Foundation pile top quick reinforcement method

A pile top and foundation pile technology, which is applied in the test of foundation structure, foundation structure engineering, construction, etc., can solve the problems of long time, affecting the construction period and low strength of the pile top structure, so as to achieve the effect of saving construction period.

Inactive Publication Date: 2017-08-15
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a quick reinforcement method for pile tops of foundation piles, the main purpose of which is to solve the technical problems that the pile top treatment method takes a long time to affect the construction period and the pile top structure strength is not high when testing foundation pile bearing capacity

Method used

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  • Foundation pile top quick reinforcement method
  • Foundation pile top quick reinforcement method

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Experimental program
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Effect test

Embodiment 1

[0022] Remove the concrete above the design elevation of the prefabricated pile (PHC pile), and use the area from the design elevation to the 50cm position of the prefabricated pile body as the reinforcement section 1 of the prefabricated pile. A plurality of steel bars tightly attached to the outer surface of the side wall, the diameter of the steel bars is 6mm, and the two ends of each steel bar are welded to form a closed ring bar 3, and the distance between the ring bars 3 is about 50mm. The ring bars 3 are close to parallel to each other, and the gap between the pile top and the pile body and the gap between the ring bars and the pile body are smoothed with structural glue. The pile top, pile body and ring bars form a whole to facilitate the foundation pile Bearing capacity detection, the processed prefabricated pile heads are as follows: figure 1 shown.

Embodiment 2

[0024] Remove the concrete above the longitudinal reinforcement (main reinforcement) of the cast-in-place pile, and remove the protective layer concrete from the top of the longitudinal reinforcement (main reinforcement) of the cast-in-place pile to the first stirrup of the pile body and the outer periphery of the longitudinal reinforcement (main reinforcement) to form the reinforcement section of the cast-in-place pile 1. Along the outer surface of the side wall of the reinforcement section 1, a plurality of steel bars that are closely attached to the outer surface of the side wall are tightly wrapped in a circumferential direction. The diameter of the steel bars is 8mm, and the joints at both ends of each steel bar are welded to form a closed ring bar 3. The distance between the ring bars 3 is about 50mm, and the ring bars 3 are close to parallel to each other. Use the grouting material to smooth the gap between the pile top and the pile body and the gap between the ring bars ...

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Abstract

The invention discloses a quick reinforcement method for pile tops of foundation piles, and relates to the technical field of construction engineering. The method of the present invention comprises the following steps: removing uncompacted or redundant concrete at the top of the pile, reserving a reinforcement section between the pile top and the pile body; The two ends of each steel bar are welded to form a ring bar; the top of the pile is smoothed with structural glue or grouting material, and the gap between the steel bar and the pile body is filled. The top of the pile, the body of the pile And the ring reinforcement forms an integral body for testing the bearing capacity of foundation piles. The method of the invention can shorten the entire construction period by reinforcing the pile top, and the structural strength of the pile head after treatment is relatively high.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a rapid reinforcement method for pile tops of foundation piles. Background technique [0002] The bearing capacity test of foundation piles is to apply vertical pressure, vertical uplift force or horizontal thrust on the top of the pile step by step, and observe the settlement, uplift displacement or horizontal displacement of the pile top over time, so as to determine the corresponding vertical compression resistance of the single pile. Test methods for bearing capacity, vertical uplift capacity of a single pile, or horizontal bearing capacity of a single pile. The main purpose is to provide the design basis for the bearing capacity of the project, to provide the basis for the inspection and evaluation of the construction quality of the foundation pile project, to select the best technical parameters for the foundation pile construction, or to propose a design b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 杜思义许书信范玉磊陈一汉
Owner ZHENGZHOU UNIV
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