TY - GEN
T1 - Parametric study on dynamic behavior of rc integral bridge incorporating simplified ssi
AU - Dhar, S.
AU - Dasgupta, K.
N1 - Publisher Copyright:
© 2018 All rights reserved.
PY - 2018
Y1 - 2018
N2 - The present study aims to investigate the influence of the length of an Reinforced Concrete (RC) Integral Bridge (IB) and the stiffness of foundation soil on its seismic behaviour. Two different types of foundation soil are considered, namely (a) medium stiff clay and (b) loose sand. To carry out Time History Analysis (THA), seven site specific ground motions are chosen from the site specific displacement spectrum in the program REXEL-Disp tool. From the THA, it is concluded that with increasing length of the IB, the deck-abutment-backfill integral system is subjected to higher seismic forces, making the abutment-foundation system more vulnerable to failure. Changes of foundation soil from loose sand to medium stiff clay can change the overall force distribution on piers and foundation piles. In loose foundation soil, bridge foundation is more flexible to deform and the structure is less susceptible to form plastic hinges during earthquake shaking. This feature is considered to be favourable for construction of larger jointless bridges.
AB - The present study aims to investigate the influence of the length of an Reinforced Concrete (RC) Integral Bridge (IB) and the stiffness of foundation soil on its seismic behaviour. Two different types of foundation soil are considered, namely (a) medium stiff clay and (b) loose sand. To carry out Time History Analysis (THA), seven site specific ground motions are chosen from the site specific displacement spectrum in the program REXEL-Disp tool. From the THA, it is concluded that with increasing length of the IB, the deck-abutment-backfill integral system is subjected to higher seismic forces, making the abutment-foundation system more vulnerable to failure. Changes of foundation soil from loose sand to medium stiff clay can change the overall force distribution on piers and foundation piles. In loose foundation soil, bridge foundation is more flexible to deform and the structure is less susceptible to form plastic hinges during earthquake shaking. This feature is considered to be favourable for construction of larger jointless bridges.
UR - https://www.scopus.com/pages/publications/85081171174
M3 - Conference contribution
AN - SCOPUS:85081171174
T3 - 11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy
SP - 109
EP - 120
BT - 11th National Conference on Earthquake Engineering 2018, NCEE 2018
PB - Earthquake Engineering Research Institute
T2 - 11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018
Y2 - 25 June 2018 through 29 June 2018
ER -