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

查看全文 作　　者：Asad Ullah [1]Qazi;[1]叶列平;[1]陆新征 高影响力作者 机构地区：[1]Key Laboratory of Structural Engineering and Vibration of Ministry of Education,Department of Civil Engineering,Tsinghua University高影响力机构 出　　处：《Tsinghua Science and Technology》索引2006年第11卷第6期,共8页高影响力期刊 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 pre- vents 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：地震 被动控制 高强度钢筋 预应力混凝土框架 抗震能力 潜在效益
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