CN220666243U - Soft soil foundation pit is with strutting arrangement - Google Patents
Soft soil foundation pit is with strutting arrangement Download PDFInfo
- Publication number
- CN220666243U CN220666243U CN202322181971.8U CN202322181971U CN220666243U CN 220666243 U CN220666243 U CN 220666243U CN 202322181971 U CN202322181971 U CN 202322181971U CN 220666243 U CN220666243 U CN 220666243U
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- supporting
- foundation pit
- foundation
- guard plate
- steel sheets
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- 239000002689 soil Substances 0.000 title claims abstract description 48
- 239000004744 fabric Substances 0.000 claims abstract description 57
- 239000002023 wood Substances 0.000 claims abstract description 21
- 239000003351 stiffener Substances 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000006748 scratching Methods 0.000 claims description 3
- 230000002393 scratching effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 abstract description 2
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- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- -1 so that on one hand Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Foundations (AREA)
Abstract
The utility model discloses a supporting device for a foundation pit of a soft soil foundation, which comprises the following components: support to the inner wall for the guard plate in the foundation ditch that the slope set up, lay in the pre-buried screen cloth of foundation ditch slope face, backfill the reinforcement soil body between pre-buried screen cloth and the guard plate, one side that pre-buried screen cloth kept away from the guard plate is fixed with the screens wood piece, the guard plate outer wall is provided with and supports the keel frame, it inserts the foundation ditch bottom to support keel frame lower extreme, provides horizontal holding power for the guard plate, the guard plate rotates and is connected with a stiffener, stiffener one end and screens wood piece threaded connection, the stiffener other end is provided with rotation portion butt to the outside that supports keel frame. According to the supporting device, the supporting stability of the protective plate is further improved through the supporting keel frame by improving the anchoring effect of the reinforcing rods, and the supporting stability of the supporting device on the soft soil foundation can be ensured through the multiple supporting reinforcing structures.
Description
Technical Field
The utility model belongs to the technical field of foundation pit support, and particularly relates to a support device for a soft soil foundation pit.
Background
The house building foundation supporting device is used for ensuring the safety of underground structure construction and the surrounding environment of a foundation pit, and has the functions of supporting, reinforcing and protecting the side wall of the foundation pit and the surrounding environment; the foundation is excavated under the conditions of soft soil, high groundwater level and other complex sites, so that the problems of soil body slippage, foundation pit instability, pile body deflection, pit bottom uplift and the like are easily generated, and the safety of surrounding buildings, underground structures and pipelines is greatly threatened; the main measure that adopts at present is that erect the guard plate by the foundation ditch lateral wall through the stake, then make the guard plate block the soil body, avoid its landing to in the foundation ditch.
The Chinese patent application with the publication number of CN101560771A provides a recyclable foundation pit bracing system, which has the technical scheme that: the support pipe pile is positioned at the periphery of the foundation pit; the tubular pile connecting and fixing device is used for connecting and fixing the enclosure tubular piles together; and the tubular pile lateral supporting device is used for laterally restraining the enclosing tubular piles which are connected and fixed together. However, the foundation pit supporting structure of the scheme is relatively simple, has poor structural stability, and is difficult to meet the foundation pit supporting requirement of a soft soil foundation, so improvement is needed.
Disclosure of Invention
The utility model provides a supporting device for a soft foundation pit, which aims to solve the problem of poor structural stability in supporting the soft foundation pit in the prior art.
In order to solve the technical problems, the supporting device for the foundation pit of the soft soil foundation provided by the utility model comprises: support to the inner wall for the guard plate in the foundation ditch that the slope set up, lay in the pre-buried screen cloth of foundation ditch slope face, backfill the reinforcement soil body between pre-buried screen cloth and the guard plate, one side that pre-buried screen cloth kept away from the guard plate is fixed with the screens wood piece, the guard plate outer wall is provided with and supports the keel frame, it inserts the foundation ditch bottom to support keel frame lower extreme, provides horizontal holding power for the guard plate, the guard plate rotates and is connected with a stiffener, stiffener one end and screens wood piece threaded connection, the stiffener other end is provided with rotation portion butt to the outside that supports keel frame.
Preferably, the supporting device further comprises a supporting bottom plate and inclined struts, wherein a plurality of pins are arranged on the supporting bottom plate and inserted into the bottom of the foundation pit, the lower end of the supporting keel frame penetrates through the supporting bottom plate and then is inserted into the bottom of the foundation pit, the lower ends of the inclined struts are in butt joint with the upper ends of the pins, and the upper ends of the inclined struts are in butt joint with the lower ends of the transverse supporting rods.
Preferably, the lower ends of the pins are all inclined downwards in a direction away from the protection plate.
Preferably, the supporting keel frame comprises a transverse supporting rod and a longitudinal supporting rod, the lower end of the longitudinal supporting rod is sharpened, the longitudinal supporting rod is attached to the side wall of the protection plate, the transverse supporting rod is attached to the outer wall of each longitudinal supporting rod, and the rotating part passes through the protection plate and the transverse supporting rod and then is abutted to the outer side of the transverse supporting rod.
Preferably, the transverse supporting rods and the longitudinal supporting rods are all C-shaped channel steel.
Preferably, a double-head screw is arranged in the clamping wood block, one end of the double-head screw is in threaded connection with the clamping wood block, and the other end of the double-head screw is in threaded connection with the reinforcing rod.
Preferably, the embedded mesh cloth adopts waterproof cloth, the through hole for the double-end screw rod to pass is offered to the embedded mesh cloth, waterproof surface cloth has been laid to reinforcement soil body top surface, and waterproof surface cloth's one side is connected with the embedded mesh cloth, and the another side is connected with the guard plate.
Preferably, a plurality of pairs of steel sheets are clamped on two sides of the embedded mesh, each pair of steel sheets is uniformly arranged along the length direction of the foundation pit, a blade for scratching the embedded mesh is arranged at the lower end of each pair of steel sheets, and the blade is fixed at the lower end of each pair of steel sheets and the knife edge faces the upper end of the steel sheets.
Preferably, a plurality of groups of limiting ropes are sewn at positions corresponding to the steel sheets on the embedded mesh cloth, and the limiting ropes are uniformly distributed in the length direction of the steel sheets to form sliding tracks of the steel sheets.
Compared with the prior art, the utility model has the following technical effects:
1. according to the support device, the embedded mesh cloth is paved on the side wall of the foundation pit and then backfilled between the reinforced soil body and the protection plate, one end of the embedded mesh cloth is connected with the protection plate through the connection function of the reinforcing rod, and the other end of the embedded mesh cloth is connected with the clamping wood block on the inner side of the embedded mesh cloth, so that on one hand, water penetration into the reinforced soil body is reduced, on the other hand, the anchoring function of the reinforcing rod can be further improved through the combination of the pressing function of the clamping wood block and the pressure application function of the reinforced soil body, and meanwhile, the support stability of the protection plate can be further improved through the support keel frame on the outer side of the protection plate, and therefore, the support stability of the support device on a soft soil foundation can be ensured through the multiple support reinforcing structures.
2. According to the supporting device, the steel sheets, the blades and the limiting ropes are matched, so that the pre-buried mesh cloth can be split conveniently, the split pre-buried mesh cloth can be conveniently subjected to subsequent procedures, for example, when vegetation coverage, construction roads or other related projects are carried out on a side slope, the pre-buried mesh cloth is not needed any more, and the difficulty and cost of the subsequent projects can be reduced by removing the pre-buried mesh cloth.
3. According to the supporting device, the waterproof mesh cloth on the upper side of the reinforced soil body and the embedded mesh cloth are arranged in a waterproof cloth mode, so that water is reduced to enter the reinforced soil body, the soil softening of the reinforced soil body is avoided, and the reduction of the overall stability of the side slope caused by the loss of the original strength and stability of the softened reinforced soil body is further avoided; the softened reinforced soil body is also avoided, so that the foundation pit slope protection structure such as a wall body and anchor rods can be damaged, and the protection structure can not effectively support the slope, so that the problem of slope stability is aggravated.
Drawings
FIG. 1 is a diagram of the mounting structure of a support device according to an embodiment of the present application;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
fig. 3 is a schematic illustration of tiling of pre-buried mesh according to an embodiment of the present application.
Reference numerals: 1. a foundation pit; 2. a protection plate; 3. embedding mesh cloth; 4. reinforcing soil; 5. a clamping wood block; 6. a reinforcing rod; 7. a supporting keel frame; 71. a transverse support bar; 72. a longitudinal support bar; 8. supporting the bottom plate; 9. pins; 10. a double-ended screw; 11. waterproof cloth; 12. a steel sheet; 13. a blade; 14. a limit rope; 15. diagonal bracing; 16. and a rotating part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the specific embodiments of the present application and with reference to the accompanying drawings.
Referring to fig. 1 to 3, the present embodiment provides a supporting device for a foundation pit of a soft soil foundation, including: support to the inner wall for the guard plate 2 in the foundation ditch 1 of slope setting, shop in the pre-buried screen cloth 3 of foundation ditch 1 slope face, backfill between pre-buried screen cloth 3 and the guard plate 2 and consolidate soil body 4, one side that guard plate 2 was kept away from to pre-buried screen cloth 3 is fixed with screens wood block 5, guard plate 2 outer wall is provided with supports keel frame 7, and the outer wall of here guard plate 2 is kept away from a lateral wall that consolidates soil body 4 for guard plate 2, support keel frame 7 lower extreme inserts foundation ditch 1 bottom, provides horizontal holding power for guard plate 2, guard plate 2 rotates and is connected with a stiffener 6, stiffener 6 one end and screens wood block 5 threaded connection, the stiffener 6 other end is provided with rotation portion 16 butt to support keel frame 7's outside, supports keel frame 7 one side of keeping away from guard plate 2 promptly.
Through set up behind the foundation ditch 1 lateral wall lay pre-buried screen cloth 3 backfill consolidate soil body 4 to guard plate 2, be connected with guard plate 2 through the junction action one end of stiffener 6, one end is connected with the inboard screens wood block 5 of pre-buried screen cloth 3, pre-buried screen cloth 3 reduces the infiltration of water to consolidate soil body 4 on the one hand, on the one hand can combine the anchor effect that can further improve stiffener 6 with the pressure effect of consolidating soil body 4 with screens wood block 5, the supporting keel frame 7 in the guard plate 2 outside can further improve the supporting stability of guard plate 2 simultaneously, so, through multiple supporting reinforced structure, can ensure the supporting stability of strutting arrangement at soft soil foundation.
In other embodiments of the present utility model, the supporting device further includes a supporting base plate 8 and a diagonal brace 15, the supporting base plate 8 is provided with a plurality of pins 9 inserted into the bottom of the foundation pit 1 for fixing the protecting plate 8 from sliding towards the inner side of the foundation pit, the lower end of the supporting keel frame 7 passes through the supporting base plate 8 and then is inserted into the bottom of the foundation pit 1, the lower end of the diagonal brace 15 is abutted with the upper ends of the pins 9, and the upper end of the diagonal brace 15 is abutted with the lower end of the transverse supporting rod 71. The diagonal braces 15, the longitudinal support bars 72 and the bottom plate 8 form a stable triangular structure, and provide a larger transverse support force for the protection plate 2, so that the protection plate 2 is more stable. Still further, the lower ends of the pins 9 are all inclined downwards towards the direction away from the protection plate 2, so that the protection plate 8 can be better fixed to avoid sliding towards the inner side of the foundation pit.
Specifically, the supporting keel frame 7 includes a transverse supporting rod 71 and a longitudinal supporting rod 72, the lower end of the longitudinal supporting rod 72 is pointed, the longitudinal supporting rod 72 is attached to the side wall of the protection plate 2, the transverse supporting rod 71 is attached to the outer wall of each longitudinal supporting rod 72, and the rotating part 16 passes through the protection plate 2 and the transverse supporting rod 71 and then abuts against the outer side of the transverse supporting rod 71.
The transverse supporting rods 71 and the longitudinal supporting rods 72 are all C-shaped channel steel, the C-shaped channel steel is beneficial to improving the bending strength of the transverse supporting rods 71 and the longitudinal supporting rods 72, the protection plates 2 are better supported, and the stability of foundation pit support is improved.
Specifically, the connection mode between the clamping wood block 5 and the reinforcing rod 6 is as follows: the clamping wooden block 5 is internally provided with a double-headed screw rod 10, one end of the double-headed screw rod 10 is in threaded connection with the clamping wooden block 5, and the other end of the double-headed screw rod is in threaded connection with the reinforcing rod 6.
The waterproof cloth is adopted by the embedded mesh cloth 3, through holes for the double-headed screws 10 to pass through are formed in the embedded mesh cloth 3, waterproof cloth 11 is paved on the top surface of the reinforced soil body 4, one side of the waterproof cloth 11 is connected with the embedded mesh cloth 3, and the other side of the waterproof cloth is connected with the protection plate 2. By arranging the waterproof mesh cloth on the upper side of the reinforced soil body and adopting the waterproof cloth mode for the embedded mesh cloth, water is reduced to enter the reinforced soil body, the soil softening of the reinforced soil body is avoided, and the reduction of the overall stability of the side slope caused by the loss of the original strength and stability of the softened reinforced soil body is further avoided; the softened reinforced soil body is also avoided, so that the foundation pit slope protection structure such as a wall body and anchor rods can be damaged, and the protection structure can not effectively support the slope, so that the problem of slope stability is aggravated.
In order to facilitate splitting the embedded mesh 3, the following structure is arranged to split the embedded mesh: the embedded net cloth is characterized in that a plurality of pairs of steel sheets 12 are clamped on two sides of the embedded net cloth 3, each pair of steel sheets 12 are uniformly arranged along the length direction of the foundation pit 1, a blade 13 for scratching the embedded net cloth 3 is arranged at the lower end of each pair of steel sheets 12, the blade 13 is fixed at the lower end of each pair of steel sheets 12, the knife edge faces the upper end of the steel sheet 12, and the cutting track of the blade 13 passes through a through hole formed in the embedded net cloth 3. The splitting pre-buried mesh 3 can facilitate the subsequent procedures, for example, when vegetation coverage, construction roads or other related projects are carried out on the side slope, the pre-buried mesh 3 is not needed any more, and the difficulty and cost of the subsequent projects can be reduced by removing the split pre-buried mesh 3.
A plurality of groups of limiting ropes 14 are sewn at positions corresponding to the steel sheets 12 on the embedded mesh 3, and the limiting ropes 14 are uniformly distributed in the length direction of the steel sheets 12 to form sliding tracks of the steel sheets 12.
The implementation principle of the embodiment of the application is as follows:
during installation, firstly cleaning and forming the inner wall of the foundation pit 1, fixing the clamping wood blocks 5 at a designated position, paving the pre-buried mesh 3 and the steel sheet 12 with the blades 13 on a foundation pit slope, inserting each longitudinal support rod 72 to the designated position, supporting the protection plate 2, fixing the transverse support rods 71 to the designated position, connecting and locking each reinforcing rod 6 with the clamping wood blocks 5 after passing through the transverse support rods 71 and the protection plate 2, fixing each pin 9 in the fixed support bottom plate 8, then backfilling the reinforced soil body 4, and finally covering the waterproof mesh.
When the embedded mesh 3 is disassembled, each group of steel sheets 12 is pulled away, the blades 13 arranged at the lower ends of the steel sheets 12 are pulled out along with the steel sheets 12, and in the pulling-out process, the blades 13 scratch the embedded mesh 3 from bottom to top to split the embedded mesh 3; then through rotating stiffener 6, with stiffener 6 and screens wood piece 5 separation, and then take out from strengthening soil body 4 and guard plate 2, dismantle stiffener 6, then demolish horizontal bracing piece 71, vertical bracing piece 72 and guard plate 2, will participate in 9, support the dismantlement of bottom plate 8 at last.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.
Claims (9)
1. The utility model provides a weak soil foundation pit is with strutting arrangement which characterized in that includes: support guard plate (2) in foundation ditch (1) that the inner wall set up for the slope, lay in pre-buried screen cloth (3) on foundation ditch (1) slope face, backfill between pre-buried screen cloth (3) and guard plate (2) and consolidate soil body (4), one side that guard plate (2) was kept away from to pre-buried screen cloth (3) is fixed with screens wood piece (5), guard plate (2) outer wall is provided with supports keel frame (7), support keel frame (7) lower extreme inserts foundation ditch (1) bottom, provides horizontal holding power for guard plate (2), guard plate (2) rotate and are connected with a stiffener (6), stiffener (6) one end and screens wood piece (5) threaded connection, the stiffener (6) other end is provided with the outside that rotation portion (16) butt was to support keel frame (7).
2. The supporting device for the foundation pit of the soft soil foundation according to claim 1, wherein the supporting device further comprises a supporting bottom plate (8) and inclined struts (15), the supporting bottom plate (8) is provided with a plurality of pins (9) which are inserted into the bottom of the foundation pit (1), the lower end of the supporting keel frame (7) penetrates through the supporting bottom plate (8) and then is inserted into the bottom of the foundation pit (1), the lower end of the inclined struts (15) are in butt joint with the upper ends of the pins (9), and the upper ends of the inclined struts (15) are in butt joint with the lower ends of the transverse supporting rods (71).
3. A supporting device for foundation pit of soft foundation according to claim 2, wherein the lower ends of the pins (9) are arranged obliquely downwards in a direction away from the protection plate (2).
4. A supporting device for a foundation pit of a soft soil foundation according to claim 2, wherein the supporting keel frame (7) comprises a transverse supporting rod (71) and a longitudinal supporting rod (72), the lower ends of the longitudinal supporting rods (72) are pointed, the longitudinal supporting rods (72) are attached to the side walls of the protection plates (2), the transverse supporting rods (71) are attached to the outer walls of the longitudinal supporting rods (72), and the rotating parts (16) are abutted to the outer sides of the transverse supporting rods (71) after penetrating through the protection plates (2) and the transverse supporting rods (71).
5. A supporting device for a foundation pit of a soft foundation according to claim 4, wherein the transverse supporting rods (71) and the longitudinal supporting rods (72) are C-shaped channel steel.
6. The supporting device for the foundation pit of the soft soil foundation according to claim 1, wherein a double-headed screw (10) is arranged in the clamping wood block (5), one end of the double-headed screw (10) is in threaded connection with the clamping wood block (5), and the other end of the double-headed screw is in threaded connection with the reinforcing rod (6).
7. The supporting device for the foundation pit of the soft soil foundation according to claim 1, wherein the embedded mesh cloth (3) is waterproof cloth, through holes for the double-headed screws (10) to pass through are formed in the embedded mesh cloth (3), waterproof cloth (11) is paved on the top surface of the reinforced soil body (4), one side of the waterproof cloth (11) is connected with the embedded mesh cloth (3), and the other side of the waterproof cloth is connected with the protection plate (2).
8. The supporting device for the foundation pit of the soft foundation according to claim 1, wherein a plurality of pairs of steel sheets (12) are clamped at two sides of the embedded mesh (3), each pair of steel sheets (12) is uniformly arranged along the length direction of the foundation pit (1), a blade (13) for scratching the embedded mesh (3) is arranged at the lower end of each pair of steel sheets (12), and the blade (13) is fixed at the lower end of each pair of steel sheets (12) and the blade edge faces the upper end of the steel sheets (12).
9. The supporting device for the foundation pit of the soft soil foundation according to claim 8, wherein a plurality of groups of limiting ropes (14) are sewn at positions corresponding to the steel sheets (12) on the embedded mesh cloth (3), and the limiting ropes (14) are uniformly distributed on the length direction of the steel sheets (12) to form a sliding track of the steel sheets (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322181971.8U CN220666243U (en) | 2023-08-14 | 2023-08-14 | Soft soil foundation pit is with strutting arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322181971.8U CN220666243U (en) | 2023-08-14 | 2023-08-14 | Soft soil foundation pit is with strutting arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220666243U true CN220666243U (en) | 2024-03-26 |
Family
ID=90328160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322181971.8U Active CN220666243U (en) | 2023-08-14 | 2023-08-14 | Soft soil foundation pit is with strutting arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220666243U (en) |
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2023
- 2023-08-14 CN CN202322181971.8U patent/CN220666243U/en active Active
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