摘要
为了分析约束扭转和畸变效应对人字形混凝土桥梁结构内力及应力的影响,应用考虑约束扭转和畸变效应的薄壁箱梁理论和有限元刚度分析法,编制了专用的空间杆系有限元程序.在此基础上,根据荷载作用方式、半径、箱梁高度、支座约束方式等因素的变化,进行人字形桥梁受力行为的参数分析,得到一些具有参考意义的结论.
In order to study the influence on the structure inner forces and stresses caused by restrained torsion and distortion effect in a Y_shape concrete bridge, based on the straight and curved thin_walled box girder theories and stiffness analytic method, a spatial beam finite element program has been developed in this paper. Based on these, parameter analysis about loading case,radiu,height,and restrain condition at the bearings has been carried out. Some useful conclusions have been obtained in the end.
出处
《广州大学学报（自然科学版）》
CAS
2003年第5期472-476,共5页
Journal of Guangzhou University:Natural Science Edition
关键词
人字形桥梁
薄壁箱梁桥
约束扭转
畸变
Y-shape bridge
thin-walled box girder bridge
restrained torsion
distortion
