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Seismic Behavior of Integral Abutment Bridges

Siadat, Alireza | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51347 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Maleki, Shervin
  7. Abstract:
  8. Purpose of this research is evaluation of response modification factor for integral abutment bridges in longitudinal direction in which substructure and superstructure both act as a unit system in resisting of lateral loads and no expansion joints are used in them. One of the most important challenges in design of IABs, is lack of response modification factor for their seismic design in longitudinal direction. Another challenge in these bridges, is modeling of soil-bridge structure interaction that affects not only abutment and piles’ seismic performance, but deck performance too. The other challenge is lack of adequate knowledge about their behavior and seismic performance which is of great importance because of the increasing number of IAB construction and large magnitude ground motions happening throughout the world. To do this, there are many methods existing and one of the most popular ones is FEMA P695’s method which is based on ATC-63 researches. In this research, FEMA methodology is used in order to evaluate IAB’s seismic performance and quantifying it. Innovation of this research is proposition of a suitable response modification factor for seismic design of IABs in longitudinal direction and seismic assessment of IABs using fragility curves for the first time. Another innovation is proposing of a new soil-structure interaction modeling method. Results of this research are useful for seismic design of integral abutment bridges and utilization of obtained fragility curves for future researches, rehabilitation and seismic improvement purposes
  9. Keywords:
  10. Integral Abutment Bridges ; Soil-Pile-Structure Interaction ; Federal Emergency Management Agency (FEMA)P695 Code ; Structure Behavior Coefficient ; Seismic Response ; Nonlinear Incremental Dynamical Analysis

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