Raft foundation repairing and reinforcing method

Abstract

The invention discloses a raft foundation repairing and reinforcing method. The raft foundation repairing and reinforcing method comprises the steps that frame beams on the periphery of frame columns are supported through steel pipes and jacks; steel frames, steel corbels and the jacks are used for supporting the frame columns; laser range finders are arranged on the ground around the frame columns; each jack is slowly pressed to enable the frame columns and the frame beams to synchronously rise to a set height; a plurality of grouting holes are formed in the part, below the frame columns, of an original raft foundation, and grouting operation is carried out on settlement cracks in the original raft foundation and the suspended space of a foundation bottom plate; steel bar planting and steel bar binding are carried out on the basis of an original raft plate; the original raft foundation is heightened to form a raft heightened part; the raft foundation and the frame beam are repaired; the poured concrete is cured; and the jacks are unloaded, and the steel pipes, the steel frames and the steel corbels are removed. By means of the method, the problem that the raft foundation is settled and damaged due to overload can be solved, and it can be ensured that the repaired and reinforced raft foundation has the good bearing capacity and the 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...

AI Technical Summary

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

Images