Sensitivity of seismic demands and fragility estimates of a typical California highway bridge to uncertainties in its soil-structure interaction modeling

2019 ◽  
Vol 189 ◽  
pp. 605-617 ◽  
Author(s):  
Yazhou Xie ◽  
Reginald DesRoches
Keyword(s):  
Soil Structure ◽  
Soil Structure Interaction ◽  
Highway Bridge ◽  
Seismic Demands ◽  
Structure Interaction ◽  
Interaction Modeling

scholarly journals Soil-fluid-structure interaction applied to the Oued Taht dam (taking into account the membrane effect).

2018 ◽  
Vol 149 ◽  
pp. 02037
Author(s):  
Krenich Nasreddine ◽  
Tahar Berrrabah Amina ◽  
Houmadi Youcef ◽  
Belharizi Mohamed ◽  
Mehdeli Mohamed ◽  
...  
Keyword(s):  
Soil Structure ◽  
Fluid Structure Interaction ◽  
Arch Dam ◽  
Soil Structure Interaction ◽  
Constant Thickness ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Membrane Effect ◽  
Interaction Modeling ◽  
Interaction Phenomenon

The objective of this work is to analyze the dynamic behavior (modal behavior) of the "Oued Taht" arch dam located at MASCARA, taking into consideration the effect of soil-fluid-structure interaction. The finite element code "Ansys" was chosen for the dynamic modeling of the dam that is the subject of this study. Three hypotheses were used for soil-structure interaction modeling; model with embedded base which corresponds to the case where the phenomenon of interactions soil-structure is neglected, model with ground of foundation without mass which consists in taking into account the kinematic component of interaction soil structure and neglecting the inertial component and the model with foundation soil with mass where the two components of soil-structure interaction are taken into account. For the fluid, the model of added masses (equivalent to the westergaard approach) using the SURF element available in the Ansys code library was used. A comparison between the different models of the "Oued Taht" dam was made; it has been found that the taking into account of the soil-fluid-structure interaction phenomenon modifies the period of the system and that the modeling of the dam with and without fluid gives a very important difference of the periods. The results obtained were compared with those of the "Brezina" dam, which is a gravity dam located in BAYADH. The work has shown that the periods of the "Oued Taht" dam with soil-fluid-structure interaction modeling are very out of phase with the periods without fluid modeling (taking into account only the soilstructure interaction phenomenon). which is not the case for the Brezina dam where the periods for the two models are getting closer. The periods between the two models mentioned before are close to the dam of Brézina because the latter is a dam which participates much more by its own weight than by its vault (thickness of the vault varies between 36.3 m at the base and 5m in crest) which is the opposite for the dam "Oued Taht" which participates by its vault (constant thickness of 7 m) thus the membrane effect is present, which is translated by the shift of the periods between the empty case and the filled case.

Urban Train Soil-Structure Interaction Modeling and Analysis

2020 ◽  
pp. 361-381
Author(s):  
Danial Mohammadzadeh ◽  
Nader Karballaeezadeh ◽  
Morteza Mohemmi ◽  
Amir Mosavi ◽  
Annamária R. Várkonyi-Kóczy
Keyword(s):  
Soil Structure ◽  
Soil Structure Interaction ◽  
Modeling And Analysis ◽  
Structure Interaction ◽  
Interaction Modeling

scholarly journals Analysis and Design of Transmission Tower with Isolated Footing

2020 ◽  
pp. 35-42
Keyword(s):  
Soil Structure ◽  
Geographical Location ◽  
Soil Structure Interaction ◽  
Transmission Tower ◽  
Electrical Transmission ◽  
Total Load ◽  
Analysis And Design ◽  
Structure Interaction ◽  
Economical Design ◽  
Interaction Modeling

A transmission tower is a tall structure, usually a steel lattice tower used to support an overhead power line. They are used in high voltage AC and DC systems. Steel tower structure resting on footings are currently becoming popular in any geographical location for electrical transmission, microwave transmission etc. It is necessary to have an understudy of the behavior of such structures and provide an economical design. To understand the performance of such high rise structures, it is necessary to know their behavior considering the soil structure interaction. Modeling of Transmission tower for the validation purpose is done. The basic soil properties of laterite were also found accordingly. Here the entire transmission tower with the isolated footing is modeled and analyzed in STAAD Pro V8i and STAAD Foundation software. The total load transmitted to each tower leg is found using STAAAD Pro and the size of isolated footing under each tower leg is determined using the STAAD Foundation software respectively. If required the soil structure interaction effects (SSI) can also be found easily

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