[1]郭翔,刘硕,张延泰.基于多模态损伤模型的非对称混凝土结构地震损伤评定[J].常州大学学报(自然科学版),2025,37(01):76-84.[doi:10.3969/j.issn.2095-0411.2025.01.009]
　GUO Xiang,LIU Shuo,ZHANG Yantai.Seismic damage assessment of asymmetric reinforced concrete structures based on multi-mode damage model[J].Journal of Changzhou University(Natural Science Edition),2025,37(01):76-84.[doi:10.3969/j.issn.2095-0411.2025.01.009]
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基于多模态损伤模型的非对称混凝土结构地震损伤评定()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第37卷
期数:
2025年01期
页码:
76-84
栏目:
土木工程
出版日期:
2025-01-22

文章信息/Info

Title:
Seismic damage assessment of asymmetric reinforced concrete structures based on multi-mode damage model
文章编号:
2095-0411(2025)01-0076-09
作者:
郭翔1; 刘硕1; 张延泰2
1.常州大学 城市建设学院, 江苏 常州 213164; 2.南京林业大学 土木工程学院, 江苏 南京 210037
Author(s):
GUO Xiang1;  LIU Shuo1;  ZHANG Yantai2
1.School of Urban Construction, Changzhou University, Changzhou 213164, China; 2.College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
关键词:
非对称结构;  多模态;  地震;  损伤模型;  扭转
Keywords:
asymmetric structure;  multi-mode;  earthquake;  damage model;  torsion
分类号:
TU 3
DOI:
10.3969/j.issn.2095-0411.2025.01.009
文献标志码:
A
摘要:
为合理评估非对称混凝土结构的地震损伤,研究基于多模态损伤模型,根据三维非对称混凝土结构的模态特点,提出了非对称混凝土结构的计算方法以及混凝土结构的整体损伤组合方法,总结了非对称混凝土结构的损伤评定流程,并通过6层框架剪力墙算例模型对地震损伤进行分析和评定。结果表明,文中方法能够反映非对称混凝土结构的扭转损伤、各方向的平动损伤以及整体损伤状态。虽然地震动只作用在y方向上,但是由于剪力墙的非对称布置使得混凝土结构存在刚度偏心,在垂直地震动方向和扭转方向上都出现了响应和损伤,且非对称混凝土结构的整体损伤主要由扭转损伤控制。扭转效应是造成非对称混凝土结构在地震作用下破坏的关键因素,结构设计过程中一定要保证其抗扭性能。
Abstract:
To reasonably evaluate the seismic damage of asymmetric reinforced concrete structure, based on the multi-modal damage model and according to the modal characteristics of the three-dimensional asymmetric reinforced concrete structure, the damage index calculation method of the asymmetric reinforced concrete structure was put forward, as well as the overall damage combination method. Then the steps of asymmetric reinforced concrete structure damage evaluation are summed up. Using the example of the 6-story frame-shear wall structure, the damage of the reinforced concrete structure under earthquake is analyzed and evaluated by the proposed method. The results show that the proposed method can reflect the torsional damage, translational damage in all directions, and the overall damage state of the asymmetric reinforced concrete structure. Although the ground motion only acts in the y direction, the structure has a stiffness eccentricity due to the asymmetric arrangement of shear walls, and the asymmetric reinforced concrete structure has response and damage in both the vertical ground motion direction and the torsional direction. The overall damage of the asymmetric reinforced concrete structure is mainly controlled by the torsional damage. The torsional effect is the key factor that causes the failure of the asymmetric reinforced concrete structure in an earthquake. Thus, the torsional strength of the reinforced concrete structure has to be ensured in the structural design process.

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备注/Memo

备注/Memo:
收稿日期: 2024-06-02。
基金项目: 国家自然科学基金青年科学基金资助项目(52108457)。
作者简介: 郭翔(1989—), 男, 湖北当阳人, 博士, 讲师。E-mail: guoxiang2131@cczu.edu.cn
更新日期/Last Update: 1900-01-01