Essays about: "railway bridge"

Showing result 16 - 20 of 77 essays containing the words railway bridge.

  1. 16. Monitoring and Modelling of the Abiskojåkka Bridge

    University essay from Luleå tekniska universitet/Byggkonstruktion och brand

    Author : Kasper Furenstam; [2020]
    Keywords : Prestressed bridge; Abisko; Monitoring; thermal effects; FEM;

    Abstract : The infrastructure of today is getting older and problems caused by deterioration over time is affecting the service life of these structures. In Sweden most of the existing bridges were constructed 60 to 70 years ago, rising the need to determine the state of health of the bridges as the maintenance costs will increase heavily. READ MORE

  3. 17. A 3D Sliding Bearing Finite Element Based on The Bouc-Wen Hysteretic Model : Mathematical modelling and numerical implementation

    University essay from KTH/Bro- och stålbyggnad

    Author : Sicong Wei; [2020]
    Keywords : high-speed railway; nonlinear dynamics; bridge bearings; friction; hysteresis; secondary development; damping;

    Abstract : Bridge bearing is an essential component with the function of connecting the superstructure and substructure of the bridge, transmitting load and providing movability to the superstructure. Under dynamic conditions, the internal friction of bridge bearing dissipates the vibration energy and therefore reduces the dynamic response of the bridge. READ MORE

  4. 18. Non-Destructive Testing Of Concrete Bridges

    University essay from Luleå tekniska universitet/Byggkonstruktion och brand

    Author : Nadja Hedlund; [2020]
    Keywords : Non-Destructive testing; Concrete; Covermeter; Ultra-Sonic Pulse Velocity; Rebound hammer;

    Abstract : Non-destructive testing is of great value in cases where a structure's future is investigated to find out what the best measure is. It is not always the best solution to demolish and build new. Many structures can be repaired and function several more years. READ MORE

  5. 19. Soil-Structure Interaction Analysis of Portal Frame Railway Bridges : Numerical Analysis of Two Case Study Bridges

    University essay from KTH/Bro- och stålbyggnad

    Author : Nils Sandqvist; Marko Milicevic; [2020]
    Keywords : Soil-structure Interaction; Portal Frame Bridge; Dynamic Analysis; Perfectly Matched Layer; Train Passage Analysis; Railway Bridge; High Speed Train v;

    Abstract : This thesis concerns dynamic Soil-Structure Interaction (SSI) analysis of portal framerailway bridges. Dynamic problems are common for bridges used for high speedrailway traffic. The passing trains induce harmonic loads on the bridges causingvibration amplitudes that may cause damage to the bridge structures and userdiscomfort. READ MORE

  6. 20. Machine Learning – Based Dynamic Response Prediction of High – Speed Railway Bridges

    University essay from KTH/Bro- och stålbyggnad

    Author : Jin Xu; [2020]
    Keywords : High-Speed Railway Bridges; Bridge Dynamics; Artificial Neural Networks ANNs ; Back-Propagation Neural Networks BPNNs .;

    Abstract : Targeting heavier freights and transporting passengers with higher speeds became the strategic railway development during the past decades significantly increasing interests on railway networks. Among different components of a railway network, bridges constitute a major portion imposing considerable construction and maintenance costs. READ MORE