Unlocking-prevention cable and film connecting structure of large-opening cable dome structure and construction method

Abstract

The invention discloses an unlocking-prevention cable and film connecting structure of a large-opening cable dome structure and a construction method. The structure comprises a torsion connecting assembly, a supporting column (2) and a gutter assembly. The gutter assembly is mounted at the top of the supporting column (2). One end of a film structure (5) is mounted in the gutter assembly in a sealed manner. One end of the torsion connecting assembly is fixedly mounted on a main cable, and a rotating part (11) is arranged at the other end of the torsion connecting assembly. The cable dome maincable (4), the bottom of the supporting column (2) and the other end of the torsion connecting assembly are rotationally connected through the rotating part (11) so that the film structure mounted onthe supporting column (2) and the main cable can relatively rotate. According to the unlocking-prevention cable and film connecting structure, a main cable net of the cable dome structure is used as amain force bearing component of the film structure, the unlocking risk is avoided through a rotational hinged joint, it can be ensued that the cable dome structure and an ETFE film structure meet structure safety and the building use function at the same time, and it is ensured that an overall cable dome structure building is attractive.

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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