桩周土阻尼系数的研究

Study on soil damping constants around pile

通过对武汉某码头2根钢管桩动静载试验研究,探讨了桩周土阻尼系数对波动理论Smith法预测单桩静极限承载力和打桩时桩身最大锤击应力的影响规律.通过对打桩实测最大锤击应力的拟合,推荐了符合本地区地质条件的最佳土阻尼系数和吸着系数,其适用性在相同地质条件下的钢管桩中得到了证实.

Through the static and dynamic load experiments on two steel_pipe piles of a wharf engineering in Wuhan, the bearing capacity and maximum hammering stress of piles are estimated by Smith method of wave equation; and principles of soil damping constants' influence on them are also discussed. By fitting the maximum hammering stress obtained from experiments, the optimum soil damping constants, etc., which are proved to be applicable to steel_pipe piles in the similar geological ground, are suggested for Wuhan district.