对高层多塔连体结构进行水平、竖向多点激励下的地震响应时程分析,并针对此结构计算量大的特点采用了子结构法进行自由度缩聚,该法在保证计算精度的前提下大大提高了计算效率,多点激励时考虑了行波效应以及场地部分相干效应。通过对某多塔连体结构的计算分析,结果表明:在水平地震动作用下,考虑多点激励会使连廊杆件轴力有所增大,其中行波效应变化对杆件轴力影响尤为明显;但是在竖向地震动作用下,考虑多点激励会使连廊杆件轴力有所减小。 Seismic response time-history analysis of high-rise multi-tower Siamese structures under horizontal and vertical multi-point excitation is carried out. The sub-structure method is adopted for polycondensation of degrees of freedom in view of the large amount of computation. Greatly improve the computational efficiency, multi-point excitation to consider the traveling wave effect and the site part of the coherent effect. Through the calculation and analysis of a multi-tower structure, the results show that under the action of horizontal ground motions, the multi-point excitation will increase the axial force of the corridor member, and the influence of the traveling wave effect on the axial force of the member Especially when it is under vertical ground motions, the multi-point excitation will reduce the axial force of the corridor bar.