Laminate type high-rise platform pile tower crane foundation and construction method

Abstract

The invention provides a laminate type high-rise platform pile tower crane foundation and a construction method. The method comprises the following steps of before excavating foundation pit earthwork, constructing four concrete cast-in-place piles, penetrating the concrete cast-in-place piles through a foundation bottom plate, wherein a pile top mark is higher than the ground or the close place; casting a reinforced concrete bearing platform on the tops of the four concrete cast-in-place piles, and pre-burying a tower crane foundation section in the bearing platform, wherein the mounting of a tower crane is finished; and before excavating the foundation pit earthwork, downwards excavating along the surrounding of the tower crane bearing platform, casting a concrete laminate structure layer by layer on the concrete cast-in-place piles above the foundation bottom plate, and widely excavating the earthwork in the other area. The problem that the tower crane is poor in stability when the tower crane is used for vertical conveying in a pit construction process is better solved, the tower crane can be mounted to work before engineering piles are not constructed or the foundation pit earthwork is excavated, the time for excavating a foundation pit is effectively shortened, the working efficiency of foundation pit construction is improved, the period for foundation pit construction can be greatly shortened, and beneficial conditions for the smooth perforation of the subsequent procedures are provided.

Description

technical field [0001] The invention relates to a tower crane foundation, in particular to a laminate type high pile cap tower crane foundation structure and a construction method. Background technique [0002] At present, one of the more common construction methods for large-scale deep foundation pits is: before excavating the earth, construct four concrete-filled steel pipe piles or concrete piles, and set the pile top elevation under the foundation cap of the tower crane, and wait until the tower crane is installed Afterwards, excavate the earth, and the cast-in-situ piles supporting the tower crane foundation will be exposed layer by layer as the excavation depth deepens, forming an unstable factor. In order to solve this problem, it is necessary to use steel pipes between the four steel pipe concrete piles or concrete piles Welding forms scissor braces to increase the overall stability of the high pile section. Although this method increases the stability of the tower ...

AI Technical Summary

Problems solved by technology

Although this method increases the stability of the tower crane foundation, it increases the welding process and a large amount of steel structure welding engineering and other processes, which limits the use time of the tower crane to a certain extent.

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