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首页> 外文期刊>Journal of structural engineering >Performance of Conventionally Reinforced Coupling Beams Subjected to Cyclic Loading
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Performance of Conventionally Reinforced Coupling Beams Subjected to Cyclic Loading

机译：循环荷载作用下常规配筋梁的性能

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The behavior of coupled-wall buildings primarily depends on the performance of coupling beams. Existing coupled-wall build­ings designed and built prior to the 1970s contain coupling beams reinforced with horizontal and vertical bars. Seismic evaluation of these older buildings is commonly performed using nonlinear static or dynamic analyses techniques. Results from nonlinear analyses depend on the quality of backbone curves that characterize the behavior of the individual coupling beams. Backbone curve construction must, therefore, focus on reliable estimates of the strength and deformation values used to characterize the behavior of the structural component. This paper presents experimental results of four conventionally reinforced coupling beams designed to exhibit different behavior modes during cyclic loading. The effect of different amounts of longitudinal and transverse reinforcement on behavior is highlighted. The measured shear strength of the beams is compared with values calculated using existing equations. The deformation components that contributed to chord rotation are identified and discussed in light of response parameters, such as measured strains and observed cracking. The tests also highlight the im­portance of accounting for reduction in shear stiffness to accurately determine the deformation response of coupling beams.
机译：耦合墙建筑物的行为主要取决于耦合梁的性能。在1970年代之前设计和建造的现有墙体联结建筑物包含用水平和垂直钢筋加固的连梁。通常使用非线性静态或动态分析技术对这些较旧的建筑物进行地震评估。非线性分析的结果取决于表征各个耦合梁性能的主干曲线的质量。因此，主干曲线的构造必须集中在强度和变形值的可靠估计上，这些强度和变形值用于表征结构部件的行为。本文介绍了四个常规加固的耦合梁的实验结果，这些梁设计为在循环荷载作用下表现出不同的行为模式。强调了不同数量的纵向和横向钢筋对行为的影响。将测得的梁的抗剪强度与使用现有方程式计算出的值进行比较。根据响应参数（例如测得的应变和观察到的裂纹）识别并讨论了有助于弦旋转的变形分量。这些测试还强调了考虑剪切刚度降低以准确确定耦合梁的变形响应的重要性。

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