泡沫铝夹芯板加固山区跨泥石流桥墩抗冲结构优化研究

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (10) : 108-114.

论文

王东坡1，李伟2，何思明3,4，李新坡3,4，吴永3,4

作者信息 +

Study on the Structure Optimization of Aluminum Foam Sandwich Panel for Bridge Pier Reinforcement across Debris Flow in Mountain Areas

WANG Dongpo1, LI Wei2, HE Siming3,4, Li Xinpo3,4, Wu Yong3,4

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文章历史 +

摘要

在山区跨泥石流桥墩外表面覆盖一层缓冲防护结构可有效减小泥石流冲击危害，达到保护桥墩的目的。为此，将泡沫铝作为一种耗能缓冲材料引入桥墩抗泥石流冲击领域，并将其与钢板组合为复合夹芯结构，采用静力压载试验对五种不同结构形式夹芯板的力学性能进行分析。结果表明：泡沫铝夹芯结构在进入屈服强度后有宽而平的耗能缓冲应力平台，可吸收大量的冲击能量；对比五种夹芯结构的耗能性能，确定未加入竖向钢板的双层泡沫铝夹芯结构为最优化的结构形式。在此基础上开展优化结构在跨泥石流桥墩上的示范应用，工程应用效果显著。

Abstract

Buffer structure on bridge pier in mountain areas can effectively reduce the impact of debris flow, and protect the bridge pier. Therefore, as an energy dissipation buffer material, the material of aluminum foam combines with steel plate was introduced into the field of debris flow impact bridge pier. Mechanical properties of five different structural forms of sandwich panels were analyzed by static load test. The results show: The aluminum foam sandwich structure has a broad and flat energy buffer platform, which can absorb a large amount of impact energy; the double layer aluminum foam sandwich structure is the best structural form by comparing the energy dissipation performance of the five different structural forms of sandwich panels. On the basis of this, the optimized structure was applied to the bridge pier across the debris flow, and the effect of engineering application is remarkable.

导出引用

王东坡1，李伟2，何思明3,4，李新坡3,4，吴永3,4. 泡沫铝夹芯板加固山区跨泥石流桥墩抗冲结构优化研究[J]. 振动与冲击, 2016, 35(10): 108-114

WANG Dongpo1, LI Wei2, HE Siming3,4, Li Xinpo3,4, Wu Yong3,4. Study on the Structure Optimization of Aluminum Foam Sandwich Panel for Bridge Pier Reinforcement across Debris Flow in Mountain Areas[J]. Journal of Vibration and Shock, 2016, 35(10): 108-114

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