Numerical simulation method for reinforced concrete columns based on modified Bouc-Wen model

被引：0

作者：

Guo Y.-R. ^{[1
,2
]}

Pan J.-Z. ^{[1
]}

机构：

[1] College of Civil Engineering, Hunan University, Changsha

[2] Key Laboratory of Building Safety and Energy Efficiency, Hunan University, Changsha

来源：

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2024年 / 54卷 / 04期

关键词：

Bouc-Wen model; lumped plastic hinge model; parameter identification; RC column;

D O I：

10.13229/j.cnki.jdxbgxb.20220670

中图分类号：

学科分类号：

摘要：

In order to simulate the mechanical properties of reinforced concrete（RC） columns within nonlinear state，In this paper，an modified Bouc-Wen model is proposed to improve the Bouc-Wen-Baber-Noori （BWBN） model from the aspects of stiffness degradation， pinching effect and asymmetric characteristics. In the meantime，an identification method of model parameters is established by combining parameter normalization processing and chaotic particle swarm optimization algorithm. Furthermore，secondary development for modified Bouc-Wen material is presented in OpenSees. Afterwards，the proposed material is applied to describe the moment-rotation relationship of plastic hinge of RC columns and numerical modeling of RC columns based on concentrated plastic hinge is completed. According to the low-cyclic loading test data of RC columns，the hysteretic characteristics of RC columns are described by directly identifying the horizontal force-displacement curve and numerical modeling based on lumped plastic hinge model. The results show that the accuracy of the modified Bouc-Wen model is significantly higher than that of BWBN model. The calculation accuracy of fiber model depends on the accuracy of components information，which fails to simulate the nonlinear response of RC columns after performance change. The numerical modeling method based on the modified Bouc-Wen model can rationally simulate the degradation，pinching effect and asymmetric characteristics of RC columns after earthquake damage. © 2024 Editorial Board of Jilin University. All rights reserved.

引用

页码：1028 / 1037

页数：9

共 17 条

[1]

Ma F, Ng C H, Ajavakom N., On system identification and response prediction of degrading structures [J], Structural Control & Health Monitoring, 13, 1, pp. 347-364, (2010)

[2]

Baber T T, Wen Y K., Random vibration hysteretic, degrading systems[J], J Engrg Mech ASCE, 107, 6, pp. 1069-1087, (1981)

[3]

Ibarra L F, Medina R A, Krawinkler H., Hysteretic models that incorporate strength and stiffness deterioration[J], Earthquake Engineering & Structural Dynamics, 34, 12, pp. 1489-1511, (2005)

[4]

Lignos D G., Sidesway collapse of deteriorating structural systems under seismic excitations, (2008)

[5]

Baber T T, Noori M N., Random vibration of degrading pinching systems[J], ASCE Journal of Engineering Mechanics, 111, 8, pp. 1010-1026, (1985)

[6]

Yu B, Ning C L, Li B., Hysteretic model for shear-critical reinforced concrete columns, Journal of Structural Engineering, 142, 9, (2016)

[7]

Yu Bo, Li Chang-jin, Wu Ran-li, Asymmetric restoration force model and parameter identification of reinforced concrete columns, Engineering Mechanics, 34, 2, pp. 153-161, (2017)

[8]

Guo Yu-rong, Pan Hong-jun, An improved BWBN model and its parameter identification suitable for variable axial force column mixing test, Journal of Railway Science and Engineering, 18, 11, pp. 2988-2997, (2021)

[9]

Gu Xiang-lin, Cai Mao, Lin Feng, Study on behavior of RC columns subjected to earthquake, Engineering Mechanics, 27, 11, pp. 160-165, (2010)

[10]

Wang Jia-chun, Yan Pei-yu, The probability of steel corrosion in reinforced concrete in marine environment [J], Journal of Jilin University (Engineering and Technology Edition), 44, 2, pp. 352-357, (2014)

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