Steel truss tool type concrete frame industrial plant formwork support structure

Abstract

A steel truss tool type concrete frame formwork support structure for an industrial factory building, characterized in that: the secondary truss support is on the upper chord node of the main truss, the main truss support is on the support derrick node, and the support derrick support is on the cap foundation. In the present invention, since the supporting derrick column is on the surface of the cap foundation, there is no problem of foundation bearing capacity, and the "collapse" of the beam caused by the support subsidence is fundamentally eliminated; because the main truss can be assembled on the ground, and then the tower crane is hoisted. position, the efficiency is greatly improved; because the steel truss is a tool-type combination, it can be reused many times, saving materials, especially for structures with large floors, saving a lot of scaffolding tubes or wooden square supports, which has considerable economic benefits; There are many ground operations, which reduces the unfavorable factors of high-altitude operations. In addition, safety nets can be hung under the truss to provide safety protection for falling from high places and reduce safety risks.

Description

technical field [0001] The invention relates to a support form for the construction of a formwork support system of a concrete frame industrial factory building. Background technique [0002] The formwork support forms of the current construction concrete frame in my country's construction industry mainly include: steel pipe scaffolding support, that is, the support of the main frame beam plate is a support system composed of steel pipe scaffolding; wood support: that is, the support of the main frame beam plate is made of wood or wood. The support system composed of rods; tool formwork: mainly in the form of flying molds, generally used in high-rise residential buildings. The problems with the current support system are as follows: [0003] 1. The problem of foundation bearing capacity [0004] The first layer of the general concrete frame is backfill soil, the maximum bearing capacity is 10kn / m 2 , according to scaffolding specifications and formwork regulations, when ch...

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Problems solved by technology

[0004] The first layer of the general concrete frame is backfill soil, the maximum bearing capacity is 10kn / m 2 , according to scaffolding specifications and formwork regulations, when checking the foundation under the support pole, the coefficient of 0.4 should be multiplied, so the bearing capacity of the foundation can only be 4kn / m 2 Considering that the quality of the backfill soil is qualified, the general industrial concrete frame transmits a large load from the vertical pole, so a rigid backing plate with a large pad area is required under the vertical pole. It is difficult to meet the requirements on site, and the formwork support subsides. Excessive beam deflection happens from time to time and there are no good measures to prevent it

[0005] 2. Process problems of steel pipe scaffolding

[0006] There are still several problems in steel pipe scaffolding that are difficult to grasp during construction: one is that when the cross-bar is loaded, because the fastener can bear a maximum load of 800kg, it cannot be used when the cross-section of the beam is large, which has great limitations; When the fasteners are manually operated, the degree of tightening cannot be checked, and there is a certain risk

[0007] 3. Large material consumption and long construction period

[0008] No matter the steel scaffold support system or the wooden support system consumes a lot of materials, especially in the frame with a relatively large floor height, it requires a lot of materials and takes a long construction period

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