Movable arm type tower crane underframe ballasting foundation and construction method

Abstract

The invention relates to a movable arm type tower crane underframe ballasting foundation and a construction method. The foundation is arranged at the upper portion of a basement and comprises a cross-shaped steel beam used for installing a tower crane underframe, and a tower crane support cushioned at the lower portion of the cross-shaped steel beam, the tower crane support comprises a reinforcedconcrete beam used for placing the cross-shaped steel beam and supporting columns used for supporting the reinforced concrete beam, the supporting columns are frame columns arranged at the crossed positions of transverse frame beams and longitudinal frame beams of the basement in a supported mode, the frame columns extend out of the ground elevation and then are fixed to the bottom of the reinforced concrete beam, and a plurality of concrete column piers used for fixing the reinforced concrete beam to a basement roof are fixed to the bottom of the reinforced concrete beam at intervals. According to the foundation and the method, a basement structure is used for fixing and supporting the tower crane support, meanwhile, a traditional concrete bearing platform is replaced with the reinforcedconcrete beam, on the premise that the bearing capacity of the tower crane foundation is not reduced, raw materials are saved, construction waste is reduced, and the cross-shaped steel beam is placedon the tower crane support, so that a tower crane is more convenient and quicker to disassemble and assemble, and the foundation is suitable for the installation of tower cranes of various models.

Description

technical field [0001] The invention belongs to the technical field of foundation construction of a boom-type tower crane, and in particular relates to a weight-type foundation of a boom-type tower crane underframe and a construction method. Background technique [0002] With the progress of the society, the development of the economy, the increase of the density of urban buildings, the increasing number of large-scale steel structure buildings, people's requirements for the environment are getting higher and higher. Or occupy the airspace of neighbors. Due to this limitation, many construction sites cannot use trolley-luffing tower cranes at all, while boom-type tower cranes have been used in China due to their relatively short turning radius, large lifting height and large lifting capacity. It is widely used in high-rise buildings and large-scale steel structure installations. [0003] In order to ensure the safety of the tower crane during use, the tower crane foundation...

AI Technical Summary

Problems solved by technology

However, this kind of tower crane foundation is large in size and requires more concrete and steel bars to make. , it is often necessary to excavate and drill holes to bury steel lattice columns. After the construction is completed, it is very troublesome to disassemble the foundation of the tower crane, which requires a lot of manpower and material resources, and produces a lot of construction waste, which pollutes the environment.

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