Highway-railway at-grade crossing structures : trackbed and surface pressure measurements and assessments.

PDFTech ReportKTC-09-05/FR 136-04-2FFRT 136Railroad grade crossingsAt grade intersectionsHighwaysRailroad tracksBeddingLoad cellsGrade crossing surfacesPressureSensorsKentuckyUniversity of Kentucky Transportation CenterRose, Jerry G.Durrett, Daniel M.Walker, Lindsay A.Stith, JasonUniversity of Kentucky Transportation CenterKentucky. Transportation CabinetUnited States. Federal Highway AdministrationUS Transportation CollectionTechniques 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