CN216304664U - Deep foundation pit supporting structure for multilayer soil nailing wall - Google Patents
Deep foundation pit supporting structure for multilayer soil nailing wall Download PDFInfo
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- CN216304664U CN216304664U CN202122976133.0U CN202122976133U CN216304664U CN 216304664 U CN216304664 U CN 216304664U CN 202122976133 U CN202122976133 U CN 202122976133U CN 216304664 U CN216304664 U CN 216304664U
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Abstract
The application discloses multilayer soil nailing wall deep basal pit supporting structure relates to excavation supporting technical field, improves the lower problem of current multilayer soil nailing wall deep basal pit supporting structure drainage efficiency, including the first skew wall and the second skew wall that are the stair structure setting, the inside of first skew wall and second skew wall is all pegged graft and is had the hollow tube, the inside of hollow tube is pegged graft and is had the stock, the drainage mouth has been seted up to the surface of hollow tube, the bottom of hollow tube is connected with the drain pipe, the drain pipe is arranged along the direction downward sloping of keeping away from the hollow tube. This application is through the setting of hollow tube, stock, drainage mouth, drain pipe and water drainage tank, and after the hollow tube inserted the foundation ditch side slope, water in the side slope can be followed the drainage mouth and entered into in the hollow tube, and drainage water in the hollow tube is followed the drain pipe and is discharged the water drainage tank, and the process water drainage tank is unified to be discharged water, makes the water in the side slope can obtain effective drainage, improves drainage efficiency.
Description
Technical Field
The application relates to foundation pit support technical field, especially relates to a deep foundation pit support structure of multilayer soil nailing wall.
Background
The soil nailing wall is an in-situ soil body reinforcement technology. The slope of the foundation pit is reinforced by soil nails made of steel bars, a steel bar mesh is laid on the surface of the slope, and a layer of concrete surface layer is sprayed on the surface of the slope to combine with the soil slope. The soil nailing wall is constructed into a complex body formed by firmly bonding a reinforced rod piece (namely, soil nails or anchor rods) arranged in a slope body with a surrounding soil body, and a supporting structure similar to a gravity retaining wall formed by surface courses.
At present, among the current multilayer soil nail wall deep basal pit supporting structure, in order to reduce foundation ditch side slope soil erosion and water loss, need insert the drain pipe on the skew wall usually and carry out the drainage to the water in the side slope, however, current drainage structures are mostly comparatively simple, only insert the drain pipe and carry out the drainage, and the drainage effect is poor, and drainage efficiency is lower, influences the engineering progress.
SUMMERY OF THE UTILITY MODEL
In order to improve the lower problem of current multilayer soil nailing wall deep basal pit supporting structure drainage efficiency, this application provides a multilayer soil nailing wall deep basal pit supporting structure.
The application provides a deep basal pit supporting construction of multilayer soil nailing wall adopts following technical scheme:
a multilayer soil nailing wall deep foundation pit supporting structure comprises a first inclined wall, a second inclined wall and a plane layer, wherein the first inclined wall and the second inclined wall are arranged in a stepped structure, the plane layer is arranged between the first inclined wall and the second inclined wall, the top of the first inclined wall is connected with the ground, and the bottom of the second inclined wall is connected with the bottom wall of a foundation pit;
the outer side walls of the first inclined wall and the second inclined wall are respectively provided with a reinforcing steel bar net layer, and the outer side walls of the reinforcing steel bar net layers are provided with supporting layers;
the drainage device is characterized in that hollow pipes perpendicular to the first inclined wall and the second inclined wall are inserted into the first inclined wall and the second inclined wall, anchor rods are inserted into the hollow pipes, one ends of the anchor rods penetrate through the hollow pipes and are fixedly connected with the first inclined wall and the second inclined wall, drainage ports are formed in the outer surfaces of the hollow pipes, drain pipes are connected to the bottom ends of the hollow pipes and are communicated with the hollow pipes, and the drain pipes are arranged in a downward inclined mode along the direction far away from the hollow pipes.
Through adopting above-mentioned technical scheme, when strutting, with the hollow tube along first skew wall and second skew wall vertical insertion side slope in, insert the stock along the hollow tube in first skew wall and the second skew wall again, make the stock consolidate the hollow tube, avoid the hollow tube skew to appear as far as possible, afterwards, in the water in the side slope can enter into the hollow tube from the drainage mouth, the drainage water in the hollow tube is outside from the drain pipe discharge side slope.
Optionally, the reinforcing steel bar net layer is formed by binding reinforcing steel bars in a criss-cross manner, and the supporting layer is a concrete spraying layer.
By adopting the technical scheme, after the reinforcing mesh layer is laid, concrete is sprayed on the outer surface of the reinforcing mesh layer to form a supporting layer, so that the foundation pit side slope is protected.
Optionally, a water barrier layer is arranged between the reinforcing steel bar net layer and the first inclined wall and between the reinforcing steel bar net layer and the second inclined wall.
Through adopting above-mentioned technical scheme, the water barrier can be to reducing in the external water inflow side slope.
Optionally, the outer surface of the hollow tube is fixedly connected with barbs.
Through adopting above-mentioned technical scheme, the barb can strengthen the stability of hollow tube.
Optionally, the inner surface of the hollow pipe is fixedly connected with a supporting block, and the supporting block is abutted to the outer surface of the anchor rod.
Through adopting above-mentioned technical scheme, the supporting shoe plays the supporting role to the stock, leaves the space in making the hollow tube.
Optionally, the top end of the hollow tube is fixedly connected with a limiting plate.
Through adopting above-mentioned technical scheme, utilize the limiting plate to carry on spacingly to the hollow tube, make the tip of hollow tube remain the outside of first skew wall and second skew wall, be convenient for follow-up demolish.
Optionally, a separation net is arranged inside the drainage port.
Through adopting above-mentioned technical scheme, separate the net and can play the effect of stopping to earth, reduce earth and get into in the hollow tube.
Optionally, the bottom of the second inclined wall is located on the bottom wall of the foundation pit and is provided with a water drainage groove, and the inner surface of the water drainage groove is provided with a concrete layer.
Through adopting above-mentioned technical scheme, can follow the second skew wall in the drain tank is flowed into to the drain pipe discharged water, discharge in unison water through the drain tank.
In summary, the present application includes at least one of the following benefits:
1. according to the drainage device, the hollow pipe, the anchor rod, the drainage port, the drainage pipe and the drainage groove are arranged, after the hollow pipe is inserted into the side slope of the foundation pit, water in the side slope can enter the hollow pipe from the drainage port, drainage water in the hollow pipe is discharged into the drainage groove from the drainage pipe, and the water is uniformly discharged through the drainage groove, so that the water in the side slope can be effectively drained, and the drainage efficiency is improved;
2. this application can strengthen the stability of hollow tube through the setting of barb, through the setting that separates the net, can play the effect of stopping to earth, reduces in earth gets into the hollow tube, strengthens the result of use of hollow tube.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the structure of the reinforcing mesh layer of the present invention;
FIG. 3 is a schematic view of the internal structure of the hollow tube of the present invention.
Description of reference numerals: 1. a first sloped wall; 2. a second sloped wall; 3. a planar layer; 4. a reinforcing mesh layer; 5. a supporting layer; 6. a hollow tube; 7. an anchor rod; 8. a drainage opening; 9. a drain pipe; 10. a water barrier layer; 11. a barb; 12. a support block; 13. a limiting plate; 14. separating the net; 15. a water drainage groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
Referring to fig. 1, the multilayer soil nailing wall deep foundation pit supporting structure comprises a first inclined wall 1 and a second inclined wall 2 which are arranged in a stepped structure, and a plane layer 3 arranged between the first inclined wall 1 and the second inclined wall 2, wherein the top of the first inclined wall 1 is connected with the ground, the bottom of the second inclined wall 2 is connected with the bottom wall of a foundation pit, the first inclined wall 1 and the second inclined wall 2 in a stepped shape are excavated on a side slope of the foundation pit, and the foundation pit is supported by arranging the soil nailing walls on the first inclined wall 1 and the second inclined wall 2.
Referring to fig. 1 and 2, the outer side walls of the first inclined wall 1 and the second inclined wall 2 are both provided with a steel bar mesh layer 4, the steel bar mesh layer 4 is formed by binding steel bars in a criss-cross manner, the steel bar mesh layer 4 is used for primarily protecting the first inclined wall 1 and the second inclined wall 2 and reducing the falling of soil on the first inclined wall 1 and the second inclined wall 2, the outer side wall of the steel bar mesh layer 4 is provided with a support layer 5, the support layer 5 is a concrete injection layer, after the steel bar mesh layer 4 is laid, the outer surface of the steel bar mesh layer 4 is injected with concrete to form the support layer 5, a water barrier layer 10 is arranged between the steel bar mesh layer 4 and the first inclined wall 1 and the second inclined wall 2, and the water barrier layer 10 can reduce the inflow of external water into the first inclined wall 1 and the second inclined wall 2.
Referring to fig. 1 and 3, a hollow pipe 6 perpendicular to the first inclined wall 1 and the second inclined wall 2 is inserted into each of the first inclined wall 1 and the second inclined wall 2, when supporting, the hollow pipe 6 is inserted into a side slope along the first inclined wall 1 and the second inclined wall 2, a limit plate 13 is fixedly connected to the top end of the hollow pipe 6, the hollow pipe 6 is limited by the limit plate 13, so that the end of the hollow pipe 6 is retained outside the first inclined wall 1 and the second inclined wall 2, and is convenient for subsequent removal, an anchor rod 7 is inserted into the hollow pipe 6, one end of the anchor rod 7 penetrates through the hollow pipe 6 and is fixedly connected with the first inclined wall 1 and the second inclined wall 2, after the hollow pipe 6 is inserted and fixed, the anchor rod 7 is inserted into the first inclined wall 1 and the second inclined wall 2 along the hollow pipe 6, and the anchor rod 7 is fixed with the first inclined wall 1 and the second inclined wall 2, so that the anchor rod 7 can reinforce the hollow pipe 6, avoid hollow tube 6 to appear the skew as far as possible, the surface fixedly connected with barb 11 of hollow tube 6, a plurality of barbs 11 equidistance are arranged at 6 surfaces of hollow tube, and barb 11 can strengthen the stability of hollow tube 6.
Referring to fig. 1 and 3, the internal surface fixedly connected with supporting shoe 12 of hollow tube 6, supporting shoe 12 equidistance is arranged at the internal surface of hollow tube 6, supporting shoe 12 and the surface looks butt of stock 7, supporting shoe 12 plays the supporting role to stock 7, make and leave the space in the hollow tube 6, drainage mouth 8 has been seted up to the surface of hollow tube 6, a plurality of drainage mouths 8 are arranged at the surface of hollow tube 6, water in the equidistance side slope enters into hollow tube 6 from drainage mouth 8 in, the inside of drainage mouth 8 is equipped with separates net 14, it can play the effect of stopping to earth to separate net 14, it gets into in hollow tube 6 to reduce earth, the bottom of hollow tube 6 is connected with drain pipe 9, drain pipe 9 is linked together with hollow tube 6, drain pipe 9 arranges along the direction downward sloping of keeping away from hollow tube 6, the drainage water in the hollow tube 6 is discharged the side slope outside from drain pipe 9.
Referring to fig. 1, the drainage channel 15 has been seted up to 2 bottoms of second skew wall on being located the foundation ditch diapire, and the slope water flows into in the drainage channel 15 along second skew wall 2, and through drainage channel 15 to water unified emission, the internal surface of drainage channel 15 is equipped with concrete layer, and concrete layer can play the reinforcing effect to drainage channel 15.
The implementation principle of the application is as follows: during supporting, a water-resisting layer 10 is laid on a side slope, then a steel mesh layer 4 is laid on a first inclined wall 1 and a second inclined wall 2, the first inclined wall 1 and the second inclined wall 2 are subjected to primary protection, soil falling on the first inclined wall 1 and the second inclined wall 2 is reduced, after the steel mesh layer 4 is laid, concrete is sprayed on the outer surface of the steel mesh layer 4 to form a supporting layer 5, during supporting, a hollow pipe 6 is vertically inserted into the side slope along the first inclined wall 1 and the second inclined wall 2, an anchor rod 7 is inserted into the first inclined wall 1 and the second inclined wall 2 along the hollow pipe 6, the anchor rod 7 is fixed with the first inclined wall 1 and the second inclined wall 2, the hollow pipe 6 is reinforced by the anchor rod 7, the hollow pipe 6 is prevented from deviating as much as possible, water in the side slope enters the hollow pipe 6 from a drainage port 8, and drainage water in the hollow pipe 6 is drained out of the side slope from a drainage pipe 9, the slope water flows into the drainage groove 15 along the second inclined wall 2 and is uniformly discharged through the drainage groove 15.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a multilayer soil nailing wall deep basal pit supporting construction, is including first skew wall (1) and second skew wall (2) that are stair structure setting to and establish plane layer (3) between first skew wall (1) and second skew wall (2), its characterized in that: the top of the first inclined wall (1) is connected with the ground, and the bottom of the second inclined wall (2) is connected with the bottom wall of the foundation pit;
the outer side walls of the first inclined wall (1) and the second inclined wall (2) are respectively provided with a reinforcing steel mesh layer (4), and the outer side wall of each reinforcing steel mesh layer (4) is provided with a supporting layer (5);
the utility model discloses a drainage pipe, including first skew wall (1), second skew wall (2), the inside of first skew wall (1) and second skew wall (2) all is pegged graft and is had hollow tube (6) mutually perpendicular with first skew wall (1) and second skew wall (2), the inside of hollow tube (6) is pegged graft and is had stock (7), the one end of stock (7) runs through hollow tube (6) and with first skew wall (1) and second skew wall (2) fixed connection, drainage mouth (8) have been seted up to the surface of hollow tube (6), the bottom of hollow tube (6) is connected with drain pipe (9), drain pipe (9) are linked together with hollow tube (6), drain pipe (9) are along keeping away from the direction downward sloping of hollow tube (6) and are arranged.
2. The deep foundation pit supporting structure for the multi-layer soil nailing wall of claim 1, wherein: the reinforcing steel bar net layer (4) is formed by binding reinforcing steel bars in a criss-cross mode, and the supporting layer (5) is a concrete spraying layer.
3. The deep foundation pit supporting structure for the multi-layer soil nailing wall of claim 1, wherein: and a water-resisting layer (10) is arranged between the reinforcing steel bar net layer (4) and the first inclined wall (1) and the second inclined wall (2).
4. The deep foundation pit supporting structure for the multi-layer soil nailing wall of claim 1, wherein: the outer surface of the hollow pipe (6) is fixedly connected with a barb (11).
5. The deep foundation pit supporting structure for the multi-layer soil nailing wall of claim 1, wherein: the inner surface of the hollow pipe (6) is fixedly connected with a supporting block (12), and the supporting block (12) is abutted to the outer surface of the anchor rod (7).
6. The deep foundation pit supporting structure for the multi-layer soil nailing wall of claim 1, wherein: the top end of the hollow pipe (6) is fixedly connected with a limiting plate (13).
7. The deep foundation pit supporting structure for the multi-layer soil nailing wall of claim 1, wherein: the inside of drainage mouth (8) is equipped with separates net (14).
8. The deep foundation pit supporting structure for the multi-layer soil nailing wall of claim 1, wherein: and the bottom of the second inclined wall (2) is positioned on the bottom wall of the foundation pit and is provided with a drainage groove (15), and the inner surface of the drainage groove (15) is provided with a concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122976133.0U CN216304664U (en) | 2021-11-30 | 2021-11-30 | Deep foundation pit supporting structure for multilayer soil nailing wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122976133.0U CN216304664U (en) | 2021-11-30 | 2021-11-30 | Deep foundation pit supporting structure for multilayer soil nailing wall |
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| CN216304664U true CN216304664U (en) | 2022-04-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892676A (en) * | 2022-06-02 | 2022-08-12 | 中铁十五局集团第五工程有限公司 | Foundation pit soil nailing wall support and construction method thereof |
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- 2021-11-30 CN CN202122976133.0U patent/CN216304664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892676A (en) * | 2022-06-02 | 2022-08-12 | 中铁十五局集团第五工程有限公司 | Foundation pit soil nailing wall support and construction method thereof |
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