摘要
结合工程实例,指出了大底盘不对称双塔结构的振动属于空间的扭转耦联振动,各阶振型对基底剪力的贡献并不是随振型序递增而单调递减的,应该选取足够的振型数计算地震作用效应。
The calculation result of the example structure is presented.It shows that the vibration of non-mirrored two-towers high building with enlarged base is translational-torsional coupled vibration.The devotion of every vibration mode to the total shear-force at the bottom of the building is not reduced with the increasing of vibration mode number.The vibration mode number should be chosen adequately.
出处
《贵州工业大学学报（自然科学版）》
CAS
2004年第3期85-88,91,共5页
Journal of Guizhou University of Technology(Natural Science Edition)
关键词
非对称双塔
大底盘
平移-扭转耦联
动力特征
non-mirrored two-towers
enlarged base
translational-torsional coupled vibration
dynamic property
