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。 Guangzhou New Passenger Station roof is a large-span steel structure, the temperature effect is one of the control factors in structural design. Ecotect software is used to study the distribution of non-uniform temperature at various times in Guangzhou New Passenger Station. Using MIDAS software, the effect of uneven temperature on roof structure was analyzed and compared with the effect of uniform temperature increase on the structure. The results show that the overall uniform temperature rise is not the most unfavorable condition of the structural design, and the structural design needs to consider the effect of the uneven temperature effect.