Cable-membrane connection structure and construction method for anti-unlocking of large opening cable dome structure

Abstract

The invention discloses an anti-unlocking cable-membrane connection structure and construction method of a large-opening cable dome structure. The structure includes a twist connection assembly, a support column (2) and a gutter assembly; the gutter assembly is installed on the support column (2). At the top, one end of the membrane structure (5) is sealed and installed in the gutter assembly; one end of the torsion connection assembly is fixedly installed on the main cable, and the other end of the torsion connection assembly is provided with a rotating part (11), and the cable dome main cable (4) 1. The bottom of the support column (2) and the other end of the twist connection assembly are rotatably connected through a rotating member (11), so that the membrane structure installed on the support column (2) and the main cable can rotate relatively. The invention uses the main cable network of the cable dome structure as the main force-bearing member of the membrane structure, and avoids the risk of unlocking through the rotatable hinged joints, so as to ensure that the cable dome structure and the ETFE membrane structure meet both structural safety and architectural use functions, ensuring The overall cable dome structure is beautiful.

Description

technical field [0001] The invention relates to the technical field of architectural engineering space structures, in particular to a cable-membrane connection structure and construction method for unlocking-proof cable dome structures with large openings. Background technique [0002] The large-opening sunflower-shaped cable dome structure (i.e. levy-shaped cable dome) is composed of a supporting structure, an outer ring grid, a large opening cable dome structure and an inner ring truss. It is widely used in the construction of venues and other construction projects. [0003] During the construction of the sunflower-shaped cable dome structure with large openings, the ETFE membrane structure needs to be installed and constructed on the cable net system of the cable dome structure. The cable-membrane connection nodes are usually fixed in the form of hoops, but under the action of wind load or earthquake load, the hoops at the cable-membrane connection nodes may be torsion, ...

AI Technical Summary

Problems solved by technology

The cable-membrane connection nodes are usually fixed in the form of hoops, but under the action of wind load or earthquake load, the hoops at the cable-membrane connection nodes may be torsion, which can easily cause the main cables of the cable dome structure to twist in the opposite direction, and then It has an unlocking effect on the main cable, which seriously affects the mechanical performance of the cable, resulting in a great structural safety hazard for the entire cable dome structure that bears a huge cable force

At the same time, the intersecting parts of the cable-membrane connection nodes are prone to hidden dangers such as water leakage and water accumulation, which cause great hidden dangers to the building's use function

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