郑州东站轨道层双向框架式桥梁结构设计与分析  

Structural design and analysis of the two-way frame bridge for East Zhengzhou Railway Station

作　　者：李霆[1] 周德良[1] 熊森[1] 魏剑[1] 万海洋[1] 

机构地区：[1]中南建筑设计院股份有限公司,武汉430071

出　　处：《建筑结构》2011年第7期59-63,118,共6页Building Structure

摘　　要：郑州东站站房为全高架桥建合一铁路站房,其轨道层采用"钢骨混凝土柱+双向预应力混凝土框架梁"的结构体系,首次将双向预应力混凝土框架结构应用于铁路桥梁。由于上部结构的矩形钢管混凝土柱要插入桥墩柱,框架梁采用双肋箱梁,显著减小了梁高及柱墩尺寸,避免了普通钢筋及预应力筋在穿柱时与上部钢柱埋入钢骨"打架",保证了传力的可靠性。郑州东站轨道层双向框架式桥梁结构突破了传统单线桥梁的范围,可为同类工程提供参考。East Zhengzhou Railway Station,a super-long span frame structure,is a combination of full elevated railway bridge and architecture structure.It is the first time to use a new type structural system in the railway bridge,including steel reinforced concrete columns,two-way prestressed concrete frame beams and cast-in-place concrete floors,which can improve economy and earthquake-resistance capability of the structure,reduce the size of components,and increase the architectural clearance and the usable floor area.The joints of cross-double beams and columns avoid a lager number of openings for the reinforcements and the prestressed reinforcements through the wall of steel reinforced concrete columns,which ensure a reliable force transmission.The two-way frame bridge in the railway floor of East Zhengzhou Railway Station broke through the range of the traditional single-line bridge and can be reference for similar projects.

关 键 词：郑州东站 桥建合一 铁路桥梁 钢骨混凝土柱 预应力 箱梁 超长结构 

分 类 号：TU318[建筑科学—结构工程]