Soil-structure interaction and motion incoherency effects on a concrete bridge with deep foundations

3rd China-Romania Science and Technology Seminar

自然科学;工业技术

Coniu, M.^1 ; Ghiocel, D.M.^2 ; Creu, D.^3

Faculty of Civil Engineering, Transilvania University of Brasov, Romania^1

Ghiocel Predictive Technologies, Inc., Rochester

NY, United States^2

Dan Ghiocel Research Center, Technical University of Civil Engineering Bucharest, Romania^3

关键词: Bridge design;    Deep foundations;    Drilled piles;    Research studies;    Seismic input;    Seismic motions;    Spatial variability;    State of the art;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/399/1/012010/pdf
DOI  :  10.1088/1757-899X/399/1/012010

来源: IOP

【 摘 要 】

The paper presents a seismic SSI study that has been conducted for a 242 m long concrete bridge in Braov, that has deep foundations on drilled piles. The structure is typical for Romania and highly used throughout the country. The seismic soil-structure interaction were performed using the state-of-the-art ACS SASSI software. The soil-structure interaction analyses were performed for both coherent (synchronous) and incoherent (non-synchronous) seismic inputs. The main focus of the study is to evaluate the effects of soil - structure interaction and of the seismic motion incoherency on the bridge dynamic response. The paper includes comparisons of results obtained using the Eurocode 8 analysis procedures and the state-of-the-art seismic soil-structure interaction analysis using ACS SASSI. The final conclusions indicate the limitations of the current bridge design soil-structure interaction modelling and the simplified motion spatial variability modelling in Eurocode 8. Furthermore, the future directions of the research study are presented.