（1 中国铁路设计集团有限公司， 天津 300251； 2 中国建筑科学研究院，  北京 100013）

［摘要］新建济南东站屋盖为复杂双曲面落地拱结构体系，最大跨度为156m，刷新了中国高铁客站的结构跨度。详细介绍了该屋盖的结构布置、荷载作用、设防目标、构件截面以及体系特点，分析了结构的静力特性、动力特性以及整体稳定性，对拱脚预应力拉索、基础刚度、屋盖纵向刚度、节点设计等关键技术进行了研究。研究结果表明：结构体系传力明确合理，主桁架拱以轴力为主，弯矩效应较小。温度对结构的变形影响较大，施工阶段极限温差对结构的影响较小。自振模态分析和屈曲分析表明结构的整体刚度和稳定性较好。拱脚拉索方案很好地解决了拱脚水平推力的问题，关键节点设计解决了受力复杂、汇交杆件较多的情况以及夹角较小的情况，实现了建筑构想，该研究对以后高铁客站的设计具有很好的借鉴意义。

［关键词］济南东站； 大跨度落地拱； 复杂双曲面； 结构特点； 关键技术

中图分类号：TU393-3文献标识码：A文章编号：1002-848X(2018)21-0072-06

Research on floor-type arch roof structure of Jinan East Railway Station

Yu Yang1, Ma Ming2, Song Zhiwen1, Zhao Pengfei2, Weng Kai1, Zhao Guangwei1, Liu Feng2

(1 China Railway Design Corporation, Tianjin 300251, China; 2 China Academy of Building Research, Beijing 100013, China)

Abstract:The roof structure of newly-built Jinan East Railway Station is complex hyperboloid floor-type arch with the largest span of 156m, and it refreshes the structure span record of high-speed railway station in China. Structural layout, load effect, fortification object, member cross-section and structural characteristics were described in detail. The static characteristics, dynamic characteristics and global stability were analyzed, and the key technologies of prestressed cable, foundation stiffness, longitudinal stiffness and joint design were studied. The results show that, the force transmission is reasonable, and the axial force of main trusses is the major internal force with small bending moment effect. The temperature has a great effect on the deformation of the structure, and the effect of the limit difference in temperature is small at construction stage. The static mode analysis and buckling analysis show that the stiffness and stability of the structure is well. The modal analysis and buckling analysis show that the overall stiffness and stability of the structure are better. The arch foot cable scheme solves the problem of horizontal thrust of arch foot very well. The key node design solves the problems of complicated force, more joints and small angle, and realizes the architectural conception. This study has a good reference for the future design of high-speed railway station.

Keywords:Jinan East Railway Station; large-span floor-type arch; complex hyperboloid; structural characteristic; key technology

*中国铁路设计集团有限公司科技开发课题（721759）。

作者简介：余洋，学士，教授级高级工程师，Email:yuyang01@crdc.com。