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Seismic behavior and modeling of steel reinforced concrete (SRC) walls

机译：钢筋混凝土（SRC）墙的抗震性能和建模

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摘要

The steel reinforced concrete (SRC) wall consists of structural steel embedded at the boundary elements of a reinforced concrete (RC) wall. The use of SRC walls has gained popularity in the construction of high-rise buildings because of their superior performance over conventional RC walls. This paper presents a series of quasi-static tests used to examine the behavior of SRC walls subjected to high axial force and lateral cyclic loading. The SRC wall specimens showed increased flexural strength and deformation capacity relative to their RC wall counterpart. The flexural strength of SRC walls was found to increase with increasing area ratio of embedded structural steel, while the section type of embedded steel did not affect the wall's strength. The SRC walls under high axial force ratio had an ultimate lateral drift ratio of approximately 1.4%. In addition, a multi-layer shell element model was developed for the SRC walls and was implemented in the OpenSees program. The numerical model was validated through comparison with the test data. The model was able to predict the lateral stiffness, strength and deformation capacities of SRC walls with a reasonable level of accuracy. Finally, a number of issues for the design of SRC walls are discussed, along with a collection and analysis of the test data, including (1) evaluation of flexural strength, (2) calculation of effective flexural stiffness, and (3) inelastic deformation capacity of SRC walls. Copyright (c) 2014 John Wiley & Sons, Ltd.
机译：钢筋混凝土（SRC）墙由嵌入钢筋混凝土（RC）墙边界元素的结构钢组成。由于SRC墙的性能优于常规RC墙，因此在高层建筑的建造中已广泛使用SRC墙。本文提出了一系列准静态测试，用于检查承受高轴向力和横向周期性荷载的SRC墙的性能。相对于RC壁，SRC壁试样显示出更高的抗弯强度和变形能力。发现SRC墙的抗弯强度随着埋入结构钢的面积比的增加而增加，而埋入钢的截面类型不影响墙的强度。在高轴向力比下的SRC壁的最终侧向漂移率约为1.4％。此外，还为SRC墙开发了多层壳单元模型，并在OpenSees程序中实现了该模型。通过与测试数据进行比较来验证数值模型。该模型能够以合理的精度预测SRC墙的侧向刚度，强度和变形能力。最后，讨论了SRC墙设计的一些问题，以及对测试数据的收集和分析，包括（1）抗弯强度的评估，（2）有效抗弯刚度的计算以及（3）非弹性变形SRC墙的容量。版权所有（c）2014 John Wiley＆Sons，Ltd.

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