作　　者： ; ; ; ; ;

机构地区： 中南建筑设计院股份有限公司

出　　处： 《建筑结构》 2011年第7期59-63,118,共6页

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

领　　域： [建筑科学]