Essays about: "Ballast stiffness"
Showing result 1 - 5 of 15 essays containing the words Ballast stiffness.
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1. Reliability-Based Sensitivity Analysis of the Dynamic Response of Railway Bridges
University essay from KTH/Bro- och stålbyggnadAbstract : In response to the planned increase in operational speeds and axle loads of passengertrains that may lead to resonance-induced excessive vibrations in railway bridges,recent studies examined the reliability of bridges concerning train running safety andpassenger comfort limit states. In this respect, valuable information regarding theimportance of input variables can be obtained by conducting Sensitivity Analysis (SA). READ MORE
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2. Influence of load distribution on trough bridges
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : There are approximately 4000 railway bridges in Sweden and a common construction type is the short span concrete trough bridge. With the current standards the load distribution through ballast is assumed to be uniformly distributed with a distribution slope of 2:1 according to the Swedish Administration of Transport or 4:1 according to Eurocode 1. READ MORE
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3. Train Induced Vibration Analysis of an End-frame Bridge : Numerical Analysis on Sidensjövägen
University essay from KTH/Bro- och stålbyggnadAbstract : Higher speeds and higher capacity will cause the Swedish rail network to be exposed to disturbing dynamic effects. Higher speeds cause higher vertical acceleration levels of the bridge deck. In this thesis, a numerical analysis of a three span end-frame bridge subjected to train induced vibrations is performed. READ MORE
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4. High-speed railway embankments : a comparison of different regulation
University essay from KTH/Jord- och bergmekanikAbstract : Swedish transport administration initiated this Master Thesis project and the aim was to compare regulations for the design of high-speed railways from three European countries: France, Germany and Spain. The reason why this is of interest for the Swedish transport administration is the design of the first Swedish high-speed railway, called Ostlänken. READ MORE
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5. Investigation of impact sound behaviour in light weight floor constructions - A market survey and finite element analysis
University essay from Lunds universitet/Teknisk akustik; Lunds universitet/Institutionen för byggvetenskaperAbstract : In the last years, the interest in high-rise timber framed building has gone up resulting in an increased demand for good solutions regarding sound insulation. Due to the worldwide growing interest in environmental issues, it has become of greater importance for companies to find ways to take care of their residue, instead of throwing it away. READ MORE