摘要
为了解决宽幅装配式T梁桥荷载横向分布系数计算问题,以一座跨径为3×20m宽幅装配式T梁桥为依托,采用刚接梁法、修正偏心压力法、G-M法和梁格法四种方法分别计算其主梁的影响线和荷载横向分布系数,分析桥梁结构的横向受力规律及荷载横向分布系数计算方法的适用性,并与该桥荷载试验实测值进行了对比,结果表明:刚接梁法和G-M法计算结果与实测值相比误差小,最大误差仅为4.5%,而修正偏心压力法其相对误差较大,故推荐使用刚接梁法或G-M法计算宽幅装配式T梁桥荷载横向分布系数。
In order to solve the calculation problem of load transverse distribution coefficient of wide assembled T-beam bridge,based on a 3×20m wide assembled T-beam bridge,the influence line and load transverse distribution coefficient of its main beam are calculated by four kinds of methods like rigid connection beam method,modified eccentric pressure method,G-M method and beam grid method respectively,and the transverse force law and the calculation method of load transverse distribution coefficient of the bridge structure are analyzed,and the measured value of the load test of this kind of bridge is compared.The results show that:the error is small when the calculation result of the rigid connection beam method and G-M method is compared with the measured value,the maximum error is only 4.5%,and the relative error of the modified eccentric pressure method is large,so it is recommended to use the rigid connection beam method or G-M method to calculate the load transverse distribution coefficient of the wide assembled T-beam bridge.
作者
傅立军
李院军
王新伟
FU Li-jun;LI Yuan-jun;WANG Xin-wei(Henan Xinyi Expressway Co.,Ltd.,Zhengzhou 450000,China;School of Highway,Chang'an University,Xi’an 710064,China;Planning Department of Transportation Bureau of Linshu County,Linyi 276700,China)
出处
《北方交通》
2020年第3期5-9,共5页
Northern Communications
关键词
桥梁工程
装配式梁桥
荷载横向分布系数
刚接梁法
G-M法
梁格法
Bridge engineering
Assembled beam bridge
Load transverse distribution coefficient
Rigid connection beam method
G-M method
Beam grid method
