Passive Control Reinforced Concrete Frame Mechanism with High Strength Reinforcements and Its Potential Benefits Against Earthquakes  

作　　者：Asad Ullah Qazi 叶列平 陆新征 

机构地区：[1]Key Laboratory of Structural Engineering and Vibration of Ministry of Education,Department of Civil Engineering,Tsinghua University

出　　处：《Tsinghua Science and Technology》2006年第6期640-647,共8页清华大学学报（自然科学版（英文版）

基　　金：Supported by the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20040003095) and the Cul-tivation Fund of the Key Grant Scientific and Technical Innova-tion Project, Ministry of Education of China (No. 704003)

摘　　要：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.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.

关 键 词：EARTHQUAKE passive control high strength reinforcement failure mechanism residual displacement 

分 类 号：TU352.11[建筑科学—结构工程] TU378.4