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A platform for research: civil engineering, architecture and urbanism
Large-Scale Direct Shear Test on Railroad Ballast
The railway industry has experienced enormous developments in recent history due to the emergence of high-speed trains, increasing number of passengers, and travel comfort. These developments require more efficient railroad design and reduction in maintenance costs. For optimizing the track lifetime and prediction of maintenance time, comprehensive understanding of the mechanical behavior of ballast material is required. The large particle size of the ballast material needs a unique testing facility to represent the proper behavior of the material in the laboratory. To better understand the shear behavior of the ballast material, a series of large-scale monotonic direct shear tests (DST) has been performed on crushed granite material at Texas A&M University laboratory. The test results revealed a nonlinear failure envelope for the material. It is shown that the friction and dilation angle varies nonlinearly with the normal stress.
Large-Scale Direct Shear Test on Railroad Ballast
The railway industry has experienced enormous developments in recent history due to the emergence of high-speed trains, increasing number of passengers, and travel comfort. These developments require more efficient railroad design and reduction in maintenance costs. For optimizing the track lifetime and prediction of maintenance time, comprehensive understanding of the mechanical behavior of ballast material is required. The large particle size of the ballast material needs a unique testing facility to represent the proper behavior of the material in the laboratory. To better understand the shear behavior of the ballast material, a series of large-scale monotonic direct shear tests (DST) has been performed on crushed granite material at Texas A&M University laboratory. The test results revealed a nonlinear failure envelope for the material. It is shown that the friction and dilation angle varies nonlinearly with the normal stress.
Large-Scale Direct Shear Test on Railroad Ballast
Kharanaghi, Mohammad Mahdavi (author) / Briaud, Jean-Louis (author)
Geo-Congress 2020 ; 2020 ; Minneapolis, Minnesota
Geo-Congress 2020 ; 123-131
2020-02-21
Conference paper
Electronic Resource
English
Large-Scale Direct Shear Test on Railroad Ballast
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