Theoretical and experimental research on characteristics of lateral vibration for a pre-stress bolt supporting system  

作　　者：LI Qing-feng ZHU Chuan-qu DUAN YU 

机构地区：[1]Hunan Key Laboratory of Safe Mining Techniques of Coal Mines, Xiangtan 411201, China [2]School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China [3]Hunan Vocational Institute of Technology, Xiangtan 411104, China

出　　处：《Journal of Coal Science & Engineering(China)》2009年第1期33-37,共5页煤炭学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(50674046);National Natural Science Important Foundation of China(50634050);National Basic Research Program of China(2007CB209400)

摘　　要：According to the structure and stress trait of bearing bolts,a lateral-vibrationmechanics model was established for them,and the relation between lateral-vibration frequencyand axial load was analyzed;then,lateral-vibration trait of bearing bolts was studiedthrough laboratory simulation test.The results indicate that vibration frequency of boltsupport system increases as well as axial force,the detection on axial load of bolts can bemade by generating lateral vibration of bearing bolts.Theoretical and experimental researchresults show that frequency method is effective for detecting the axial force of boltsupport system.According to the structure and stress trait of bearing bolts, a lateral-vibration mechanics model was established for them, and the relation between lateral-vibration frequency and axial load was analyzed; then, lateral-vibration trait of bearing bolts was studied through laboratory simulation test. The results indicate that vibration frequency of bolt support system increases as well as axial force, the detection on axial load of bolts can be made by generating lateral vibration of bearing bolts. Theoretical and experimental research results show that frequency method is effective for detecting the axial force of bolt support system.

关 键 词：prestressed bolts lateral vibration axial force nondestructive detection 

分 类 号：TD353.6[矿业工程—矿井建设] TU757.4[建筑科学—建筑技术科学]