Seismic Isolated Continuous Railway Composite Bridges in the North of Algeria

Arco, Diego Cobo del; Raventós, Ingrid; Mohr, Steffen

doi:10.1080/10168664.2019.1681346

Cited by 2 publications

(1 citation statement)

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“…Systems of control devices can be categorized into four groups: (1) seismic or base isolation, (2) semi-active, (3) active control, and (4) passive energy dissipation devices (PEDDs) [16][17][18][19][20]. Seismic or base isolation is a technology that is practically implemented in seismically active areas and is effective for both buildings and bridges [21][22][23]. Controllers in active and semi-active devices are utilized to decrease the structural response by processing real-time response data along with force producers that apply counteractive forces.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Seismic Resilience: Evaluating Buildings with Passive Energy Dissipation Strategies

Rasool,

Afzal,

Rashid

2024

Eng

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Structures are recommended to be designed and constructed with the integration of structural health monitoring techniques to ensure that they can dissipate a large amount of energy without considerable damage when subjected to earthquakes. Hysteretic (H), friction (F), viscous (V), and viscoelastic (VE) dampers were employed in this study to observe the response of buildings using the commercially available software ETABS. The effect of different dampers along with configurations on three prototype concrete buildings (3, 5, and 10-storey) was studied by performing a time history analysis. Initially, the response of the buildings was observed in terms of storey drifts, base shear, and displacement without using dampers, while gradually increasing the damping ratio from 0 to 40%. Subsequently, the response of the buildings was evaluated in terms of displacements and base shear using various types of dampers with different configurations. The analysis results demonstrated that the effectiveness of viscous and viscoelastic dampers is higher for 3 and 5-storey buildings, while friction and hysteresis dampers are more suitable for 10-storey buildings. This information enables informed decisions regarding the performance and maintenance of dampers, contributing to the overall resilience and durability of structures in seismic events.

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Section: Introductionmentioning

confidence: 99%

Enhancing Seismic Resilience: Evaluating Buildings with Passive Energy Dissipation Strategies

Rasool,

Afzal,

Rashid

2024

Eng

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Identification of vertical restraint stiffness of foundation for continuous-beam bridges

Tang

Lian

et al. 2023

Proceedings of the Institution of Civil Engineers - Bridge Engi

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With the progress of engineering technology, the natural frequency of structures can be easily obtained by dynamic testing. If the relationship between the fundamental frequency and the constraint stiffness is analyzed, the constraint stiffness of the foundation can be identified. To this end, the vertical vibration of piers is first carried out, and a dynamic identification method for constraint stiffness is proposed. Relying on a project example of a bare pier, the vertical fundamental frequency of the test pier is measured by the pulsation method. Then the finite element software is used to establish a test pier model. The stiffness identification is simulated in the completion stage by adding elastic support and concentrated mass on the top of the model pier. The results show that the difference between the identification results of the bare pier and the calculated value of empirical formula is only 2.97%. The error of the identification results obtained by simulating the completion stage is less than 2.34%, and decreases with the increase of the constraint stiffness of the pier top. This method has a high accuracy and is suitable for identifying the vertical restraint stiffness of the foundation of constant section piers of continuous beam bridges.

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Seismic Isolated Continuous Railway Composite Bridges in the North of Algeria

Cited by 2 publications

References 0 publications

Enhancing Seismic Resilience: Evaluating Buildings with Passive Energy Dissipation Strategies

Enhancing Seismic Resilience: Evaluating Buildings with Passive Energy Dissipation Strategies

Identification of vertical restraint stiffness of foundation for continuous-beam bridges

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