离岸码头结构无基准动态位移测试技术  

Dynamic displacement testing technology without benchmark for offshore wharf structure

作　　者：王承强[1,2] 陈忠华 贾宇[1,2,3] 匙庆磊 WANG Cheng-qiang;CHEN Zhong-hua;JIA Yu;CHI Qing-lei(Nanjing Hydraulic Research Institute,Nanjing 210029,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing 210029,China;Hohai University,College of Water Conservancy and Hydropower Engineering,Nanjing 210098,China;Institute of Engineering Mechanics,China Earthquake Administration,Sanhe 065201,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]水文水资源和水利工程科学国家重点实验室,江苏南京210029 [3]河海大学水利水电学院,江苏南京210098 [4]中国地震局工程力学研究所,河北三河065201

出　　处：《水运工程》2021年第1期48-55,共8页Port & Waterway Engineering

基　　金：国家重点研发计划课题项目(2018YFF0215005)。

摘　　要：在结构位移测试方法研究现状的基础上,提出无基准测试码头动态位移的思路并建立相应测试及分析系统。选定无源伺服位移传感器采集动态信号,通过仿真试验系统研究传感器对不同形式荷载作用的振动响应规律,针对准静态位移工况,提出基于传感器采集信号与测试系统仿真模型反演结构位移真实值的修正方法,形成可变荷载作用下码头结构的动态位移无基准测试技术。开展现场动态位移测试试验,结合基于舒适度的码头位移限值研究及有限元建模分析计算,验证技术的可靠性。结果表明,该技术操作简单、结果可靠、受环境影响小,可实现远程自动监测。Based on the research status of the testing method of structural displacement,we propose the idea of measuring dynamic displacement of wharf without benchmark,and establish the corresponding test and analysis system.We select the passive servo sensor to collect the dynamic signal,and study vibrational response law of the sensor to different loading forms by the simulation test system,propose a correction method to obtain actual value of structure displacement based on inverse analysis by the simulation model of the test system and signals of sensors aiming at the working condition of quasi-static displacement,develop the dynamic displacement testing technology without benchmark for dock structure under variable load,and carry out field dynamic displacement test to verify the reliability of the proposed technology combining with the research on wharf displacement limit based on comfort level and the analysis and calculation of finite element modeling.The results show that the technology is simple to operate,reliable in results,less affected by the environment,and can realize remote automatic monitoring.

关 键 词：码头结构 动态位移 无基准 测试技术 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]