Wall punching underpinning device and use method thereof

Abstract

The invention relates to the building construction technology field, and particularly discloses a wall punching underpinning device and a use method thereof. The wall punching underpinning device comprises stand columns, horizontal braces and cross braces, wherein at least two groups of the vertical columns are vertically arranged, jacks are respectively installed at bottoms of the stand columns,an anti-slip mat layer is arranged between contact surfaces of each jack and each vertical column, each horizontal brace is vertically installed at the top of each group of the stand columns, each cross brace is vertically installed at the top of each horizontal brace, and a plurality of the cross braces are arranged. By arranging the horizontal braces and the cross braces, the wall punching underpinning device effectively enlarges the force-bearing area of a load bearing wall, evenly distributes pressure to the horizontal braces and the cross braces, can adjust height demands of the underpinning device by using the jacks, effectively solves remolding problems of the load-bearing wall, and has the characteristics of being simple in structure, convenient to assemble, reusable and the like.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a wall opening underpinning device and a using method. Background technique [0002] With the development of social economy, the original space layout of some old buildings cannot meet people's use requirements, and reinforcement design and renovation are required, such as requiring small-space offices or dormitories to be changed into large-space restaurants or meeting rooms Wait. Most of the existing old buildings are brick-concrete structures. In order to realize the requirement of large bays, the original load-bearing walls need to be demolished. [0003] During the reconstruction process of the ground floor or multi-storey large space structure of traditional houses, the method of designing reinforced concrete underpinning beams on the ground floor or slab bottom is often used for the reconstruction and underpinning design. However, this design and constructi...

AI Technical Summary

Problems solved by technology

However, this design and construction method requires that the construction steps at each stage must be strictly unified, and it is extremely prone to abnormalities in the verticality of the wall and the level of cracks before the concrete underpinning beam is poured, and after the concrete is poured, the walls, underpinning beams, etc. Component cracks and deflections exceed code limits

This is mainly because when the concrete underpinning beam is set and poured, due to the heterogeneity of the concrete material and the strength does not fully reach the design strength, it is easy to cause the wall to be damaged when the upper wall load is transferred to the underpinning beam. Cracking and excessive deflection of beams lead to delays in underpinning procedures, and in severe cases lead to interruption or failure of wall renovation construction

[0004] At the same time, different house renovations require underpinning devices of different heights. The assembly or adjustment of some devices is very complicated. The assembly and adjustment of the devices before construction takes a lot of time, which affects the construction efficiency.

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