(上海市城市建设设计研究总院，上海 200125)

 [摘要] 天津西站北广场地下工程为超长半地下结构，设计中同时面临了地铁区间段下穿形成的大跨结构，以及结构净高的严格控制。通过采用短向受力框架体系、温度效应分析、预应力设计等手段，综合解决了上述设计问题，相关方法与思路可为同类型结构设计提供参考。

[关键词] 超长；地下结构；结构布置；温度效应；预应力

中图分类号：TU318

作者简介：徐壮涛，

Structure design on north square of Tianjin west railway station underground structure

Xu Zhuangtao

(Shanghai Urban Construction Design & Research Institute, Shanghai 200125, China)

Abstract: North square of Tianjin west railway station underground structure is a semi-underground structure, of which the long span structure over metro section and the clear space should be considered in design. Design difficulties were successfully solved by adopting short-direction-supported frame system, temperature effect analysis, prestressed concrete design method. The design methods adopted in this project can provide reference for the similar structure design.

Keywords: super long; underground structure; structural arrangement; temperature effect; prestressed

                        参考文献

[1] 王铁梦．工程结构裂缝控制[M]．北京：中国建筑工业出版社，1997．

[2] 郑振鹏．天津西站超长混凝土结构温度应力分析[J]．中国市政工程，2010：84-85,99