施工环境温度对车辐式结构成型状态影响分析

Research on the change of cables′ internal force of spoke structures at initial pre-stress state due to temperature loads in construction process

从概念上界定了结构的设计基准温度、构件制作温度和构件安装温度的概念,并揭示了前述各温度之间的差异对车辐式结构性能的影响,针对几种不同的边界条件和形式的车辐式结构,推导了索力变化与温度荷载的关系,并将有限元计算结果与理论推导结果进行了对比。这些理论推导的结论,可以为车辐式结构的设计和施工提供一定的参考。

The structural design temperature,producing temperature and building temperature of members were defined,and the influence on performance of spoke structure was revealed when they have different values.Then the relation of temperature variation and temperature stress of spoke structure was studied according to several structural forms and boundary conditions.The theoretic solution was compared with finite element analysis result,and they both reached a good agreement.The conclusion is helpful for the design and construction of spoke structure.