|
|
|
| The Spatial Analysis of Curved Simple Trough Girder with Two － lane Railway |
| TIAN Yang，DENG Yun － qing，HUANG Sheng － qian |
| 1． China Railway Engineering Consultants Group，Beijing 100055，China; 2． Southwest Jiaotong University，Chengdu，Sichuan 610031，China |
|
|
|
|
Abstract Research purposes: Curved trough girder is an open structure which consists of girder and slab，the girder can generate bending － torsion coupling effect and slab can produce biaxial bending and torsion under vertical load，thes tress of curved trough girder is very complicated． Combined with the stress analysis of curved simple trough girder with two － lane railway，the mechanical properties of curved trough girder are studied to provide guidance for design and construction．
Research conclusions: The stress of curved trough girder indicates obvious spatial character． The tesion endured by the lower flange of outside main girder of curve is large，while the inside main girder of curve is relatively small under vertical load． The shear lag in slab is remarkable． The non － uniform settlement 10mm has little effect on the girder force． With the gradual increase of vertical load on the top，the inward lateral displacement which occurs to the top flange of main girder becomes lager and lager，and the notch of trough girder truns smaller and smaller． The bending －torsion coupling effect causes the different support reaction of trough girder between the inner side and the outer side of curve，the support pressure of outer side of curve is greater than those of inner side of curve at beam end． The girder has a tendency of whole transverse deflection towards the inner side of curve．
|
|
Received: 09 March 2012
|
|
|
|
|
|
［1］ 胡匡璋，江新元，陆光闾． 槽型梁［M］． 北京: 中国铁道出版社， 1987．
Hu Kuangzhang，Jiang Xinyuan，Lu Guanglu． Trough Grider［M］． Beijing: China Railway Publishing House，1987．
［2］ 陆光闾． 连续铁路槽形梁桥空间作用分析［J］． 铁道学报，2000( S) : 41 － 46．
Lu Guanglu． Spatial Analysis of Railway Continuous Trough Girder Bridge［J］． Journal of the China Railway Society， 2000( S) : 41 － 46．
［3］ 王淼，顾萍． 预制主梁现浇道床板的槽形梁研究［J］． 同济大学学报， 2003( 7) : 808 － 812．
Wang Miao，Gu Ping． Study of U Shaped Girder with Pre － cast Main Beam and Cast in － situ Slab［J］．Journal of Tongji University， 2003( 7) : 808 － 812．
［4］ Kuiper R R． Concrete Trough Girder Bridge for Rotterdam Metro［Z］． Challenges for Concrete in the Next Millennium， 1998．
［5］ 朱海松． 预应力混凝土铁路连续槽形梁的整体计算分析［J］． 上海铁道大学学报( 自然科学版) ，1997 ( 2) : 53 －57．
Zhu Haisong． Analysis on the Prestressed Concrete Railway Continuous Trough Girder Bridge［J］． Journal of Shanghai Tiedao University( Natural Science) ，1997( 2) : 53 － 57．
［6］ 李丽，王振领，张宇宁． 地铁高架槽形梁足尺模型破坏试验与空间分析研究［J］． 中国铁道科学，2005 ( 5) : 31 －35．
Li Li，Wang Zhenling，Zhang Yuning． Fracture Load Test and Spatial Analysis for the Full Scale Model of Underground Viaduct Channel Girder ［J］． China Railway Science， 2005( 5) : 31 － 35．
［7］ 贺恩怀． 槽形梁在城市轨道交通工程中的应用［J］． 铁道工程学报， 2003( 2) : 13 － 16．
He Enhuai． Application of Channel Girders in Project of Urban Rail Transit［J］． Journal of Railway Engineering Society， 2003( 2) : 13 － 16．
|
|
|
|
2012, Vol. 29 
