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http://dx.doi.org/10.7782/JKSR.2016.19.6.755

Development of Displacement Estimation Technique for Bridges Located under Poor Measurement Circumstances  

Jeon, Junchang (Construction Technology Consultants Co., Ltd.)
Lee, Heehyun (Construction Technology Consultants Co., Ltd.)
Publication Information
Journal of the Korean Society for Railway / v.19, no.6, 2016 , pp. 755-764 More about this Journal
Abstract
In this paper, to verify the field application of a displacement estimation technique based on the relationship between displacement and strain, static and dynamic field load test are performed on three-span continuous real bridge structures. The superstructure types of the test bridges are IPC girder highway bridge and steel box girder AGT bridge. LVDTs and strain gauges are attached to them; then, the responses due to test vehicle are measured. To obtain the displacement-strain relationship of the test bridges, the bridges are modeled as grillage system with 6 DOFs for the purpose of structural analyses. Static and dynamic displacements, which are estimated using both the calculated displacement-strain relationship and the measured strain signal, agree well with the values measured by LVDT. This study demonstrates that the displacement estimation technique using the strain signal can be effectively applied to the displacement measurement of bridge structures that cross rivers/roads/railways or have high clearance.
Keywords
Displacement estimation technique; Displacement-strain relationship; Bridge; Load test;
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Times Cited By KSCI : 5  (Citation Analysis)
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