高层建筑结构设计D值法及侧移计算.pptVIP免费

框架结构内力与位移计算框架结构内力与位移计算1水平荷载作用下的内力计算方法反弯点法D值法门架法•反弯点法适用范围：横梁线刚度与柱线刚度之比不小于3。反弯点位置：反弯点处弯矩为零，剪力不为零。1P3lH/233H/22H/2H/22H/312H/31P21Pl22反弯点处剪力计算：自上而下依次沿每层反弯点处取脱离体。P33H/2l1l23V33332V331V33332310PVVVX333333323233131DVDVDV33i3i12HEID313j333323133jDPDDDP33j333333333j323323233j3133131PDDDVPDDDVPDDDVjjj3仿照上述方法得：2PP3V212322VV2PP1P311V1312VV)()()(322j2323322j2222322j2121PPDDVPPDDVPPDDVjjj)()()(3211j13133211j12123211j1111PPPDDVPPPDDVPPPDDVjjj...