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Modeling parameters and acceptable plastic chord rotations for diagonally reinforced concrete coupling beams
Journal of Building Engineering ( IF 6.4 ) Pub Date : 2021-05-05 , DOI: 10.1016/j.jobe.2021.102650
Sang Whan Han , Chang Seok Lee , Eun Seon Cho

Nonlinear analyses are commonly used when evaluating the seismic performance of buildings. To produce reliable results in a seismic performance evaluation, the modeling parameters used in numerical models must be determined accurately for building components. In addition, proper values of acceptance criteria need to be used in the evaluation. In this study, modeling parameters and acceptance criteria for plastic chord rotations are proposed for diagonally reinforced concrete coupling beams (DRCBs). Empirical equations to calculate the values of modeling parameters for DRCBs are proposed by conducting stepwise nonlinear regression analyses with test data of 42 collected DRCB specimens. The proposed equations predicted the measured values of modeling parameters of DRCBs more accurately than the values specified in ASCE 41-16. The acceptance criteria for IO, LS and CP levels are proposed, based on the target exceedance probabilities.



中文翻译:

对角钢筋混凝土连接梁的建模参数和可接受的塑料弦旋转

在评估建筑物的抗震性能时,通常使用非线性分析。为了在抗震性能评估中产生可靠的结果,必须为建筑物组件准确确定数值模型中使用的建模参数。另外,评估中需要使用适当的验收标准值。在这项研究中,提出了对角钢筋混凝土耦合梁(DRCB)的塑性弦旋转建模参数和验收标准。通过进行逐步非线性回归,提出了计算DRCB建模参数值的经验方程。用42个收集的DRCB标本的测试数据进行分析。与ASCE 41-16中指定的值相比,拟议的方程式更准确地预测了DRCB建模参数的测量值。根据目标超出概率,提出了IO,LS和CP级别的接受标准。

更新日期:2021-05-11
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