复杂荷载共同作用下斜坡上单桩承载特性研究

Study on bearing capacity of the single pile on slope under complex loads

利用ABAQUS软件对竖向及水平荷载共同作用下斜坡上单桩进行数值模拟,研究桩的荷载传递与变形特点。分析结果表明,在先施加竖向荷载再施加水平荷载情况下,竖向荷载的增大能有效减小桩顶侧移、降低桩身弯矩,且在竖向荷载一定的情况下,桩顶沉降及侧移随水平荷载的增大而增大;土质较好情况下竖向荷载对桩顶侧移的有利影响比土质较差情况下竖向荷载对桩顶侧移的有利影响大。

To study the load transfer and deformation characteristics of the pile, the software ABAQUS was used to carry out the numerical simulation on the single pile on slope under complex loads of vertical loads and horizontal loads. The results show that when the vertical load is applied earlier than the horizontal load, the lateral displacement on the top of the pile and the bending moment of the pile can be effectively reduced owe to increase of the vertical load, and when the vertical load is fixed, the settlement and the lateral displacement on the top of the pile increase with the increase of the horizontal load. Under condition of good soil, the beneficial effect of the vertical load on the lateral displacement on the top of the pile is larger than that of under the condition of poor soil.