【摘 要】
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The paper presents the results of selected experimental tests under dynamic loads that were conducted on various bridges structures.The first structure is a
【机 构】
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Faculty of Civil Engineering,Opole University of Technology,Opole,Poland
【出 处】
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The 7th International Conference on Bridge Maintenance, Safe
论文部分内容阅读
The paper presents the results of selected experimental tests under dynamic loads that were conducted on various bridges structures.The first structure is a typical steel road-tram bridge which consists with three spans,the second structure is a corrugated steel plate (CSP) railway culvert and third one is a singlearch footbridge.The dynamic loads were caused by the passages of various trains,trucks and pedestrians (and bicycles).The displacements of the bridges were measured using the microwave interferometric radar.The interferometric radar applied in tests,is a precision microwave instrument suitable to the noncontact vibrations and displacements monitoring of various engineering structures.The high accuracy and quickness of measurement are among of the main characteristic features of the radar.In typical measurement conditions,the radar has the following characteristics:range resolution of 0.50 m,the displacement measurement accuracy of 0.01 mm,the sampling rate up to 200 Hz.
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