Cable replacing method for double-ring inhaul cable large-span steel structure

Abstract

The invention relates to the technical field of large-span space buildings, in particular to a double-ring inhaul cable large-span steel structure cable replacement method which comprises the following steps that S1, the position for replacing a bearing cable is determined; s2, a main transverse supporting rod is arranged at the bottom of the splayed support connected with the bearing cable needing to be replaced, and the main transverse supporting rod and the splayed support form a triangular structure; s3, a temporary jig frame support is arranged at the bottom of the connecting main beam at the position where the bearing cable is replaced; s4, the old load-bearing cable is dismantled; s5, a new bearing cable is installed; s6, the new bearing cable is connected with the splayed support; s7, the new bearing cable is tensioned till the supporting internal force of the temporary jig frame is zero; s8, the temporary jig frame supports, the main transverse supporting rods and the auxiliary transverse supporting rods are dismantled; and S9, finely adjusting the internal force of the new bearing cable to enable the internal force of the new bearing cable to be equal to the internal force of the old bearing cable. In the cable replacement process, the internal force change and deformation, caused by the annular internal force of the inhaul cable connecting structure system between the inner ring and the outer ring, of the structure of the cable replacement area can be reduced.

Description

technical field [0001] The present application relates to the technical field of large-span space buildings, and in particular, to a cable replacement method for a large-span steel structure with double-ring cable. Background technique [0002] In the spatial structure design of large-span stadium buildings such as stadiums and cultural theaters, long-span steel structures are often used. [0003] The double-ring cable long-span steel structure mainly includes the inner ring steel structure system, the cable connecting structure system between the inner and outer rings, and the outer ring steel structure system, which are arranged in turn from the center to the circumference. The outer ring steel structure system is connected by the cables between the inner and outer rings. The structural system supports the inner ring steel structure system, and the inner ring steel structure system and the cable connecting structure system between the inner and outer rings constitute the o...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: after the load-bearing cable fails, it needs to be replaced with a new load-bearing cable. The structure produces large internal force changes and deformation

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