首页> 外文会议>Conference on geotechnical risk assessment and management;GeoRisk 2011 >A Parametric Study on Factors Affecting Ground Vibrations during Pile Driving through Finite Element Simulations
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A Parametric Study on Factors Affecting Ground Vibrations during Pile Driving through Finite Element Simulations

机译:通过有限元模拟对影响打桩过程中地面振动的因素进行参数研究

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Driven pile has often been used to provide loading support for civil infrastructure, but the induced ground vibration can cause damage to adjacent structures. The vibration risk associated with pile driving is often managed via monitoring ground vibrations that is quantified by peak particle velocity (PPV). Therefore, a rational approach to predict PPV is desired because the commonly used scaled-distance equations consider only the distance from driven piles and the input energy but ignore other important factors. To fulfill this knowledge gap, a finite element method based parametric study was performed to examine the influence of soil damping ratio, Young's Modulus of soil, and the number of loading pulses on ground vibrations due to pile driving. The results obtained from this study will aid geotechnical engineers in better managing the risk of pile driving to surrounding building by designing and executing a proper ground vibration monitoring plan.
机译:打入桩经常被用来为民用基础设施提供载荷支撑,但是感应到的地面振动会导致相邻结构的损坏。与打桩相关的振动风险通常是通过监视地面振动来管理的,该振动由峰值粒子速度(PPV)量化。因此,需要一种合理的方法来预测PPV,因为常用的比例距离方程式仅考虑到打桩的距离和输入能量,而忽略了其他重要因素。为了弥补这一知识空白,进行了基于有限元方法的参数研究,以检验土壤阻尼比,土壤杨氏模量以及加载脉冲对打桩引起的地面振动的影响。从这项研究中获得的结果将通过设计并执行适当的地面振动监测计划,帮助岩土工程师更好地管理打桩到周围建筑物的风险。

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