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Method for consolidating existing building foundation

It is a technology for strengthening existing buildings and foundations, which is applied in the fields of architecture, infrastructure engineering, and soil protection. It can solve the problems that the upper structure cannot be provided, the design theory does not conform to the design theory, and the reinforcement is not easy. It achieves low hydration temperature rise, Effect of reducing dust pollution and reducing usage

Inactive Publication Date: 2012-07-04
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned methods cannot provide a large reaction force to the upper structure, and the foundation soil is loess, the foundation is a strip foundation or an independent foundation under the column, and the reinforcement of the existing building foundation with a small number of floors may be difficult to construct or not in design theory. Conform to the characteristics of the original building structure and foundation, or have the disadvantage of high cost

Method used

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  • Method for consolidating existing building foundation
  • Method for consolidating existing building foundation
  • Method for consolidating existing building foundation

Examples

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Effect test

example 1

[0031] The existing building to be reinforced in this embodiment is a one-story building with a large space at the bottom, with an independent foundation under the column, and the foundation is buried at a depth of 1.80m. Due to the subsidence of the foundation, the entire building will sink.

[0032] Step 1. After field investigation, identification and analysis, the construction parameters are determined as follows: 24 piles are used, 2 piles under each foundation, the distance between the 2 piles under each foundation is 1400mm, and the pile hole is d=600mm , the pile length is 11m;

[0033] Step 2. According to the construction parameters determined in Step 1, excavate a 1-2m wide construction trench at the foundation of the existing building, and manually dig holes to form pile holes, inspect the soil quality, and clean the debris at the bottom of the hole;

[0034] Step 3: The stones used for the pile body are 2-20 cm block stones, the concrete strength is C20, and the b...

example 2

[0038] In this embodiment, the required reinforced building is a single-story bent frame structure with an independent foundation under the column, and the foundation burial depth is 2.10 m. After the building was used, it was found that there were cracks in the wall and the ground, and there was a tendency to expand. In order to prevent the cracks in the ground and walls of the plant from continuing to develop and cause damage to the structure, effective reinforcement measures should be taken.

[0039] Step 1. After field investigation, identification and analysis, the construction parameters are determined as follows: 50 piles are used, 2 piles under each foundation, the distance between 2 piles under each foundation is 1000mm, and the pile hole is d=800mm , The pile length is 13m.

[0040] Step 2, excavating construction grooves and manually digging holes to form pile holes;

[0041] Step 3: Use pebbles with a particle size of 2-20 cm for the pile body, the concrete streng...

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Abstract

The invention belongs to the field of consolidating existing building foundation, in particular relates to a method for consolidating the existing building foundation of which the upper structure cannot provide large counter-force. In the method, riprap concrete is adopted as a main material of a pile; holes are dug manually; and block stones or cobbles with the diameter of between 2 and 20cm arethrown into the dug holes in a mechanical or manual mode, and the poured concrete can be compactly filled in gaps generated in a block stone settling path at any time so as to form a compact riprap concrete pile with higher strength. Therefore, the pile end can be placed in a better bearing stratum on the deep part of the foundation, and complete or partial load of a building is transferred to the stratum to fulfill the aims of reducing additional stress of foundation soil under the substrate, reducing settlement and consolidating.

Description

technical field [0001] The invention belongs to the field of foundation reinforcement of existing buildings, in particular to a method for reinforcing foundations of existing buildings with artificially dug holes and riprap concrete piles. Background technique [0002] In existing building foundation reinforcement projects, the methods often used include foundation reinforcement and reinforcement method, foundation bottom area method, deepening foundation method, anchor static pressure pile method, high-pressure jet grouting method, lime-soil compaction pile method, etc. method, root pile method, pit static pressure pile method, lime pile method, etc. The above-mentioned methods cannot provide a large reaction force to the upper structure, and the foundation soil is loess, the foundation is a strip foundation or an independent foundation under the column, and the reinforcement of the existing building foundation with a small number of floors may be difficult to construct or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/34E02D3/12
Inventor 胡长明蒋明王静王丽芳车佳玲林源朱艳
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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