Assembly type steel underpinning device for concrete column underpinning and application thereof

Abstract

The invention discloses an assembly type steel underpinning device for concrete column underpinning and belongs to the building integral shifting technical field. The assembly type steel underpinning device mainly aims at solving the problems that the concrete column underpinning is high in cost, low in efficiency and unsafe. A pair of underpinning steel beams and a pair of connecting short beams are placed on the bilateral sides of an underpinned column respectively; four sides of a concrete column are clamped through pre-tightening bolts; part of column loads borne through a short beam which is hung in the air are transferred to the underpinning steel beams through two end portions of the short beam which is hung in the air after the concrete column and a foundation are cut off and separated from each other; loads transferred from the underpinned column are transferred to a lower rail and the foundation through travelling mechanisms which are arranged on the lower portions of the underpinning steel beams respectively. According to the assembly type steel underpinning device for the concrete column underpinning, the use is safe and reliable, block assembly is achieved, repeated use can be achieved, installation and detachment are rapid, the construction speed is high, and the concrete column underpinning structure is green and economic.

Description

technical field [0001] The invention relates to the technical field of integral displacement of buildings, in particular to an assembled steel underpinning device for concrete column underpinning and an application method thereof. Background technique [0002] The overall displacement of buildings is a special industry in the construction industry, which plays a very important role in urban reconstruction and construction. The underpinning device is an important structure in building translation. At present, the concrete column underpinning in domestic building translation projects mainly adopts cast-in-place reinforced concrete underpinning beams, and there are two types of underpinning: single-beam underpinning and double-beam underpinning. [0003] The underpinning method of the single-girder underpinning is: place a roller (or pulley, slider) on the steel plate of the lower track that has been constructed, and lay an upper track steel plate (or channel steel) on the roll...

AI Technical Summary

Problems solved by technology

[0005] Compared with the single-beam underpinning method under the column, the double-beam underpinning has the advantages of high safety and fast construction speed; however, the construction period of the above-mentioned underpinning method is limited by the growth time of concrete strength, and a certain amount of cement is required , sand, templates and other non-renewable resources

Generally speaking, the disadvantages of this kind of concrete beam are: high labor intensity, large amount of labor, high consumption of resources, and long construction period

Although this method solves the shortcomings of the above-mentioned method of underpinning beams with columns and casts concrete on site, and realizes the advantages of convenient and fast construction, short construction period and reusable steel structures, it is only suitable for underpinning of walls. Since the structure and force of the concrete column are very different from that of the wall, it cannot be applied to the underpinning of the concrete column

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