|
|
|
| Study by Prediction for Post Deformation of Continuous Beam-arch Bridge on Guangzhou-Shenzhen-Hongkong Passenger Dedicated Railway |
| WANG Cun-guo1, HUANG Na-xin2, CUI Yang-hua3 |
| China Railway Siyuan Survey and Design Group Co. Ltd, Wuhan, Hubei 430063, China |
|
|
|
|
Abstract Research purposes: Due to the influence of concrete creep, the pre-stressed concrete beam of the ballastless will cause post deformation and lead to hogging and sagging, moreover, the deformation increases with time gradually, and results in non-smoothness of track. In this paper, research the influence on the creep deformation by changing laying time of track, dynamical analysis is made for the bridge by considering initial deformation result from creep and temperature.
Research conclusions: By bimulating the whole construction process of the beam-arch composite bridge with span arrangement (76+160+76)m on Guangzhou-Shenzhen-Hongkong passenger dedicated railway over liugangyong watercourse, conclude that:(1)The laying time of track have more influence on the creep deformation, when extend the laying time, the creep deformation of girder become smaller. (2)The more of suspender forces, the more of the sagging on side span and hogging on main span. The smaller of suspender forces, the smaller of the sagging on side span and hogging on main span. (3)Dynamical analysis is made for the bridge by considering initial deformation result from creep and temperature, the results show that the dynamical performance meets the requirement. (4) The research results can be used in control for post deformation of large span bridges.
|
|
Received: 12 October 2013
|
|
|
|
|
|
[1] 何义斌. 大跨度无碎轨道连续梁桥后期徐变变形研究 [J]. 铁道学报, 2008(8):120-124.
He Yibin. Study on Post Creep Deformation of Long-span Concrete Continuous Bridge with Ballastless Tracks [J]. Journal of the China Railway Society, 2008(8):120-124.
[2] 童永江. 大跨度预应力混凝土无碴轨道连续梁桥后期徐变变形的研究 [D]. 中南大学, 2008.
Tong Yongjiang. Study on Post Creep Deformation of Long-span Prestressed Concrete Continuous Bridge with Ballastless Tracks[D]. Changsha: Central South University, 2008.
[3] 王巍, 薛伟辰. 高速客运专线轨道梁徐变变形研究进展 [J]. 铁道科学与工程学报, 2005(8):39-44.
Wang Wei, Xue Weichen. Study Progress on Creep Deformation of High-speed Dedicated Passenger Railway Track Girders [J]. Journal of Railway Science and Engineering, 2005(8):39-44.
[4] 叶梅新, 钱森, 刘杰. 无碴轨道预应力混凝土桥梁徐变变形控制方法研究 [J]. 铁道标准设计，2009(2):92-94.
Ye Meixin, Qian Miao, Liu Jie. Study on Creep Deformation Control of Prestressed Concrete Bridge with Ballastless Tracks [J]. Railway Standard Design, 2009(2):92-94.
[5] TB 10621-2009, 高速铁路设计规范(试行) [S].
TB 10621-2009, Code for Design of High Speed Railway (Trial) [S].
[6] 韩冰, 杜金生, 王元丰. 徐变对钢管混凝土拱桥的影响分析[J]. 公路交通科技, 2005(6):75-77.
Han Bing, Du Jinsheng, Wang Ruanteng. Analysis of Creep Influence on CFST Arch Bridge [J]. Journal of Highway and Transportation Research and Development, 2005(6):75-77.
[7] 王法武, 石雪飞. 大跨度预应力混凝土梁桥长期挠度控制研究 [J]. 公路, 2006(8):72-76.
Wang Fawu, Shi Xuefei. A Study on Long-Term Deflection Control of Long Span Prestressed Concrete Girder Bridge [J]. High Way, 2006(8):72-76.
[8] 刘建瑞, 陈良江. 无碴轨道预应力混凝土梁设计研究 [J]. 铁道标准设计, 2001(9):10-17.
Liu Jianrui, Chen Liangjiang. Design and Study on Prestressed Concrete Beams with Ballastless Tracks [J]. Railway Standard Design, 2001(9):10-17.
[9] 许三平. 高速铁路大跨度连续梁拱徐变研究 [J]. 中国水运, 2010(5):155-156.
Xu Sanping. Study on Creep of Long-span Continuous Beam-Arch Composite Bridge on High-Speed Railway [J]. China Water Transport, 2010(5):155-156.
[10] 马明(108+2*185+115)m连续刚构收缩与徐变变形试验研究 [J]. 铁道工程学报, 2010(10):67-73.
Ma Ming. Experimental Research on Shrinkage and Time Deformations of Main Bridge with(108+2x185+115)m Continual Rigid Frame [J]. Journal of Railway Engineering Society, 2010(10):67-73.
[11] 西南交通大学. 广深港客运专线沙湾水道特大桥车桥动力分析 [R], 成都: 西南交通大学, 2007.
Southwest Jiaotong University. Vehicle-bridge Dynamic Analysis of a Super Large Bridge on Guangzhou-Shenzhen-Hongkong Passenger Dedicated Railway over Shawan Watercourse [R]. Chengdu: Southwest Jiaotong University, 2007.
|
|
|
|
2014, Vol. 31 
