摘要
在软土地区进行基坑开挖易造成临近结构物变形过大的状况,工程上往往采用土体加固措施以满足设计要求.以某开挖基坑为对象,建立有限元模型,分工况进行数值分析,针对有无土体加固两种情况进行基坑开挖分析,对临近结构物变形、周围土体变形以及基坑自身变形进行分析比较.结果表明:对基坑周围部分土体进行加固可以明显减弱基坑开挖的影响,将变形控制在工程允许范围内.通过比较分析明确了土体加固在基坑设计时的重要性,为以后的工程设计提供了合理的参考方案.
In soft soil regions foundation excavation is generally associated with large deformation substances of adjacent structures, therefore soil reinforcement measure is often adopted to meet the engineering requirements. According to one foundation excavation pit, a finite element model is established for a better analysis of the deformation at different working conditions in this paper. Based on the foundation excavation with and without soil reinforcement, deformation of the adjacent structures, surrounding soil and foundation itself are comparatively analyzed by the numerical method. The results show that after reinforcing part of the soil around the foundation, it can significantly weaken the influence of excavation and control deformation within a permissible range of engineering. So the importance of soil reinforcement in foundation design is obtained, as can provide a reasonable reference for the later engineering designs.
出处
《青岛理工大学学报》
CAS
2014年第4期34-39,共6页
Journal of Qingdao University of Technology
关键词
基坑开挖
土体加固
变形
临近结构物
foundation excavation
soil reinforcement
deformation
adjacent structure
