The anti-deformation performance of composite foundation of transmission tower in mining subsidence area
To improve the design method of foundation of transmission tower in mining subsidence area, and considering the interactions of transmission tower, ground and foundation, this paper presents a contrast research on the anti-deformation performance of two types of foundation (i.e. independent foundation and composite foundation with protecting apron) by finite element simulation. For valid simulation, we put forward the methods and principles of simplifying foundation and sand cushion. The research results indicate that, if the ground deforms in patterns of negative curvature, tension or compression, the structure stress and the horizontal support displacement of transmission tower can be reduced by 25% and 40% respectively by using composite foundation compared with independent foundation. If the ground deforms in pattern of positive curvature, the tower can be also protected by using the composite foundation instead of the independent ones, but the effect is less than that in the former three deformation patterns. The research findings provide the basis for improving the design method of transmission tower foundation in mining subsidence area.
mining subsidence area transmission tower composite foundation with protecting apron anti-deformation performance analysis
Yuan Guang-lin Li Shi-ming Xu Guo-an Si Wei Zhang Yun-fei Shu Qian-jin
School of Architecture &Civil Engineering, China University of Mining and Technology,Xuzhou 221008, Xuzhou Power Supply Company, Xuzhou 221006, China
国际会议
The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)
徐州
英文
1-6
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）