In chapter 3,the relationship of the parameters such as frequency ratio, mass ratio, damper ratio of mega_frame and substructure, and mean-square of random response is given .

• 3．在第3章，结合频域分析法和随机分析方法对单层巨型钢框架悬挂结构体系进行了主子结构间质量比、频率比、阻尼比等参数的优化分析研究。