Bridges are an important component of the highway transportation system,playing a role of connection and hub.The safety of bridges is related to the safety of the entire highway transportation network.A construction technology for large-span steel structures,truss construction scheme,is proposed to address the construction issues of large bridges,including the process and key points of truss construction.A seismic safety testing method is further proposed to address the various vibrations that bridges may experience during use and the safety issues caused by their self vibration.Among these methods,three models are proposed,namely the virtual work based seismic testing model,the incremental seismic testing model,and the natural vibration based seismic testing model.During the experiment,multiple points of the construction bridge were tested,and the test results showed that among the three seismic testing methods,the seismic testing model based on natural vibration had the best effect,which can provide accurate analysis and prediction for the seismic performance of steel structure bridges.
万方数据
维普
