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基于构件损伤的屈曲约束支撑钢框架结构地震倒塌易损性分析

王博,  徐强,  田勤虎,  韩协,  王治海

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文章导航 > 工业建筑  > 2021 >  51(3): 85-90
王博, 徐强, 田勤虎, 韩协, 王治海. 基于构件损伤的屈曲约束支撑钢框架结构地震倒塌易损性分析[J]. 工业建筑, 2021, 51(3): 85-90. doi: 10.13204/j.gyjzG20071204
引用本文: 王博, 徐强, 田勤虎, 韩协, 王治海. 基于构件损伤的屈曲约束支撑钢框架结构地震倒塌易损性分析[J]. 工业建筑, 2021, 51(3): 85-90. doi: 10.13204/j.gyjzG20071204
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WANG Bo, XU Qiang, TIAN Qinhu, HAN Xie, WANG Zhihai. ANALYSIS ON COLLAPSE VULNERABILITY OF BRB STEEL FRAMES BASED ON COMPONENT DAMAGE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(3): 85-90. doi: 10.13204/j.gyjzG20071204
Citation: WANG Bo, XU Qiang, TIAN Qinhu, HAN Xie, WANG Zhihai. ANALYSIS ON COLLAPSE VULNERABILITY OF BRB STEEL FRAMES BASED ON COMPONENT DAMAGE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(3): 85-90. doi: 10.13204/j.gyjzG20071204
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基于构件损伤的屈曲约束支撑钢框架结构地震倒塌易损性分析

doi: 10.13204/j.gyjzG20071204

  • 1. 长安大学地质工程与测绘工程学院, 西安 710054;

  • 2. 陕西省地震局, 西安 710068;

  • 3. 中铁第一勘察设计院集团有限公司, 西安 710043;

  • 4. 成都基准方中建筑设计有限公司, 成都 610067

基金项目: 

国家自然科学基金项目（41807243；41877250）；中央高校基本科研业务费资助项目（300102261202；300102268206：300102261102）。

详细信息
    作者简介:

    王博,男,1995年出生,硕士研究生。

    通讯作者:

    徐强,男,1986年出生,硕士生导师,博士后,讲师,538270385@163.com。

ANALYSIS ON COLLAPSE VULNERABILITY OF BRB STEEL FRAMES BASED ON COMPONENT DAMAGE

  • 1. Geological Engineering and Surveying Engineering College, Chang'an University, Xi'an 710054, China;

  • 2. Earthquake Administration of Shaanxi Province, Xi'an 710068, China;

  • 3. China Railway First Survey and Design Institute Group Co., Ltd., Xi'an 710043, China;

  • 4. Chengdu Benchmark Fangzhong Architectural Design Co., Ltd., Chengdu 610067, China

    摘要
  • 摘要: 构件参与结构抗震的贡献不同，传统结构地震易损性评价指标不能反映此特点，亦不能准确合理评价结构在地震作用下的抗倒塌能力。地震作用下，防屈曲支撑钢框架结构各构件参与抗震方式不同，防屈曲支撑通过轴向变形耗散地震能量，梁端通过弯曲变形耗散地震能量，框架柱通过适当变形保证结构不失稳倒塌。为此，针对防屈曲支撑钢框架整体结构提出基于构件损伤的易损性分析评价指标和方法。通过定义结构极限状态，对比基于不同评价指标的防屈曲支撑框架结构地震易损性分析结果。结果显示：基于单一评价指标的评价方法不能准确评价结构抗倒塌能力，防屈曲支撑钢框架结构虽然由于防屈曲支撑的优越变形能力使得结构耗能能力提升，但梁端仍可能发生破坏。
    Abstract: The contribution of structural members in structural seismic resistance is different. Traditional structural seismic indicators of vulnerability evaluation cannot reflect that characteristics, nor can it accurately and reasonably evaluate the collapse resistance of structures under earthquake action. Under the action of an earthquake, each member of buckling-restrained braces (BRB) steel frames participates in earthquake resistance in different ways. Buckling-restrained braces dissipate seismic energy through axial deformation, beam ends dissipate seismic energy through bending deformation, and frame columns ensure that structures do not collapse through appropriate deformation. The evaluation index and method of vulnerability analysis based on structure member damage for the overall structure of buckling-restrained braced steel frame were proposed. The structural limit state was defined, and the results for seismic vulnerability analysis of buckling-restrained braced steel frame based on different evaluation indicators were compared. The results showed that although buckling-restrained braced steel frames had improved energy-dissipating capacity of structures due to superior deformation capacity of buckling-restrained braces, damaged still occured at beam ends.
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出版历程
  • 收稿日期:  2020-10-20
  • 网络出版日期:  2021-07-17

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