锚固体系中全长粘结型锚杆应力分布研究

Research on Stress Distribution of Wholly Bonded Anchor Rod in Anchor System

基于锚固体系的整体性思想,以12,20根锚杆的锚固体系为例,利用三维数值模拟与室内模型试验,分析了全长粘结型锚杆和滑坡体之间的相互作用,研究了锚杆所承受应力与锚杆在锚固体系中所处位置、滑坡体加载变化、锚杆间距等影响因素之间的关系,总结了在这些复杂因素下全长粘结型锚杆应力变化规律。研究结果表明:滑坡体滑动力主要由锚杆承担,各锚杆的应力与其在锚固体系中的位置和总体加载情况有关。

Based on the integrity concept of anchor system,taking the anchor system comprised of 12 and 20 anchor rods for example,the three-dimensional modeling and laboratory model test are performed to analyze the interaction between the wholly bonded anchor rod and landslide mass,research the relation between the stress applied to the anchor rod and influence factors like the position of anchor rod in the anchor system,loading change of landslide mass,anchor rod spacing,etc.,and summarize the stress changing rule of the wholly bonded anchor bolt under these complicated factors. The research result shows that the sliding force of landslide mass is mainly undertaken by the anchor rod and the stress of anchor rod is related to its position in the anchor system and total load.