Design and finite element analysis of multi-cable and eccentric cable clamp joint for super-span string structure
For super-span string structure,cable clamp joint at the bottom of strut is the key influencing factor of string structure forming.Due to the large internal force of outer ring hoop cable and immature production process of ultra large-diameter cable,parallel arrangement of multi-cable is usually adopted to satisfy the bearing requirements of outer ring hoop cable,and the corresponding cable clamp joint with large internal forces is connected to relatively large number of structural members.Based on the large-span suspended dome in the main gymnasium of Guiyang Olympic Sports Center(second stage),the design important and difficult key points of multi-cable clamp joint were analyzed.Through synthetical comparison of several arrangement forms of cable groove,the multi-cable and eccentric cable clamp joint for super-span string structure was proposed,and the integral force analysis and finite element analysis were conducted for the eccentric joint.The results show that multi-cable and eccentric cable clamp joint has less influence on structural cable force distribution.The design of the eccentric joint accords with the calculation assumption and has high bearing capacity and anti-slip ability,can effectively solve the problem of multi-cable cable clamp connection,cable clamp installation and cable replacement.
cable clamp jointstring structurejoint designfinite element analysis
NETL
NSTL
万方数据
维普
