摘要
为了解车辆段中的管桩和高压旋喷桩临近三桩基础施工时其三桩基础的承载力变化规律。文中通过有限元软件,对三桩基础周围的桩数量以及横向间距的影响进行研究。研究结果表明,三桩基础周围的桩基数量会在一定程度上提高三桩基础的侧摩阻力,从而提高三桩基础的承载力;随着桩与三桩基础距离的增大,对于三桩基础的承载力影响越小,当距离大于4.5m时,其影响几乎可以忽略不计,研究成果可以为类似工程设计提供借鉴。
In order to understand the bearing capacity of pipe piles and high-pressure rotary blast piles in the vehi⁃cle depot when they are close to the construction of the three pile foundations.The influence of pile number and lat⁃eral spacing around the three-pile foundation is studied by finite element software.The results show that the pile foundations around the three pile foundations increase the side friction resistance of the three pile foundations to a certain extent,thereby improving the bearing capacity of the three pile foundations.With the increase of the distance between the pile and the three pile foundations,the impact on the bearing capacity of the three pile foundations be⁃comes small,and the impact is almost negligible when the distance is greater than 4.5m.The research results may provide the reference for similar engineering designs.
作者
孙旭
SUN Xu(China Railway 16th Bureau Group Beijing Metro Engineering Construction Co.,Ltd.,Beijing 101100,China)
出处
《低温建筑技术》
2023年第12期120-123,共4页
Low Temperature Architecture Technology
关键词
高压旋喷桩
三桩基础
承载力极限值
high-pressure rotary jet pile
three-pile foundation
ultimate bearing capacity
