TY - GEN
T1 - Prediction of concrete integral abutment bridge unrecoverable displacements
AU - Kim, Woo Seok
AU - Laman, Jeffrey A.
AU - Linzell, Daniel G.
PY - 2011
Y1 - 2011
N2 - Integral abutment bridges (IABs) have performed successfully for decades and have demonstrated advantages over traditional, jointed bridges with respect to first cost, maintenance costs and service life. However, accurate prediction of IAB response to loading is complex and challenging; behavior is typically nonlinear due to the combined influence of thermal and long-term, time-dependent effects. Summarized herein are measured and computational results from examination of four interstate highway IABs located in central Pennsylvania. The collected data indicates that current AASHTO prediction methods are very conservative with respect to displacements. New computational models are used to perform a parametric study that considers the effects of seasonal thermal loading, thermal gradient, time-dependent material effects, abutment-backfill interaction and pile-soil interaction on deformations that occur over a 75-year bridge life. The measured and parametric study results provide a basis to establish an approximate method for predicting (1) maximum abutment displacement, (2) maximum bridge bending moments and (3) maximum pile moments over the bridge life.
AB - Integral abutment bridges (IABs) have performed successfully for decades and have demonstrated advantages over traditional, jointed bridges with respect to first cost, maintenance costs and service life. However, accurate prediction of IAB response to loading is complex and challenging; behavior is typically nonlinear due to the combined influence of thermal and long-term, time-dependent effects. Summarized herein are measured and computational results from examination of four interstate highway IABs located in central Pennsylvania. The collected data indicates that current AASHTO prediction methods are very conservative with respect to displacements. New computational models are used to perform a parametric study that considers the effects of seasonal thermal loading, thermal gradient, time-dependent material effects, abutment-backfill interaction and pile-soil interaction on deformations that occur over a 75-year bridge life. The measured and parametric study results provide a basis to establish an approximate method for predicting (1) maximum abutment displacement, (2) maximum bridge bending moments and (3) maximum pile moments over the bridge life.
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M3 - Conference contribution
AN - SCOPUS:84861739521
SN - 9781618398017
T3 - American Concrete Institute, ACI Special Publication
SP - 155
EP - 174
BT - Andy Scanlon Symposium on Serviceability and Safety of Concrete Structures
T2 - Andy Scanlon Symposium on Serviceability and Safety of Concrete Structures: From Research to Practice at the ACI Fall 2011 Convention
Y2 - 16 October 2011 through 20 October 2011
ER -