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A method of repairing and strengthening raft foundation

A raft foundation and formwork technology, applied in the field of building reinforcement, can solve problems such as overload settlement damage, and achieve the effect of solving overload settlement damage, ensuring stability, stable and reliable support

Active Publication Date: 2022-05-06
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0005] Aiming at some problems existing in the prior art, the present invention provides a method for repairing and strengthening the raft foundation. The reinforcement method has a short construction period, quick results and simple construction technology, and can solve the problem of the raft foundation being damaged by overloading and settlement, and can ensure The reinforced raft foundation has good bearing capacity and stable service life, which can effectively meet the requirements of raft foundation function and building safety level

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  • A method of repairing and strengthening raft foundation
  • A method of repairing and strengthening raft foundation
  • A method of repairing and strengthening raft foundation

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Embodiment Construction

[0043] The present invention will be further described below.

[0044] Such as Figure 1 to Figure 7 As shown, a method for repairing and strengthening a raft foundation includes the following steps:

[0045] Step 1, jacking and supporting the frame beams 7 around the frame column 6 above the overloaded settlement damage site;

[0046] Select the support position that ensures that the frame column 6 can rise, and the frame beam 7 and the base plate will not undergo secondary damage; vertical steel pipes 14 are arranged below the support positions on both sides of the frame column 6 on each frame beam 7, The upper end of the steel pipe 14 is supported on the lower end surface of the frame beam 7, and a jack 12 is installed between the lower end of the steel pipe 14 and the ground;

[0047] Two steel corbels 11 are fixedly connected to the opposite sides of the middle or upper part of the frame column 6, and two steel frames are arranged below the two steel corbels 11, and the...

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Abstract

A method for repairing and strengthening a raft foundation, using steel pipes and jacks to support frame beams around frame columns; using steel frames, steel corbels, and jacks to support frame columns; and arranging laser rangefinders around the frame columns on the ground ; Slowly press up each jack to make the frame columns and frame beams rise to the set height synchronously; open multiple grouting holes on the original raft foundation below the frame columns, and inject grouting holes into the settlement cracks inside the original raft foundation and the bottom plate of the foundation respectively. Carry out grouting in the suspended space; plant bars and tie steel bars on the original raft foundation; heighten the height of the original raft foundation to form the heightened part of the raft; repair the raft foundation and frame beams; concrete for curing; jack unloading, removal of steel pipes, steel frames and steel corbels. This method can solve the problem of settlement damage of the raft foundation caused by overloading, and can ensure that the repaired and reinforced raft foundation has good bearing capacity and stable service life.

Description

technical field [0001] The invention belongs to the technical field of building reinforcement, and in particular relates to a method for repairing and reinforcing a raft foundation. Background technique [0002] With the rapid development of science and technology and the decrease of construction land, high-rise buildings and super high-rise buildings have emerged as the times require. However, no matter in high-rise building construction or renovation and reinforcement, foundation design occupies an important position in the whole high-rise building design. The raft foundation is widely used due to its advantages of good integrity, high bending rigidity, and resistance to uneven loads of the superstructure and uneven settlement of the foundation. As a part of the building structure, the foundation bears all the loads transmitted by the superstructure, and the design quality of the foundation will directly affect the safety of the building. This has higher and higher requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D37/00E02D27/01E02D33/00
CPCE02D37/00E02D27/01E02D33/00E02D2300/0029E02D2300/002E02D2250/003E02D2600/20
Inventor 李庆涛夏浩然刘普陈建设柴英鹏屈路阳刘萌朱明权王浩徐成袁广林黄晨
Owner CHINA UNIV OF MINING & TECH
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