文章详细信息

输电线路杆塔树根桩基础受外荷载影响的分析
Analysis of Effect of External load on Root Pile Foundations of Transmission Poles and Towers

钟维军
ZHONG Weijun

1:宁波市电力设计院有限公司

摘要(Abstract)：

架空输电线路杆塔树根桩基础适用于软土地基,且占地面积小。通过有限元分析在软土地基下,树根桩基础的设计合理性及受外部荷载影响的能力。对距离承台边1 m,5 m,8 m处外部荷载的不同情况,分别进行有限元分析,得到相应的位移和应力,通过技术参数之间的比较分析表明,树根桩设计合理,且在承台边8 m范围内堆土对树根桩基础影响较大,在设计时需要同时考虑外部荷载的影响,8 m范围外对树根桩基础影响较小,可以采用一些构造措施来满足设计要求。
Root pile foundations of overhead transmission lines are applicable for soft soil ground and covers small area. By finite element, design reasonableness of root pile foundation in soft soil and its ability to bear external load are analyzed. The finite element analysis is respectively conducted on external load of places 1 m, 5 m and 8 m away from the bearing platform, from which the displacement and stress are concluded. It is indicated through comparison and analysis on technical parameters that the design of root pile is reasonable and the pile of dirt within 8m from the bearing platform have great impact on root pile foundation. Therefore, the external load should be taken into consideration during the design. The pile of dirt 8 m away from the bearing platform has little impact on root pile foundation, and therefore some structural measures can be adopted to meet the design requirement.

关键词(KeyWords)： 输电线路;杆塔;软土地基;树根桩;基础
transmission lines;poles and towers;soft soil foundation;root pile foundation;base

基金项目(Foundation):

作者(Author): 钟维军
ZHONG Weijun

DOI: 10.19585/j.zjdl.2014.03.005