机械与电子2025，Vol.43Issue(4)：19-26,8.
适用于山区岩石地形的输电线路膨胀地锚优化设计
Optimization Design of Expansion Anchor for Transmission Line Suitable for Mountainous Rock Terrain
摘要
Abstract
In order to improve the convenience and reliability of ground anchors for transmission line construction in mountainous and rocky terrain,a new type of expanding ground anchor is designed,and the structure of the expanding sleeve is optimized according to its stress conditions.Firstly,the basic structure of the new type of expanding ground anchor is introduced and force analysis is carried out,and the conditions for reliable anchoring of the ground anchor and the mechanism of stress concentration in the rock are discussed.Then,the parametric design of the expanding sleeve of the ground anchor is carried out by using the Bezier curve,and a multi-objective optimization model is established,and the optimal struc-tural parameters of the expanding sleeve are searched for based on the ISIGHT optimization platform com-bined with the multi-objective particle swarm algorithm to reduce the stress peaks of the rock wall.Fi-nally,the optimization results are verified by finite element simulation and test.The results show that the optimized ground anchor has a more uniform distribution of the extrusion load on the rock wall,and the maximum peak stress on the rock wall is reduced from 38.15 MPa to 10.87 MPa,which is lower than the uniaxial compressive strength of most of the soft rocks,thus improving the safe use range.The optimized ground anchor can withstand a pull-out force of more than 25 kN on a C30 concrete test platform and has a high anchorage reliability compared to existing shear expansion type rock anchors.关键词
山区岩石地形/输电线路/膨胀地锚/多目标优化/有限元仿真Key words
mountainous rocky terrain/transmission line/expansion ground anchor/multi-objective optimization/finite element simulation分类
机械工程引用本文复制引用
易莹鑫,吴晓鸣,杨国强,蔡亮,陈家驹,万书亭..适用于山区岩石地形的输电线路膨胀地锚优化设计[J].机械与电子,2025,43(4):19-26,8.基金项目
国网重庆市电力公司科技项目资助(2024渝电科技46#) （2024渝电科技46#）
