United States Department of Transportation
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Highway-railway at-grade crossing structures : trackbed and surface pressure measurements and assessments.
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2009-05-01
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[PDF-3.75 MB]
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Abstract:Techniques are described for installing instrumentation within highway/railway crossings - to measure vertical pressures under moving highway and railway loadings - using earth pressure cells. Also, techniques are described for installing instrumentation between rail base/tie plate interfaces - to measure vertical pressures under moving loadings - using pressure sensitive ink sensors. In addition, the sensors were used to measure the surface pressures imparted by highway vehicles on crossing surfaces. Data is presented for several crossings including a wide variety of conditions and loading intensities. The data serves to quantify pressure gradients within highway/railway crossings for application structural design analyses.
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