Stay cable joint for open chord strengthening of space structure

A space structure and node technology, which is applied in special structures, building components, building structures, etc., can solve problems such as the difficulty in the construction of cables and support nodes, and achieve the effect of simple structure and easy on-site operation

Pending Publication Date: 2017-11-03
TIANJIN UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned problems, the present invention solves the problem of the difficult structure of the cable and the support node when adopting prestressed reinforcement to the existing structure, and provides a tensioning cable for space structure reinforcement that can reduce the workload of on-site welding and is easy to operate. cable node

Method used

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  • Stay cable joint for open chord strengthening of space structure
  • Stay cable joint for open chord strengthening of space structure
  • Stay cable joint for open chord strengthening of space structure

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Embodiment Construction

[0017] The present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0018] The present invention proposes a cable anchoring node for prestressed reinforcement, including a steel wire rope 1, a cable 2, a double-eared cable head 3, a pin shaft 4, an existing structure welded ball node 5 and a limit steel pipe 6. The two ends of the steel wire rope are sheathed on the bearing pin 4 after bypassing the welded ball joint 5, and the bearing pin 4 passes through the ear holes of the double-ear cable head 3.

[0019] A single or multiple steel wire ropes can be used. When a single rope is used, the combined force of its two limbs must coincide with the direction of the center line of the cable, and the intersection line between the steel wire rope and the ball node should be a generatrix of the sphere. When multiple steel wire ropes are used, the resultant force of each limb of the steel wire rope must coincide with the direction of ...

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Abstract

The invention relates to a stay cable joint for open chord strengthening of a space structure. Strengthening is achieved on an existing structure welded spherical joint (5). The stay cable joint comprises steel wire ropes (1), a stay cable (2), a dual-lug type cable head (3), a hinge pin (4) and limiting steel tubes (6), the hinge pin (4) penetrates through lug holes of the dual-lug type cable head (3), after the steel wire ropes wind across the welded spherical joint (5), the two ends of each steel wire rope are arranged on the hinge pin (4) in a sleeving mode, and the limiting steel tubes are fixed on the welded spherical joint (5), and used for limiting sliding of the steel wire ropes along a sphere.

Description

technical field [0001] The invention relates to a cable node used for string tension reinforcement of space structures. Background technique [0002] Since the 1960s, the grid structure has gradually developed in our country. At present, some projects need to strengthen the structure because they have reached their service life, construction quality or load changes. Commonly used grid reinforcement methods include fiber reinforcement method, bonded steel reinforcement method, casing reinforcement method and prestressed reinforcement method. Among them, the prestressed reinforcement method changes the original grid structure into a stringed structure system by adding cables and struts, which can effectively reduce the deformation of the structure and improve the rigidity of the structure. At the same time, the reinforcement construction does not need to unload the existing structure, and the number of rods to be reinforced is also greatly reduced, which is an efficient reinf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E04B1/34
CPCE04B1/34E04G23/0218
Inventor 陈志华马青韩芳冰王小盾闫翔宇刘红波
Owner TIANJIN UNIV
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