［摘要］天津西站屋盖结构采用单层联方网格形式的网壳，两端支承于高架层斜柱。网壳结构主要构件与屋盖拱脚均采用变截面薄壁箱梁。为满足建筑造型，主结构连接节点均采用相贯连接节点。屋盖主拱构件截面较大，截面不规则，相贯节点需考虑施工要求进行针对性设计。分析了主拱节点的构造形式，考虑到薄壁构件局部稳定性的要求，设计时还在节点内部布置纵横向加劲肋。进行了节点的受力分析，考察节点的应力分布与极限受力性能。
［关键词］相贯节点；承载力；薄壁箱梁
中图分类号：TU391文献标识码：A文章编号：1002-848X(2011)12-0108-04
Research on bearing capacity of roof structure joints at Tianjin West Railway Station
Liu Ming（Third Railway Survey & Design Institue Group Corporation, Tianjin 300251, China）
Abstract:A single-layer latticed shell supported by inclined columns is adopted in the roof structure of Tianjin West Railway Station. The box girder with variable cross-section is used in the main structure members and the inclined columns. For the architecture requirements, the intersecting joints are used at the connections of the main structure members. Due to the irregular and comparatively large cross section of the roof members, the intersecting joints need to be designed on the basis of the construction. Details of the joints were analyzed. As the thin wall box section, the longitudinal and transversal stiffeners were set in the arch section to keep the local stability of members. The bearing capacity of the roof structure joints were calculated, and the stress distribution was displayed as well.
Keywords:intersecting joints; bearing capacity; thin wall box section girder
作者简介：刘明，高级工程师，一级注册结构工程师，Email：liuming@tsdig.com。
参考文献
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