Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74787
Title: Time-variant reliability analysis of widened deteriorating prestressed concrete bridges considering shrinkage and creep
Authors: Tu, B
Fang, Z
Dong, Y 
Frangopol, DM
Keywords: Corrosion
Live-load distribution factor
Shrinkage and creep
System reliability
Widened concrete bridge
Issue Date: 2017
Publisher: Elsevier Ltd
Source: Engineering structures, 2017, v. 153, p. 1-16 How to cite?
Journal: Engineering structures 
Abstract: Nowadays, bridge widening has become an economic option to tackle the increasing demand of the traffic volume and to enhance the capacity of existing highway bridges. Thus, relevant studies on the performance assessment of widened bridges are needed. This paper presents a computational probabilistic framework for time-variant reliability analysis of widened concrete highway bridges in a systematic manner considering the effects of live-load redistribution, structural deterioration, and concrete shrinkage and creep. Specifically, differences and inconsistences between the new and existing structures regarding live-load distribution, reinforcement corrosion, and concrete shrinkage and creep are considered. A finite element grillage model is constructed to investigate live-load distribution factors and internal axial forces caused by concrete shrinkage and creep. The uncertainties associated with shrinkage and creep effects are accounted for within the probabilistic framework. The flexural moment resistance of the bridge girder is computed considering the combined effects of the shrinkage-and-creep-induced axial force and structural deterioration. Ultimately, the system reliability of the widened bridge is calculated. The proposed probabilistic framework is applied to a widened prestressed concrete T-girder bridge.
URI: http://hdl.handle.net/10397/74787
ISSN: 0141-0296
EISSN: 1873-7323
DOI: 10.1016/j.engstruct.2017.09.060
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

2
Last Week
0
Last month
Citations as of Dec 6, 2018

WEB OF SCIENCETM
Citations

2
Last Week
0
Last month
Citations as of Dec 17, 2018

Page view(s)

15
Citations as of Dec 17, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.