Application of a new basalt fiber-reinforced polymer anchorage structure in the tunnel–slope system under rainfall action

作     者：TANG Lin WU Hong-gang WEI Hong FENG Kang RENG Guo-jun TANG Lin;WU Hong-gang;WEI Hong;FENG Kang;RENG Guo-jun

作者机构：College of Resources and Environmental EngineeringGuizhou UniversityGuiyang 550025China China Northwest Research Institute Co.Ltd.of CRECLanzhou 730070China College of Civil Engineering and ArchitectureSouthwest University of Science and TechnologyMianyang 621000China 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2023年第20卷第2期

页      面：570-584页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by the National Key R&D Program of China(Grant No.2018YFC1504901) Science and Technology Fund Program of Gansu Province for Young People(22JR5RA778) Science and Technology Development Project of China Railway 11th Bureau Group Corporation Limited(Grant No.2021-06) Gansu Province Youth Science and Technology Fund program,China(Grant No.21JR7RA739) Natural Science Foundation of Gansu Province,China(Grant No.21JR7RA738) Science and Technology Development Project of China Railway Research Institute Co.Ltd(2017-KJ008-Z008-XB) 

主　　题：BFRP anchors Steel anchors Rainfall Tunnel-slope system 

摘      要：The application of basalt fiber-reinforced polymer(BFRP)anchors has gained significant attention,particularly in the field of geotechnical anchorage engineering because of its high strength and corrosion *** research on the applicability of BFRP anchor in a tunnel–slope system under rainfall is of practical significance to solve the problem of instability damage to anchored slopes caused by corrosion of steel *** this study,model tests of BFRP and steel anchorage structures were conducted to compare their reinforcement capability in a tunnel–slope system under heavy *** results show that the BFRP anchorage structure is better than the steel in coordinating slope deformation and stabilizing earth pressure around the *** deformation of slopes under rainfall is classified into four stages:initial,isokinetic,accelerated,and blocked *** anchors have the same axial strain distribution pattern as the steel anchors,and they are convexly distributed along the axial direction of the *** correlation analysis and Pearson linear correlation analysis of the multi-attribute data of the slope and BFRP anchors showed a positive correlation among BFRP anchor strain,earth pressure inside the slope,slope deformation displacement,and accumulated *** research results provide a basis and reference for the application of BFRP anchors in the anchorage engineering of the tunnel–slope system under rainfall action.