边坡工程中岩土锚杆设计若干问题探讨

Discussion on Several Issues of Rock-Soil Anchor Design in Slope Engineering

该文根据已有技术资料及国家现行技术标准,介绍了岩土锚杆的组成、特点及作用,分析了在不同技术标准下设计锚杆的差别;探讨了锚杆变形后锚杆受力变形协调规律,分析了锚杆变形过程中荷载分散型锚杆各单元锚索应力状态的差异;指出应控制锚杆挡墙支护工程的破坏模式,加强锚杆挡墙锁脚设计,并说明荷载分散型锚杆现有设计方法存在瑕疵,应引起设计人员高度重视。

According to the existing technical data and the current national technical codes,the composition,characteristics and functions of rock-soil anchor were introduced,and the differences in the anchor design under different technical codes were analyzed;the coordination law of anchor deformation by force was discussed,and the differences in the stress state of each anchor cable of the load-dispersed anchor rod during the deformation process of the anchor rod were analyzed.It is pointed out that the failure mode of the anchor retaining wall support engineering should be controlled,and the lock feet design of anchor rod retaining wall should be strengthened.The existing design methods for the load-dispersed anchor have defects,which should be noted by designers.