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Hanging method of special-shaped reinforced concrete prefabricated column

A technology of reinforced concrete and hoisting method, which is applied in the processing of building materials, construction, building construction, etc., which can solve the problems of damage to the edges and corners of components, failure to guarantee the verticality of hoisting, and slippage of hoisting points, so as to avoid cracks and reduce labor costs. Positioning and correction time, avoiding the effect of friction

Active Publication Date: 2015-05-13
ZHEJIANG JINXIN CONSTR ENG
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AI Technical Summary

Problems solved by technology

When assembling a special-shaped column, it is necessary to comprehensively consider the self-weight of the special-shaped column, the load change, the strength, and the stiffness during the lifting and delivery process. It needs to be kept vertical to facilitate insertion into the cup-shaped foundation, but the binding method cannot guarantee the verticality of lifting

Method used

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  • Hanging method of special-shaped reinforced concrete prefabricated column
  • Hanging method of special-shaped reinforced concrete prefabricated column
  • Hanging method of special-shaped reinforced concrete prefabricated column

Examples

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Embodiment Construction

[0043] See attached picture. This embodiment takes the special-shaped column 1 with a single weight of 27t and a length of 18.45 m as an example, including the following steps:

[0044] 1) Calculate the position of the lifting point 3 on the special-shaped column 1; according to the principle of mechanical horizontality, the weight on both sides of the center of gravity of the special-shaped column 1 is equal, and the position of the center of gravity in the X-axis and Y-axis directions can be calculated; the position of the lifting point 3 should be selected in the X direction on the center of gravity line;

[0045] The lifting point 3 will cause shear damage to the reinforced concrete during the hoisting process. According to the calculation of the bearing capacity of the reinforced concrete structure, the shear strength of the stressed section at the lifting point 3 will be checked; due to the strong compressive capacity of concrete, the shearing capacity In the calculatio...

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Abstract

The invention discloses a hanging method of a special-shaped reinforced concrete prefabricated column. The method comprises the steps that (1) a hanging starting point position on a special-shaped column is computed; (2) a turning hanging point position on the special-shaped column is computed; (3) sleeve pipes are buried at the hanging starting point and the turning hanging point in advance; (4) long-rod screws penetrate into the pre-buried sleeve pipes of the turning hanging point respectively; (5) special-shaped column demoulding and turning are carried out; (6) preparing before hanging of the special-shaped column is carried out; (7) hanging of the special-shaped column is carried out; (8) a special-shaped column foot is stabilized and is inserted into a cup-shaped foundation; (9) special-shaped column aligning is carried out; (10) a crowbar is used for prying a wedge, or a hammer is used for striking the wedge, so that the center line of the column body is aligned with the center line of the cup bottom; (11) crane unhooking is carried out, and the special-shaped column is placed to the cup-shaped foundation bottom; (12) the wedge on the periphery is tightly stricken; (13) special-shaped column perpendicularity correction is carried out; and (14) grouting is carried out immediately after correction is carried out. During component prefabricating, a hanging hole is reserved, and the shortcomings that hanging point sliding and component corner damage which can happen easily through a conventional binding method are overcome.

Description

technical field [0001] The invention belongs to the technical field of building construction methods, in particular to a hoisting method of a special-shaped reinforced concrete prefabricated column. Background technique [0002] Reinforced concrete prefabricated column is a common main force-bearing component in construction engineering. It has the characteristics of high bearing capacity, convenient local materials, less steel consumption, strong durability, good fire resistance and moldability, and poor crack resistance. Special-shaped reinforced concrete prefabricated columns (hereinafter referred to as special-shaped columns) are generally longer than 12m, and the upper and lower sections of the columns are unequal sections. They are widely used in industrial projects such as electric power, chemical industry, and metallurgy. When assembling a special-shaped column, it is necessary to comprehensively consider the self-weight of the special-shaped column, the load change,...

Claims

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Application Information

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IPC IPC(8): E04G21/14E04G21/16
Inventor 陈荣利燕涛肖波蔡洪涛高懿孙洪王玲玲
Owner ZHEJIANG JINXIN CONSTR ENG
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