《rC钢筋混凝土和预应力混凝土梁式桥讲解学习》由会员分享，可在线阅读，更多相关《rC钢筋混凝土和预应力混凝土梁式桥讲解学习（18页珍藏版）》请在金锄头文库上搜索。
1、,BRIDGEENGRGPARTII,Part2RC&PCbeambridge第二篇钢筋混凝土和预应力混凝土梁式桥,Chapter3第三章Analysisofsimplesupportedbeambridge简支梁桥的计算,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,1.Loaddistributedontransversebeam作用于横隔梁上的荷载,沿桥跨方向确定横隔梁上的计算荷载假定荷载在相邻横隔梁之间按杠杆原理法传递。按一列汽车车道荷载轮重
2、分布给中横梁的计算荷载为：,Pk,la,y1,qk,la,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,r,la,la,人群,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,1.Loaddistributedontransversebeam作用于横隔梁上的荷载,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,.Computingtheinternalfor
3、cebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,Model计算模型continuousbeamonelasticsupport横隔梁相当于弹性支撑上的连续梁,Ri=?,P,R1,R2,R3,R4,R5,P,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力,当荷载P作用于r截面左边时，截面上的弯矩和剪力：,R1,R2,R3,R4,R5,P=1,r,e,b1,b2,P=1,SCHOOLOFTRANSP
4、ORTATION,WUTPRODUCEDBY：XJCHEN,.Computingtheinternalforcebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力,当荷载P作用于r截面右边时，截面上的弯矩和剪力：,R1,R2,R3,R4,R5,P=1,r,b1,b2,P=1,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,.Computingtheinternalforcebasedonthestiff
5、nesstransversebeam偏压法计算横隔梁内力,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力,a,a,r截面弯矩影响线,P=1,e,1,r截面剪力影响线,P=1,e,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,.Computingtheinternalforcebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力影响线一
6、般横隔梁的弯矩在靠近桥中心线的截面较大，如A、B截面剪力则在靠近桥两侧边缘处的截面较大,如C、D截面,A,B,C,D,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,.Computingtheinternalforcebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力影响线,11,16,R1,R2,R3,梁处横隔梁截面的弯矩影响线,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY
7、：XJCHEN,.Computingtheinternalforcebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力影响线,梁处横隔梁截面的弯矩影响线,M31,M36,a,a,2d,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,.Computingtheinternalforcebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,3.5Computingthein
8、ternalforceontransversebeam横隔梁内力计算,横隔梁的内力影响线,梁、梁之间横隔梁截面的弯矩影响线,M31,M36,2.5d,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,.Computingtheinternalforcebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力影响线,梁处横隔梁截面的剪力影响线,Q21,Q26,1,1,SCHOOLOFTRANSPORTATION,
9、WUTPRODUCEDBY：XJCHEN,.Computingtheinternalforcebasedonthestiffnesstransversebeam偏压法计算横隔梁内力,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力计算确定作用在中横隔梁上的计算荷载,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力计算绘制中横隔梁的内力影响线布置荷载，计算截面内力,Q21,Q26,M31,M36,P/2,P/2,P/2,P/2,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,3.5Computingtheinternalforceontransversebeam横隔梁内力计算,横隔梁的内力计算荷载组合忽略横隔梁恒载内力，只考虑活载组合,SCHOOLOFTRANSPORTATION,WUTPRODUCEDBY：XJCHEN,本文欣赏结束,红藕香残玉簟秋，轻解罗裳，独上兰舟。云中谁寄锦书来？雁字回时，月满西楼。谢谢欣赏！,
