三维地震累积损伤模型的参数研究

发布时间：2018-03-26 15:02

本文选题：损伤模型　切入点：三维　出处：《地震工程与工程振动》2014年S1期

【摘要】：本文收集整理了135根弯曲破坏的矩形墩柱试验结果,得到了构件的弯矩—转角关系,确定了屈服和极限状态点的取值原则,假定了单调加载下变形与循环加载下变形的关系,从而对郭进提出的三维地震累积损伤模型中的参数取值进行讨论。本文通过定义整体结果损伤值偏差,以损伤偏差值最小且取值满足实际要求为原则,确定该模型中的参数β可取为0.12,β1取为1.6。或者在确定β1取值时,考虑β的不确定性,通过卡方检验确定其服从韦伯分布。
[Abstract]:In this paper, the experimental results of 135 rectangular pier columns subjected to bending failure are collected and sorted out, and the relationship between bending moment and rotation angle of members is obtained, and the values of yield and limit state points are determined, and the relationship between monotone loading and cyclic loading is assumed. Thus, the parameter values in the 3D seismic cumulative damage model proposed by Guo Jin are discussed. In this paper, the deviation of the damage value of the whole result is defined, and the minimum value of the damage deviation value and the value of the damage value to meet the practical requirements are taken as the principle. The parameter 尾 in the model can be determined as 0.12, 尾 _ 1 as 1.6. Or when determining the value of 尾 _ 1, the uncertainty of 尾 _ (1) is considered, and the distribution of 尾 is determined by chi-square test.
【作者单位】：同济大学土木工程学院;贵州省公路工程集团有限公司;
【基金】：贵州省科技厅黔科合重大专项字【2011】6014 国家自然科学基金项目(51278373) 国家重点基础研究发展计划项目(2013CB036305)
【分类号】：TU311.3

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