戈壁滩地基掏挖基础抗拔承载特性现场试验

Experimental study on the influence of foundation size parameters on the uplift bearing capacity of the spread foundation in gravel soil

以甘肃境内戈壁滩碎石土地基中的直柱、扩底两种结构型式的掏挖基础为研究对象,通过开展全尺寸试验基础的现场上拔试验,获得了试验基础的荷载位移曲线及地基土体的破坏模式,并分析得到基础抗拔承载力和侧摩阻力。

This paper selected the shaft and spread foundations in gravel soil located in Gansu province as the study objects. The 4 full-size test foundations under uplift load were tested,the load-displacement curves and the failure mode of test foundations were obtained. Through analysis the load-displacement curve variation characteristics,the uplift bearing capacity were achieved.