Experimental study on seismic behavior of high-strength concrete filled double-steel-plate composite walls
Experimental study on seismic behavior of high-strength concrete filled double-steel-plate composite walls
复制标题
高强混凝土双钢板组合墙体抗震性能试验研究
DOI：
10.1016/j.jcsr.2013.05.001
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发表时间：
2013-09-01
影响因子：
4.1
通讯作者：
Liu, Fu-Jun
中科院分区：
文献类型：
--
作者：
Nie, Jian-Guo;Hu, Hong-Song;Liu, Fu-Jun
为了提高承受高轴压和地震作用的超高层建筑核心墙的延性，提出了一种采用高强混凝土的新型细部混凝土填充双钢板（CFDSP）组合墙体。该CFDSP组合墙体由两端边界的钢管混凝土柱和双钢板混凝土墙体组成，墙体由分布板条横向连接的竖向加劲肋分隔成多个隔室。为了深入研究这种新型CFDSP复合墙体的结构机理，对12个试件进行了大轴向压缩力和反向循环侧向荷载下的测试。由于钢板宽厚比合理，板条布置合理，表层钢板没有出现明显的屈曲，整个加载过程中表层钢板与填充高强混凝土能够相容工作。所有试件均表现出良好的耗能能力和变形能力，具有完整的滞回曲线和大的极限位移比，这表明当采用所提出的新型详细墙体时，高强混凝土可以用于抗震结构。根据试验结果，分析了刚度和强度退化，并详细讨论了所有试件的变形特征。最后，提出了一种基于截面分析方法的强度预测方法，并提出了日常设计实践的一些详细要求。 (C) 2013 Elsevier Ltd. 保留所有权利。
In order to improve the ductility of the core wall in super high-rise buildings subjected to high axial compressive force and seismic effect, a new detailed concrete filled double-steel-plate (CFDSP) composite wall using high-strength concrete is proposed. This CFDSP composite wall is composed of concrete filled steel tubular columns at the two boundaries and concrete filled double-steel-plate wall body which is divided into several compartments by vertical stiffeners transversely connected by distributed batten plates. In order to intensively investigate the structural mechanism of this new type of CFDSP composite walls, twelve specimens are tested under large axial compressive force and reversed cyclic lateral load. No evident buckling of surface steel plates can be observed due to reasonable width-to-thickness ratios of steel plates and properly arranged batten plates, so that the surface steel plates and infill high-strength concrete can work compatibly in the whole loading process. All the specimens exhibited good energy dissipation ability and deformation capacity with full hysteretic curves and large ultimate drift ratios, thereby indicating that high-strength concrete can be used in seismic-resistant structures when the proposed new detailed walls are adopted. Based on the test results, the stiffness and strength degradations are analyzed, and the deformation characteristics of all the specimens are discussed in detail. Finally, a strength prediction approach based on the section analysis method is presented, and some detailing requirements for routine design practice are recommended. (C) 2013 Elsevier Ltd. All rights reserved.