| 引用本文: | 李磊,王菲菲,代旷宇,于晓辉.面向抗震韧性评价的型钢混凝土柱易损性函数[J].哈尔滨工业大学学报,2025,57(1):24.DOI:10.11918/202312068 |
| LI Lei,WANG Feifei,DAI Kuangyu,YU Xiaohui.Fragility functions of steel reinforced concrete column for seismic resilience assessment[J].Journal of Harbin Institute of Technology,2025,57(1):24.DOI:10.11918/202312068 |
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| 摘要: |
| 为满足型钢混凝土（steel reinforced concrete,SRC）结构地震损失评估及抗震韧性评价的需求,建立SRC柱构件的地震易损性函数十分关键。本文首先基于文献调研,结合JGJ 138—2016《组合结构设计规范》,从国内外文献中筛选了227榀拟静力循环加载的SRC柱,建立标准化的SRC柱试验数据库。其次,考虑失效模式的差异性,将构件分为延性SRC柱和偏脆性SRC柱,并给出了不同类别的构件损伤等级划分标准及对应的修复方法。然后,以位移角为工程需求参数,分别提取了各构件对应不同损伤等级的位移角限值,采用FEMA P-58方法,建立了不同类别的SRC柱在各损伤等级下的易损性函数。最后,给出了与GB/T 38591—2020《建筑抗震韧性评价标准》相容的易损性函数参数表,并分析了抗震等级和轴压比对SRC柱易损性函数参数及易损性曲线的影响。最终,通过分析一幢型钢混凝土框架结构办公楼的抗震韧性,说明了所提出的易损性函数在抗震韧性评价中的作用。 |
| 关键词: 型钢混凝土柱 试验数据库 损伤状态 易损性函数 抗震韧性评价标准 |
| DOI：10.11918/202312068 |
| 分类号:TU398 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(1,2)；陕西省科技计划一般项目(2024SF-YBXM-672)；中国博士后基金面上项目(2023M733247) |
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| Fragility functions of steel reinforced concrete column for seismic resilience assessment |
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LI Lei1,2,WANG Feifei1,DAI Kuangyu3,YU Xiaohui4
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(1.School of Civil Engineering, Xian University of Architecture and Technology, Xian 710055, China; 2.State Key Lab of Green Building in Western (Xian University of Architecture and Technology), Xian 710055, China; 3.School of Civil Engineering, Zhengzhou University, Zhengzhou, 450001, China; 4.School of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, Guangxi, China)
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| Abstract: |
| To meet the needs of earthquake losses and structural seismic resilience evaluation, it is key to establish the seismic fragility functions. A database containing 227 SRC columns under repeated cyclic loads is established based on the existed experiments in this study. All the SRC columns satisfy the requirements of the Chinese ‘code for design of composite structures’(JGJ 138—2016). Considering the difference in failure model, the components are divided into ductile SRC columns and brittle SRC columns. The damage state classification criteria and corresponding repair methods for different groups are given. Then, the drift is taken as the engineering demand parameter (EDP), the drift limits of each column corresponding to different damage states are extracted based on the hysteresis information. After that, the fragility functions of SRC columns under different groups and damage states are developed using FEMA P-58 method. Finally, the table of fragility function parameters that compatible with the ‘standard for seismic resilience assessment of buildings’(GB/T 38591—2020) is given. The effects of seismic grade and axial load ratio on the fragility function parameters and fragility curve of SRC columns are compared. The role of the proposed fragility function in seismic resilience evaluation is demonstrated, by analyzing the seismic resilience of an SRC frame structure office building. |
| Key words: SRC column test database damage state fragility function standard for seismic resilience assessment |
