Preset type tower crane deep foundation construction method and structure

A tower crane foundation and construction method technology, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of increasing tower crane foundation reinforcement costs, increasing construction unsafety, reducing tower crane foundation stability, etc., shortening the construction period of foundation pits, shortening the The drying time and the effect of convenient and quick construction

Inactive Publication Date: 2012-03-21
CHINA CONSTR SIXTH ENG DIV NO 3 CONSTR ENG +1
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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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  • Preset type tower crane deep foundation construction method and structure
  • Preset type tower crane deep foundation construction method and structure
  • Preset type tower crane deep foundation construction method and structure

Examples

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Embodiment Construction

[0024] 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:

[0025] see Figure 1 to Figure 5 .

[0026] A construction method for pre-installing a tower crane in an ultra-deep and super-large foundation pit, comprising the following steps: leveling the site → measuring and setting out the foundation of the tower crane → assembling the cylinder wall in place → installing the construction platform → excavating the earthwork in the cylinder → placing the second section of the cylinder wall Assembling → digging → assembling the third section of the tube wall... until the foundation bottom elevation → pouring foundation concrete → tower crane installation → commissioning and operation.

[0027] Specifically, the construction method of pre-installing the deep foundation of the tower crane in the ultra-deep...

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Abstract

The invention discloses a preset type tower crane deep foundation construction method, which comprises the following steps: 1 measuring and setting out, ensuring a tower crane foundation position, and spot using a pre-fabricated tile-shaped cylinder wall member to form a first section cylinder wall at the position of the tower crane foundation position; 2 excavating earthwork in the first section cylinder wall till the first section cylinder wall sinks under the ground; 3 spot using the pre-fabricated tile-shaped cylinder wall member to form a second section cylinder wall connected with the first section cylinder wall; 4 continuing earthwork excavation till the second section cylinder wall sinks under the ground; 5 repeating the step 3 and the step 4 till the bottom face of the first section cylinder wall reaches bottom elevation of the tower crane foundation; and 6 completing tower crane foundation construction at the bottom of the first section cylinder wall. The invention further discloses a tower crane deep foundation structure which adopts the tower crane deep foundation construction method. The preset type tower crane deep foundation construction method and the structure well resolve the problems that during construction process of ultra-deep and ultra-large foundation pits, a tower crane is utilized to perform vertical transportation during the whole course, and the stability of the tower crane is poor.

Description

technical field [0001] The invention relates to a construction method and structure of a preset tower crane deep foundation. Background technique [0002] At present, a common method of large-scale deep foundation pit construction is: excavate the earthwork to the base level and then carry out the construction of the tower crane foundation. Transportation problems increase the difficulty of construction, prolong the construction period, and increase the risk of foundation pit construction. The latter method is to construct four concrete pouring piles before the excavation of the earthwork, and the pile top elevation is set under the bottom plate of the tower crane foundation. After the installation of the tower crane is completed, the earthwork excavation is carried out. The deepening of the excavation depth will expose layer by layer, forming an unstable factor. In order to solve this problem, it is necessary to add scissors bracing between the four concrete pouring piles ...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D27/44E02D27/18
Inventor 李真郭颖余流
Owner CHINA CONSTR SIXTH ENG DIV NO 3 CONSTR ENG
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