Severe earthquakes continue to cause major catastrophes. Many devices in active, hybrid, and semi-active structural control systems which are used as controllable force devices are costly to build and maintain. The passive control reinforced concrete frame （PCRCF） reinforced with high strength steel only in the columns presented here provides structural systems more resistance to lateral earthquake loadings at comparatively lower cost. The effectiveness is demonstrated by a nonlinear static analysis using fiber model for a single story single bay frame. The study shows that the use of high performance steel in columns prevents formation of plastic hinges at the critical column base sections and failures are always initiated by reinforcement yielding at the beam ends. Furthermore, after experiencing severe lateral drift, the passive control design has small residual displacements compared to ordinary reinforced concrete frames. PCRCF rehabilitation and strengthening can be achieved more easily as compared with ordinary reinforced concrete frame.
在M SC.M arc有限元分析软件程序的基础上,开发了针对钢筋混凝土杆系结构的钢筋混凝土纤维模型程序THU F IBER。在该程序中,结构构件中的混凝土和钢筋分别用不同的纤维来模拟,从而使得材料滞回特性得到较准确的表达。为了验证本程序的计算能力,本文针对一个钢筋混凝土高层框架结构进行了静力弹塑性分析和动力时程分析,结果表明,THU F IBER具有出色的分析非线性问题的能力,可以进行结构倒塌模拟。
