| 循环荷载作用下SMA-PSRCW结构力学性能影响因素分析 |
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| 引用本文： | 裴强,崔晓波,崔迪,吴聪.循环荷载作用下SMA-PSRCW结构力学性能影响因素分析[J].地震工程与工程振动,2021,41(1):25-34. |
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| 作者姓名： | 裴强 崔晓波 崔迪 吴聪 |
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| 作者单位： | 大连大学建筑工程学院,辽宁大连116622;大连交通大学土木工程学院,辽宁大连116028 |
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| 基金项目： | 国家自然科学基金项目(51878108,51378085);辽宁省博士科研启动基金项目(20170520299);辽宁省重点研发计划指导计划项目(2019JH8/10100091)。 |
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| 摘 要： | 为了研究形状记忆合金(SMA)连接件对半刚接钢框架内填钢筋混凝土墙结构(PSRCW结构)受力性能的影响情况,在已有试验研究的基础上,建立了SMA-PSRCW结构的计算模型,对结构在循环荷载作用下的整体受力性能进行了数值模拟研究,考虑了配筋率、混凝土强度、内填墙厚度以及连接件布置位置和数量等因素对结构的滞回性能、骨架曲线、刚度退化、耗能能力及等效黏滞阻尼系数等力学性能的影响,并根据SMA连接件所承担的荷载比例分析了它在PSRCW结构中的传力机理。结果表明:增大配筋率、提高混凝土强度、增大内填墙厚度以及增加连接件的数量都可以提高结构的极限承载力和抗侧刚度,但上述影响因素增大或增加到一定程度后,等效黏滞阻尼系数反而会下降。此外,混凝土强度和内填墙厚度的变化对试件极限承载力的影响更为显著;相比于竖向连接件,水平方向连接件对结构的承载力和耗能能力的影响起主要作用。因此,进行SMA-PSRCW设计时,在保证结构承载力和抗侧刚度的情况下,应综合考虑耗能能力来确定结构的各项参数。
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| 关 键 词： | 形状记忆合金 半刚接 连接件 滞回性能 数值模拟 参数分析 |
Analysis of influence factors on mechanical properties of SMA-PSRCW structure under cyclic loading |
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| PEI Qiang,CUI Xiaobo,CUI Di,WU Cong.Analysis of influence factors on mechanical properties of SMA-PSRCW structure under cyclic loading[J].Earthquake Engineering and Engineering Vibration,2021,41(1):25-34. |
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| Authors: | PEI Qiang CUI Xiaobo CUI Di WU Cong |
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| Institution: | (School of Civil Engineering and Architecture,Dalian University,Dalian 116622,China;School of Civil Engineering,Dalian Jiaotong University,Dalian 116028,China) |
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| Abstract: | To investigate the influence of shape memory alloy(SMA)connectors on the mechanical properties of semi-rigid steel frame infilled with reinforced concrete wall(PSRCW structure),the effect of SMA connector on the mechanical properties of PSRCW structure was studied.On the basis of the existing experimental research,the calculation model of SMA-PSRCW structure based on SMA connectors is established,and the overall mechanical performance of the structure under cyclic load is studied by using numerical simulation method.The factors such as reinforcement ratio,concrete strength,thickness of infilled wall,arrangement position and number of connectors are taken into account for the hysteretic performance,skeleton curve and rigidity degradation,energy dissipation capacity and equivalent viscous damping coefficient.Meanwhile,the force transfer mechanism of SMA connectors in PSRCW structure is analyzed according to the load ratio of SMA connectors.The results show that the ultimate bearing capacity and lateral stiffness of the structure can be improved by increasing the reinforcement ratio,the concrete strength,the thickness of infilled wall and the number of connectors.However,the equivalent viscous damping coefficient will decrease when the above factors increase to a certain extent.In addition,the influence of the concrte strength and the thickness of infilled wall on the ultimate bearing capacity is more significant.Compared with vertical connectors,horizontal connectors play a major role in the structure′s bearing capacity and energy dissipation capacity.Therefore,in the design of SMA-PSRCW,under the condition of ensuring the bearing capacity and the lateral stiffness of the structure,the energy dissipation capacity should be considered to determine the parameters of the structure. |
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| Keywords: | shape memory alloy semi-rigid connector hysteresis behavior numerical simulation parameter analysis |
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