浅谈单桩抗拔试验系数λ在软基中的确定方法

Shallow talk about the determination method of the uplift experimental coefficient λ of the single pile in soft foundation

由于抗拔力系数λ系经验取值,具有地域性、经验性和取值跨度大的特点,通过理论计算与抗拔试验结果的对比,探讨了λ的取值。试验结果表明:影响抗拔力的因素不仅仅是桩侧摩阻力,还包括桩身材料性质、泊松效应及桩周土的物理力学特性等。

Because the uplift coefficient A is given from experience, it is a regional and experiential value, which is varying at a large range. In this article, the selection of λ is discussed by the comparison of theoretical calculation and pull out test results. The test results indicate that the influential factors include pile side friction resistance, pile body material characters, poisson effect and the physical and mechanical behavior λ the soil around pile, etc.