摘要
以西北地区某特高压直流输电线路工程的砂岩地质条件为前提,展开了单锚基础的竖向上拔静载荷试验和群锚基础的上拔+水平复合工况静载荷试验,阐明了单锚和群锚基础的破坏模式和承载性能,获得了极限抗拔承载力,并通过锚筋应变测试,研究了锚杆基础的内力分布规律和有效锚固深度,提出了砂岩地基岩石锚杆基础的设计参数,可为西北地区输电线路设计提供参考。
According to the sandstone geological conditions of ultra-high voltage direct current transmission line engineering in Northwest China,the vertical uplift static load test of single anchor foundation and the static load test of uplift+horizontal composite condition of group anchor foundation are carried out,the failure mode and bearing capacity of single anchor foundation and group anchor foundation are analyzed,and the ultimate pullout bearing capacity is obtained,through the anchor bar strain test,the internal force distribution law and effective anchoring depth of anchor foundation are studied.The design parameters of rock anchor foundation on sandstone foundation are put forward,which can provide reference for the design of transmission lines in Northwest China.
作者
王辉
杨超
马艳
侯鹏翔
Wang Hui;Yang Chao;Ma Yan;Hou Pengxiang(School of Civil Engineering,North Minzu University,Yinchuan 750021,China;Ningxia Electric Power Design Institute Co.,Ltd.,Yinchuan 750016,China)
出处
《山西建筑》
2021年第20期93-95,98,共4页
Shanxi Architecture
基金
宁夏高等学校科学技术研究项目资助(NGY2020066)
宁夏自然科学基金资助项目(2020AAC03226)
北方民族大学2019年校级一般项目(2019XYZTM06)
北方民族大学高层次引进人才启动基金项目(2019KYQD07)。
关键词
输电线路
岩石锚杆
基础
设计参数
transmission line
rock bolt
basis
design parameters
