Sphere joint fixing support with effect of relieving internal force of stay rope

Abstract

A sphere joint fixing support with an effect of relieving internal force of a stay rope comprises a lower supporting structure, an embedded cushion plate, an inverted-T-shaped sliding plate, a plurality of embedded reinforcing steel bars, a fixed sphere joint, a plurality of columnar rolling bearings, an anchorage device, a plurality of damper springs and a support. The sphere joint fixing support has the following advantages that material utilization rate is high, after the support is mounted, change of the internal force of the stay rope on a main structure is low, and the characteristic of high tensile ability of the stay rope can be sufficiently realized; construction is safe, simple and convenient, and the stay rope is anchored after penetrating through the inverted-T-shaped sliding plate, and then can stretch; if ultra stretching is caused due to reasons in construction, the sphere joint fixing support can realize a load relieving effect in advance, and the main structure is protected against being damaged by means of increasing deformation degree; and safety is high, after a building comes into use, once the building is subjected to load of power catastrophe such as violent earthquake, typhoon and the like, stretching and retracting of the damper springs can guarantee that the stay rope cannot be broken when the deformation of the main structure is high, and the hidden danger that the main structure collapses due to breakage of the stay rope is eliminated.

Description

technical field [0001] The invention belongs to the technical field of prestressed steel structures of building structures, and in particular relates to a ball joint fixed bearing capable of easing the internal force of a cable. Background technique [0002] In recent years, large-span space steel structures have been widely used. Among them, prestressed steel structures have attracted the attention of designers because of their reasonable force, high rigidity, and light weight. They are widely used, such as the terminal building of Pudong International Airport The first phase and the Guangzhou International Convention and Exhibition Center all adopted long-span stringed truss roofs, and the VIP Hall of Tianjin Museum and Jinan Gymnasium both adopted stringed dome structures. In addition, in bridge reinforcement, the application of external prestressing technology is becoming more and more extensive. [0003] In the construction of prestressed structural facilities, the cab...

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Problems solved by technology

[0006] However, the traditional method of hanging heavy objects to ensure the constant internal force of the cable cannot meet the aesthetic requirements of architectural design, resulting in a narrow application range. At the same time, under the action of wind suction, the constant internal force of the cable will cause excessive reverse deformation of the upper structure, causing premature structural failure

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