[1]易莹鑫,吴晓鸣,杨国强,等.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,(04):19-26.
　YI Yingxin,WU Xiaoming,YANG Guoqiang,et al.Optimization Design of Expansion Anchor for Transmission Line Suitable for Mountainous Rock Terrain[J].Machinery & Electronics,2025,(04):19-26.
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适用于山区岩石地形的输电线路膨胀地锚优化设计()
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《机械与电子》[ISSN:1001-2257/CN:52-1052/TH]

卷:
期数:
2025年04期
页码:
19-26
栏目:
研究与设计
出版日期:
2025-04-25

文章信息/Info

Title:
Optimization Design of Expansion Anchor for Transmission Line Suitable for Mountainous Rock Terrain
文章编号:
1001-2257 ( 2025 ) 04-0019-08
作者:
易莹鑫 1 ; 吴晓鸣 1 ; 杨国强 1 ; 蔡 亮 1 ; 陈家驹 2 ; 万书亭 2
1. 国网重庆市电力公司建设分公司,重庆401121 ;
2. 华北电力大学河北省电力机械装备健康维护与失效预防重点实验室,河北保定071003
Author(s):
YI Yingxin1 ;  WU Xiaoming1 ;  YANG Guoqiang1 ;  CAI Liang1 ;  CHEN Jiaju2 ;  WAN Shuting2
(1. State Grid Chongqing Electric Power Company Construction Branch , Chongqing 401121 , China ;
2.Hebei Key Laboratory of Electric Machinery Health Maintenanceand Failure Prevention , North China Electric Power University , Baoding 071003 , China )
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
Keywords:
mountainous rocky terrain ;  transmission line ;  expansion ground anchor ;  multi-objective optimization ;  finite element simulation
分类号:
TH122 ;TU476
文献标志码:
A
摘要:
为了提高输电线路施工地锚在山区岩石地形使用的便捷性和可靠性,设计了一种新型膨胀地锚,并根据其受力情况对膨胀套筒进行了结构优化。首先介绍了新型膨胀地锚的基本结构并进行受力分析,探讨了地锚可靠锚固的条件和岩石的应力集中机理;然后利用 Bezier 曲线对地锚的膨胀套筒进行参数化设计并建立多目标优化模型,基于 ISIGHT 优化平台结合多目标粒子群算法寻找膨胀套筒的最优结构参数,进而降低岩石孔壁的应力峰值;最后利用有限元仿真和试验对优化结果进行验证。结果表明:优化后地锚对岩石孔壁的挤压载荷分布更加均匀,岩石孔壁上最大应力峰值由 38.15 MPa 降至 10.87 MPa ,低于大部分软质岩石的单轴抗压强度,提高了安全使用范围;优化后地锚在 C30 混凝土试验台上可以承受 25 kN以上拉拔力,与现有的剪式膨胀型岩石地锚相比具有更高的锚固可靠性。
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 structural parameters of the expanding sleeve are searched or based on the ISIGHT optimization platform combined with the multi-objective particle swarm algorithm to reduce the stress peaks of the rock wall. Finally , 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.

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备注/Memo

备注/Memo:
收稿日期: 2024-10-21
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# )
作者简介:易莹鑫 ( 1993- ),男,重庆人,硕士,工程师,研究方向为电力基建工程建设技术;吴晓鸣 ( 1997- ),男,重庆人,助理工程师,研究方向为电力基建工程建设技术;杨国强 ( 1983- ),男,重庆人,硕士,高级工程师,研究方向为输电线路智能施工技术;蔡 亮 ( 1983- ),男,重庆人,高级工程师,研究方向为电力基建工程建设技术;陈家驹 ( 1999- ),男,河北唐山人,硕士研究生,研究方向为输电线路工程;万书亭 ( 1970- ),男,山西长治人,博士,教授,博士研究生导师,研究方向为电力设备状态监测与故障诊断。
更新日期/Last Update: 2025-05-09