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[1] Xing Chenxi, Shu Yiwei, Zhu Xiaojie, Zhong Jian, et al. Multistage seismic damage constitutive model and parameter calibration of reinforced concrete columns [J]. Journal of Southeast University (English Edition), 2024, 40 (4): 386-395. [doi:10.3969/j.issn.1003-7985.2024.04.007]
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Multistage seismic damage constitutive model and parameter calibration of reinforced concrete columns()
钢筋混凝土柱多级地震损伤本构模型及参数标定
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
40
Issue:
2024 4
Page:
386-395
Research Field:
Civil Engineering
Publishing date:
2024-12-03

Info

Title:
Multistage seismic damage constitutive model and parameter calibration of reinforced concrete columns
钢筋混凝土柱多级地震损伤本构模型及参数标定
Author(s):
Xing Chenxi1;  Shu Yiwei2;  Zhu Xiaojie3;  Zhong Jian2;  3
1School of Law, Southeast University, Nanjing 210096, China
2School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
3Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
邢晨曦1;  疏一伟2;  朱小杰3;  钟剑2;  3
1东南大学法学院, 南京 210096; 2合肥工业大学土木与水利工程学院, 合肥 230009; 3东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Keywords:
moment-curvature analysis;  fragility analysis;  curvature ductility;  seismic multilevel damage;  trilinear model
弯矩曲率分析;  易损性分析;  曲率延性;  地震多级破坏;  三折线模型
PACS:
TU37
DOI:
10.3969/j.issn.1003-7985.2024.04.007
Abstract:
The road traffic network contains a large number of bridges, and calculating bridge damage using refined models demands significant time and resources. Therefore, developing a rapid evaluation method for the seismic capacity of regular bridges has become a crucial scientific challenge. This study presents an approach in which the ductile column is represented by a single degree-of-freedom model with elastic-plastic constitutive characteristics. Utilizing an uncoupled multivariate power function model and a plastic hinge model, a multidimensional power function model for section hierarchical curvature is constructed. Subsequently, the seismic multistage damage constitutive model(SMSD-CM)of member hierarchy is deduced and calibrated through theoretical methods. This model efficiently derives the trilinear constitutive model of components by inputting several crucial parameters. The SMSD-CM accurately simulates the hysteretic curve and displacement time-history under actual seismic conditions and aligns well with pushover analysis results from tests. The efficiency, ease of operation, and accuracy make the model suitable for rapid evaluation of the seismic capacity of regular bridges within the road traffic network.
道路交通网络中存在大量桥梁, 而基于精细模型的桥梁损伤计算对时间和资金要求很高, 因此研究常规桥梁抗震能力的快速评估方法已成为亟待解决的关键科学问题之一.将延性柱等效为具有弹塑性本构的单自由度模型.基于非耦合多变量幂函数模型(UCMV-PM)和塑性铰模型, 建立了截面分级曲率的多维幂函数模型, 然后通过理论方法推导和校准了构件分层的地震多阶段损伤本构模型(SMSD-CM).该模型通过输入几个关键参数, 可以有效地获得构件的三折线本构模型.SMSD-CM不仅可以准确地模拟实际地震波下的滞回曲线和位移时程, 而且与试验的推覆分析结果高度一致, 证明该模型高效、准确且易于操作, 可用于快速评估道路交通网络中常规桥梁的抗震能力.

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Memo

Memo:
Biographies: Xing Chenxi(1989—), female, doctor, lecture; Zhong Jian(corresponding author), male, doctor, associate professor, jzhong@hfut.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.52208468, 52178125), Fundamental Research Funds for Central Universities(No.2242023S20004).
Citation: Xing Chenxi, Shu Yiwei, Zhu Xiaojie, et al.Multistage seismic damage constitutive model and parameter calibration of reinforced concrete columns[J].Journal of Southeast University(English Edition), 2024, 40(4):386-395.DOI:10.3969/j.issn.1003-7985.2024.04.007.
Last Update: 2024-12-20