强震下确保双重抗侧力结构协同工作是实现多道抗震防线，形成合理破坏模式的关键。受长周期地震动低频特性及“大位移与长持时”作用特性影响，高层RC框架-剪力墙结构的协同工作性能及内力重分配特征异于普通地震动，现有结构协同工作分析的连续化方法及考虑内力重分配的内力计算方法已不再适用。针对此问题，本项目以高层RC框架-剪力墙结构为研究对象，通过有限元及理论分析，揭示长周期地震动低频特性对其协同工作的影响机理，建立考虑长周期地震动影响的结构侧向力分布模式，在此基础上提出长周期地震动作用下结构协同工作分析的连续化方法；通过RC剪力墙拟静力试验、模型结构振动台试验、有限元及理论分析，揭示长周期地震动作用特性对剪力墙刚度退化的影响机理，阐明长周期地震动作用下结构的内力重分配特征，并提出考虑其影响的结构内力计算方法。本研究对确保长周期地震动作用下高层RC框架-剪力墙结构的抗震安全具有重要科学意义与实用价值。

Ensuring cooperative work of dual structural systems is the key to realize multiple seismic fortification lines and reasonable structural failure modes under severe earthquakes. Influenced by the low-frequency characteristics and "large-displacement and long-duration" action characteristics of long-period ground motions (LPGM), the cooperative working performance and redistribution characteristics of internal force for high-rise RC frame-shear wall structures is different from that under ordinary ground motions. The present continuous method for the structural cooperative working analysis and the internal force calculation method considering the redistribution of internal force are not applicable anymore. Aiming at this problem, high-rise RC frame-shear wall structures are selected as research objects. The influence mechanism of low-frequency characteristics of LPGM on the structural cooperative work is revealed. The distribution mode of structural lateral force considering the influence of LPGM is established. And on this basis, the continuous method for the structural cooperative working analysis under LPGM is proposed. Meanwhile, through quasi-static tests of RC shear walls and the shaking table test, numerical modeling and theoretical analysis of the whole structure, the influence mechanism of action characteristics of LPGM on the stiffness deterioration behavior for RC shear walls is revealed, the redistribution characteristics of internal force for high-rise RC frame-shear wall structures under LPGM are clarified. And on this basis, the internal force calculation method considering the redistribution of internal force under LPGM is proposed. This study is of important scientific significance and practical value to ensure the seismic safety of high-rise RC frame-shear wall structures under LPGM.