风化粉砂岩类地层钢板桩振动沉桩可行性分析

Vibro-Drivability of Steel Sheet Pile in Weathered Siltstones

振动锤沉桩是钢板桩施工最常采用的沉桩工艺,但在风化岩类地层采用振动锤施打钢板桩,目前,工程经验和理论研究均较缺乏。鉴于此,依托具体工程,采用纵向一维振动模型模拟钢板桩、Smith-viscous模型模拟动土阻力,考虑振动锤能量和锁口阻力不同,通过数值计算对比分析钢板桩的沉桩入土深度、贯入度等沉桩参数,分析结果可为振动锤选型及沉桩工艺优化提供依据。

Vibration hammer driving pile is the most commonly used technology in steel sheet pile construction,but vibration ha m mer driving steel sheet pile in weathered rock stratu m is lack of engineering experience and theoretical research at present. In view of this,relying on a specific project, the longitudinal one-dimensional vibration model is used to simulate the steel sheet pile and the Smithviscous model to simulate the dynamic soil resistance,through the numerical analysis of steel plate piles buried depth,penetration pile driving parameters,such as the results of the analysis for the selection of vibratory hammer and pile which provides the basis for process optimization.