采矿与安全工程学报2017，Vol.34Issue(4)：684-688,5.DOI:10.13545/j.cnki.jmse.2017.04.012
预紧力对锚杆锚固系统横向振动频率的影响分析
The effect of preload force on the transverse vibration frequency of anchorage system
摘要
Abstract
According to the structure and mechanical characteristics of rock-bolts, the simplified me-chanical model of anchor transverse vibration was established,and the interrelationship among such parameters as the natural frequency, length, and preload forces of anchors was analysed and obtained. In view of the actual working environment of anchors, a numerical calculation model was established for dynamic analysis of the bolt support system, and the distribution characteristics of the natural frequency of anchor support system under different preload forces was analyzed with the software of ANSYS. The results have shown that transverse vibration is the main form of movement for anchor with preload force, the natural frequency in each order of the system increases with the preload force F; the effect of change in preload force on low-order frequencies is greater than that on high-order frequencies of the anchor system; moreover, the fitting function between the preload force and fundamental frequency was given, which is in basic agreement with the results of theoretical analysis. This paper provides theoretical sup-port for the detection of the preload force.关键词
频率/预紧力/锚杆检测/数值模拟Key words
frequency/preload force/anchor detection/numerical simulation分类
矿业与冶金引用本文复制引用
卢爱红,徐金海,胡善超..预紧力对锚杆锚固系统横向振动频率的影响分析[J].采矿与安全工程学报,2017,34(4):684-688,5.基金项目
国家重点基础研究发展计划(973)项目(2013CB227900) （973）
国家自然科学基金青年基金项目(51304201) （51304201）
