| 引用本文: | 张文元,李鸿维,曾立静,赵增阳.中心支撑－钢框架结构抗震性能和设计方法综述[J].哈尔滨工业大学学报,2021,53(4):1.DOI:10.11918/202004062 |
| ZHANG Wenyuan,LI Hongwei,ZENG Lijing,ZHAO Zengyang.Review of seismic performance and design methods for steel concentrically braced frames[J].Journal of Harbin Institute of Technology,2021,53(4):1.DOI:10.11918/202004062 |
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| 中心支撑－钢框架结构抗震性能和设计方法综述 |
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张文元1,2,李鸿维1,2,曾立静1,2,赵增阳1,2
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(1.结构工程灾变与控制教育部重点实验室(哈尔滨工业大学),哈尔滨 150090; 2.土木工程智能防灾减灾工业和信息化部重点实验室(哈尔滨工业大学),哈尔滨150090)[HJ1.1mm]
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| 摘要: |
| 为推动非双重体系中心支撑－钢框架结构的应用,总结了国内外关于中心支撑－钢框架结构抗震性能的研究成果,对比了国际主流规范在抗震设计方法上的差异。指出中国现行规范存在的不足,认为中心支撑－钢框架结构的抗震设计未充分考虑支撑及其连接的低周疲劳寿命,对高延性和低延性的结构不应采用相同的抗震设计方法,低延性中心支撑－钢框架结构在应用中不应忽视梁柱节点半刚接、柱子的竖向连续性以及柱脚螺栓群的半刚接等因素对其抗倒塌储备能力的贡献。据此指出,今后研究中应进一步探析支撑构件及其节点的低周疲劳寿命,建立基于低周疲劳寿命匹配关系的构件和连接节点的抗震设计准则。应分析高延性中心支撑－钢框架结构的抗震能力曲线及低周疲劳损伤情况,得到地震力折减水平及低周疲劳累积滞回耗能需求规律,将承载力和能量设计相结合,提出更为合理的抗震计算方法。应量化各类地震抗倒塌储备能力,形成低延性中心支撑－钢框架结构更为合理的抗震设计方法,扩展其使用范围。 |
| 关键词: 中心支撑－框架结构 抗震设计方法 低周疲劳寿命 储备能力 文献综述 |
| DOI：10.11918/202004062 |
| 分类号:TU391 |
| 文献标识码:A |
| 基金项目:国家自然科学基金面上项目(51978206) |
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| Review of seismic performance and design methods for steel concentrically braced frames |
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ZHANG Wenyuan1,2,LI Hongwei1,2,ZENG Lijing1,2,ZHAO Zengyang1,2
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(1.Key Lab of Structural Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin 150090, China; 2.Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters (Harbin Institute of Technology), Ministry of Industry and Information Technology, Harbin 150090, China)
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| Abstract: |
| This paper presents a state-of-the-art review on recent researches of seismic performance of steel concentrically braced frames and the seismic design methods in codes of practice of China and other countries, aiming at facilitating a safer and more cost-effective design and application of steel concentrically braced frames with single lateral resistant system. Limitations in current Chinese codes are discussed. It is pointed out that the low cycle fatigue performance of braces and their connections is not fully considered for steel concentrically braced frames, and there is no difference between the seismic design methods for structures with high ductility and low ductility. The contributions of semi-rigid connection of beam-column joints, vertical continuity of columns, and semi-rigid connection of column base bolts on the reserved capacities of steel concentrically braced frames with low ductility are neglected. To address these problems, following suggestions have been put forward. It is necessary to further investigate the low cycle fatigue life of braces and their connections and establish the seismic design principle to better match the low cycle fatigue life of braces and their connections. The capacity curve and low cycle fatigue damage of steel concentrically braced frames with high ductility should be analyzed to understand the laws of reduction level of seismic force and the demand of low cycle fatigue cumulative hysteresis energy. By combining force-based and energy-based design, a more reasonable seismic calculation method can be proposed. Structural reserved capacities for seismic resistance should be quantified to construct seismic design methods for steel concentrically braced frames with low ductility, so as to extend its application. |
| Key words: concentrically braced frames seismic design method low cycle fatigue life reserved capacities literature review |
