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Soil pile contact surface friction control type precast concrete pile and pile driving method

A precast concrete, contact surface technology, applied in sheet pile wall, construction, infrastructure engineering, etc., can solve problems such as cost increase, and achieve the effect of low implementation cost, overcoming insufficient lateral friction, and easy implementation.

Active Publication Date: 2019-04-12
CHINA NUCLEAR IND HUAXING CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the soil density in the soft soil foundation is too small, it is necessary to drive longer prefabricated piles, or even drive multiple prefabricated piles into the ground end-to-end, and exchange the load with length, but the excessively long pile foundation will increase the cost. It is necessary to control the friction force of the contact surface between the soil and the pile to ensure that the prefabricated pile has sufficient load-bearing capacity

Method used

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  • Soil pile contact surface friction control type precast concrete pile and pile driving method
  • Soil pile contact surface friction control type precast concrete pile and pile driving method
  • Soil pile contact surface friction control type precast concrete pile and pile driving method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] like Figure 1 to Figure 3 As shown, a soil pile contact surface friction control type prefabricated concrete pile includes a pile body 1, the pile body is a hollow circular tube structure, and the hollow passes through the axis line of the pile body 1.

[0028] The peripheral surface of the pile body 1 is evenly arranged with an array composed of a plurality of wedge-shaped block groups.

[0029] Described wedge block group comprises first wedge block 2 and second wedge block 3, and two wedge blocks are all arranged along the axial direction of pile body 1, as figure 2 As shown, the bottom surface of the first wedge-shaped block 2 is provided with four nail holes 5, and the bottom surface of the second wedge-shaped block 3 is provided with a nail hole. Towards the outside of the pile body 1, and the big ends of the two wedges are opposed together, wherein the first wedge 2 is arranged above the second wedge 3, that is, when piling, the big ends of the first wedge 2 f...

Embodiment 2

[0036] like figure 1 As shown, a soil pile contact surface friction control type prefabricated concrete pile includes a pile body 1, the pile body 1 is a hollow circular tube structure, and the hollow passes through the axis line of the pile body 1.

[0037] The peripheral surface of the pile body 1 is evenly arranged with an array of a plurality of wedge-shaped block groups, and the wedge-shaped block groups include a first wedge-shaped block 2 and a second wedge-shaped block 3, and both wedge-shaped blocks are arranged along the axis of the pile body 1. The two wedge-shaped blocks are respectively attached to the pile body 1 through connectors, the slopes are all facing the outside of the pile body 1, and the big ends of the two wedge-shaped blocks are opposed to each other, as in figure 2 As shown, wherein, the first wedge block 2 is arranged above the second wedge block 3, that is, when piling, the big end of the first wedge block 2 faces downward.

[0038] The first wed...

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Abstract

A soil pile contact face friction control type precast concrete pile comprises a pile body and a plurality of wedge-shaped block sets arranged on the surface of the circumferential side of the pile body. Each wedge-shaped block set comprises a first wedge-shaped block and a second wedge-shaped block, wherein the two wedge-shaped blocks are arranged in the axial direction of the pile body, the bottom faces are attached to the pile body, the slopes face the outer side of the pile body, and the large ends of the two wedge-shaped blocks abut against each other; and the first wedge-shaped block is arranged above the second wedge-shaped block, that is, during piling, the large end of the first wedge-shaped block is downward. The second wedge-shaped blocks and connecting parts of the second wedge-shaped blocks of the pile body are made from degradable materials, or the connecting strength of the first wedge-shaped blocks and the pile body is designed to be larger than that of the second wedge-shaped block and the pile body; and therefore, the second wedge-shaped blocks are easy to degrade or can be easily separated from the pile body under acting force, the large ends of the first wedge-shaped blocks can be in direct contact with soil after the second wedge-shaped blocks are degraded or separated to bear upward bearing force of the soil on the first wedge-shaped blocks, and the defect that side friction force provided by soft foundation soil is insufficient is overcome.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a friction-controlled prefabricated concrete pile on the contact surface of soil piles and a pile driving method. Background technique [0002] Prefabricated piles of reinforced concrete structures are often used in foundations. In the case of soft soil foundations, prefabricated piles are driven into the ground, and the pile foundation needs to bear the load of the building through the lateral friction formed between the pile body and the soil. If the soil density in the soft soil foundation is too small, it is necessary to drive longer prefabricated piles, or even drive multiple prefabricated piles into the ground end-to-end, and exchange the load with length, but the excessively long pile foundation will increase the cost. It is necessary to control the friction force of the contact surface between the soil and the pile to ensure that the prefabricated pile has suffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/30E02D7/02
CPCE02D5/30E02D7/02
Inventor 刘作峰周小丽龚振斌陈清华林武
Owner CHINA NUCLEAR IND HUAXING CONSTR