Title:
Alternative Methods for Failure Prediction in Twin-Cell Box- Girder Bridges
Author(s):
J. Chithra, Praveen Nagarajan, and A. S. Sajith
Publication:
Structural Journal
Volume:
121
Issue:
1
Appears on pages(s):
37-46
Keywords:
collapse mechanism; failure modes; space truss analogy; twincell box-girder bridges
DOI:
10.14359/51739183
Date:
1/1/2024
Abstract:
Intense research works on twin-cell box-girder bridges are limited
when compared to single-cell box-girder bridges and hence, not
many sources are available to study the simultaneous effect of
bending and torsion in them. The estimation of ultimate load in
a twin-cell box-girder bridge under different modes of failure
using the two existing simplified methods—namely, the space truss
analogy and collapse mechanism—demands more research attention.
The primary objective of this paper is to develop simplified
equations for twin-cell box-girder bridges using the principles of
collapse mechanism. The second main objective is to check the
suitability of using space truss analogy and collapse mechanism
in different modes of failure. Experimental work for studying the
effects of various structural actions due to an eccentric loading on a
simply supported twin-cell concrete box-girder bridge is conducted
and numerical analyses are presented to understand the effect of
load positions and reinforcement ratios in the failure modes.