Construction process method for double-layer large-span steel structure corridor

Abstract

The invention provides a construction process method for a double-layer large-span steel structure corridor, and belongs to the technical field of building construction. According to the method, firstly, internal force analysis is conducted on the main beam of the steel corridor frame, then the main beam is segmented, hoisting joints are determined, segmented hoisting of the steel corridor frame is facilitated, and the mounting quality of the steel corridor frame is guaranteed; the method comprises the following steps: establishing an integral model of a steel corridor frame and a jig frame supporting part, determining the structural size of a jig frame main body, performing stress analysis on jig frame supporting legs, determining mounting points of a supporting frame, and performing projection measurement of lower chord control nodes and projection measurement of corridor elevation in the hoisting process of the steel corridor frame, so that the space stability of the steel corridor frame is improved, and the whole construction process is controllable; in the process of removing the supporting part and the supporting frame of the jig frame, according to the principle that unloading is conducted at the position with large deformation and then at the position with small deformation, the whole unloading process is controllable, and excessive downwarping of the steel beam caused by sudden unloading is avoided.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction technology method for a double-layer large-span steel structure corridor. Background technique [0002] In recent years, with the diversified development of high-rise and super-high-rise building forms, and the functional requirements of structural buildings, many projects are connected by connecting body structures between building groups, forming a connected building with multiple layers connected to the upper part. This kind of connector is usually made of steel structure and is often designed in the form of an air corridor. For example, the steel structure corridor system is in the shape of an inverted "T", connecting three super high-rise towers; the corridor relies on two vertical rigid cylinder structures to support the steel structure corridor system, and between the two rigid cylinders The main beam structure of the connecting corridor has a...

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Problems solved by technology

For the above-mentioned construction methods, the former is difficult to meet the hoisting range of the long-span corridor, and the tower crane is difficult to meet the requirements when installing the main beam structure of the corridor or a tower crane with a large lif

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