摘要
Abstract
To reduce the construction errors of prefabricated steelstructures,this paper takes a certain stadium as the research object,establishes a structural numerical model based on Abaqus,and systematically analyzes the variation laws of steel structure cable force and displacement with construction,as well as the sensitivity of the errors generated by the construction of radial cable length and ring beam nodes to the changes of steel structure cable force.The results show that the variation laws of the cable force and displacement of different cable shafts with the construction steps are relatively consistent,and the maximum displacement is all less than 700 mm,verifying the validity of the construction simulation.The length error of a single radial cable and the construction deviation of the ring beam have the greatest impact on the cable force of the truss unit where it is located.When the error occurs,the cable force of adjacent units increases,while the interval units are least affected.The variation of the cable force of each cable gradually decreases as the distance from the truss where the error is located increases.In conclusion,the construction errors of steel structures can be reduced in a targeted manner based on the variation laws of cable force and displacement.关键词
装配式建筑/钢结构/力学性能/施工误差/敏感性分析Key words
Prefabricated building/Steel structure/Mechanical properties/Construction error/Sensitivity analysis分类
建筑与水利
