CN212375881U - T-shaped anti-slide pile structure for excavation side slope - Google Patents
T-shaped anti-slide pile structure for excavation side slope Download PDFInfo
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- CN212375881U CN212375881U CN202020175835.1U CN202020175835U CN212375881U CN 212375881 U CN212375881 U CN 212375881U CN 202020175835 U CN202020175835 U CN 202020175835U CN 212375881 U CN212375881 U CN 212375881U
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Abstract
The utility model relates to a T shape friction pile structure for excavation side slope, T shape friction pile structure is located the leading edge of existing artifical mound or weak soil, and top-down includes cantilever section and anchor section, and the anchor section is located existing artifical mound or weak soil layer, and the embedding is in existing artifical mound or the certain degree of depth of weak soil, and anchor section and cantilever section are all through the stake of bored concrete pile stake. The utility model discloses can provide than artifical fill out or the power that the weak soil is far greater to reduce the anchor segment length, show and improve friction pile stability, reduce the construction degree of difficulty, save the investment. Can be popularized and applied in the fields of artificial filling and soft soil foundation pits containing soft soil and foundation pits provided with anti-slide piles.
Description
Technical Field
The utility model relates to a T shape friction pile structure, concretely relates to T shape friction pile structure that is used for existing artifical pile fill (spoil) or soft soil section excavation side slope belongs to the civil engineering field.
Background
The anti-slide pile is widely applied to engineering supporting structures at present, and the anti-slide pile requires that the front surface of the upper stressed section of the anti-slide pile can generate larger friction force, and the lower anchoring section of the anti-slide pile can resist larger counter force, namely resistance force, so that the section of the anti-slide pile has better bending resistance and shearing resistance. Ensuring the stability of the slide-resistant pile.
The slide-resistant pile is a common slope retaining structure, and is mostly a regular rectangular or circular pile body. The slide-resistant pile structure balances the residual sliding force or soil pressure after the pile through the elastic resistance of the pile body and the sliding surface or the rock soil in front of the pile under the ground, so that the landslide or the side slope is kept stable.
The slide-resistant pile is used as a passive stressed retaining structure, and the exertion of the resistance of the foundation soil in front of the pile is adjusted by the lateral displacement of the pile body depending on the resistance generated by the lateral deformation of the foundation soil of the anchoring section so as to balance the backward sliding force or the soil pressure of the pile. The mechanical property of the foundation soil before the pile is reflected by the mechanical action mechanism and is a key factor for the structural stability and displacement control of the slide-resistant pile.
With the continuous expansion of construction scale, some slide-resistant piles need to be arranged on artificial filled soil or soft soil at present, and because the physical and mechanical indexes of the artificial filled soil or the soft soil are low, resistance provided by the slide-resistant pile anchoring section is very small, and the slide-resistant pile anchoring section is longer and easy to deform, and is poor in economy and stability according to the design of a conventional slide-resistant pile. In addition, for excavation side slopes, the general cross-sectional dimension of an anti-slide pile is large, hole collapse conditions exist in the construction process of part of drilled piles, hole cleaning is difficult after hole collapse, especially, hole cleaning cannot be performed after a steel reinforcement cage is placed, so that the anti-slide pile foundation is soft and weak, the anchoring length is insufficient, great potential safety hazards exist, and processing is difficult.
The technology is suitable for anti-slide piles arranged in the sections which are not compacted and filled manually and are loose and soft soil, and can also be used as a remedy measure for pile hole collapse.
SUMMERY OF THE UTILITY MODEL
The anti-slide pile anchor segment is used for solving the problems that anti-slide piles are arranged in an excavated manual filling or soft soil segment and comprise part of anti-slide piles in a soft foundation pit segment, the anti-slide pile anchor segment is overlong in a common situation, construction difficulty is high, and the anti-slide pile anchor segment is insufficient due to the fact that a hole is drilled and collapsed after an anti-slide pile reinforcement cage is placed. The utility model provides a T shape friction pile structure for excavation side slope, because artifical back-filling or weak soil physics mechanics index are low, the resistance that provides as friction pile anchor section is very little, for solving this problem, set up reinforced concrete grade beam and crossbeam at the friction pile leading edge, connect into whole with the friction pile, form T shape structure, can effectively increase resistance before the stake, T shape structure can effectively reduce moment of flexure and shear force in addition, is showing and is improving friction pile overall stability.
The technical scheme of the utility model is specifically as follows:
the T-shaped anti-slide pile structure for the excavation side slope is located at the front edge of existing manual stacking filling soil or soft soil, and comprises a cantilever section and an anchoring section from top to bottom, wherein the anchoring section is located in the manual stacking filling soil layer and embedded in the existing manual stacking filling soil or the soft soil to a certain depth, and the anchoring section and the cantilever section are drilled pile piles.
Furthermore, the T-shaped anti-slide pile structure further comprises a cross beam, and the cross beam is located below the ground on one side of the free surface.
Furthermore, the T-shaped anti-slide pile structure further comprises a ground beam, and the ground beam is positioned below the ground in front of the pile on one side of the free surface.
Further, the ground beam and the cross beam are on the same side.
Furthermore, the T-shaped anti-slide pile structure comprises a cantilever section and an anchoring section, the cross beam is parallel to the axis of the anti-slide pile and is arranged in front of the anti-slide pile next to the anti-slide pile, and the ground beam is arranged at the front edge of the anti-slide pile corresponding to each anti-slide pile.
Compared with the prior art, the utility model has the advantages of it is following:
to excavation side slope, the utility model discloses a ground beam and crossbeam rigidity is far greater than artifical fill out or soft soil, can provide the resistance that is far greater than artifical fill out or soft soil, and T shape structure atress effect and stability are better than simple increase pile length or increase stake cross-section in addition. When this structure reduces anchor section length, can show improvement friction pile stability, reduce the construction degree of difficulty, save the investment.
The structure can be popularized and applied to the field of existing artificial filling (spoil) and soft soil, including the field of arranging the anti-slide pile in the weak soil foundation pit.
Drawings
FIG. 1 is a schematic cross-sectional view of a T-shaped slide-resistant pile in an excavated section;
FIG. 2 is a schematic plan view of a T-shaped slide-resistant pile in an excavated section;
in the figure, 1-existing artificial filling (spoil) or soft soil, 2-cantilever section of the slide-resistant pile, 3-anchoring section of the slide-resistant pile, 4-beam and 5-T-shaped ground beam of the slide-resistant pile.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some examples of the present invention, not all examples. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, in the T-shaped slide-resistant pile structure for an excavation slope of this embodiment, the T-shaped slide-resistant pile structure is located at the front edge of artificial fill (spoil) or soft soil 1, that is, the side facing the void after soil excavation. The anchor section 3 is embedded in the existing artificial filling (spoil) or the loose soil, the depth of the 1 th cantilever section 2 is generally about 1 time of the length of the cantilever section 2, the 3 th cantilever section 2 of the anchor section is a bored pile, and after the anti-slide pile is poured, the soil body before the pile is excavated in a layered mode.
The T-shaped anti-slide pile structure further comprises a ground beam 5 and a cross beam 4, wherein the ground beam 5 is positioned below the ground in front of the pile on the side facing the vacant surface, and the cross beam 4 is also positioned below the ground on the side facing the vacant surface. The ground beam 5 is arranged at the same side of the cross beam 4. The reinforcing steel bars of the ground beam 5 and the cross beam 4 are crossed, namely the ground beam and the cross beam are poured and need to be connected, and the ground beam and the anti-slide pile are connected through the embedded steel bars to form a whole body so as to form a T-shaped structure.
The cross beam 4 is vertically arranged at the front edge of the slide-resistant pile and is arranged close to the slide-resistant pile, and the ground beam 5 is arranged corresponding to a plurality of slide-resistant piles, as shown in figure 2.
Because the safety of the manual hole digging pile is poor in manual filling (spoil) or loose soil, a hole is formed below the original ground by adopting the hole digging pile, after the hole is formed by drilling, the anti-slide pile is directly poured for the excavation, after the anti-slide pile is finished and reaches 75% of the design strength, the soil body in front of the pile is excavated in a segmented and layered mode, the soil retaining plate is arranged to the elevation of the field, then the ground beam and the cross beam are arranged below the elevation of the field in a segmented mode in time, the soil body in front of the pile is required to be excavated in a segmented mode, the soil body in front of the pile cannot be completely excavated at one time, then the ground beam and the cross beam reinforcement cage are arranged in time, and the ground beam and the anti-slide. Because the soil body behind the anti-slide pile can not be excavated, the cross beam and the ground beam can only be arranged on one side facing the empty surface, namely the side where the soil body needs to be excavated. The ground beam 5 and the cross beam 4 are arranged against the front edge of the slide pile.
The T-shaped slide-resistant pile structure of the embodiment is successfully applied to the Yunnan Chengjiang building side slope, a construction community is excavated on the existing artificial spoil at the working point, and a bored pile plate wall is excavated on the artificial spoil at the edge. This job site has reduced about slide-resistant pile length 6m through setting up crossbeam and grade beam, has reduced the construction degree of difficulty and risk, has reduced about reinforced concrete 20%, and pile bolck displacement is only 5.5cm, satisfies standard and side slope stability requirement.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (2)
1. The utility model provides a T shape friction pile structure for excavation side slope which characterized in that: the T-shaped anti-slide pile structure is positioned at the front edge of the existing artificial stacking or loosening soil (1) and comprises a cantilever section (2) and an anchoring section (3) from top to bottom, the anchoring section (3) is positioned on the artificial stacking and is embedded in the existing artificial stacking or loosening soil (1) for a certain depth, and the anchoring section (3) and the cantilever section (2) are both drilled pile piles;
the T-shaped anti-slide pile structure further comprises a cross beam (4) and a ground beam (5), wherein the cross beam (4) is located below the ground on one side of the free surface, and the ground beam (5) is located below the ground in front of the pile on one side of the free surface.
2. A T-shaped slide pile structure according to claim 1, characterized in that: the ground beam (5) and the cross beam (4) are arranged at the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020175835.1U CN212375881U (en) | 2020-02-17 | 2020-02-17 | T-shaped anti-slide pile structure for excavation side slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020175835.1U CN212375881U (en) | 2020-02-17 | 2020-02-17 | T-shaped anti-slide pile structure for excavation side slope |
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| Publication Number | Publication Date |
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| CN212375881U true CN212375881U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020175835.1U Active CN212375881U (en) | 2020-02-17 | 2020-02-17 | T-shaped anti-slide pile structure for excavation side slope |
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|---|---|
| CN (1) | CN212375881U (en) |
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2020
- 2020-02-17 CN CN202020175835.1U patent/CN212375881U/en active Active
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