| 减震体系梁桥在地震与爆炸组合作用下的性能研究 |
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| 引用本文： | 王凤鸣,袁万城.减震体系梁桥在地震与爆炸组合作用下的性能研究[J].济南交通高等专科学校学报,2014(4):42-47. |
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| 作者姓名： | 王凤鸣 袁万城 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室,上海200092 |
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| 基金项目： | 国家自然科学基金资助项目（52178376,51478339）;土木工程防灾国家重点实验室基金资助项目（SLDRCE14-B-14） |
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| 摘 要： | 以某减震体系梁桥为研究对象，通过比较分析地震荷载单独作用和地震与爆炸组合作用下墩底的弯矩和支座的最大位移及残余位移，研究爆炸冲击对地震中受损的桥梁构件的影响。结果表明，地震后的爆炸冲击会瞬时增大桥墩的弯矩甚至使其屈服，导致屈服墩墩顶的支座残余位移增大50％以上。
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| 关 键 词： | 地震 爆炸 屈服 组合作用 |
Research on the Performance Analysis of Girder Bridge with Seismic Isolation System Under the Combination of Earthquake and Explosion |
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| WANG Feng-ming,YUAN Wan-cheng.Research on the Performance Analysis of Girder Bridge with Seismic Isolation System Under the Combination of Earthquake and Explosion[J].Journal of Jinan Communications College,2014(4):42-47. |
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| Authors: | WANG Feng-ming YUAN Wan-cheng |
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| Institution: | (State Key Laboratory for Disaster Reduction of Civil Engineering, Tongji University, Shanghai 200092, China ) |
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| Abstract: | Taken an girder bridge with seismic isolation system as the research object, through analyzing the bending moment at the bottom of piers, the maximum displacement and residual displacement under earthquake compared to the combination of earthquake and explosion, the effect of blast to the damaged bridge structures the earthquake is studied. The result shows that the blast could magnify the bending moment of piers instantly and even make them yield, which leads to an over 50% increase in the displacement of bearings at the top of the yielded piers. |
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| Keywords: | earthquake blast yield combination effect |
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