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黄村立交公路桥位于北京南郊大兴县黄村京开(封)公路上,跨越京津铁路。82年初我们对该桥进行了静载、动载鉴定试验。在动载试验中,采用了光线示波器及磁带两套记录手段,本文对磁带记录的两类随机信号提出幅域和频域的初步分析。磁带记录的两类随机信号为:①两辆解放牌载重汽车(各总重7吨)以20公里/小时、30公里/小时、40公里/小时、50公里/小时、60公里/小时的行车速度,同向驶过桥跨时,由
Huangcun Interchange Highway Bridge is located in the southern suburbs of Beijing Daxing County Huangcun Beijing open (closure) highway, across the Beijing-Tianjin Railway. At the beginning of 82, we conducted a static and dynamic test of the bridge. In the dynamic test, two sets of light oscilloscope and tape recording methods are used. In this paper, two kinds of random signals recorded by tape are proposed to analyze the amplitude and frequency domain. Two types of random signals recorded by the tape are: ① two Jiefang brand trucks (each with a total weight of 7 tons) traveling at 20 km / h, 30 km / h, 40 km / h, 50 km / h and 60 km / h Speed, the same direction across the bridge from