scholarly journals On the basic phenomenon of soil-structure interaction on the free vibration response of beams: Application to railway bridges

2016 ◽  
Vol 125 ◽  
pp. 254-265 ◽  
Author(s):  
A. Doménech ◽  
M.D. Martínez-Rodrigo ◽  
A. Romero ◽  
P. Galvín
Keyword(s):  
Free Vibration ◽  
Soil Structure ◽  
Vibration Response ◽  
Soil Structure Interaction ◽  
Railway Bridges ◽  
Structure Interaction ◽  
Free Vibration Response

Ein Modell mit Boden-Bauwerk-Interaktion zur dynamischen Berechnung von Eisenbahnbrücken/A model with soil-structure interaction for the dynamic analysis of railway bridges

Bauingenieur ◽  
2020 ◽  
Vol 95 (07-08) ◽  
pp. 289-298
Author(s):  
Christoph Adam ◽  
Benjamin Hirzinger
Keyword(s):  
Dynamic Analysis ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Wird Eine ◽  
Railway Bridges ◽  
Structure Interaction

Zusammenfassung In diesem Beitrag wird eine einfache Modellierungsstrategie zur schnellen und effizienten Berechnung der dynamischen Antwort von Brücken zufolge der Überfahrt mit Hochgeschwindigkeitszügen vorgestellt. Dabei wird sowohl die Boden-Bauwerk-Interaktion als auch die Wirkung des Zuges während der Zufahrphase auf das Tragwerk beziehungsweise nach dem Abfahren berücksichtigt. Im mechanischen Modell wird die Brücke als Bernoulli-Euler -Balken, welcher von den statischen Achslasten des Hochgeschwindigkeitszugs überfahren wird, beschrieben. Feder und Dämpfer an den Rändern des Balkens bilden das Verhalten des Untergrunds ab. Die Ergebnisse eines Anwendungsbeispiels zeigen, dass die Boden-Bauwerk-Interaktion die berechnete dynamische Antwort wesentlich beeinflusst.

scholarly journals Seismic Vulnerability Assessment of High-Speed Railway Bridges Using Fragility Curves and Considering Soil-Structure Interaction

2020 ◽  
Vol 16 (1) ◽  
pp. 39-48
Author(s):  
Parham Bakhtiari ◽  
Khosro Bargi
Keyword(s):  
High Speed ◽  
Soil Structure ◽  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Damage Index ◽  
Soil Structure Interaction ◽  
Limit States ◽  
High Speed Railway ◽  
Railway Bridges ◽  
Structure Interaction

AbstractThe assessment of the seismic behavior of the high-speed railway bridges is necessary because of the strategic essence of these structures. Evaluating and predicting damages of the bridges that originated by earthquakes with various intensities can provide useful information, which is very helpful in the management of the possible crises. One of the most useful mechanisms for estimating earthquake damages to these bridges is the development of fragility curves for them. Studies on the production of fragility curves on the high-speed railway bridges are limited. In this research, the fragility curve is plotted for two high-speed railway bridges with different pier heights. Due to the differences in the height of these bridges, a comparison of the performance of these structures is also shown. The model of the high-speed railway bridge was created for each model separately in the SeismoStruct software. The soil-structure interaction is also modeled as springs, and its effects are considered. Nonlinear models are also used to model concrete and steel materials. Then, the incremental dynamic analysis was performed under different ground motion records. By using the obtained data from the analysis, appropriate damage states were selected, and finally, the fragility curves were plotted for different performance limit states. The results showed that with increasing pier height, the damage index was raised and for a constant probability of exceedance, the taller pier is demanded a lower spectral acceleration to achieve a performance level.

Free Vibration Characteristics of Structures With Nonlinear Underlying Soil

1991 ◽  
Vol 113 (1) ◽  
pp. 95-99
Author(s):  
Kamal A. F. Moustafa ◽  
M. El-Gebeily
Keyword(s):  
Perturbation Theory ◽  
Shear Modulus ◽  
Free Vibration ◽  
Nonlinear Model ◽  
Soil Structure ◽  
Natural Frequencies ◽  
Nonlinear Behavior ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Underlying Soil

Free vibration of structures is investigated by using a multidegree of freedom nonlinear model that allows for nonlinear behavior of the soil underlying the structure. The considered nonlinearity is due to the dependence of the soil shear modulus on vibration levels. The soil-structure interaction is modelled as nonlinear complex stiffness. The analysis is carried out by using mathematical perturbation theory. Modifications in the natural frequencies and existence of harmonics are demonstrated. The results are applied to an application example of massive deep water gravity structure.

scholarly journals Soil-structure interaction at railway bridges with integral abutments

2017 ◽  
Vol 199 ◽  
pp. 2318-2323 ◽  
Author(s):  
Hetty Bigelow ◽  
Daniel Pak ◽  
Benno Hoffmeister ◽  
Markus Feldmann ◽  
Günter Seidl ◽  
...  
Keyword(s):  
Soil Structure ◽  
Soil Structure Interaction ◽  
Railway Bridges ◽  
Structure Interaction ◽  
Integral Abutments
Sign in / Sign up

Export Citation Format

Share Document