桥梁设计例题

按杠杆法绘主梁的荷载横向分布影响线Р 100 900 100Р①②③④⑤Р Р 100 10 220 220 220 220 110Р Р Р①Р Р Р Р②Р③Р 图3-2 按刚性横梁法绘主梁的荷载横向分布影响线Р主梁跨中活载弯矩表3-6Р活载Р截面位置Р梁号РmcРqРKN/mРM2РPРKNРyР弯矩(KN-m)Р车道荷载Р0.682Р1.3Р10.5Р35.65Р238Р3.656Р1103.33Р②Р0.541Р1.3Р10.5Р35.65Р238Р3.656Р875.22Р③Р0.4Р1.3Р10.5Р35.65Р238Р3.656Р647.12Р①Р0.682Р1.3Р10.5Р47.53Р238Р4.875Р1471.15Р②Р0.541Р1.3Р10.5Р47.53Р238Р4.875Р1167.00Р③Р0.4Р1.3Р10.5Р47.53Р238Р4.875Р862.84Р人群荷载Р①Р0.655Р0Р3Р35.65Р0Р3.656Р70.05Р②Р0.427Р0Р3Р35.65Р0Р3.656Р45.67Р③Р0.2Р0Р3Р35.65Р0Р3.656Р21.39Р①Р0.655Р0Р3Р47.53Р0Р4.875Р93.40Р②Р0.427Р0Р3Р47.53Р0Р4.875Р60.89Р③Р0.2Р0Р3Р47.53Р0Р4.875Р28.52Р(5)计算主梁活载剪力Р(ⅰ)计算主梁跨中截面活载剪力Р主梁跨中截面活载剪力表3-7Р活载Р截面位置Р梁号РmcРqРKN/mРM2РPРKNРyР弯矩(KN-m)Р车道荷载Р①Р0.682Р1.3Р10.5Р2.44Р285.6Р0.5Р149.32Р②Р0.541Р1.3Р10.5Р2.44Р285.6Р0.5Р118.45Р③Р0.400Р1.3Р10.5Р2.44Р285.6Р0.5Р87.58