| 加装SLVD的预制装配式混凝土消能减震框架抗震性能分析 |
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| 引用本文： | 吴从晓,李定斌,黄青青,张玉凤,吴从永.加装SLVD的预制装配式混凝土消能减震框架抗震性能分析[J].西北地震学报,2020,42(1):80-89. |
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| 作者姓名： | 吴从晓 李定斌 黄青青 张玉凤 吴从永 |
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| 作者单位： | 广州大学 土木工程学院, 广东 广州 510006;广东技术师范大学 天河学院, 广东 广州 510540,广州大学 土木工程学院, 广东 广州 510006,广东技术师范大学 天河学院, 广东 广州 510540,广州大学 土木工程学院, 广东 广州 510006,广州大学 土木工程学院, 广东 广州 510006 |
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| 基金项目： | 国家自然科学基金项目（51208128）；广州市珠江科技新星专项（1517000272）；广州市属高校科研项目（1201630171） |
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| 摘 要： | 为研究扇形铅黏弹阻尼器(SLVD)对预制装配式混凝土(PC)框架抗震性能的提升效果和其设计参数对PC框架抗震性能的影响规律,建立Abaqus精细化有限元模型,与试验结果对比验证模型正确性。对比加装SLVD的PC消能框架与RC框架抗震性能的差异,分析不同铅芯直径、橡胶硬度和扇形半径三个关键设计参数对PC消能框架抗震性能的影响。研究结果表明:SLVD在PC消能框架中起“耗能腋撑”作用;铅芯直径对整体结构抗震性能影响较大,随铅芯直径增大,结构刚度、承载能力和耗能能力均有所提高;橡胶硬度对整体结构抗震性能影响较小;铅芯屈服区域随扇形半径增大而减小,但可提高整体结构的承载能力。
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| 关 键 词： | 预制装配式混凝土框架 扇形铅黏弹阻尼器 数值模拟 抗震性能 |
| 收稿时间： | 2018/5/2 0:00:00 |
Seismic Performance of Precast Concrete Energy-dissipationFrame Structures with Sector Lead Viscoelastic Damper |
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| WU Congxiao,LI Dingbin,HUANG Qingqing,ZHANG Yufeng and WU Congyong.Seismic Performance of Precast Concrete Energy-dissipationFrame Structures with Sector Lead Viscoelastic Damper[J].Northwestern Seismological Journal,2020,42(1):80-89. |
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| Authors: | WU Congxiao LI Dingbin HUANG Qingqing ZHANG Yufeng and WU Congyong |
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| Institution: | College of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China;Tianhe College of Polytechnic Normal University, Guangzhou 510540, Guangdong, China,College of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China,Tianhe College of Polytechnic Normal University, Guangzhou 510540, Guangdong, China,College of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China and College of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China |
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| Abstract: | To further study the effect of the sector lead viscoelastic damper (SLVD) and the influence of its design parameters on the seismic performance of the energy-dissipation frame of precast concrete (PC), a refined Abaqus finite element model was established. The Abaqus model was validated by comparison with the experimental results. The differences in seismic performances between the PC energy-dissipation frame with SLVD and ordinary reinforced concrete frame were studied. Then, the influences of the key design parameters of SLVD-i.e., the lead diameter, rubber hardness, and fan radius-on the seismic performance of the PC energy-dissipation frame were analyzed. The results show that the SLVD plays a role of energy-dissipation haunch brace in the PC energy-dissipation frame. The bearing capacity, structural stiffness, and the energy-dissipation capacity will increase with the increase of the lead diameter, and this has a great influence on the seismic performance of PC energy-dissipation frames. The rubber hardness has little effect on the seismic performance of the structure. Moreover, with the increase of the fan radius, the bearing capacity and stiffness of the overall structure will be enhanced; however, the yield area of the lead will decrease. |
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| Keywords: | precast concrete frame sector lead viscoelastic damper numerical simulation seismic performance |
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