LY315钢屈曲约束支撑耗能性能试验研究

杨璐, 卫璇, 施刚, 肖世勇

杨璐, 卫璇, 施刚, 肖世勇. LY315钢屈曲约束支撑耗能性能试验研究[J]. 工程力学, 2019, 36(1): 200-206. DOI: 10.6052/j.issn.1000-4750.2017.11.0879
引用本文: 杨璐, 卫璇, 施刚, 肖世勇. LY315钢屈曲约束支撑耗能性能试验研究[J]. 工程力学, 2019, 36(1): 200-206. DOI: 10.6052/j.issn.1000-4750.2017.11.0879
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YANG Lu, WEI Xuan, SHI Gang, XIAO Shi-yong. EXPERIMENT ON ENERGY DISSIPATION PERFORMANCE OF LY315 STEEL BUCKLING-RESTRAINED BRACES[J]. Engineering Mechanics, 2019, 36(1): 200-206. DOI: 10.6052/j.issn.1000-4750.2017.11.0879
Citation: YANG Lu, WEI Xuan, SHI Gang, XIAO Shi-yong. EXPERIMENT ON ENERGY DISSIPATION PERFORMANCE OF LY315 STEEL BUCKLING-RESTRAINED BRACES[J]. Engineering Mechanics, 2019, 36(1): 200-206. DOI: 10.6052/j.issn.1000-4750.2017.11.0879
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LY315钢屈曲约束支撑耗能性能试验研究

  • 1.

    北京工业大学建筑工程学院, 北京 100124;

  • 2.

    清华大学土木工程安全与耐久教育部重点试验室, 北京 100084;

  • 3.

    云南震安减震科技股份有限公司, 云南, 昆明 650211

基金项目: 北京市科技新星计划项目（2016117）
详细信息
    作者简介:

    卫璇(1992-),男,河南人,硕士生,主要从事钢结构研究(E-mail:weiyxmm@163.com);施刚(1977-),男,安徽人,教授,博士,博导,从事结构工程研究(E-mail:shigang@Tsinghua.edu.cn);肖世勇(1981-),男,云南人,机械工程师,工学学士,从事减震产品研究(E-mail:279657333@qq.com).

    通讯作者:

    杨璐(1982-),男,湖北人,教授,博士,博导,从事钢结构及施工技术研究(E-mail:lyang@bjut.edu.cn).

  • 中图分类号: TU352.1+1;TU317+.1

EXPERIMENT ON ENERGY DISSIPATION PERFORMANCE OF LY315 STEEL BUCKLING-RESTRAINED BRACES

  • 1.

    The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;

  • 2.

    Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China;

  • 3.

    Yunnan Quakesafe Seismic Isolation Technologies Co. Ltd, Kunming, Yunnan 650211, China

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    摘要
  • 摘要: 采用新型抗震结构用软钢LY315作为内核材料，设计加工了3根全钢型装配式屈曲约束支撑。对支撑进行了拉压往复加载试验，并对其力学性能进行分析，研究此类新型屈曲约束支撑的耗能性能。结果表明：支撑构造合理，滞回曲线饱满，耗能性能稳定；试件的最大位移延性系数均大于15，抗拉应变强化系数在1.21~1.29，等效粘性阻尼比在0.442~0.465，累积塑性变形均大于500倍的屈服位移；对试件的疲劳加载进行分析，各项参数均满足JGJ 297-2013《建筑消能减震技术规程》的要求，表明试件有良好的低周疲劳性能。
    Abstract: Three buckling-restrained braces (BRBs) assembled with section steel were designed using novel soft steel LY315 as the core material. Cyclic loading tests on three specimens were conducted to analyze the mechanical properties and the energy dissipation of the new type of BRBs. The results indicate that the structure of BRBs is reasonable and all specimens exhibit a full hysteretic curve and stable energy dissipation performance. The ultimate ductility coefficients of specimens were greater than 15. The strain hardening coefficients were between 1.21 and 1.29. The equivalent damping ratios were between 0.442 and 0.465. The cumulative plastic deformations were more than 500 times the yield displacement. The fatigue loading was analyzed. All performance parameters were able to meet the requirements in JGJ 297-2013 'Technical specification for seismic energy dissipation of buildings', indicating excellent low-cycle fatigue behavior of the BRBs.
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    • 参考文献(24)
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出版历程
  • 收稿日期:  2017-11-16
  • 修回日期:  2018-01-15
  • 刊出日期:  2019-01-28

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