摘要
文中通过数值模拟方法,对土岩地基中抗拔桩的破坏模式及其影响因素进行分析。结果表明,在垂直静载和动态荷载两种情况下,抗拔桩的受力和变形情况存在显著差异。具体而言,垂直静载下,抗拔桩的轴力约为80kN,弯矩约为20kN·m,竖向位移约为2mm,侧向位移约为1mm;动态荷载作用下,抗拔桩受力和变形更加显著。这表明荷载大小、土体性质和桩身形状等因素对抗拔桩的破坏模式具有重要影响。
In this paper,the failure mode and influencing factors of uplift pile in soil and rock foundation are analyzed by numerical simula-tion.The results show that there are significant differences in the stress and deformation of pull-out piles under vertical static load and dynamic load.Specifically,under vertical static load,the axial force of the pull-out pile is about 80 kN,the bending moment is about 20 kN·m,the vertical displacement is about 2 mm and the lateral displacement is about 1 mm.Under dynamic load,the force and deformation of uplift pile are more significant.It is shown that the load size,soil properties and pile shape have important effects on the failure mode of resisting pile pulling.
作者
胡经纬
Hu Jingwei(Construction Materials Guangzhou Engineering Survey Institute Co.Ltd.,Guangzhou,Guangdong 510000)
关键词
土岩地基
抗拔桩
数值模拟
破坏模式
影响因素
Soil-rock foundation
Uplift pile
Numerical simulation
Failure mode
Influencing factor
