Assessment of Prestress Force in Bridges Using Structural Dynamic Responses under Moving Vehicles
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-16
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
This study carries out numerical simulations to identify the magnitude of prestress force in a highway bridge by making use of the dynamic responses from moving vehicular loads.
The prestressed bridges are modeled using four-node isoparametric flat shell element taking into account the transverse shearing deformation in the finite element model.
The vehicle is modeled as a multiple degrees-of-freedom system.
An approach based on dynamic response sensitivity-based finite element model updating is proposed to identify the elemental prestress force.
The identified results are obtained iteratively with the penalty function method with regularization from the measured structural dynamic responses.
A single-span prestressed Tee beam and two-span prestressed box-girder bridge are studied as two numerical examples.
The effects of road surface roughness, measurement noise, and speed of moving vehicle on the identification results are investigated.
Studies indicate that the proposed method is efficient and robust for prestress force identification.
Good identified results can be obtained from several measured acceleration responses.
American Psychological Association (APA)
Li, Hao& Lv, Zhongrong& Liu, Jike. 2013. Assessment of Prestress Force in Bridges Using Structural Dynamic Responses under Moving Vehicles. Mathematical Problems in Engineering،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1009391
Modern Language Association (MLA)
Li, Hao…[et al.]. Assessment of Prestress Force in Bridges Using Structural Dynamic Responses under Moving Vehicles. Mathematical Problems in Engineering No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-1009391
American Medical Association (AMA)
Li, Hao& Lv, Zhongrong& Liu, Jike. Assessment of Prestress Force in Bridges Using Structural Dynamic Responses under Moving Vehicles. Mathematical Problems in Engineering. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1009391
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1009391