考虑倾角影响压力型锚索锚固段应力的近似理论分析  

Approximate Theoretical Analysis of Stress in Anchorage Section of Pressure Cable Affected by Anchorage Angle

作　　者：叶红[1,2] 陶廷权[3] 李艳[1,2] 陈燕平[2] YE Hong;TAO Ting-quan;LI Yan;CHEN Yan-ping(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;School of Transportation Engineering,Wuhan Technical College of Communications,Wuhan 430065,China;CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉交通职业学院交通工程学院,武汉430065 [3]中交第四航务工程勘察设计院有限公司,广州510230

出　　处：《长江科学院院报》2025年第1期136-143,共8页Journal of Changjiang River Scientific Research Institute

基　　金：湖北省建设科技计划项目(JK2024073)。

摘　　要：为了更加精确地研究压力型锚索的锚固机理,考虑平面应力状态的应力分析,基于明德林(Mindlin)理论解推导了压力型锚索锚固段注浆体所受压应力的近似理论解和锚固体与岩土层间剪应力的近似理论解,并进行了算例分析。研究结果表明:锚索倾角与压力型锚索锚固段注浆体应力分布曲线之间存在负相关关系,锚索倾角与锚固段注浆体应力峰值之间存在幂函数关系,且锚索倾角对锚固段注浆体所受压应力和锚固体与岩土层间剪应力的影响较大。所得研究结果进一步丰富了压力型锚索锚固技术的理论研究内容,可为新型锚固技术的开发应用提供一定的参考,也为压力型锚索加固岩土体设计提供理论支撑。To more accurately investigate the anchorage mechanism of pressure cables,in consideration of plane stress conditions,we derived the approximate theoretical solutions for both the compressive stress of the grouting body of pressure anchor cable and the shear stress between anchor solid and rock-soil layer based on Mindlin’s fundamental solution.Through example analysis,we revealed an inverse relationship between the anchorage angle and the stress distribution curve of the grouting body,as well as a power function relationship between the anchorage angle and the peak stress of the grouting body in the anchoring section.The anchorage angle significantly influences both the compressive stress of the grouting body at the anchoring section and the shear stress at the interface between anchor solid and rock-soil layer.These findings not only enrich the understanding of the pressure cable anchorage mechanism but also provide valuable references for the development and application of new anchoring technologies.Additionally,they offer theoretical support for the design of pressure anchor cables in rock and soil engineering.

关 键 词：压力型锚索 Mindlin理论 应力状态 锚固机理 锚索倾角 

分 类 号：TU457[建筑科学—岩土工程]