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水下桩墩结构体系的动力模型试验研究

, PP. 97-102

Keywords: 动水效应,动力试验,破坏形态,自振频率,峰值加速度

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Abstract:

为了了解动水效应对桩墩结构体系的影响以及完善桥梁结构的抗震设计方法,进行了水下桩墩结构模型体系的动力试验。从模型设计、试验装置和加载工况3个方面介绍了试验的实施过程。通过观察模型破坏形态和分析试验结果,探讨了动水压力对结构体系动力特性和地震响应的影响并且检验了应用该动力模型试验研究的适用性。试验结果表明模型在水中的自振频率比无水时有所降低;动水压力的大小与输入的加速度峰值有关并且在相同的峰值加速度下沿模型从上到下依次递增;试验结果满足预期目的,证实了试验方案的有效性。

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