全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

多塔斜拉桥汽车荷载总体响应分析

DOI: 10.3969/j.issn.1674-0696.2013.sup.1.28, PP. 844-847

Keywords: 多塔斜拉桥,汽车荷载响应,车辆荷载模型,结构体系优化,multi-pyloncablestayedbridge,vehicleloadresponse,vehicleloadmodel,systemoptimization

Full-Text   Cite this paper   Add to My Lib

Abstract:

:?以国内某6塔斜拉桥为分析对象,引入汽车荷载实际响应计算的方法与技术,分析了不同交通运营状况下控制结构总体性能的特征效应响应时程。并将计算结果与JTGD60—2004《公路桥涵设计通用规范》汽车荷载计算结果进行了比较研究。结果显示:该多塔斜拉桥在不同交通运营状况下响应极值均显著小于规范计算值,依照现有设计本桥对汽车荷载有很大安全储备;多塔斜拉桥的汽车荷载响应特征与日均交通量及重车混入率密切相关;不同效应呈现出对汽车荷载加载方式及取值不同的敏感性能。为此,可以尝试建立反映实际负荷状况的多级别多参数汽车荷载模型,优化多塔斜拉桥设计。

References

[1]  楼庄鸿.多孔斜拉桥[J].公路交通科技, 2002, 19(2): 79-83.
[2]  Lou Zhuanghong.Multi-span cable-stayed bridges [J].Journal of Highway and Transportation Research and Development,2002,19 (2): 79-83.
[3]  JTG D60—2004 公路桥涵设计通用规范[S].北京: 人民交通出 版社,2 004.
[4]  JTG D60—2004 General Code for Design of Highway Bridges and Culverts [S].Beijing: China Communications Press,2004.
[5]  Cremona C.Optimal extrapolation of traffic load effects [J].Structure Safety,2001,23(1): 31-46.
[6]  O’Connor A,Eichinger E M.Site-specific traffic load modeling for bridge assessment [J].Proceedings of the ICE: Bridge Engineering, 2007,160(4): 185-194.
[7]  Nowak A S,Lutomirska M,Sheikh Ibrahim F I.The development of live load for long span bridges [J].Bridge Structure-Assessment, Design & Construction,2010,6(1): 73-79.
[8]  阮欣,周小燚,郭济.基于合成车流的桥梁车辆荷载效应极值预 测[J].同济大学学报: 自然科学版,2 012, 40 (10): 1458-1462.
[9]  Ruan Xin,Zhou Xiaoyi,Guo Ji.Extreme value extrapolation for bridge vehicle load effect based on synthetic vehicle flow [J]. Journal of Tongji University: Natural Science,2012,40 (10 ): 1458-1462.
[10]  鲍卫刚,李扬海,郑绍圭,等.公路桥梁车辆荷载研究[C]/ / 中 国土木工程学会桥梁及结构工程学会: 中国土木工程学会桥梁 及结构工程学会第十二届年会论文集.北京: 人民交通出版 社, 1997.
[11]  Bao Weigang,Li Yanghai,Zheng Shaogui,et al.Vehicle loads research for Highway Bridge[C]/ / China Civil Engineering Society for Bridge and Structural Engineering Institute: 12th Annual Meeting Proceedings of China Civil Engineering Society for Bridge and Structural Engineering Institute.Beijing: China Communications Press,1997.
[12]  阮欣,郭济,闫振国,等.青岛海湾大桥运营安全风险评估及对 策研究: 专题研究报告之构件易损性及结构强健性研究[R]. 上海: 同济大学,2 010.
[13]  Ruan Xin,Guo Ji,Yan Zhenguo,et al.Operational Safety Risk Assessment and Countermeasures Research for Qingdao Bay Bridge: Study on Component Fragility and Structure Robustness [R].Shanghai: Tongji University,2010.
[14]  Virlogeux M.Bridges with multiple cable-stayed spans[J].Structural Engineering International,2001,11 (1): 61-82.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133