 and penetrates through the first row of support pipes 101 and the second row of support pipes 102; the clamping rod 95 is clamped on one side of the second row of support pipes 102 near the collapse area 8; the clamping rod 95 is arranged longitudinally along the second row of support pipes 102, and the carrying rod 93 and the hanging rod 91 are arranged longitudinally spaced apart from each other.
[0033] The first row of support pipes 101 and the second row of support pipes 102 are driven into the soil at the bottom of the collapse area 8 to a depth of not less than 1500mm, the first row of support pipes 101 and the second row of support pipes 102 are arranged continuously along the inner side of the crown beam 5 and cover the collapse area 8, and the upper part of the first row of support pipes 101 and the second row of support pipes 102 is higher than the top elevation of the beam by not less than 200mm.
[0034] In addition, the steel pipe has a strength greater than the lateral concrete pressure when pouring and after stabilizing; a gap is provided at the position of the anchor rod 6 when the first row of support pipes 101 and the second row of support pipes 102 are installed.
[0035] In the embodiment, the enclosure assembly 11 comprises two parallel and vertically arranged enclosure side bars 111 and a main enclosure 112 connected between the two enclosure side bars 111; the enclosure side bar 111 is arranged close to the collapse area 8 and close to the first row of support pipes 101, and the main enclosure 112 is arranged outside the second row of support pipes 102.
[0036] In the embodiment, the main enclosure 112 is made of non-woven fabric, and the two ends are wrapped around the enclosure side bar 111 and fixed by wire binding; when the single width of the main enclosure 112 is less than the length of the collapse area 8, the multiple enclosure assemblies 11 are arranged in abutment; in the height direction, the height of the main enclosure 112 is less than the height of the collapse area 8, and the height setting requirement is met by vertical lapping, and the lapping is not less than 10 mm and is densely bound.
[0037] When the lower enclosure assembly 11 is inclined downward, the lower enclosure assembly 11 is returned to normal after being bottomed to the specified position, thereby facilitating the passing out of the anchor rod 6; or a notch is provided in the main enclosure 112 according to the position of the anchor rod 6 in advance; or the abutment of the multiple enclosure assemblies 11 is arranged at the position of the anchor rod 6.
[0038] The method of underwater pouring concrete is adopted to slowly pour concrete to form the lower backfill layer 15 by layering pouring method, the top surface elevation of the lower backfill layer 15 exceeds the water surface elevation and is higher than the anchor device elevation of the anchor rod 6 at the support pile; the upper part of the lower backfill layer 15 is backfilled with plain soil and is filled and compacted to form the upper backfill layer 16; the top surface layer 14 is arranged on the slope top 13 to restore the original hardened site function, thereby completing the reinforcement of the slope collapse of the waterproof curtain failure of the foundation pit 1.
[0039] The above only describes the preferred specific embodiments of the present application, but the protection scope of the present application is not limited to this, any changes or substitutions thought by those skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application.
Claims
1. A structure for rapidly reinforcing a collapse of an outer peripheral slope of a foundation pit, characterized by, The application relates to a foundation pit support structure, which comprises a foundation pit (1), slope protection piles (4) arranged on one side of the foundation pit (1), a crown beam (5) connected to the top of the slope protection piles (4), a collapse area (8) existing outside the support piles of the foundation pit (1), a support assembly (10) arranged in the collapse area (8) and close to one side of the support piles, a connecting assembly (9) connected between the support assembly (10) and the crown beam (5), a fence assembly (11) arranged in the support assembly (10), and a backfill layer arranged between the support assembly (10) and the collapse area (8). The support assembly (10) is arranged in a pipe type and comprises a first row of support pipes (101) and a second row of support pipes (102) arranged in two rows. The fence assembly (11) comprises two parallel and vertically arranged fence edge poles (111) and a main fence (112) connected between the two fence edge poles (111); the fence edge poles (111) are arranged close to the collapse area (8) and close to the first row of support pipes (101), and the second row of support pipes (102) is arranged outside the main fence (112).
2. The structure for rapidly reinforcing a collapse of an outer peripheral slope of an excavation according to Claim 1, wherein The connecting assembly (9) comprises a hanging pole (91) arranged vertically, a bearing pole (93) vertically connected to the top of the hanging pole (91), a hanging adapter (92) detachably connected between the hanging pole (91) and the bearing pole (93), a clamping pole (95) arranged vertically and upward and perpendicular to the bearing pole (93), and a bearing adapter (94) detachably connected between the clamping pole (95) and the bearing pole (93).
3. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 2, wherein The hanging pole (91) is arranged on one side of the crown beam (5) close to the foundation pit (1), the bearing pole (93) is arranged on the top of the crown beam (5) and penetrates through the first row of support pipes (101) and the second row of support pipes (102); the clamping pole (95) is clamped on one side of the second row of support pipes (102) close to the collapse area (8); the clamping pole (95) is arranged along the length direction of the second row of support pipes (102), and the bearing pole (93) and the hanging pole (91) are arranged at intervals along the length direction of the second row of support pipes (102).
4. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 1, wherein The first row of support pipes (101) and the second row of support pipes (102) are driven into the soil at the bottom of the collapse area (8) to a depth of not less than 1500 mm, the first row of support pipes (101) and the second row of support pipes (102) are continuously arranged along the inner side of the crown beam (5) and cover the collapse area (8), and the upper portions of the first row of support pipes (101) and the second row of support pipes (102) are higher than the top of the beam by not less than 200 mm.
5. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 4, wherein The first row of support pipes (101) and the second row of support pipes (102) are both made of steel pipes, the strength of the steel pipes is greater than the resistance to lateral concrete pressure during concrete pouring and after stabilization, and gaps are arranged at the positions of anchor rods (6) during installation of the first row of support pipes (101) and the second row of support pipes (102).
6. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 1, wherein The main fence (112) is made of non-woven fabric, the two ends of the main fence (112) are wrapped around the fence edge poles (111) and fixed through iron wire binding, and the single-width of the main fence (112) or the width of the abutted multiple fence assemblies (11) is less than the length of the collapse area (8).
7. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 6, wherein The height of the main fence (112) is adapted to the height of the collapse area (8), the main fence (112) is arranged in a vertical lap joint mode, and the lap joint portion is not less than 10 mm and is densely bound.
8. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 7, wherein The notches are arranged at the main surrounding fences (112) corresponding to the positions of the anchor rods (6); or the butt joint positions of the multiple surrounding fence components (11) are arranged at the positions of the anchor rods (6).
9. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 1, wherein The lower backfill layer (15) is a concrete layer, and the top elevation of the lower backfill layer (15) is higher than the water level line (3) of underground water and the elevation of the upper anchor of the support pile at the position of the top anchor rod (6).
10. The structure for rapidly reinforcing collapse of an outer peripheral slope of a foundation pit according to Claim 1, wherein The upper backfill layer (16) is a soil backfill layer, and the part of the upper backfill layer (16) exceeding the top of the corbel (5) is arranged as a slope; the top of the upper backfill layer (16) is provided with a top surface layer (14), and the top surface layer (14) is a cast-in-place concrete hardened surface layer.