Optimal Vertical Stiffness of Fastener of Concrete Track in High-Speed Railway
نویسندگان
چکیده
منابع مشابه
Multicriteria Optimisation of Railway Track for High-speed Lines
The paper presents results of multicriteria optimum design of an embedded rail structure (ERS). The optimality criteria are based on the requirements to railway tracks related to cost efficiency of the design, minimum noise emission and minimum wear of wheels and rails. The design variables comprise the material and geometry properties of ERS, namely elastic properties and volume of compound, s...
متن کاملrailway track stiffness variations – consequences and countermeasures
the track stiffness experienced by a train will vary along the track. sometimes the stiffness variation may be very large within a short distance. one example is when an unsupported sleeper is hanging in the rail. track stiffness is then, locally at that sleeper, very low. at insulated joints the bending stiffness of the rail has a discontinuity implying a discontinuity also of the track stiffn...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
High Speed Railway Productivity :
Signature of A uthor........ ......................r.. . ........ .................................................... Department of Civil & Environmental Engineering May 11 th, 2012 C ertificated by............. . ........................... Joseph M. Sussman JR East Professor of Civil & Environmental Engineering and Engineering Systems 11 11 A ccepted by .........................................
متن کاملinvestigation on the accuracy of the current practices in analysis of railway track concrete sleepers
in this paper, the main factors in the analysis of the railway concrete sleepers areinvestigated and new recommendations are made in order to improve the accuracy of the currentpractices in analysis of the railway track system. first, a comprehensive literature survey isconducted, then, fem models for a railway track system are developed and used to discuss andevaluate the assumptions commonly ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Korean society for railway
سال: 2015
ISSN: 1738-6225
DOI: 10.7782/jksr.2015.18.1.43