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Title |
A Method Estimating Displacement using Measured Strain Response of Simply Supported Girder Bridges
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DOI |
http://dx.doi.org/10.11112/jksmi.2016.20.3.018 |
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Keywords |
단순지지 거더교 ; 변위 ; 변위 추정 방법 ; 변위-변형률 관계 ; 변형률 Simply supported girder bridge ; Displacement ; Displacement estimation method ; Displacement-strain relationship ; Strain |
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Abstract |
This study presents a simple method which can estimate displacement using measured strain response of simply supported girder bridges. The basic concept of the present method is derived from a relation between displacement and strain, and is generalized by introducing analytical tool. Static and dynamic laboratory test are conducted on simply supported plate which is designed to respond dynamically similar to actual bridges to experimentally verify the present method, and displacement and strain are measured at the midpoint of specimen. Displacement estimated by using measured strain is well agreed with measured one. This study demonstrates that the present method is suitable for estimating displacement of real simply supported bridge, in which the installation of a displacement transducer at the fixed reference point is difficult.
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