CN217517613U

CN217517613U - Waterproof supporting system for deep foundation pit

Info

Publication number: CN217517613U
Application number: CN202221697479.5U
Authority: CN
Inventors: 麻书玉; 麻三勇; 麻书华; 麻林杰; 麻林强; 麻志勇
Original assignee: Jishida Construction Group Co ltd
Current assignee: Jishida Construction Group Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-09-30
Anticipated expiration: 2032-07-01

Abstract

The utility model relates to a deep basal pit waterproof support system belongs to excavation supporting technical field, and it includes a plurality of fender piles, reinforcing bar net piece and impervious concrete layer, and the reinforcing bar net piece sets up the one side that deviates from the soil body at a fender pile, and impervious concrete layer sets up the one side that deviates from the soil body at a fender pile. This application has the waterproof effect that improves the supporting system, reduces the water in the soil body and runs off from the concrete body between the fender pile, and then reduces the silt loss in water area soil body to reduce the possibility that the soil body collapses, improve the effect of the security of the interior construction of deep basal pit.

Description

Waterproof supporting system for deep foundation pit

Technical Field

The application relates to the technical field of foundation pit support, in particular to a deep foundation pit waterproof support system.

Background

The support is a retaining, reinforcing and protecting measure adopted for the side wall and the surrounding environment in order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit.

The common support is a row pile support, which generally comprises support piles and concrete sprayed among the support piles, and the row pile support is an important component of deep foundation pit support.

In view of the above-mentioned related technologies, the inventor believes that water in a soil body between pile bodies flows out from a concrete layer gap between the pile bodies, so that silt is carried by water and flows into a deep foundation pit through a supporting system, and as time goes on, the silt in the soil body is lost more and more, so that the possibility that the supporting pile is pressed down due to soil body collapse is increased continuously, and the later construction safety is seriously affected.

SUMMERY OF THE UTILITY MODEL

In order to improve the waterproof effect of supporting system, and then reduce the silt loss in water area soil body to reduce the possibility that the soil body collapses, improve the security of construction in the deep basal pit, this application provides a deep basal pit waterproof supporting system.

The application provides a deep basal pit waterproof supporting system adopts following technical scheme:

the utility model provides a deep basal pit waterproof supporting system, includes a plurality of fender piles, reinforcing bar net piece and impervious concrete layer, the reinforcing bar net piece sets up the one side that deviates from the soil body at a fender pile, impervious concrete layer sets up the one side that deviates from the soil body at a fender pile.

Through adopting above-mentioned technical scheme, because impervious concrete's closely knit degree is higher, the seepage passageway is less, and the internal water of soil is difficult for flowing out between the fender pile, improves the waterproof effect of supporting system, and then reduces the water and takes the internal silt of soil to run off to reduce the possibility that the soil body collapses, improve the security when being under construction in the deep basal pit.

Optionally, a cement-based infiltration crystallization coating layer is arranged on the surface of the impervious concrete layer.

By adopting the technical scheme, the cement-based permeable crystallization coating layer further closely seals gaps between impervious concrete layers, and the waterproof effect of the impervious concrete layer is further improved.

Optionally, a waterproof finishing layer is arranged on the cement-based permeable crystallization coating layer.

By adopting the technical scheme, the waterproof rendering coat has higher compactness and fewer surface gaps, further reduces the possibility that water in a soil body flows out from among the supporting piles, improves the waterproof effect of the impervious concrete layer, and enables the impervious concrete surface to be smooth.

Optionally, an anchoring steel bar is implanted into a soil body between adjacent supporting piles, grouting material is injected between the anchoring steel bar and the soil body, and the anchoring steel bar is connected with the steel mesh sheets in an interconnecting mode.

By adopting the technical scheme, the anchoring steel bars enable the steel bar net piece to tightly pull the impervious concrete layer to be attached to the soil body, so that the impervious concrete layer is more firmly arranged between the adjacent supporting piles, the collapse condition of the impervious concrete layer is reduced, and the construction safety is improved.

Optionally, a first chemical bolt is implanted into one side of the supporting pile, which is far away from the soil body, and one end of the first chemical bolt, which is far away from the supporting pile, is connected with the reinforcing mesh through binding and is located in the impervious concrete layer.

Through adopting above-mentioned technical scheme, first chemical bolt makes the reinforcing bar net piece tightly draw impervious concrete layer and a fender pile closely laminate, has improved the steadiness in infiltration concrete layer.

Optionally, a second chemical bolt is implanted above the first chemical bolt of the support pile, the tops of the support piles are connected through a crown beam, one end, far away from the support pile, of the second chemical bolt is connected with a steel bar in the crown beam, and the second chemical bolt is arranged in the crown beam.

By adopting the technical scheme, the crown beam connects the supporting piles to form a whole, and the second chemical bolt enables the reinforcing steel bars in the crown beam to tightly pull the crown beam, so that the crown beam is better combined with the supporting piles, the stability of the supporting piles is improved, and the safety of a supporting system is further improved.

Optionally, one end of each of the first chemical bolt and the second chemical bolt, which is far away from the support pile, is provided with a connecting device for fixing the first chemical bolt and the second chemical bolt with the steel bar.

Through adopting above-mentioned technical scheme, improved first chemical bolt, the steadiness that second chemical bolt and steel bar connection through connecting device.

Optionally, the connecting device includes a fixing column and a fixing nut, one end of each of the first chemical bolt and the second chemical bolt, which is far away from the support pile, is fixed to one end of the fixing column, a fixing groove is formed in the other end of the fixing column, the fixing nut is in threaded connection with the fixing column, and the inner diameter of the fixing groove is smaller than the outer diameter of the reinforcing mesh.

Through adopting above-mentioned technical scheme, the reinforcing bar is tightly carried to the fixed recess in the fixed column to make the reinforcing bar be difficult for breaking away from with the fixed column, strengthened first chemical bolt, the fixed action of second chemical bolt to the reinforcing bar.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the reinforcing mesh, the impervious concrete layer, the cement-based permeable crystalline coating layer and the waterproof plastering layer are sequentially arranged on one side, away from the soil body, of the support pile, so that the waterproof effect of the support system is improved, and the loss of silt in the soil body caused by water is reduced, thereby reducing the possibility of soil body collapse and improving the safety of deep foundation pit construction;

2. through setting up anchor reinforcing bar, first chemical bolt and second chemical bolt, make hat roof beam, impervious concrete layer combine better with a fender pile, improved the whole steadiness of supporting system, improved the bearing capacity to the soil body, reduce the phenomenon that the soil body collapses appears, improved the security of construction.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

FIG. 2 is a schematic structural diagram for embodying grouting material and a connecting device according to an embodiment of the present application

FIG. 3 is a schematic diagram showing the arrangement relationship among the impervious concrete layer, the cement-based impervious crystalline coating layer and the waterproof rendering layer according to the embodiment of the present application.

Description of the reference numerals: 1. supporting piles; 11. a first chemical bolt; 12. a second chemical bolt; 2. reinforcing mesh sheets; 21. anchoring the reinforcing steel bars; 22. grouting material; 3. an impervious concrete layer; 4. a cement-based infiltration crystallization coating layer; 5. a waterproof finishing layer; 6. a soil body; 7. a connecting device; 71. fixing a column; 72. fixing a nut; 73. fixing the groove; 8. a crown beam.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses deep basal pit waterproof supporting system.

As shown in fig. 1 and 2, the deep foundation pit waterproof supporting system comprises a plurality of supporting piles 1, reinforcing mesh sheets 2, impervious concrete layers 3 and connecting devices 7, the supporting piles 1 are distributed on the side wall of the deep foundation pit and are arranged at intervals along the inner contour of the deep foundation pit, the lower ends of the supporting piles 1 are embedded in soil bodies 6 below the deep foundation pit, a plurality of first chemical bolts 11 are vertically implanted into the supporting piles 1 along the length direction of the supporting piles, the first chemical bolts 11 are equidistantly distributed on the supporting piles 1, a plurality of anchoring reinforcing bars 21 are vertically implanted into the soil bodies 6 between adjacent supporting piles 1, grouting materials 22 are poured between one ends, inserted into the soil bodies 6, of the anchoring reinforcing bars 21 and the soil bodies 6, the grouting materials 22 are high-strength grouting materials, and the grouting materials 22 tightly wrap the anchoring reinforcing bars 21 and tightly attach the grouting materials 22 to the soil bodies 6.

Reinforcing bar net piece 2 full cloth is in the inside one side of deep basal pit of fender pile 1 orientation, and the one end that a fender pile 1 was kept away from to first chemical bolt 11 is passed through connecting device 7 and is connected fixedly with reinforcing bar net piece 2, and anchor reinforcing bar 21 and reinforcing bar net piece 2 bound are connected.

As shown in fig. 3, the impervious concrete layer 3 is sprayed on one side of the support pile 1 facing the inside of the deep foundation pit and is tightly combined with the reinforcing mesh piece 2, the impervious grade adopted by the impervious concrete layer 3 is concrete with more than P6, the cement-based infiltration crystalline coating layer 4 is coated on one side of the impervious concrete layer 3 facing the deep foundation pit, and the waterproof plastering layer 5 is coated with waterproof mortar on one side of the cement-based infiltration crystalline coating layer 4 facing the deep foundation pit.

In the use, first chemical bolt 11, anchor reinforcing bar 21 tightly draw the reinforcing bar net piece 2 and fix in the one side of a fender pile 1 towards deep basal pit, and then make the reinforcing bar net piece 2 strain impervious concrete layer 3 to make impervious concrete layer 3 closely laminate with a fender pile 1, the soil body 6 between the fender pile 1, and then improve the holistic steadiness of supporting system.

The impermeability concrete layer 3 has high compactness and fewer pores, so that permeation channels are reduced, the silicone ions dissolved out from the cement-based permeable crystalline coating layer 4 are permeated and diffused in the impermeability concrete layer 3 and chemically react with the impermeability concrete layer 3 to generate water-insoluble crystals, and the crystals fill the capillary pores in the impermeability concrete layer 3 and are integrated with the impermeability concrete layer 3 to block the capillary pores inside the impermeability concrete layer 3, so that the impermeability concrete layer 3 is compact.

Waterproof mortar of waterproof rendering coat 5 has good compactedness and high adhesive force, if there is water from having flowed through impervious concrete and cement base infiltration crystallization dope layer 4, waterproof rendering coat 5 still has the effect of blockking rivers and flowing out, through setting up impervious concrete layer 3, cement base infiltration

crystallization dope layer

4 and 5 multichannel waterproof layers of waterproof rendering coat, the holistic waterproof effect of supporting system has been strengthened, make the retentivity of silt in the soil body 6 improve, thereby reduce the possibility that soil body 6 collapses, increased the factor of safety that improves deep basal pit construction.

Referring to fig. 3, the upper part of the support pile 1 is provided with second chemical bolts 12 arranged along the length direction thereof, one end of each second chemical bolt 12 is anchored in the support pile 1 and is perpendicular to the support pile 1, the upper parts of the plurality of support piles 1 are connected by the crown beam 8, one end of each second chemical bolt 12 far from the support pile 1 is connected with the connecting device 7, the second chemical bolt 12 is connected with the steel bar in the crown beam 8 by the connecting device 7,

in the use, guan liang 8 makes a fender pile 1 upper portion be linked into a whole, and second chemical bolt 12 and guan liang 8 reinforcing bar fixed connection, guan liang 8 reinforcing bar tightly draw guan liang 8 and a fender pile 1 closely laminate, have improved the holistic steadiness in a fender pile 1 upper portion, have reduced the hole top edge of deep basal pit and have produced the possibility of collapsing, have improved the security of deep basal pit construction.

As shown in fig. 2, the connecting device 7 includes a fixing column 71 and a fixing nut 72, the fixing nut 72 is screwed on the fixing column 71, and one end of the fixing column 71 is provided with a fixing groove 73 extending along the length direction thereof, the width of the fixing groove 73 is smaller than the outer diameter of the steel bar by 0.5-1mm, the fixing column 71 corresponds to the first chemical bolt 11 and the second chemical bolt 12 respectively, the first chemical bolt 11 and the corresponding fixing column 71 are coaxially fixed at an end far from the fixing groove 73, and the second chemical bolt 12 and the corresponding fixing column 71 are coaxially fixed at an end far from the fixing groove 73.

In the use, when the reinforcing bar card was in fixed recess 73, twisted fixation nut 72 to fixed recess 73's notch department, reduced the condition that fixed recess 73 led to fixed recess 73 to warp by the effect of reinforcing bar, and then made the interior lateral wall of fixed recess 73 can maintain the state of supporting tightly with the reinforcing bar lateral wall to make fixed column 71 and reinforcing bar interconnect, strengthened the fixed action of first chemical bolt 11, second chemical bolt 12 and reinforcing bar.

The implementation principle of the embodiment of the application is as follows: through arranging reinforcing bar net piece 2 in proper order in the one side that deviates from soil body 6 at fender pile 1, impervious concrete layer 3, cement base infiltration crystallization dope layer 4 and waterproof rendering coat 5, the waterproofing action of supporting system has been improved, thereby the silt retention rate of soil body 6 has been improved, the possibility that the deep basal pit collapses has been reduced, and through setting up first chemical bolt 11, the connection effect of fender pile 1 impervious concrete layer 3 has been strengthened to second chemical bolt 12 and anchor reinforcing bar 21, the holistic steadiness of supporting system has been improved, thereby reduce the possibility that soil body 6 collapses, the security of construction in the deep basal pit is improved.

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

1. The utility model provides a deep basal pit waterproof support system which characterized in that: the concrete anti-seepage pile is characterized by comprising a plurality of supporting piles (1), a reinforcing steel bar net piece (2) and an anti-seepage concrete layer (3), wherein the reinforcing steel bar net piece (2) is arranged on one side of the supporting pile (1) deviating from a soil body (6), and the anti-seepage concrete layer (3) is arranged on one side of the supporting pile (1) deviating from the soil body (6).

2. The deep foundation pit waterproof and supporting system according to claim 1, wherein: and a cement-based permeable crystallization coating layer (4) is arranged on the surface of the impervious concrete layer (3).

3. The deep foundation pit waterproof and supporting system according to claim 2, wherein: and a waterproof finishing layer (5) is arranged on the cement-based permeable crystallization coating layer (4).

4. The deep foundation pit waterproof and supporting system according to claim 1, wherein: anchoring reinforcing steel bars (21) are implanted into soil bodies (6) between adjacent supporting piles (1), grouting materials (22) are injected between the anchoring reinforcing steel bars (21) and the soil bodies (6), and the anchoring reinforcing steel bars (21) are connected with reinforcing steel mesh sheets (2) mutually.

5. The deep foundation pit waterproof and supporting system according to claim 1, wherein: a first chemical bolt (11) is implanted into one side of the support pile (1) deviating from the soil body (6), and one end of the support pile (1) is kept away from by the first chemical bolt (11), is connected with the steel mesh sheet (2) in a binding manner and is positioned in the impervious concrete layer (3).

6. The deep foundation pit waterproof and supporting system according to claim 5, wherein: a second chemical bolt (12) is implanted above a first chemical bolt (11) of the support pile (1), the tops of the support piles (1) are connected through a crown beam (8), one end, far away from the support pile (1), of the second chemical bolt (12) is connected with a steel bar in the crown beam (8), and the second chemical bolt (12) is arranged in the crown beam (8).

7. The deep foundation pit waterproof and supporting system according to claim 6, wherein: and one ends of the first chemical bolts (11) and the second chemical bolts (12) far away from the support piles (1) are respectively provided with a connecting device (7) used for fixing the support piles with the reinforcing steel bars.

8. The deep foundation pit waterproof and supporting system according to claim 7, wherein: the connecting device (7) comprises a fixing column (71) and a fixing nut (72), one end, far away from the supporting pile (1), of the first chemical bolt (11) and the second chemical bolt (12) is fixed to one end of the fixing column (71), a fixing groove (73) is formed in the other end of the fixing column (71), the fixing nut (72) is in threaded connection with the fixing column (71), and the inner diameter of the fixing groove (73) is smaller than the outer diameter of the reinforcing mesh (2).