徐龙河, 颜欣桐
AuthorsHTML:徐龙河, 颜欣桐
AuthorsListE:Xu Longhe, Yan Xintong
AuthorsHTMLE:Xu Longhe, Yan Xintong
Unit:北京交通大学土木建筑工程学院，北京 100044
Unit_EngLish:School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
Abstract_Chinese:针对钢筋混凝土柱Park-Ang双参数损伤模型的边界收敛性及变量离散性缺陷提出修正．通过理论推导, 得出P-Δ效应对构件侧移的影响．利用钢筋混凝土柱抗震性能试验数据, 根据构件的抗侧刚度、箍筋间距及横向箍筋约束类型等指标, 运用对数拟合及贝叶斯参数更新法, 得到对应的修正模型表达式, 并给出变量参数的建议取值．研究表明, 相对于原模型而言, 修正后模型边界收敛性提高, 且基于贝叶斯方法的修正形式更能体现不同构件间的差异性, 更具统计意义．根据试验现象, 验证了修正模型对损伤演化过程预测的适用性．
Abstract_English:Modification is presented in order to deal with the deficiency of boundary convergence and dissociation of Park-Ang double parameters damage model for RC column. The influence of P-Δ effects on lateral displacement of members is addressed by theoretical derivation. Based on the test results of seismic behavior of RC columns，with the effects of the lateral stiffness of member，stirrup spacing and configuration of confining considered，the correction expressions of the original model are given by logarithmic fitting and Bayesian methodology，respectively. Meanwhile，the values of variables are recommended. It is indicated that compared with original damage model，the modified model performs much better in boundary convergence，and the modification presented by Bayesian method stands out in the expression of diversity of different specimens，with more statistical significance. Validation is carried out to prove the feasibility of the modified model in prediction of the damage evolution process by experimental phenomenon.
Keyword_Chinese:钢筋混凝土柱; 损伤模型; P-Δ效应; 参数修正; 贝叶斯方法
Keywords_English:RC column; damage model; P-Δ effects; parameter modification; Bayesian method

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