| 装配式混凝土金属消能减震连接体系抗震性能分析研究 |
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| 引用本文： | 李哲明,吴从晓,黄青青,吴从永.装配式混凝土金属消能减震连接体系抗震性能分析研究[J].西北地震学报,2019,41(3):679-687. |
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| 作者姓名： | 李哲明 吴从晓 黄青青 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,广州大学土木工程学院, 广东 广州 510006;广东技术师范学院天河学院, 广东 广州 510540,广东技术师范学院天河学院, 广东 广州 510540,广州大学土木工程学院, 广东 广州 510006 |
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| 基金项目： | 国家重点研发计划项目（2017YFC0703600）；广州市属高校科研项目（12016307）；广州市珠江科技新星专项（1517000272） |
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| 摘 要： | 为了研究装配式混凝土金属消能减震连接体系的抗震性能,对金属消能减震连接体系和普通预制装配式框架进行了数值仿真分析,分析了消能器不同设计参数对该体系抗震性能的影响。分析结果表明:金属消能减震连接体系的抗震性能优于普通预制装配式框架,屈服位移有显著提高,较好的延缓了梁端的破坏,对梁端保护作用明显,并且有效的解决了梁端后浇区施工困难的问题;金属消能器腹板高度越小耗能效果越好,但初始刚度及承载力也越小;翼缘板厚度越小消能器越早屈服耗能,但过小的翼缘板厚度会导致耗能能力不足,并且应变过大会导致其与梁柱连接部位被破坏;随着消能器高度的增加,构件跨中弯矩越大,也越早屈服耗能,但过大的消能器高度会导致其弯曲变形严重。
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| 关 键 词： | 装配式混凝土 消能减震 金属消能器 抗震性能 |
| 收稿时间： | 2018/3/7 0:00:00 |
Seismic Performance of the Connection System of Precast Concrete with a Metallic Energy Dissipator |
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| LI Zheming,WU Congxiao,HUANG Qingqing and WU Congyong.Seismic Performance of the Connection System of Precast Concrete with a Metallic Energy Dissipator[J].Northwestern Seismological Journal,2019,41(3):679-687. |
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| Authors: | LI Zheming WU Congxiao HUANG Qingqing and WU Congyong |
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| Institution: | School of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China,School of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China;Tianhe College, Guangdong Polytechnic Normal University, Guangzhou 510540, Guangdong, China,Tianhe College, Guangdong Polytechnic Normal University, Guangzhou 510540, Guangdong, China and School of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China |
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| Abstract: | To study the seismic performance of the connection system of precast concrete with a metallic damper, numerical simulation analyses of the connection system and ordinary prefabricated assembly frame are carried out; the influence of different design parameters of the damper on the seismic perfor-mance of the system is also analyzed. The connection system of the metallic damper shows better seismic performance than ordinary precast concrete frames, which could delay beam end damage, and effectively solve difficulties associated with construction of the subsequent concrete casting area at the beam end. Decreases in metallic damper height improve the energy dissipation ability but reduce the initial stiffness and bearing capacity. In addition, as the height of the energy dissipator increases, the larger the mid-span bending moment of the member and the earlier it yields. However, the oversize of the energy dissipator leads to severe bending deformation. |
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| Keywords: | precast concrete energy dissipation and vibration reduction metallic energy dissipator seismic performance |
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