IIIT Hyderabad Publications |
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SOIL STRUCTURE INTERACTION ANALYSIS FOR INTEGRAL ABUTMENT BRIDGE SYSTEMAuthors: Pruthvi Chowdary,Pallavi Ravishankar,Neelima Satyam Conference: Proceedings of Indian Geotechnical Conference IGC-2014 Date: 2014-12-18 Report no: IIIT/TR/2014/87 AbstractIntegral Abutment Bridges (IABs) are jointless bridges whereby the deck is continuous and monolithic with abutment walls. Their principal advantages are derived from the absence of expansion/contraction joints, making them the most cost-effective system in terms of construction, maintenance and longevity. It is one of the challenging tasks to achieve the soil structure interaction between the piles and the surrounding soil of the integrated bridge system. In this research paper numerical model is developed using appropriate finite element software for both the basic system with SSI and without SSI and dynamic analysis is carried out to understand the importance of the soil pile interaction in the considered bridge system. The parametric study including different soil types, different type of connections between pile and abutment, effect of water table, different earthquake loading and the results are compared for both the conditions including SSI and without SSI. The main objective of this study to observe the trends in bending moment, deflection in longitudinal girders and in piles subjected to the given dynamic loading. The study concluded that the temperature effects are more significant in case of integral abutment bridges; however the changes in soil properties behind the abutment and around the piles affect significantly the performance of super structure. Full paper: pdf Centre for Earthquake Engineering |
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