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Post-planted steel tube concrete stiffened pile reinforcing and settling-preventing foundation strengthening method

A steel tube concrete and foundation reinforcement technology, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems that affect the safety of the building itself and the surrounding environment, and the tilt of the building, so as to reduce the number of piles, reduce disturbance, reduce Effects of pollution such as noise

Inactive Publication Date: 2017-01-18
SOUTHWESTERN ARCHITECTURAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the uneven settlement exceeds a certain range, it will cause the buildings built on it to tilt, which will affect the safety of the building itself and the surrounding environment, and bring unfavorable factors to the society.

Method used

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  • Post-planted steel tube concrete stiffened pile reinforcing and settling-preventing foundation strengthening method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment one: if figure 1 As shown, the post-planting concrete-filled steel tube reinforced pile reinforcement method for anti-sinking foundation reinforcement includes the following steps:

[0030] S1. Determine the pile planting position;

[0031] S2. The whole process monitoring of the stress and deformation state of the key parts of the existing foundation and superstructure;

[0032] S3. Excavating the top surface of the existing foundation on the existing foundation;

[0033] S4. Use machines and tools to open pile-planting holes on the top surface of the existing foundation;

[0034] S5, apply reaction force anchor reinforcement in the pile hole;

[0035] S6, the pile planting equipment is in place and the hole position is calibrated;

[0036] S7. Use pile planting equipment to implant steel pipes, and weld joints until the expected depth of implantation design;

[0037] S8, adjust the steel pipe length;

[0038] S9. The steel pipe is poured with micro-ex...

Embodiment 2

[0042] Embodiment 2: The difference between this embodiment and the embodiment is that: in step S3, the existing foundation is expanded on the existing foundation; holes for pile planting are reserved in expanding the existing foundation; holes for pile planting are pre-embedded Reaction anchor.

[0043] The post-planted concrete steel pipe piles constructed by this method greatly reduce the unfavorable disturbance of the reinforcement construction to the existing building foundation and foundation, reduce the noise and other pollution of surrounding buildings and the environment, and the post-planted steel pipe piles can have a bearing capacity comparable to that of the existing The building load realizes organic conversion, effectively combines with the bearing capacity of the existing foundation, reduces the number of piles, and realizes the purpose of reinforcing and anti-settling reinforcement of the foundation.

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Abstract

The invention discloses a post-planted steel tube concrete stiffened pile reinforcing and settling-preventing foundation strengthening method. The post-planted steel tube concrete stiffened pile reinforcing and settling-preventing foundation strengthening method includes the following steps that firstly, a pile planting part is determined; secondly, the whole process of the stress and deformation states of an existing foundation and a key part of an upper structure is monitored; thirdly, an existing foundation top face is dug on the existing foundation; fourthly, a pile planting hole is formed in the existing foundation top face through a machine tool; fifthly, a counterforce anchor bar is constructed in the pile planting hole; sixthly, a pile planting device is arranged in situ and is used for correcting the position of the hole; seventhly, the pile planting device is used for implanting a steel tube, and the steel tube is welded segment by segment till the steel tube is implanted to the designed preset depth; eighthly, the length of the steel tube is adjusted; and the steel tube is filled with micro-expansion concrete, and compact vibration is conducted; and tenthly, the implanted concrete stiffened pile is subjected to re-pressing and pile connecting. The post-planted steel tube concrete stiffened pile reinforcing and settling-preventing foundation strengthening method has the beneficial effects that the reinforcing construction difficulty of the existing foundation is lowered, the construction space limitation is overcome, fast control over settlement of the existing foundation is achieved, differential deformation is prevented from being developed continuously, reinforcing is achieved, and energy conservation and environment friendliness are achieved.

Description

technical field [0001] The invention relates to a reinforcement method for reinforcing and anti-sinking foundation with post-planted steel pipe concrete strength piles. Background technique [0002] When building a building on the foundation, affected by the upper load and its distribution, surrounding buildings (structures), external natural environment and other factors, it will cause uneven settlement of the foundation to a certain extent. When the uneven settlement exceeds a certain range, it will cause the buildings built on it to tilt, which will affect the safety of the building itself and the surrounding environment, and bring unfavorable factors to the society. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the existing pile foundation construction technology, provide a convenient construction, break through the construction space limit, realize the rapid reinforcement of existing foundations and piles, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/48E02D5/38
CPCE02D27/48E02D5/38
Inventor 康景文邓正宇王君莫振林余力祖德权周其建汪凯牛良陈永生
Owner SOUTHWESTERN ARCHITECTURAL DESIGN INST
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