斜交箱梁桥荷载横向分布系数的简化计算方法  

Simplified Calculation Method of Transverse Load Distribution Factor of Oblique Box-girder Bridges

作　　者：靳华蕾 蒋磊 JIN Hua-lei;JIANG Lei(Tianjin Bohai Vocational Technical College,Tianjin 300408;China Railway Design Group Co.,Ltd.,Tianjin 300142)

机构地区：[1]天津渤海职业技术学院,天津300408 [2]中国铁路设计集团有限公司,天津300142

出　　处：《天津职业院校联合学报》2019年第10期110-113,123,共5页Journal of Tianjin Vocational Institutes

摘　　要：针对斜交箱梁桥荷载横向分布系数求解不完善性和复杂性现象,通过对正交直桥的相关研究,提出模态参数法不受桥型的制约,可以用于斜交箱梁桥的计算。为了进一步探究模态参数法精确度,借助Midas/civil空间梁格模型,求解斜交荷载横向分布系数,并与其它数值解法的结果进行对比,结果表明:模态参数法用于计算斜交箱梁桥的荷载横向分布系数是满足工程计算需要的,希望在今后能引起人们的关注。Aimed at the phenomena of imperfection and complexity of solution of transverse load distribution factor of oblique box-girder bridges,through the research on orthogonal straight bridges,it is proposed that the modal parameter is not restricted by the type of bridge and can be used for the calculation of oblique box girder bridge.In order to further explore the accuracy of modal parameter method,the transverse load distribution factor oblique box-girder bridges iscalculated with Midas/civil space beam grillage method model,and compared with the results of other solutions.The result shows that the application of modal parameter method in calculation of transverse load distribution factor of oblique box-girder bridges meets the calculation demand,and it is hoped that this method can be concerned by people in the future.

关 键 词：斜交箱梁 荷载横向分布系数 模态参数法 空间梁格法 

分 类 号：U442[建筑科学—桥梁与隧道工程]