Research Article
Jan 1978
Response of Railroad Ballast to Vertical Vibration
Publication: Transportation Engineering Journal of ASCE
Volume 104, Issue 1
Abstract
The effect of vertical vibration on some railroad ballasts in laboratory tests is presented. The ballasts were found to behave in a similar manner to that previously reported for sands, i.e., peak acceleration was the main parameter affecting densification. For unsurcharged ballast, little increase in density occurred at peak accelerations below 1 g, a large increase in density occurred at peak accelerations between 1 g and 2 g, but little further increase in density occurred at higher peak accelerations. Surcharge pressures above 50 psi (345 kN/m²) led to an increase in the peak acceleration needed to produce a substantial increase in density. Gradings modeled on the Talbot grading equation with n values between 0.7 and 1.0 gave the highest densities under vibration. There was some downward migration of fine particles during vibration. The amount of segregation appeared to be independent of grading but dependent on the particular ballast tested.
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Information
Published In
Transportation Engineering Journal of ASCE
Volume 104 • Issue 1 • January 1978
Pages: 75 - 87
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Jan 1978
Published online: Feb 5, 2021
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Authors
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Paul N. Gaskin
Assoc. Prof., Dept. Civ. Engrg., Queen's Univ., Kingston, Canada
Allan G. Powell
Engr., Dames and Moore Consulting Engrs., Fairbanks, Alaska
Gerald Raymond, M.ASCE
Prof., Dept. of Civ. Engrg., Queen's Univ., Kingston, Canada
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.