郑州东站轨道层双向框架式桥梁结构设计与分析
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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.
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.
引文
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[4]GB50111—2006铁路工程抗震设计规范[S].北京:中国计划出版社,2006.
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[6]熊学玉,黄鼎业.预应力工程设计施工手册[M].北京:中国建筑工业出版社,2003.
[2]陈富生,邱国桦,范重.高层建筑钢结构设计[M].北京:中国建筑工业出版社,2004.
[3]TB10002.3—2005铁路桥涵钢筋混凝土和预应力混凝土设计规范[M].北京:中国铁道出版社,2005.
[4]GB50111—2006铁路工程抗震设计规范[S].北京:中国计划出版社,2006.
[5]张剑,彭城,罗守占,等.郑州东站站房楼工程场地地震安全性评价工作报告[R].郑州:河南中原地震科技有限责任公司,2009.
[6]熊学玉,黄鼎业.预应力工程设计施工手册[M].北京:中国建筑工业出版社,2003.
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