新建沈阳南站东西子站房连体结构设计

Design of Connection Structure of Newly-built West and East Sub-station Building of Shenyang South Station

研究目的:新建沈阳南站东西子站房屋顶网架结构支座落在两个塔上,使整体结构成为连体结构,结构受力复杂,本文旨在研究屋顶网架采用不同支座形式结构整体受力的特点,确定合适的网架支座形式。研究结论:通过对东西站房屋顶网架支座形式采用双向弹簧支座和固定铰支座进行结构整体受力的对比,计算分析表明采用双向弹簧支座后,可以有效地减低屋顶网架结构对支承框架柱的水平推力,并且温度应力大大减小。本文还进行了罕遇地震下的时程分析,得到了网架支座在罕遇地震作用下的最大变形量,选用的双向弹簧支座允许变形量应能满足罕遇地震作用下的最大变形量。

Research purposes： The roof grid structure of west and east sub - station building of newly - built Shenyang South Station is supported by two towers to make the whole structure becoming a connection structure with complex load bearing situations. This paper researches the whole load bearing characteristics of the grid structures with different types of support in order to choose the suitable support of the grid structure. Research conclusious：The comparison is made between the whole load bearing situations of the grid structure of the west and east sub - station building when using a bidirectional sprirtg support and a fixed hinge support. The calculation and analysis show using a bidirectional spring support can much cut the horizontal thrust of the roof grid structure on the column of the bearing frame and the temperature stress. In this paper, the time - history analysis is also made under condition of the seldom earthquake to know the maximum deformation volume of the grid structure support under the effect of the seldom earthquake. The allowable deformation volume of the bidirectional spring support should meet its maximum deformation volume caused by the effect of the seldom earthquake.