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Repair technique for pile foundation of building

A technology for buildings and pile foundations, applied in construction, infrastructure engineering, sheet pile walls, etc., can solve problems such as prolonged construction period, rising cost, substandard quality, etc., to prevent soil spalling and collapse, strong surface corrosion resistance, Strong adhesive effect

Inactive Publication Date: 2016-05-11
王良源
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of cast-in-situ piles in the prior art that the quality is not up to standard when the hole wall collapses. In order to complete the construction, the workers have to re-dig the hole and pour, resulting in increased cost and extended construction period. , thus providing a building pile foundation repair process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The present embodiment provides a kind of building pile foundation restoration technology, comprises the steps:

[0028] S1. Excavate a side well on the side of the building pile foundation close to the non-standard part and on the side opposite to this side, so that the outer wall of the building pile foundation is on the side of the building pile foundation close to the non-standard part The side well is exposed in the side well, and the depth of the side well is controlled to be at least 50cm deeper than the lowest end of the non-standard part, and the distance between the side well on the other side and the building pile foundation of the non-standard part is no more than 50cm. greater than 50cm; in the present embodiment, since the height range of the substandard position is 5.8-6.1m, the depth of the side well is 6.15m;

[0029] S2. chisel out the non-standard part to form a chiseled space connected to the side well closest to the non-standard part, and clean up t...

Embodiment 2

[0047] This embodiment provides a building pile foundation repair process, which is an improvement on the basis of Embodiment 1, the difference is that in step S3, the repaired concrete is used to completely pour the chiseled space and the side shaft .

[0048] The advantage of this embodiment is that the poured repair concrete can be filled into the inside of the excavated space under a very large pressure, and is in close contact with the inner wall of the excavated space; The uneven support strength of the pile foundation can enhance the supporting effect of the original pile foundation.

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Abstract

The invention provides a repair technique for a pile foundation of a building. The repair technique comprises the following steps of firstly, digging a side well at one side of the pile foundation at an approximate position of a non-compliance part, enabling the depth of the side wall to be deeper than the lowermost end of the non-compliance position by at least 50cm, and enabling all non-compliance parts to be exposed; secondly, chiseling off the non-compliance parts and cleaning up the chiseled sediment; finally, pouring the side well by using repair concrete, enabling the repair concrete to completely fill and enter into a chiseling-off space and inside part of side well connected with the chiseling-off space; and after the repair concrete is completely cured, performing soil filling and compacting on the side well. According to a repair method provided by the invention, the repair concrete can be well filled inside the chiseling-off space and is in attaching contact with the inner wall of the chiseling-off space; and after the repair concrete is cured, the repair concrete can be better combined with an original pile foundation. Compared with the prior art, the repair technique has the advantages that the cost can be reduced, and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of building pile foundation repair and maintenance, in particular to a building pile foundation repair process. Background technique [0002] Pile foundation is a common foundation form in bridge engineering, which can transmit the upper bridge load into the rock foundation and provide stable support for it. As a common form of bridge pile foundation, cast-in-place piles have the advantages of no vibration, no soil compaction, and low noise during construction, so they are widely used in the field of bridge construction. [0003] When making cast-in-situ piles, it is first necessary to use a rotary drilling rig to dig holes. After the holes are dug, put them into a reinforcement cage, and finally pour concrete. Since the wall of the hole dug out by the rotary drilling rig is soil, when concrete is poured into the hole, the part of the hole wall with softer soil is easily peeled off after being soaked in wat...

Claims

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Application Information

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IPC IPC(8): E02D5/64E02D17/08C09J1/00C09J11/08C09J11/06C08L63/00
CPCE02D5/64C08J5/18C08J2363/00C08L63/00C08L2203/16C09J1/00C09J11/06C09J11/08E02D2300/002E02D2300/0045
Inventor 王良源
Owner 王良源