| 撞击荷载下耗能装置缓冲吸能特性研究 |
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| 引用本文： | 许琦,张南.撞击荷载下耗能装置缓冲吸能特性研究[J].重庆交通大学学报(自然科学版),2010,29(4):506-509. |
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| 作者姓名： | 许琦 张南 |
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| 作者单位： | 江苏省交通技师学院,路桥系,江苏,镇江212006;南京工业大学,土木工程学院,江苏,南京,210009;南京工业大学,土木工程学院,江苏,南京,210009 |
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| 摘 要： | 在桥墩表面设置耗能装置可提高城市立交桥桥墩和高架桥桥墩抵抗车辆撞击的能力。通过对配置耗能装置桥墩试件侧向撞击的试验研究,分析了耗能装置缓冲、吸能效果及其对桥墩动力响应的影响。研究表明,设置合理的耗能装置能够降低撞击力,达到良好的缓冲效果;同时能够吸收部分撞击能量降低桥墩的动力响应。撞击力可降低49%,跨中受拉钢筋峰值应变可降低63%,跨中位移峰值可降低75.6%。
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| 关 键 词： | 耗能装置 缓冲效果 吸能特性 撞击力 桥墩 动力响应 |
Research on Buffer Effect and Energy Absorption Capacity of Buffers under Impact Loading |
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| XU Qi,ZHANG Nan.Research on Buffer Effect and Energy Absorption Capacity of Buffers under Impact Loading[J].Journal of Chongqing Jiaotong University,2010,29(4):506-509. |
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| Authors: | XU Qi ZHANG Nan |
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| Institution: | XU Qi1,2,ZHANG Nan2 (1.Highway , Bridge Department,Jiangsu Traffic Technician College,Zhenjiang 212006,Jiangsu,China,2.College of Civil Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Installing buffer on pier surface could be employed to increase the anti-vehicle-crash capacity of viaduct bridge and overpass bridge.The buffer effect and energy absorption capacity were analyzed based on lateral impact test of reinforced concrete pier specimen.The influence of buffer on dynamic performance of pier was also analyzed.The test results have proven that impact force and dynamic performance of pier can be greatly reduced by installing buffers for proper design can lead to favorable buffer effec... |
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| Keywords: | buffer buffer effect energy absorption capacity impact force pier dynamic response |
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