卢啸, 纪欣如. 考虑填充墙力学贡献的规范RC框架办公楼抗震韧性评价[J]. 工程力学, 2024, 41(9): 69-78. DOI: 10.6052/j.issn.1000-4750.2022.07.0607
引用本文: 卢啸, 纪欣如. 考虑填充墙力学贡献的规范RC框架办公楼抗震韧性评价[J]. 工程力学, 2024, 41(9): 69-78. DOI: 10.6052/j.issn.1000-4750.2022.07.0607
LU Xiao, JI Xin-ru. SEISMIC RESILIENCE EVALUATION OF A CODE-COMPLIANT RC OFFICE FRAME CONSIDERING THE INFILL WALL PARTICIPATION[J]. Engineering Mechanics, 2024, 41(9): 69-78. DOI: 10.6052/j.issn.1000-4750.2022.07.0607
Citation: LU Xiao, JI Xin-ru. SEISMIC RESILIENCE EVALUATION OF A CODE-COMPLIANT RC OFFICE FRAME CONSIDERING THE INFILL WALL PARTICIPATION[J]. Engineering Mechanics, 2024, 41(9): 69-78. DOI: 10.6052/j.issn.1000-4750.2022.07.0607

考虑填充墙力学贡献的规范RC框架办公楼抗震韧性评价

SEISMIC RESILIENCE EVALUATION OF A CODE-COMPLIANT RC OFFICE FRAME CONSIDERING THE INFILL WALL PARTICIPATION

  • 摘要: 提升建筑结构的抗震韧性是当前工程界抗震减灾的核心任务,根据现代规范设计的钢筋混凝土框架尽管具有较高的抗倒塌安全储备,但其韧性能力并不明确。既有研究在量化结构抗震韧性时,均仅采用结构构件的地震响应作为输入,忽略了非结构构件对整体结构地震响应的影响。针对上述问题,该文根据规范最低要求,设计一栋六层钢筋混凝土框架办公楼,并对其抗震韧性进行评价,明确了该办公楼的抗震韧性与《建筑抗震韧性评价标准》中建议的韧性目标的差距,揭示各类构件对结构韧性的影响。对比研究了填充墙力学贡献对办公楼抗震韧性的影响。研究结果表明:该六层框架办公楼的修复费用主要来源于填充墙和暖通类设备的修复工作,而修复时间主要由结构构件和填充墙的修复时间组成。填充墙的力学贡献会提高该办公楼的抗震韧性,减少结构构件和位移型非结构构件的修复费用和时间约50%,但对加速度型非结构构件的影响较小。

     

    Abstract: Improving seismic resilience of buildings is the core task of seismic mitigation in current engineering community. The resilience of reinforced concrete (RC) frames designed according to modern codes is not clear despite their high collapse margin ratios. Existing studies quantifying resilience have used only the seismic responses of structural components as input, ignoring the influence of nonstructural components on seismic responses of the global structure. In response to the aforementioned issues, a 6-story RC frame office building is designed according to the minimum requirements of the codes and its seismic resilience is evaluated, so that the gap between the actual resilience of office building and the resilience targets suggested in the Standard for Seismic Resilience Assessment of Buildings is clarified, and the influence of various types of components on structural resilience is also revealed. The effect of mechanical contribution of infill walls on the seismic resilience of the office building is comparatively studied. The results show that the repair cost of this 6-story frame office building mainly comes from infill walls and HVAC-type equipment, while the repair time mainly consists of repair time of structural components and infill walls. The infill wall participation increases the seismic resilience of the office building and reduces the repair cost and time of drift-sensitive components by about 50%, but has less effect on acceleration- sensitive components.

     

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