不均匀温度作用对广州新客站主站房钢结构影响

Influences of non-uniform temperature action on steel structures of main building of New Guangzhou Station

广州新客站屋顶为大跨度钢结构,温度作用是结构设计的控制因素之一。采用Ecotect软件,研究了广州新客站各时刻不均匀温度的分布。利用MIDAS软件,分析了不均匀温度作用对屋顶结构的影响,并与整体均匀升温作用对结构的影响进行了对比。结果表明,整体均匀升温并非结构设计的最不利工况,结构设计需要考虑不均匀温度作用的影响。

The roof structure of New Guangzhou Railway Station is a large-span structure,and the temperature action is one of controlling factors.Using software Ecotect,the distribution of non-uniform temperature is studied.Using software MIDAS,the influences of non-uniform temperature action are analyzed,and compared with those of uniform temperature action.The results show that uniform temperature action is not the most adverse combination, and the non-uniform temperature action should be considered for the structural design.