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Stiff composite pile construction process

A construction technique and composite pile technology, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as difficult to meet requirements and large impact, and achieve the effects of reliable quality, convenient construction, and fast pile formation

Pending Publication Date: 2021-08-10
胡海滨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of stiff composite pile construction technology, to solve the above-mentioned background technology because the geological conditions of the construction site are more and more complex, so there are certain defects in the traditional stiff composite pile construction technology , for example, there are the following defects in deep filling sites: it is greatly affected by construction waste and other miscellaneous fillings, and the traditional mixing or rotary spraying hole-forming process is difficult to meet the requirements

Method used

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  • Stiff composite pile construction process
  • Stiff composite pile construction process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] S1: Carrier pile construction

[0032] a. The carrier pile adopts φ500mm cement-soil mixing pile, and the full casing follows the impact to form a hole. The hole is filled with cement mortar. The cement mixing amount in the empty drilling area is 9%, and the cement mixing amount in the effective pile length area is 17%;

[0033] b. The carrier construction is completed and the pile driver is in place.

[0034] S2: Carrier pile driver pulls up the casing

[0035] S3: Lower the prefabricated pile body, and send the pile to the design elevation by static pressure or hammering

[0036] a. The prefabricated pile body adopts prestressed concrete pipe pile, the effective pile length is 42m, and the prefabricated pile body is constructed within 6 hours after the carrier construction is completed;

[0037] b. After the stirring pile machine moves the machine to construct the next carrier pile, the static press is positioned and straightened, and the center error of the positio...

Embodiment 2

[0046] S1: Carrier pile construction

[0047] a. The carrier pile adopts φ700mm cement-soil mixing pile, and the full casing follows the impact to form a hole. The hole is filled with cement mortar. The cement mixing amount in the empty drilling area is 10%, and the cement mixing amount in the effective pile length area is 19%;

[0048] b. The carrier construction is completed and the pile driver is in place.

[0049] S2: Carrier pile driver pulls up the casing

[0050] S3: Lower the prefabricated pile body, and send the pile to the design elevation by static pressure or hammering

[0051] a. The prefabricated pile body adopts prestressed concrete pipe pile, the effective pile length is 42m, and the prefabricated pile body is constructed within 6 hours after the carrier construction is completed;

[0052] b. After the stirring pile machine moves the machine to construct the next carrier pile, the static press is positioned and straightened, and the center error of the positi...

Embodiment 3

[0061] S1: Carrier pile construction

[0062] a. The carrier pile adopts φ900mm cement-soil mixing pile, and the full casing follows the impact to form a hole. The hole is poured with fine stone concrete. The cement mixing amount in the empty drilling area is 9-11%, and the cement mixing amount in the effective pile length area is twenty one%;

[0063] b. The carrier construction is completed and the pile driver is in place.

[0064] S2: Carrier pile driver pulls up the casing

[0065] S3: Lower the prefabricated pile body, and send the pile to the design elevation by static pressure or hammering

[0066] a. The prefabricated pile body adopts prestressed concrete pipe pile, the effective pile length is 42m, and the prefabricated pile body is constructed within 6 hours after the carrier construction is completed;

[0067] b. After the stirring pile machine moves the machine to construct the next carrier pile, the static press is positioned and straightened, and the center er...

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Abstract

The invention discloses a stiff composite pile construction process. The stiff composite pile construction process comprises the following steps that S1, carrier pile construction is conducted, specifically, a, a cement-soil mixing pile with the diameter of phi 500-900 mm is adopted for a carrier pile, full pile casing follow-up impact hole forming is conducted, cement mortar or fine aggregate concrete is poured into a hole, the cement doping amount in an empty drilling area is 9%-11%, and the cement doping amount in an effective pile length area is 17%-21%; and b, carrier construction is completed; S2, a pile casing is pulled out by a carrier pile machine; and S3, a precast pile body is put down, and the pile is conveyed to the designed elevation in a static pressure or hammering mode, a, the precast pile body adopts a prestressed concrete pipe pile, the effective pile length is 42 m, and the precast pile body is constructed within 6 h after carrier construction is completed. According to the stiff composite pile construction process, construction is convenient, the secondary compaction and reinforcement effect on filling soil around a pile body is achieved, the physical and mechanical properties of a soil body around the pile are effectively improved, the stiff composite pile construction process can adapt to complex geological conditions such as deep filling soil, the construction process is different from a conventional soil compaction process, and the influence on the surrounding environment is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of composite pile construction, in particular to a construction technique of a rigid composite pile. Background technique [0002] With the continuous development of urban construction, there are more and more construction projects under complex geological conditions such as deep fill and collapsible soil. As a foundation form, the stiffness composite pile has more and more advantages under similar geological conditions. more and more obvious. [0003] The stiff composite pile is composed of an outer pile body and an inner pile core. The soil of the pile body is reinforced to improve the mechanical properties of the undisturbed soil, and then the inner pile core is implanted to form a composite pile body. [0004] Due to the increasingly complex geological conditions of the construction site, there are certain defects in the traditional rigid composite pile construction technology. It is difficult to meet ...

Claims

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Application Information

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IPC IPC(8): E02D5/50E02D5/46
CPCE02D5/46E02D5/50E02D2300/0006E02D2300/002E02D2300/0021
Inventor 李龙胡海滨邓亚光李双庆连晓东张云水耿玉萍
Owner 胡海滨
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