Sökning: "Dynamic amplification factor"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Dynamic amplification factor.

  1. 1. Reliability-Based Sensitivity Analysis of the Dynamic Response of Railway Bridges

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Hasan Al-Zubaidi; [2022]
    Nyckelord :Railway bridges; High-speed trains; Simply supported beam; Global sensitivity analysis; Uncertainty quantification; Reliability; Ballast instability; Running safety; Passenger comfort;

    Sammanfattning : 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). LÄS MER

  2. 2. HSI effects on pedestrian bridges

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Giancarlo Costa; [2021]
    Nyckelord :Dynamics; HSI; Human Structure Interaction; pedestrian bridge;

    Sammanfattning : The study on Human Structure Interaction (HSI) effects represent a new research field in the design of pedestrian bridges. The presence of pedestrians on the structure affects the dynamic properties of the bridge, and these changes may be quantified in order to design pedestrian bridges in a more efficient way. LÄS MER

  3. 3. Parametric Studies of Train-Track-Bridge Interaction : An evaluation of the dynamic amplification due to track irregularities for freight transport

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Rasmus Elm Dahlman; Emil Lundberg; [2021]
    Nyckelord :Dynamics; dynamic amplification factor; railway bridge; train-track-bridge interaction; vehicle model; track irregularities; PSD; Dynamisk förstoringsfaktor; dynamik; järnvägsbroar; tåg-spår-bro interaktion; fordonsmodell; spårojämnheter; PSD;

    Sammanfattning : In this thesis a train-track-bridge interaction (TTBI) model is developed in order to study the dynamic amplification from track irregularities on railway bridges traversed by freight trains. These simulations are of great importance since rail freight transport is expected to increase in order to meet the climate goals. LÄS MER

  4. 4. Refined model for calculating the dynamic amplification factor for road bridges

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Jens Bergenudd; [2020]
    Nyckelord :Dynamics; Dynamic amplification factor; Dynamic impact factor; Platooning; Soil-structure interaction; Vehicle-bridge interaction; Technology and Engineering;

    Sammanfattning : The objective of the thesis is to simulate and evaluate vehicle-bridge interaction (VBI) due to road surface irregularities and soil-structure interaction (SSI) with different vehicle models and suspension properties. Parameter studies will be carried out for integral and slab bridges. LÄS MER

  5. 5. Development of Methodology for Generating Response Spectra for Decoupled Smallbore Piping

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Karl Bondesson; [2014]
    Nyckelord :Technology and Engineering;

    Sammanfattning : In nuclear piping engineering, the response spectrum method of analysis is widely used to analyze piping systems. The matter of combining modal responses is of great interest. Complications may occur with the response spectrum method for large systems. LÄS MER