双曲拱桥荷载横向分布计算的探讨  

On Calculating Methods of Transverse Load Distribution for Double Curved Arch Bridge

作　　者：冯尚德[1] 贾培栋 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州工业学院学报》2014年第5期27-30,共4页Journal of Lanzhou Institute of Technology

摘　　要：阐述了4种双曲拱桥的荷载横向分布系数常用计算方法,即弹性支承连续梁法、弹性支承连续梁法的简化算法、刚性横梁法和有限元法.以一座单跨双曲拱桥为工程背景,采用4种方法计算荷载横向分布系数,并与实测值进行对比分析.研究表明,采用刚性横梁法和有限元法计算的荷载横向分布系数与实测值最为接近,建议对于宽跨比小于0.5的双曲拱桥(窄桥)采用刚性横梁法计算荷载横向分布系数,而有限元法适用于双曲拱桥的精细分析.Four common calculation methods of transverse load distribution coefficient for double curved arch bridge are illustrated , including elastic bearing continuous beam method and its simplified algorithm , rigid trans-verse beam method , finite element method .The research is carried out on the background of a double curved arch bridge , the load transverse distribution coefficients which are worked out through these four methods are compared with experimental results .The result indicates that the theoretical calculating result of rigid transverse beam method and finite element method is accordant with the result of experimental test , and rigid transverse beam method is appropriate for narrow bridges （wide-span ratio less than 0.5）, finite method can be used for precise analysis of double curved arch bridge.

关 键 词：双曲拱 荷载横向分布 刚性横梁法 

分 类 号：U448.221[建筑科学—桥梁与隧道工程]