【作者】 于钢； 曹云中； 吴杰； 唐锦春；

【Author】 Gan Gang , Cao Yunzhong , Wu jie , Tang Jinchun (Architectural Design and Research Institute, Zhejiang University, Hangzhou 310027, China; College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China)

【机构】 浙江大学建筑设计研究院； 浙江大学建筑工程学院；

【摘要】 基于现有异形柱的研究成果与有关钢筋混凝土非线性力学等基本理论,对空间异形柱框架结构的非线性有限元分析方法进行了深入研究。针对此类框架柱截面异形的特点提出了简化计算模型,结合控制位移的单向及反复推覆分析方法,探讨能描述空间异形柱框架结构工作时抗震性能的方法,并验证了其有效性。通过在不同方向水平荷载作用下的推覆分析方法,对空间异形柱框架结构各方面的抗震性能与矩形柱框架结构作对比研究,得到异形柱框架抗震性能的特点。更多还原

【Abstract】 Nonlinear finite analysis of 3D-frame with special-section column is proposed based on results of studies on special-section column and fundamental theory such as nonlinear mechanics of reinforced-concrete. According to the frame features such as irregular cross-section of the column, a simple calculation model is obtained. The calculation program for the structure’ s nonlinear analysis with self-modifying step-iterative method under condition of incremental displacement is set up with Push-over method under the unilateral and the reversed cyclic loading. The proposed method is verified. By Push-over under various horizontal direction loading, the special aseismic performance of the 3D-frame with special-section column is discovered after compared with 3D-frame with rectangular-section column.更多还原