双阶自复位防屈曲支撑滞回性能参数分析

双阶自复位防屈曲支撑滞回性能参数分析

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传统防屈曲支撑（BRB）在小震下仅为结构提供刚度不提供阻尼，在大震下易产生较大残余变形。为弥补BRB的上述缺陷，提出一种新型双阶自复位防屈曲支撑（DY-SCBRB），在小震下支撑提前屈服耗能，为结构提供附加阻尼，在大震下支撑进一步耗能并为结构提供复位能力。通过对DY-SCBRB的构造分析，厘清支撑工作原理并建立支撑力-位移滞回关系恢复力模型，支撑双阶耗能特性和自复位能力得到了有效验证；采用ABAQUS软件对DY-SCBRB进行静力加载，分析与验证其滞回性能，找到支撑第一刚度比<inline-formula><alternatives><math xmlns:mml...

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Bibliographic Details
Main Authors: 王涛, 潘雨桐, 孟丽岩, 刘吉胜, 孔涛
Format: Article
Language:zho
Published: Editorial Department of Progress in Steel Building Structures, Tongji University 2024-12-01
Series:Jianzhu Gangjiegou Jinzhan
Subjects:
自复位防屈曲支撑
双阶屈服
恢复力模型
滞回性能
参数分析
Online Access:http://steelpro.tongji.edu.cn/thesisDetails#10.13969/j.cnki.cn31-1893.2024.12.004
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Summary:传统防屈曲支撑（BRB）在小震下仅为结构提供刚度不提供阻尼，在大震下易产生较大残余变形。为弥补BRB的上述缺陷，提出一种新型双阶自复位防屈曲支撑（DY-SCBRB），在小震下支撑提前屈服耗能，为结构提供附加阻尼，在大震下支撑进一步耗能并为结构提供复位能力。通过对DY-SCBRB的构造分析，厘清支撑工作原理并建立支撑力-位移滞回关系恢复力模型，支撑双阶耗能特性和自复位能力得到了有效验证；采用ABAQUS软件对DY-SCBRB进行静力加载，分析与验证其滞回性能，找到支撑第一刚度比<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">1</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M001.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M001c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>、第二刚度比<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">2</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M002.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M002c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>、复位比<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M3"><msub><mrow><mi>α</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M003.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M003c.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic></alternatives></inline-formula>和屈服位移比<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M4"><msub><mrow><mi>α</mi></mrow><mrow><mi mathvariant="normal">y</mi><mi mathvariant="normal">c</mi></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M004.jpg"><?fx-imagestate width="3.47133350" height="3.21733332"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M004c.jpg"><?fx-imagestate width="3.47133350" height="3.21733332"?></graphic></alternatives></inline-formula>对DY-SCBRB滞回性能的影响规律，给出支撑性能参数的取值建议，研究结果表明：DY-SCBRB不仅具有显著的双阶耗能特性，可以实现不同水平地震下的全阶段耗能，而且自复位能力强，能够大大减小结构的震后残余变形；增大<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M5"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">1</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M001.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M001c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>和<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M6"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">2</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M002.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M002c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>可以提高支撑最大承载力，<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M7"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">1</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M007.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M007c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>和<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M8"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">2</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M008.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M008c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>越小，支撑耗能能力越强，<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M9"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">1</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M007.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M007c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>和<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M10"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">2</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M010.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M010c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>的变化对支撑初始刚度和复位能力无影响，<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M11"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">1</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M011.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M011c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>和<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M12"><msub><mrow><mi>β</mi></mrow><mrow><mn mathvariant="normal">2</mn></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M008.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M008c.jpg"><?fx-imagestate width="2.96333337" height="3.89466691"?></graphic></alternatives></inline-formula>分别建议取0.78~1.58和0.006~0.014；增大<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M13"><msub><mrow><mi>α</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M013.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M013c.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic></alternatives></inline-formula>能够提高支撑初始刚度和复位能力，减小<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M14"><msub><mrow><mi>α</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M014.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M014c.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic></alternatives></inline-formula>有利于增强支撑在小震下的耗能能力，<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M15"><msub><mrow><mi>α</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M015.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M015c.jpg"><?fx-imagestate width="2.62466669" height="3.21733332"?></graphic></alternatives></inline-formula>建议取0.75~1.25；<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M16"><msub><mrow><mi>α</mi></mrow><mrow><mi mathvariant="normal">y</mi><mi mathvariant="normal">c</mi></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M016.jpg"><?fx-imagestate width="3.47133350" height="3.21733332"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M016c.jpg"><?fx-imagestate width="3.47133350" height="3.21733332"?></graphic></alternatives></inline-formula>越小，支撑综合抗震性能越好，<inline-formula><alternatives><math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M17"><msub><mrow><mi>α</mi></mrow><mrow><mi mathvariant="normal">y</mi><mi mathvariant="normal">c</mi></mrow></msub></math><graphic specific-use="big" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M017.jpg"><?fx-imagestate width="3.47133350" height="3.21733332"?></graphic><graphic specific-use="small" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="alternativeImage/6FB667C2-6ECF-4fe5-847C-5AEDC664F147-M017c.jpg"><?fx-imagestate width="3.47133350" height="3.21733332"?></graphic></alternatives></inline-formula>建议取0.5~1.5。
ISSN:1671-9379

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