考虑耦联影响的二次结构体系减震分析

建立了基础隔震的主次结构体系耦联运动方程，开发了动力分析程序PS—BASE．FOR，对一典型结构的二次结构绝对加速度反应谱与相对位移反应谱计算分析表明，主体结构隔震或同时增大二次结构阻尼，是取得二次结构较好抗震性能的有效途径，增大主体结构的隔震阻尼对二次结构略有不利影响。

Seismic analysis of secondary systems considering coupling effect

Secondary structures are those systems and elements which are built on or attached to the floors, roof, and walls of a building. Although the damage of secondary structures represents little threat to life, it can seriously impair a building's function and results in major direct and indirect economic loss. To a typical model of primary-secondary systems, the response spectra of absolute acceleration and relative displacement of the secondary structure are obtained, in which coupling effet between the primary and secondary structures is considered. The compared analysis shows that it is an efficient means to achieve favorable performance of the secondary structures in earthquakes by base isolation for the primary structure or for both the primary and secondary structures. Increasing the damping ratio of the base isolation system has slightly undesirable influence on the seismic response of the secondary structures.