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Steel hoop truss type elevated pile cap tower crane foundation construction method and structure

A technology for high pile caps and tower crane foundations, which is applied in infrastructure engineering, construction, etc., can solve the problems of reducing the stability of tower crane foundations, increasing construction insecurity, and increasing the cost of tower crane foundation reinforcement, shortening the drying time, The construction is convenient and quick, and the effect of shortening the construction period

Inactive Publication Date: 2012-07-11
ZHONGTIAN CONSTR GROUP
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AI Technical Summary

Problems solved by technology

Although this method solves the vertical transportation problem during the foundation pit construction stage, it reduces the stability of the tower crane foundation, increases the hidden danger of unsafe construction, and increases the cost of tower crane foundation reinforcement

Method used

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  • Steel hoop truss type elevated pile cap tower crane foundation construction method and structure
  • Steel hoop truss type elevated pile cap tower crane foundation construction method and structure
  • Steel hoop truss type elevated pile cap tower crane foundation construction method and structure

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Embodiment Construction

[0016] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0017] see Figure 1 ~ Figure 2 , a steel hoop truss type high pile cap tower crane foundation structure, including four concrete cast-in-situ piles arranged in the foundation pit, the pile top elevation is located on the ground surface, and each concrete cast-in-place pile is located in the embedding section 6 below the foundation pit bottom surface The ratio of the length to the length of the exposed section 4 in the foundation pit is greater than or equal to 1.5; the top of the four concrete pouring piles is poured with a reinforced concrete cap 2; the four concrete pouring piles are formed on the exposed section in the foundation pit to connect them A steel truss-type hoop structure together, the steel truss-type hoop structure includes N...

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Abstract

The invention discloses a steel hoop truss type elevated pile cap tower crane foundation construction method. The method comprises (1) constructing four cast-in-place concrete piles in a foundation pit before foundation pit earthwork excavation, the pile bottom elevation being below the foundation pit bottom elevation and the ratio of the length of the cast-in-place concrete pile below the foundation pit bottom face to the length of the cast-in-place concrete pile in the foundation pit being larger than or equal to 1.5; (2) pouring a reinforced concrete pile cap at the pile top and installing a tower crane on the pile cap; and (3) carrying out the foundation pit earthwork excavation, while forming a steel truss type hoop structure on the exposed sections of the four cast-in-place concrete piles in the foundation pit to connect them together. The invention also discloses a steel hoop truss type elevated pile cap tower crane foundation structure constructed by the method. The tower foundation adopting the invention has stable and firm structure, high safety, convenient construction, and low cost, and the steel components of the steel truss type hoop structure can be recycled.

Description

technical field [0001] The invention relates to a construction method and structure of a tower crane foundation, in particular to a construction method and structure of a steel hoop truss type high pile cap tower crane foundation. Background technique [0002] At present, one of the more common methods of large-scale deep foundation pit construction is: after the earthwork is excavated to the base level, the construction of the tower crane foundation is carried out. The tower crane cannot play a role at all during the construction of the foundation pit support structure and temporary support. Without the problem of vertical transportation, the difficulty of construction is increased, the construction period is prolonged, and the danger of foundation pit construction is increased. Another construction method is to construct four concrete pouring piles before the excavation of the earthwork. The elevation of the pile tops is set under the bottom plate of the tower crane founda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42E02D27/12
Inventor 宋巍李克江张旭洪刘建平陈赛菊龚小东
Owner ZHONGTIAN CONSTR GROUP
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