Sökning: "Ülker-kaustell Mahir"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Ülker-kaustell Mahir.
1. Essential modelling details in dynamic FE-analyses of railway bridges
Sammanfattning : The increased need to reduce the use of fossil fuels imposes higher demands on the efficiency of rail transportation. Therefore, an improved knowledge regarding the dynamic properties of railway bridges and infrastructure for railway traffic in general is required. LÄS MER
2. Some aspects of the dynamic soil-structure interaction of a portal frame bridge
Sammanfattning : For certain bridge types, the influence of soil-structure interaction (SSI) may have an important contribution to the stiffness and damping of the structural system. From a design point of view, this influence may be both conservative and non-conservative and therefore, an increased knowledge within this field could lead to better design assumptions. LÄS MER
3. On the dynamics of footbridges : A theoretical approach and a comparison between running and walking loads
Sammanfattning : The dynamic behaviour of lightweight footbridges is often susceptible to HumanInduced Loads (HILs). Generally HILs are taken into account as moving harmonicfunctions in which the loading frequency represents the step frequency of the pedestrians. LÄS MER
4. End-Shield Bridges for High-Speed Railway : Full scale dynamic testing and numerical simulations
Sammanfattning : The increasing need for High-Speed Railway (HSR) to reduce the travelling time requires increasing research within this field. Bridges are main components of any railway network, including HSR networks, and the optimization of their design for this purpose would contribute to a faster and more cost effective development of the HSR network. LÄS MER
5. Dynamic soil-structure interaction of simply supported high-speed railway bridges
Sammanfattning : Research performed on the subject of dynamic soil-structure interaction (SS) concerning railway bridges is presented in this thesis with the focus on simply supported railway bridges supported by shallow foundations in soil strata on bedrock. The research aims to obtain insight into the SSI of high-speed railway bridges and to provide recommendations on how to model the soil-bridge system from a design perspective. LÄS MER