大跨度铁路钢桁梁斜拉桥刚度设计及取值研究

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摘要研究目的：通过统计国内外已建成并安全运营的大跨度铁路钢桁梁斜拉桥刚度参数，参考国内外现有规范，结合铁路斜拉桥的刚度特点，分析大跨度铁路钢桁梁斜拉桥的刚度指标。在此基础上，通过车桥耦合振动的分析方法，分析大跨度铁路钢桁梁斜拉桥高跨比、宽跨比对车辆与桥梁的动力响应影响，提出大跨度铁路钢桁梁斜拉桥的刚度取值范围。

研究结论：(1)结合已建成的大跨度铁路钢桁梁斜拉桥及现有规范，考虑荷载差异，大跨度铁路钢桁梁斜拉桥竖向刚度可适当偏低，大跨度铁路钢桁梁斜拉桥竖向挠跨比设计值可取为1/500~1/800；(2)设计风速时横向挠跨比可放宽到1/1000~1/2000，可行车风速下横向挠跨比限值按规范取为1/4000；(3)桁架高跨比可取为1/25~1/40，桁架宽跨比可取为1/25~1/35；(4)本文研究成果对今后大跨度铁路斜拉桥初步设计工作具有一定的指导意义。

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	陈克坚
	李永乐
	李龙
	曾永平

关键词 ：铁路斜拉桥, 刚度, 挠跨比, 高跨比, 宽跨比

Abstract：Research purposes：The stiffness design parameters of most of long span railway steel truss cable-stayed bridges in safe operation are summarized firstly．Referring to current codes around the world，and considering stiffness characteristics of railway cable-stayed bridge，the stiffness indexes of long span railway steel truss cable-stayed bridges are discussed．Then，the dynamic responses of vehicles and bridge are calculated by the coupled vibration method of vehicle-bridge systems to explore the effect of depth-span ratio and width-span ratio．And the reasonable value ranges of the stiffness design indexes are presented for long span railway steel truss cable-stayed bridges．

Research conclusions：(1)According the existing long span railway steel truss cable-stayed bridges and current codes，considering the difference of loads，the requirement of vertical stiffness of long span railway steel truss cable-stayed bridges can be reduced to certain degree．The ratio of vertical deflection to span should be in the range of 1/500~1/800 for the design of long span railway steel truss cable-stayed bridges．(2)The ratio of lateral deflection to span at the design wind speed can be up to 1/1 000~1/2 000，the ratio of lateral deflection to span at the wind speed allowing train operation should be less than 1/4 000 according to the current code．(3)The ratio of truss height to span should betaken as 1/25~1/40，the ratio of truss width to span should be 1/25~1/35．(4)In this paper，the research results call provide the valuable reference for the design of long span railway steel truss cable-stayed bridge．

Key words： cable-stayed bridge of railway stiffness ratio of deflection to span depth-span ratio width-span ratio

收稿日期: 2013-11-13

PACS:

U448.27

基金资助:铁道部重大科研课题(2009G004-D)资助

作者简介: 陈克坚，1966年出生，男，教授级高级工程师

引用本文:

陈克坚，李永乐，李龙，曾永平. 大跨度铁路钢桁梁斜拉桥刚度设计及取值研究[J]. 铁道工程学报, 2014, 31(3): 66-71.
CHEN Ke-jian，LI Yong-le，LI Long，ZENG Yong-ping. Research on the Stiffness Design and Its Value for Long Span Railway Steel Truss Cable-stayed Bridge. Journal of Railway Engineering Society, 2014, 31(3): 66-71.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2014/V31/I3/66

[1]辛学忠，郭向荣。大跨度铁路桥梁刚度统一描述方法探讨[J]．铁道工程学报，2007(1)：82-86．

Xin Xuezlaong．Guo Xiangrong．Exploration on Unified Describing Method for Rigidity of Large-span Railway Bridge[J]．Journal of Railway Engineering Society，2007(1)：82-86．

[2]李小珍，强士中．大跨度公铁两用斜拉桥车桥动力分析[J]．振动与冲击，2003(1)：6-9，19，25．

Li Xiaozhen，QiangShizhong．Vehicle-Bridge Dynamic Analysis for Long Span Highway and Railway Bi- Purpose Cable-Stayed Bridge[J]．Journal of Vibration and Shock，2003(1)：6-9，19，25．

[3]程国庆，潘家英．大跨度铁路斜拉桥竖向刚度分析[C]//全国桥梁结构学术大会论文集．武汉：同济大学出版社，1992．

Cheng Guoqing，Pan Jiaying．Long-span Railway Cable-stayed Bridge Vertical Stiffness Analysis[C]//National Academic Conference Proceedings of Bridge Structure．Wuhan：tongji University Press,1992．

[4] 高阳，曾庆元．钢梁横向刚度与行车安全[J]．铁道建筑，1997(9)：19-20．

Gao Yang，Zeng Qingyuan．Transverse Stiffness and Driving Safety of Steel Beam [J]． Railway Engineering，1997(9)：19-20．

[5]铁建设[2007]47号，新建时速300～350公里客运专线铁路设计暂行规定[S]．

Railway Construction[2007]No．47，The Temporary Regulations for the Designs of the Passenger Dedicated Railway with a Speed of 300 km/h to 350 km/h[S]．

[6] 周诗广．大跨度桥上铺设无砟轨道结构设计研究[J]．铁道标准设计，2011(3)：1-5．

Zlaou Shiguang．Study On Structural Design of Ballastless Tracks Laid on the Long-span Bridges[J]．Railway Standard Design，2011(3)：1-5．

[7] 李小珍．高速铁路列车-桥梁系统耦合振动理论及应用研究[D]．成都：西南交通大学，2000．

Li Xiaozlaen．High Speed Railway Train-Bridge System Coupling Vibration Theory and Application Research[D]．Chengdu：Southwest Jiaotong University，2000．

[8]严国敏．现代斜拉桥[M]．成都：西南交通大学出版社，1996．

Yan Guomin．Modern Cable—Stayed Bridges[M]．Chengdu：Southwest Jiaotong University Press，1996．

[9]李永乐，蔡宪棠，安伟胜，等．大跨度铁路悬索桥结构刚度敏感性研究[J]．中国铁道科学，2011(4)：24-30．

Li Yongle，Cai Xiantang，An Weisheng，ere．Study on the Sensitivity of the Structural Stillness of Long-span Railway Suspension Bridge[J]． China Railway Science，2011(4)：24-30．

[10]张强，李永乐，邓江涛，等．桁宽对大跨度铁路斜拉桥车-桥耦合振动性能的影响研究[J]．桥梁建设，2012(1)：19-23．

Zhang Qiang，Li Yongle，Deng Jiangtao，etc．Coupling Vibration of Long Span Railway Steel Truss Girder Cable-Stayed Bridge[J]．Bridge Construction，2012(1)：19-23．

[11]TB 10621—2009，高速铁路设计规范(试行)[S]．

TB 10621—2009，Code for Design of High Speed Railway『S1．