Steel latticed column homocentric-square-shaped concrete bearing platform combination type tower crane base structure and construction method
A technology of steel lattice column and tower crane foundation, which is applied in the direction of foundation structure engineering, underwater structures, artificial islands, etc., and can solve the problems of early insertion of vertical transportation in deep foundation pit construction, etc.
Inactive Publication Date: 2013-06-05
ZHONGTIAN CONSTR GROUP
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a combined tower crane foundation structure and construction method of steel lattice column back-shaped concrete cap, which can ensure the safety of tower crane construction and solve the vertical transportation of deep foundation pit construction well. The problem of inserting in advance, and the flatness of the concrete can be better controlled to ensure that the requirements for the installation of the tower crane on it are met
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[0021] Such as Figure 1 to Figure 4 The combined tower crane foundation structure of the steel lattice column back type concrete cap, which includes four vertically arranged rectangular steel lattice columns 2, and horizontal scissor braces 20 and vertical scissor braces are arranged between the steel lattice columns. Scissor brace 21, the bottom of the steel lattice column is inserted into the bored pile 1, and the bored pile is arranged under the basement floor 11, and a concrete structure cap 10 is poured under the basement floor 11, and the steel grid A back-shaped concrete cap 3 is poured on the top of the column, and the bottom of the tower crane is installed on the back-shaped concrete cap 3 .
[0022] The cross section of the steel lattice column is square. The side length of the cross-section of the steel lattice column is 480 mm, and the diameter of the steel bar used in the bored pile is 18 mm.
[0023] In addition, the construction method of the steel lattice co...
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The invention discloses a steel latticed column homocentric-square-shaped concrete bearing platform combination type tower crane base structure. The base structure comprises four steel latticed columns vertically distributed in a rectangle. A horizontal diagonal bracing and a vertical diagonal bracing are arranged between the steel latticed columns, the bottoms of the steel latticed columns are inserted in a drilling pouring pile arranged under a base plate of a basement, a concrete structure bearing platform is poured under the base plate of the basement, a homocentric-square-shaped concrete bearing platform is poured at the top of the steel latticed columns, and the bottom of the tower crane is installed on the homocentric-square-shaped concrete bearing platform. Effect of self gravity of the concrete bearing platform on the steel latticed columns is considered, the concrete bearing platform is made to be homocentric-square-shaped to form a steel latticed column homocentric-square-shaped concrete bearing platform combination type tower crane base, tower crane construction safety can be ensured by adopting the base, and the problem of in-advance insertion in deep base pit construction vertical transportation is well resolved. Further, concrete smoothness can be well controlled to meet requirement of the tower crane for installation.
Description
technical field [0001] The invention relates to the field of tower crane foundation construction, in particular to a construction method for a combined tower crane foundation of steel lattice columns with back-shaped concrete caps. Background technique [0002] With the development of urban construction, buildings tend to develop multi-storey basements, and the depth and scale of basements are getting larger and larger. For construction needs, considering that tower cranes need to be used early, and at the same time, in order to reduce the excavation depth during foundation construction of tower cranes, the construction site is getting bigger and bigger. More and more tower crane foundations with high caps in deep foundation pits are used, that is, the type of pile foundation + steel lattice column + concrete cap (steel platform). The type of pile foundation + steel lattice column + steel platform is difficult to guarantee the quality of steel welding and the cost is high, w...
Claims
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IPC IPC(8): E02D27/42E02D27/14E02D29/045
Inventor 李江波蔡彬强黄依强
Owner ZHONGTIAN CONSTR GROUP
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