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Title: Seismic performance of a bridge with tall piers
Authors: Kulkarni R.
Adhikary S.
Singh, Yogendra C.
Sengupta A.
Published in: Proceedings of Institution of Civil Engineers: Bridge Engineering
Abstract: This paper presents the study of seismic performance evaluation of a proposed railway bridge with tall piers. The study is mainly focused on the central span of bridges having 100-m high piers. The primary aim of the study is to examine the applicability of the response reduction factors, R, given in seismic design codes, for bridges with tall piers. The bridge is designed with increasing values of response reduction factors and its performance is evaluated considering different detailing practices. Moment curvature behaviour and shear resistance of hollow reinforced concrete piers is also discussed. The effect of foundation flexibility on seismic performance of the bridge is explored by performing a sensitivity study with varying modulus of subgrade reaction of the founding soil. It is observed that the response reduction factors prescribed in the Indian code also yield satisfactory performance for tall bridges. In contrast to buildings, currently, displacement is not considered as a design criterion for bridges; however, in most of the cases considered in the present study, the bridges behaved elastically or nearly elastically, with excessive displacement at the top. Foundation-soil flexibility has a significant effect on the displacement of tall bridges, and results in a change of seismic performance level of the considered bridge, in some cases.
Citation: Proceedings of Institution of Civil Engineers: Bridge Engineering, (2016), 67- 75
Issue Date: 2016
Publisher: Thomas Telford Services Ltd
Keywords: Bridges
Design methods & aids
Reinforced concrete
Seismic design
Seismic waves
Design method
Reinforced concrete pier
Response reductions
Seismic design code
Seismic Performance
Seismic performance evaluation
Sensitivity studies
Subgrade reactions
ISSN: 14784637
Author Scopus IDs: 57129953500
Author Affiliations: Kulkarni, R., Department Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Adhikary, S., Department Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Singh, Y., Department Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Sengupta, A., STUP Consultants Pvt Ltd, Kolkata, India
Appears in Collections:Conference Publications [EQ]

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