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Double-layer threaded steel pipe pile for coral sand foundation and construction method

A threaded steel pipe and coral sand technology, applied in infrastructure engineering, sheet pile walls, construction, etc., can solve the problems of waste of pile foundation engineering materials, settlement of pile foundation or insufficient bearing capacity of pile body, so as to reduce waste and avoid piles. Overweight, waste of resources and less pollution

Active Publication Date: 2019-10-25
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to design a double-layer threaded steel pipe pile to solve the engineering problems of pile foundation settlement or insufficient bearing capacity of the pile body during the construction process in the coral sand area, and can also solve the pile damage caused by the demolition of some temporary buildings. Waste of Foundation Engineering Materials

Method used

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  • Double-layer threaded steel pipe pile for coral sand foundation and construction method
  • Double-layer threaded steel pipe pile for coral sand foundation and construction method
  • Double-layer threaded steel pipe pile for coral sand foundation and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] see Figure 1-2 , a double-layer threaded steel pipe pile for coral sand foundation, which includes a first outer layer of threaded steel pipe 1, and a plurality of first rectangular steel sheets 3 uniformly distributed on the inner wall of the first outer layer of threaded steel pipe 1 The first inner layer of smooth steel pipe 2 is installed, and the first rectangular steel sheet 3 divides the annular cavity between the first outer layer of threaded steel pipe 1 and the first inner layer of smooth steel pipe 2 into a plurality of fan-shaped columnar first grouting areas 4. The first grouting area 4 is close to the wall of the first outer threaded steel pipe 1 to open a plurality of first grouting holes 5 along its height direction; the bottom end of the first outer threaded steel pipe 1 is provided with the first A pile of heads 9. Compared with single-layer steel pipe piles, the double-layer steel pipe piles have better safety and stability, and the annular area bet...

Embodiment 2

[0083] Such as Figure 3-4 , a double-layer threaded steel pipe pile for coral sand foundation, it includes a second outer layer of threaded steel pipe 11, the outer surface of the second outer layer of threaded steel pipe 11 is provided with threads, and the inner surface is smooth; the second outer layer The inside of the threaded steel pipe 11 is provided with an inner threaded steel pipe 12, the inner surface of the inner threaded steel pipe 12 is provided with threads, and the outer surface is smooth; an annular area is formed between the second outer threaded steel pipe 11 and the inner threaded steel pipe 12 And constitute the second grouting area 13; on the pipe walls of the second outer layer threaded steel pipe 11 and the inner layer threaded steel pipe 12, several second grouting holes 14 are opened, and the second grouting holes 14 are located between the thread lines. The inner and outer steel pipes are all threaded steel pipes. This type of steel pipe pile is a n...

Embodiment 3

[0095] A double-layer threaded steel pipe pile for coral sand foundations, which includes an outer threaded steel pipe 17, the thread on the outer threaded steel pipe 17 is segmented, and several wedges are arranged on the annular area between the two threads Mouth 23, the shape of wedge mouth 23 is consistent with pile inner wedge 21; The inside of outer layer threaded steel pipe 17 is equipped with inner layer smooth steel pipe 18 through second rectangular steel sheet 19, and the corresponding wedge on the inner layer smooth steel pipe 18 inner wall 21 high-strength spring steel sheets 20 are installed; each wedge opening 23 is correspondingly inserted with a wedge block 21, and the wedge block 21 is connected with the high-strength spring steel sheet 20 by a rivet 22. Groove, available for rivet 22 to slide on it; The end of the steel pipe pile is provided with the second pile head 24;

[0096] Further, after the steel pipe pile enters the foundation, a gear rod 25 is inse...

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Abstract

The invention provides a double-layer threaded steel pipe pile for a coral sand foundation and a construction method. The double-layer threaded steel pipe pile comprises a first outer-layer threaded steel pipe, a first inner-layer smooth steel pipe is mounted on the inner side wall of the first outer-layer threaded steel pipe through multiple uniformly distributed first rectangular steel pieces, the first rectangular steel pieces divide the annular cavity between the first outer-layer threaded steel pipe and the first inner-layer smooth steel pipe into multiple fan-shaped columnar first grouting areas, and multiple grout seeping holes are formed in the pipe wall of the first outer-layer threaded steel pipe in the first grouting areas in the height direction; a first pile head is arranged at the bottom end of the first outer-layer threaded steel pipe. The problem of waste of pile foundation engineering materials as a result of dismantling of temporary buildings can be solved. With the adoption of the designed pile, the purposes of enhancing the bearing force and saving materials can be achieved, and the purpose that piles can be recycled conveniently after the temporary buildings are dismantled can also be achieved.

Description

technical field [0001] The invention relates to the technical field of pile foundation engineering, in particular to a double-layer threaded steel pipe pile on a coral sand foundation and a construction method thereof. Background technique [0002] In the construction of buildings, bridges, ports and other projects, pile foundations are widely used. The vertical bearing capacity of pile foundation is composed of two parts: pile side friction resistance and pile tip resistance. How to make reasonable use of material strength and improve the bearing capacity of pile foundation while saving building materials is one of the important topics that researchers have been concerned about for a long time. [0003] Coral sand is a kind of calcareous sand, which has the characteristics of high organic content, low strength and easy breakage. Since calcareous sand particles will be broken under very small stress, both driven piles and cast-in-situ piles will disturb the coral sand foun...

Claims

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Application Information

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IPC IPC(8): E02D5/28E02D5/56E02D27/34E02D5/72E02D5/38E02D5/54
CPCE02D5/285E02D5/38E02D5/54E02D5/56E02D5/72E02D27/34E02D2250/0023
Inventor 刘杰杨浩宇谢晓康李运舟石谦高素芳孙涛黎照李洪亚唐洪宇张瀚何卓文李远航
Owner CHINA THREE GORGES UNIV
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