Tower crane foundation

Abstract

The invention discloses a tower crane foundation, wherein four reinforced concrete piles driven underground are arranged in a square and at four corners and fixedly connected with the lower parts of coaxial steel tube concrete columns through a reinforcement cage inside; the upper parts of the four steel tube concrete columns are provided with tower crane anchors that can be fixedly connected with a tower body; the outer surfaces of the upper and middle parts of the four steel tube concrete columns are fixedly provided with steel reinforcing rings; the steel reinforcing rings are fixedly connected with steel supports mutually crossing horizontally and horizontal steel supports; and the top of each reinforced concrete pile is provided with a reinforced concrete beam. Being simple in construction process and firm and reliable in overall structure, the tower crane foundation saves construction materials, reduces construction cost and is especially suitable for construction on soft soil layers.

Description

technical field [0001] The invention is applicable to the construction field, and in particular relates to a tower foundation. technical background [0002] When the fixed tower crane used in building construction is installed in the coastal soft soil area, it cannot be directly located on the natural foundation. The common practice is to use the pile foundation. That is to set concrete pouring piles under the concrete pile cap, and then embed the foot of the tower crane in the concrete cap. With the continuous increase of the construction scale, in order to maximize the coverage area of ​​the tower crane's working range and meet the attachment needs of the tower crane and the building, Chinese patent number: ZL200510013280.0 discloses a rigid steel structure tower crane foundation. The foundation of the tower crane can be installed in the middle of the foundation pit. The combination of concrete pouring piles and steel tube concrete columns is used as the foundation for su...

AI Technical Summary

Problems solved by technology

However, this tower crane foundation has the following deficiencies: (1) In order to meet the requirements for the foundation of the embedded tower crane, a steel column cap with a diameter larger than the steel tube column and concentric with it is set on the top of the steel pipe concrete column. During construction, it must be ensured that the column cap is concentric with the CFST column, otherwise the eccentric force of the CFST column will be caused

(2) When the tower crane is installed on soft ground, when the foundation pit is opened to the base, the foundation soil layer cannot play a role in embedding and restraining the steel tube concrete column. Therefore, before the concrete structure of the foundation floor is constructed, the tower crane foundation The stability is poor, and the lifting load is limited

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