A self-precipitating prestressed anti-slide pipe pile and its construction method

A technology of prestressed pipe piles and construction methods, which is applied in excavation, sheet pile wall, foundation structure engineering, etc. Deterioration and other problems, to achieve the effect of reducing manual work intensity, improving safety and long-term effectiveness, and shortening work time

Active Publication Date: 2020-05-05
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after the prestressed anti-slide pipe piles are installed in the landslide area, although the sliding surface has been reinforced, the influence of the water body on the soil environment near the sliding surface cannot be changed. The water body is blocked and pooled near the sliding surface, which deteriorates the soil environment , which reduces the stability of the soil on the sliding surface, resulting in the use of anti-slide piles not reaching the expected effect

Method used

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  • A self-precipitating prestressed anti-slide pipe pile and its construction method
  • A self-precipitating prestressed anti-slide pipe pile and its construction method
  • A self-precipitating prestressed anti-slide pipe pile and its construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as Figure 1 to Figure 3 As shown, the self-prestressed anti-slide pipe pile 100 provided in this embodiment includes: a prestressed pipe pile 110 and a self-pumping and drainage pipeline 120 .

[0043] The prestressed pipe pile 110 adopts a circular hollow prestressed high-grade prefabricated concrete structure, see image 3 Specifically, it can be prefabricated by making a reinforcement cage through vertical prestressed steel bars 110a and spiral stirrups 110b, and then pouring concrete 110c. The prestressed steel bar 110a is prestressed by the pretensioning method, and the bending moment and shear capacity of the prestressed pipe pile 110 are calculated and determined according to the landslide thrust and earth pressure near the stratum sliding zone, and the spiral stirrup 110b is configured. If necessary, further reinforcing steel bars can be configured.

[0044] see figure 1 , the prestressed pipe pile 110 has an anchor section 111 , a permeable section 112...

Embodiment 2

[0049] Such as Figure 4 with Figure 5 As shown, the self-falling prestressed anti-slide pipe pile 100 provided in this implementation, the parts involved and the position and connection relationship between the parts are the same as those in the first embodiment, the difference is that at the end of the anchoring section 111 There is a picket head 115 at the top, and the picket head 115 can be integrally formed with the prefabrication of the prestressed pipe pile 110, or it can be realized through later installation and fixation.

[0050] The prestressed pipe pile 110 provided in this implementation, because it has a sharp pile head 115, can be directly constructed in the environment of ordinary ground density by adopting the embodiment of static pressing or hammering. The engineering equipment used for striking is all existing equipment and can be used directly. The following construction methods are used for specific construction:

[0051] The first step is to use the ex...

Embodiment 3

[0054] Such as Figure 6 to Figure 10 As shown, the self-falling prestressed anti-slide pipe pile 100 provided in this embodiment, the parts involved and the position and connection relationship between the parts are the same as those in the first embodiment, the difference is that the implementation needs to be checked before use. The prestressed pipe pile 110 provided in Example 1 undergoes further pretreatment to adapt to the embodiment of placing the pile after pre-drilling.

[0055] The pretreatment of pipe piles may include: closing the end of the anchoring section 111, and setting the lower grouting pipe 116, the filter pipe 117 and the upper grouting pipe on the outside of the anchoring section 111, the permeable section 112 and the cantilever section 113 respectively. Pipe 118, etc., its purpose is to facilitate the efficient and quick placement of prestressed pipe piles 110 in the environment of relatively dense ground, and at the same time ensure that the prestresse...

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Abstract

The invention discloses a self-precipitation prestress antiskid pipe pile. The self-precipitation prestress antiskid pipe pile comprises a prestress pipe pile, and further comprises a self-pumping anddrainage pipeline, wherein the prestress pipe pile is provided with an anchoring segment, a permeable segment and a cantilever segment, which are sequentially connected in the axial direction, a plurality of permeable holes are formed in a pipe wall of the permeable segment, one end of the self-pumping and drainage pipeline is located in a pipe cavity of the anchoring segment, and close to one end, far away from the permeable segment, of the anchoring segment, and the other end of the self-pumping and drainage pipeline is extended from pipe cavities of the permeable segment and the cantileversegment to the exterior of the prestress pipe pile so as to pump and drain a water body in the prestress pipe pile. The invention simultaneously provides a construction method matched with the self-precipitation prestress antiskid pipe pile. The self-precipitation prestress antiskid pipe pile and the construction method thereof aim at achieving an automatic precipitation function, rapidly improving landslide and roadbed disease environments, improving safety and long term effectiveness after landslide and roadbed diseases are treated, timely exerting effect, and then achieving rapid, safe andeffective treatment of diseases such as the landslide and roadbed slippage.

Description

technical field [0001] The invention relates to the technical field of disease treatment such as landslides and subgrade slips, in particular to a self-precipitating prestressed anti-slide pipe pile and a construction method thereof. Background technique [0002] Prestressed pipe piles, referred to as pipe piles, are prefabricated concrete members of a slender hollow cylinder with equal cross-sections made by professional manufacturers using pretensioning and prestressing techniques. During infrastructure construction, hammering or static pressure The method of sinking it into the ground and strengthening the surrounding foundation has the advantages of rapid construction, high bearing capacity, and stable quality, especially the prestressed pipe pile has good bending resistance, so it has been used in recent years. It is used as supporting piles in foundation pit support, and also used as anti-slide piles in the treatment of landslides, roadbed slippage and other diseases. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/20E02D5/24E02D5/58E02D13/08
CPCE02D5/24E02D5/58E02D13/08E02D17/20
Inventor 李海平马小斐阎宗岭徐峰单荣相徐建强苟栋元刘中帅柴贺军唐胜传
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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