Time Reversal Based Rock Bolt Pre-load Monitoring with Active Sensing Approach Using Piezoceramic Transducers
Rock bolts are the reinforcement tool for the integration of tunnels,mining,geotechnical,coal and foundation engineering.Loading status of rock bolts is incredibly important for the safety of structures.Accidents which caused by load degradation will be avoided via effective monitoring of rock bolt loading level.Therefore,it is vital to monitoring the load status of rock bolts.In this paper,a feasible rock bolt loading status detection method,which based on time reversal approach,was proposed by the authors.A smart washer(new transducer device which made by embedded Lead Zirconate Titanate into a couple washer)which works as a actuator was fabricated on the end of rock shaft of the specimen and a piezocramic transducer which work as an sensor was bonded onto the anchor plate.With the help of time reversal technic,the Signal to Noise Ratio(SNR)can be improved tremendously under complicity interface of rock bolt working environment especially when the rock bolt close to failure.The proposed method provide an innovation mean to measure the loading level of rock bolt.By employed this approach,the load degradation process can be clearly reflect.
Smart washer Active sensing Rock bolt monitoring Loading status monitoring
Dongdong Chen Linsheng Huo Gangbing Song
State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian,Liao Smart Material and Structure Laboratory,Department of Mechanical Engineering,University of Houston,H
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
282-288
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）