华中科技大学学报：自然科学版2012，Vol.40Issue(11)：33-36,4.
门式墩纵向刚度及其对无缝线路纵向力的影响
Longitudinal stiffness of frame pier and its influence on longitudinal force on CWR
摘要
Abstract
In the high-speed railway bridge design of taking the frame pier as the substructure, to sim- plify the calculation of the longitudinal stiffness of the frame pier, the whole longitudinal stiffness ex- pression of the frame pier was derived considering the anti-push and torsional stiffness of columns and the beam bending stiffness. On this basis, the optimization methods of the parameters were investiga- ted. It was studied that lowering the longitudinal stiffness of the frame pier made an impact on beam- track interaction. The analysis shows: the longitudinal stiffness of frame pier can he made to increase 20% by the torsional stiffness. Compared with the normal reinforced concrete pier, the horizontal force on the frame pier is slightly lower and the rail braking force near it is larger. As much as possi- ble, the longitudinal stiffness of the frame pier should be close to the adjacent pier so as to decrease the longitudinal force on the rail.关键词
铁路桥梁/桥面系/高速铁路/门式墩/纵向刚度Key words
railroads bridges/bridge decks/high-speed railway/frame pier/longitudinal stiffness分类
交通工程引用本文复制引用
戴公连,闫斌,魏标..门式墩纵向刚度及其对无缝线路纵向力的影响[J].华中科技大学学报：自然科学版,2012,40(11):33-36,4.基金项目
国家自然科学基金资助项目 （）
中国博士后科学基金资助项目 （）
