水平地震荷载下散体材料结构响应分析
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摘要
实验模拟了基础工程中散体材料褥垫层,研究了水平地震荷载作用下基础褥垫层中出现的似"巴西坚果效应"引起的级配破坏和不均匀震陷,分析了不同的振动时间、频率对其破坏的影响程度。结果表明,时间和频率对级配破坏深度影响显著。对水平地震荷载作用下出现的散体材料结构响应给出了理论解释,并探讨了散体材料结构中小颗粒下沉形式的概率模型。
The experiment simulated the ground treatment of cushion mehtod using the granular material in the foundational engineering,researched the gradation destruction and uneven collapse caused by the phenomenon similar to "Brazil Nut Effect",this phenomenon was generated when the foundation mattress cushion suffered the horizontal seismic force,analyzed the influence of various vibration time and various vibration frequency on the destruction extent.The results demonstrated that both the vibration time and the vibration frequency had notable effect on the destruction extent of the gradation.This article explained the construction response of the granular material when it suffered the horizontal seismic force and investigated the probability model of the micro aggregate's submergeing form in the granular material structure.
The experiment simulated the ground treatment of cushion mehtod using the granular material in the foundational engineering,researched the gradation destruction and uneven collapse caused by the phenomenon similar to "Brazil Nut Effect",this phenomenon was generated when the foundation mattress cushion suffered the horizontal seismic force,analyzed the influence of various vibration time and various vibration frequency on the destruction extent.The results demonstrated that both the vibration time and the vibration frequency had notable effect on the destruction extent of the gradation.This article explained the construction response of the granular material when it suffered the horizontal seismic force and investigated the probability model of the micro aggregate's submergeing form in the granular material structure.
引文
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