Accumulated continuous pre-assembly construction method for large special-shaped steel structure

Abstract

The invention relates to an accumulated continuous pre-assembly construction method for a large special-shaped steel structure. The accumulated continuous pre-assembly construction method comprises the steps that 1, the large special-shaped steel structure is divided into a plurality of segments; step 2, simulation of a pre-assembly operation is conducted by using a total station; 3, after the measurement and control points of all the segments are determined, a theoretical measurement point drawing is automatically output in a deepened design model for a measurer to contrast and check and actually measure all the segmented components; 4, jig frames are set on site according to the measurement and control points of respective segments, and pre-assembling of the segments on the corresponding jig frames is conducted; and step 5, all the assembled segments are re-measured, and the segments are sequentially hoisted to actual mounting positions for mounting after the segments are accurate. According to the accumulative continuous pre-assembly technology, the requirement for installation of components in a narrower space can be met, large components are segmented, the hoisting difficulty is lowered, the problem that due to the fact that the rigidity of the components is not enough, the components are prone to deformation during hoisting, and the installation difficulty is increased is solved, and the transportation and manufacturing difficulty of the components is lowered.

Description

technical field [0001] The invention relates to the technical field of steel structure construction, in particular to a cumulative and continuous pre-assembled construction method for large special-shaped steel structures. Background technique [0002] Since the late 1980s, steel structures have been widely used in the field of construction. With the country's requirements for the transformation and development of the steel industry, there are more and more different types of steel structure buildings. Steel structures have entered a period of rapid development, and new requirements have been put forward for the production efficiency and manufacturing level of steel structure manufacturing. However, most domestic steel structure processing enterprises still generally use traditional methods such as steel rulers, guy wires, lofting wires, and inspection templates to check whether steel components meet the design requirements. For complex steel components, physical pre-assemb...

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Problems solved by technology

[0003] The present invention proposes a cumulative and continuous pre-assembly method for steel structures, which can satisfy the installation of components in a narrower space, reduce the difficulty of hoisting by dividing large components into sections, and solve the problem that the difficulty of installation is increased because the components themselves are not rigid enough and are easily deformed during hoisting. And reduce the difficulty of component transportation and production

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