CN210066763U - Foundation pit side wall structure reinforcing and supporting device - Google Patents
Foundation pit side wall structure reinforcing and supporting device Download PDFInfo
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- CN210066763U CN210066763U CN201920401083.3U CN201920401083U CN210066763U CN 210066763 U CN210066763 U CN 210066763U CN 201920401083 U CN201920401083 U CN 201920401083U CN 210066763 U CN210066763 U CN 210066763U
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- foundation pit
- side wall
- lateral wall
- foundation ditch
- pit side
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Abstract
The utility model belongs to the technical field of excavation supporting, a foundation ditch lateral wall structure consolidates supporting device is disclosed for do not consider the problem of the interior prestressing force tubular pile of foundation ditch lateral wall deformation influence to the foundation ditch lateral wall in order to solve current excavation supporting device. The utility model discloses a set up the slip casting hole in the foundation ditch lateral wall to throw into soil nail and pouring cement thick liquid and form a body structure in the slip casting hole, then connect the purpose that reaches common atress through steel strand wires and the prestressing force tubular pile of itself in the foundation ditch lateral wall, not only can improve the ability of shearing, compare simultaneously and adopt ordinary spray anchor to strut in prior art foundation ditch lateral wall, can also reach the purpose that reduces stock construction work load, thereby reduce the cost that the foundation ditch lateral wall was strutted.
Description
Technical Field
The utility model belongs to the technical field of the foundation ditch lateral wall is consolidated, concretely relates to foundation ditch lateral wall structure consolidates supporting device.
Background
The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit. The prior art has more technical documents related to foundation pit support, for example, the utility model with application number 201720031646.5 discloses a foundation pit support with a structure beneficial to drainage, which comprises a foundation pit support plate, wherein an anchor rod is arranged in the foundation pit support plate and is inserted into the slope wall, the foundation pit support plate and the slope wall are fixedly connected through the anchor rod, one side of the foundation pit support plate is tightly attached to the slope wall, the other side of the foundation pit support plate is provided with a drainage pipe, the drainage pipe passes through the interior of the foundation pit support plate, the water drainage pipe is fixedly connected with the foundation pit support guard plate, the front end of the water drainage pipe is provided with a nylon net which is wrapped outside the water drainage pipe, a water filtering groove is dug inside the slope wall, the nylon net is arranged in the water filtering groove, the inside of the water filtering groove is filled with gravels, the left end of the foundation pit supporting plate is provided with a bulge, the right end of the foundation pit supporting plate is provided with a groove, the groove and the bulge are matched with each other, and the back of the foundation pit supporting plate is provided with a reinforcing rib; the diameter of the broken stone is 3-5mm, and the anchor rod and the drain pipe are obliquely arranged; a rubber pad is arranged inside the groove; the foundation pit supporting and protecting plate is rectangular, and the bulge and the groove are respectively arranged on two sides of the foundation pit supporting and protecting plate in parallel; the reinforcing ribs comprise a first reinforcing rib and a second reinforcing rib, the first reinforcing rib and the second reinforcing rib are arranged vertically, and the first reinforcing rib and the second reinforcing rib are fixedly connected with the foundation pit supporting plate; the first reinforcing rib and the second reinforcing rib are at least provided with two groups, the first reinforcing rib and the second reinforcing rib are made of channel steel, and the first reinforcing rib is arranged between the two adjacent groups of second reinforcing ribs.
For example, the utility model with application number 201720348680.5 discloses a deep foundation pit supporting device, which comprises a cast-in-place pile and a vertical foundation pit, wherein the cast-in-place pile is preset at the edge of the vertical foundation pit, the top of the cast-in-place pile is fixedly connected to a supporting connecting beam, the inner side of the supporting connecting beam is fixedly connected to a supporting beam through a supporting main beam, the supporting connecting beam and the supporting beam are both fixedly connected to the top end of a supporting column, the bottom end of the supporting column is fixedly connected to the bottom of the vertical foundation pit, a slope foundation pit is arranged at the outer side of the vertical foundation pit, and an annular; soil nails are uniformly inserted into the slope surface of the slope foundation pit, the soil nails are perpendicular to the slope surface, and a supporting surface is fixedly connected onto the soil nails; the supporting surface is a concrete spraying surface, and a reinforcing mesh is preset in the supporting surface; the cast-in-place piles are uniformly distributed along the edge of the vertical foundation pit, and a bearing pedestal is integrally arranged on one side, facing the vertical foundation pit, of the top of each cast-in-place pile and fixedly connected to the support connecting beam; the cast-in-place pile is fixedly connected with soil nails vertical to the cast-in-place pile, the soil nails are fixedly connected with reinforcing surfaces, and the reinforcing surfaces are concrete building parts pre-embedded with reinforcement cages
The utility model discloses a utility model patent application number is 201621209334.0 discloses a supporting construction of foundation ditch, and the foundation ditch that should strut comprises the both sides foundation ditch of foundation ditch both sides in the middle of a foundation ditch and this to the degree of depth of middle foundation ditch is less than the both sides foundation ditch, include: driving a foundation pile of the middle foundation pit and support piles of foundation pits at two sides in earthwork below the base elevation of the middle foundation pit; a structural bottom plate is arranged at the elevation of the base of the middle foundation pit and is combined with the top ends of the foundation piles and the supporting piles; a prestressed counter-pulling anchor cable is arranged between the gaps of the opposite support piles of the foundation pits at the two sides in a penetrating manner; a hanging plate is arranged on the outer side of the supporting pile; the supporting piles are positioned on the periphery of the middle foundation pit; the hanging plate comprises a plurality of expansion bolts, a plurality of pieces of reinforcing mesh and a concrete layer, wherein the expansion bolts are longitudinally arranged at intervals on the outer side of each supporting pile, the reinforcing mesh is hung on the expansion bolts, and the concrete layer is arranged in the gap area between the adjacent supporting piles and the reinforcing mesh area hung on the outer side of the supporting pile; the supporting piles are densely arranged supporting piles; the structural bottom plate is made of reinforced concrete; horizontally arranging the prestressed counter-pulling anchor cables; and waist beams are arranged on the outer sides of the support piles at the positions of the prestressed opposite-pulling anchor cables.
Although the prior art has more technical documents for foundation pit support, in the specific construction process, prestressed pipe piles are arranged in the side wall around part of the foundation pit, and the existence of the prestressed pipe piles can cause the deformation of the foundation pit.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current excavation supporting device and do not consider the problem that the interior prestressing force tubular pile of foundation ditch lateral wall warp the influence to the foundation ditch lateral wall, and provide a foundation ditch lateral wall structure reinforcing and supporting device, through technical improvement, can improve the ability of shearing of foundation ditch lateral wall, improve excavation supporting's steadiness.
For solving the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides a foundation ditch lateral wall structure reinforcement supporting device, is including burying the prestressing force tubular pile in the foundation ditch lateral wall underground, its characterized in that is equipped with the grout hole between the side slope of prestressing force tubular pile and foundation ditch lateral wall, and the downthehole soil nail that stretches into under the foundation ditch bottom surface of throwing of grout, and it has grout to pour into in the soil nail and the clearance between soil nail and the grout hole, and the soil nail forms a body structure and is connected with the prestressing force tubular pile through steel strand wires after the grout curing in the grout hole.
Be equipped with the stock that a plurality of slopes set up in the foundation ditch lateral wall, the length from top to bottom that the stock stretched into in the foundation ditch lateral wall reduces gradually.
As an optimal mode of the utility model, each stock is parallel to each other.
And a reinforcing mesh is laid at the side slope of the side wall of the foundation pit, and the side slope of each anchor rod extending out of the side wall of the foundation pit is connected with the reinforcing mesh and sprayed with a cement concrete layer.
Reinforcing steel bars are arranged on the reinforcing steel bar mesh sheets at intervals.
And a plurality of drain holes are formed in the side slope of the side wall of the foundation pit.
And a water intercepting groove is formed in the top surface of the side wall of the foundation pit between the prestressed pipe pile and the soil nail.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a foundation ditch lateral wall structure consolidates supporting device, including burying underground the prestressing force tubular pile in the foundation ditch lateral wall, be equipped with the grout hole between prestressing force tubular pile and the foundation ditch lateral wall side slope, the downthehole soil nail that stretches into under the foundation ditch bottom surface of throwing of grout, it has the grout to pour into in the soil nail and the clearance between soil nail and the grout hole, and the downthehole grout maintenance of soil nail and grout solidifies the back and form a body structure and be connected with the prestressing force tubular pile through steel strand wires. The utility model discloses a set up the slip casting hole in the foundation ditch lateral wall to throw into soil nail and pouring cement thick liquid and form a body structure in the slip casting hole, then connect the purpose that reaches common atress through steel strand wires and the prestressing force tubular pile of itself in the foundation ditch lateral wall, not only can improve the ability of shearing, compare simultaneously and adopt ordinary spray anchor to strut in prior art foundation ditch lateral wall, can also reach the purpose that reduces stock construction work load, thereby reduce the cost that the foundation ditch lateral wall was strutted.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the reinforcing mesh of the present invention;
fig. 3 is a plan view of an embodiment of the present invention;
the labels in the figure are: 1. the foundation pit, 2, the foundation pit lateral wall, 3, the side slope of foundation pit lateral wall, 4, the prestressed pipe pile, 5, soil nail, 6, steel strand wires, 7, stock, 8, cut-off basin, 9, reinforcing bar net piece, 10, wash port, 11, reinforcement reinforcing bar.
Detailed Description
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
Combine the attached drawing, the utility model discloses a foundation ditch lateral wall structure reinforcement supporting device, including burying the prestressing force tubular pile 4 in foundation ditch lateral wall 2 underground, wherein, the lower extreme of prestressing force tubular pile 4 is arranged in the soil body under 1 bottom surface of foundation ditch, be equipped with the injected hole (not drawn in the attached drawing) between the side slope of prestressing force tubular pile 4 and foundation ditch lateral wall, throw in the injected hole and stretch into soil nail 5 under 1 bottom surface of foundation ditch, the grout has been poured into in the soil nail 5 and the clearance between soil nail 5 and the injected hole, form a body structure and be connected with prestressing force tubular pile 4 through steel strand wires 6 after soil nail and the downthehole grout maintenance of grouting. In the specific construction process, the cement paste of the grouting hole is cured to reach 70% of the strength of M25, and then the grouting hole can be connected with the prestressed pipe pile through the steel strand. Here, it should be noted that the steel strand 6 is connected to the upper ends of the prestressed pipe pile 4 and the soil nail 5 in the grouting hole.
It should be noted that the inner diameter of the grouting hole is larger than the outer diameter of the soil nail, that is, the size of the soil nail is smaller than that of the grouting hole. For example, in the specific construction process, the diameter of the grouting hole is 150mm, and then the soil nail with the diameter of 48mm and the wall thickness of 3mm is selected as the soil nail, so that the grouted cement paste and the soil nail form an integral structure.
The soil nails function to improve the shear resistance. According to the actual conditions of different projects, soil nails do not need to be placed in the grouting holes, and the prestressed pipe piles and the cement columns in the grouting holes are directly connected through the steel strands, so that the purpose of common stress is achieved.
The utility model discloses a foundation ditch lateral wall structure consolidates supporting device, including burying underground the prestressing force tubular pile in the foundation ditch lateral wall, be equipped with the grout hole between prestressing force tubular pile and the foundation ditch lateral wall side slope, the downthehole soil nail that stretches into under the foundation ditch bottom surface of throwing of grout, it has the grout to pour into in the soil nail and the clearance between soil nail and the grout hole, and the downthehole grout maintenance of soil nail and grout solidifies the back and form a body structure and be connected with the prestressing force tubular pile through steel strand wires. The utility model discloses a set up the slip casting hole in the foundation ditch lateral wall to throw into soil nail and pouring cement thick liquid and form a body structure in the slip casting hole, then connect the purpose that reaches common atress through steel strand wires and the prestressing force tubular pile of itself in the foundation ditch lateral wall, not only can improve the ability of shearing, compare simultaneously and adopt ordinary spray anchor to strut in prior art foundation ditch lateral wall, can also reach the purpose that reduces stock construction work load, thereby reduce the cost that the foundation ditch lateral wall was strutted.
In the specific implementation process, the prestressed pipe piles 4 and the soil nails 5 can be connected through other connectors, but in the engineering construction, steel strands are preferably selected for connection.
A plurality of obliquely arranged anchor rods 7 are arranged in the foundation pit side wall 2, and for example, when the slope ratio of the side slope 3 of the foundation pit side wall is 1:0.6, the inclination angle of the anchor rods is 15 degrees. The length of the anchor rods 7 extending into the side wall 2 of the foundation pit is gradually reduced from top to bottom. As an optimal mode of the present invention, each anchor 7 is disposed in parallel with each other.
And a reinforcing mesh 9 is laid at the side slope 3 of the side wall of the foundation pit, and the side slope 3 of each anchor rod 7 extending out of the side wall of the foundation pit is connected with a reinforcing mesh 10 and is sprayed with a cement concrete layer.
As an optimal mode of the utility model, the reinforcing bar 11 is provided with on the reinforcing bar net piece 9 spaced.
And a plurality of drain holes 10 are formed in the side slope 3 of the side wall of the foundation pit.
The spray anchor support is used for reinforcing the slope by means of the combined action of high-pressure cement concrete spraying and a metal anchor rod driven into the side wall of the foundation pit, and belongs to the prior art.
And a water intercepting groove 8 is formed in the top surface of the foundation pit side wall 2 between the prestressed pipe pile 4 and the soil nail 5 and used for preventing water from flowing out of a side slope of the foundation pit side wall.
With reference to fig. 3, fig. 3 shows that the applicant becomes a project, the whole project is a basement of one floor, in the concrete construction process, the process is carried out in a subsection mode, the section AB, the section CD, the section DE, the section EF, the section FG and the section GH are supported by spray anchors, and the rest sections are naturally set on a slope. The whole project has higher construction difficulty, so the cost and the workload of the common spray anchor support are very high, and the workload of driving the anchor rod is very high.
Therefore, the method of grouting holes and inserting soil nails is adopted, and the soil nails are connected with the prestressed pipe piles in the side wall of the foundation pit to achieve the purpose of common stress, so that the effect of foundation pit reinforcement and support is achieved.
Claims (7)
1. The utility model provides a foundation ditch lateral wall structure reinforcement supporting device, including burying prestressing force tubular pile (4) in foundation ditch lateral wall (2) underground, a serial communication port, be equipped with the slip casting hole between side slope (3) of prestressing force tubular pile (4) and foundation ditch lateral wall, the downthehole soil nail (5) of stretching into under foundation ditch (1) bottom surface of throwing of slip casting, the grout has been groud in soil nail (5) and the clearance between soil nail and the slip casting hole, soil nail and the downthehole grout maintenance of slip casting form a body structure and are connected with prestressing force tubular pile (4) through steel strand wires (6) after solidifying.
2. The foundation pit side wall structure reinforcing and supporting device according to claim 1, characterized in that a plurality of obliquely arranged anchor rods (7) are arranged in the foundation pit side wall (2), and the length of the anchor rods (7) extending into the foundation pit side wall is gradually reduced from top to bottom.
3. The foundation pit side wall structural reinforcing and support device according to claim 2, characterized in that the respective anchor rods (7) are arranged in parallel with each other.
4. The foundation pit side wall structure reinforcing and supporting device according to claim 1, wherein a steel mesh (9) is laid at the side slope (3) of the foundation pit side wall, and each anchor rod (7) extends out of the side slope of the foundation pit side wall to be connected with the steel mesh and is sprayed with a cement concrete layer.
5. The foundation pit side wall structure reinforcing and supporting device according to claim 4, wherein reinforcing steel bars (11) are arranged on the steel bar mesh (9) at intervals.
6. The foundation pit side wall structure reinforcing and supporting device according to claim 1, wherein the side slope (3) of the foundation pit side wall is provided with a plurality of drainage holes (10).
7. The foundation pit side wall structure reinforcing and supporting device according to any one of claims 1-6, wherein a water cut-off groove (8) is formed in the top surface of the foundation pit side wall between the prestressed pipe piles (4) and the soil nails (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401083.3U CN210066763U (en) | 2019-03-27 | 2019-03-27 | Foundation pit side wall structure reinforcing and supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401083.3U CN210066763U (en) | 2019-03-27 | 2019-03-27 | Foundation pit side wall structure reinforcing and supporting device |
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| Publication Number | Publication Date |
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| CN210066763U true CN210066763U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920401083.3U Active CN210066763U (en) | 2019-03-27 | 2019-03-27 | Foundation pit side wall structure reinforcing and supporting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004938A (en) * | 2019-03-27 | 2019-07-12 | 中冶成都勘察研究总院有限公司 | A kind of foundation pit side-wall structural strengthening suspension device |
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2019
- 2019-03-27 CN CN201920401083.3U patent/CN210066763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004938A (en) * | 2019-03-27 | 2019-07-12 | 中冶成都勘察研究总院有限公司 | A kind of foundation pit side-wall structural strengthening suspension device |
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