电力勘测设计Issue(5)：21-27,67,8.DOI:10.13500/j.dlkcsj.issn1671-9913.2025.05.004
山区输电线路上土下岩地层嵌岩桩设计优化
Design Optimizations on Rock-Socketed Piles in Rock Mass with Soil Cover Layer for Overhead Transmission Lines in Mountain Areas
李旭 1狄继红 2尹鹏1
作者信息
- 1. 电力规划总院有限公司,北京 100120
- 2. 中国兵器工业北方勘察设计研究院有限公司,河北 石家庄 050011
- 折叠
摘要
Abstract
Rock-Socketed piles have become the most typical foundations in rock mass with soil cover layer for overhead transmission lines in mountain areas in China.In this study,the design optimizations of vertical compression and uplift resistances as well as the lateral load baring performance of rock-socketed piles were investigated by using the methods of theoretical analysis,case study,and finite element numerical simulation.The results indicated that the design of vertical compression and uplift bearing capacities of rock-rocketed piles were relatively easy to be satisfied,and its optimization design mainly involved a reasonable determination of rock socketed depth for piles.When the soil cover layer was shallow,the designed lateral load bearing capacity of rock-socketed piles in rock masses were safe and reliable according to the current code of DL/T 5845-2021 in electric power industry.Consequently,the pile diameter design should be optimized according to the load and the thickness of the soil cover layer,striving to achieve the best match between the load,the thickness of the soil cover layer,and the pile diameter.However,when the thickness of the overlying soil layer was larger,it was necessary to investigate the current design calculation model in DL/T 5845-2021 for rock socketed piles,and the m method can be used to design the lateral load bearing performance of the rock-socketed piles.Therefore,the design results obtained by the two methods should be compared.关键词
输电线路/嵌岩桩/上土下岩地层/水平承载性能Key words
overhead transmission line/rock-socketed pile/rock mass with soil cover layer/lateral load bearing capacity分类
动力与电气工程引用本文复制引用
李旭,狄继红,尹鹏..山区输电线路上土下岩地层嵌岩桩设计优化[J].电力勘测设计,2025,(5):21-27,67,8.
