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A construction method of cast-in-place pile

A construction method and cast-in-place pile technology, which are applied in the field of construction foundation engineering, can solve the problems of low work efficiency, high labor intensity of workers breaking pile heads, etc., and achieve the effects of cost saving, convenient construction and improvement of construction efficiency.

Inactive Publication Date: 2016-04-27
KUNMING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This traditional cast-in-situ pile construction method is restricted by the main reinforcement, and the labor intensity of the workers breaking the pile head is very high, and the work efficiency is very low

Method used

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  • A construction method of cast-in-place pile
  • A construction method of cast-in-place pile
  • A construction method of cast-in-place pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see Figure 1 to Figure 4 , a construction method for cast-in-situ piles, the construction steps are as follows:

[0032] (1) Excavate the ground: Excavate the original ground or the bottom of the foundation trench, and the excavation depth should ensure that all the piles in the part to be super-filled are above the excavated ground and the depth of the top of the pile embedded in the cap should be reserved;

[0033] (2) Form pile holes: bury the casing with flange I on the construction ground formed after excavation, and coat the inner wall of the casing with concrete isolating agent. After the casing is installed, ensure that the elevation of the top surface of the casing is Design the elevation of the pile top or within the allowable deviation range of the specification, then use the casing as the guide to drill holes, and form pile holes that meet the design requirements;

[0034] (3) Install the lower sleeve: install the lower sleeve with flange II and the wall t...

Embodiment 2

[0041] Example 2: see Figure 1 to Figure 4 , a construction method for cast-in-situ piles, the difference from Example 1 is that in the step (7), the removal of the upper sleeve is performed after the pile body concrete has been cured for a period of time.

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Abstract

The invention relates to a construction method of cast-in-place piles. By excavating the ground, forming pile holes, installing the lower sleeve, placing the steel cage, bending the main reinforcement, installing the upper sleeve, pouring concrete, and hanging the conduit, the concrete of the pile body is poured continuously until the concrete surface rises to the top surface of the upper sleeve Flush, then pull out the conduit, remove the upper sleeve, break part of the overfilling pile head, straighten the main reinforcement, remove the lower sleeve, pull out the casing and other steps to complete the construction of the cast-in-place pile. The invention provides a new method for construction of cast-in-place piles, which can prevent the steel cage from shifting or floating during concrete pouring. The construction is convenient, which greatly reduces the labor intensity of the workers in breaking the pile head construction, and improves the construction efficiency.

Description

technical field [0001] The invention relates to the technical field of building foundation engineering, in particular to a construction method of cast-in-situ piles. Background technique [0002] Cast-in-situ piles have the advantages of no vibration, no soil extrusion, and low noise during construction, and have been widely used in various civil engineering projects. In the process of pouring piles, the strength of the pile head is difficult to guarantee due to the return of the cement slurry and the inevitable fall of the upper part of the pile body into soil and impurities during the pouring process. Therefore, it is necessary to overfill a part of the pile body and break it later. That is, the pile head is broken. The traditional cast-in-situ pile construction process can be summarized as: site leveling, surveying and setting out, burying the casing, drilling and clearing the hole, placing the steel cage, hanging the conduit, pouring concrete, removing the conduit, exca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/38
CPCE02D5/385
Inventor 朱维伟谭洋洋
Owner KUNMING UNIV