题 目: Shear force-based method fordetecting vehicle speed and axle spacing
报 告 人: 何维
主 持 人: 王维 讲师
何维，美高梅在线登录网址-手机登录官网-www.4688.com土木工程学院15级在读博士研究生，ASCE Journal of BridgeEngineering审稿人。主要从事车桥耦合振动、桥梁动态称重研究。已获批多项国家专利，在Journal of Bridge Engineering (ASCE),中国公路学报等期刊上发表多篇学术论文。2018.7受美高梅在线登录网址-手机登录官网-www.4688.com“博士研究生高水平国际学术会议资助项目”资助赴澳大利亚墨尔本参加第九届桥梁维护、案例与管理国际会议(IABMAS2018)并做报告。
Bridgeweigh-in-motion (BWIM) system uses the bridge as a scale to estimate vehicleweights. For BWIM systems, reliable axle detection is a prerequisite for theaccurate identification of axle weights and GVW. The existing nothing-on-road(NOR) BWIM systems typically use additional sensors, such as thefree-of-axle-detector (FAD) sensors, for axle detection. However, these NORaxle detection strategies were reported to be only suitable for certain typesof bridges and susceptible to wheel transverse positions. In this study, anequivalent shear force (ESF) method is proposed to identify vehicle speed andaxle spacing by using the ?exural strain signal recorded from the weighingsensors. Compared to the existing NOR BWIM systems, the pro-posed method doesnot require additional sensors for axle detection, which reduces the cost andfacilitate the installation of BWIM systems. The effectiveness and accuracy ofthe proposed method are demonstrated through numerical simulations usingthree-dimensional vehicle-bridge coupled analysis.