A Method Estimating Displacement using Measured Strain Response of Simply Supported Girder Bridges

This study presents a simple method which can estimate displacement using measured strain response of simply supported girder b ridges. The basic concept of the present method is derived from a relation between displacement and strain, and is generalized by intro ducing 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 es timated by using measured strain is well agreed with measured one. This study demonstrates that the present method is suitable for estimating di splacement of real simply supported bridge, in which the installation of a displacement transducer at the fixed reference point is difficult.Keywords: Simply supported girder bridge, Displacement, Displacement estimation method, Displacement-strain relationship, Strain 1 정회원 , 씨티씨주식회사 전무이사교신저자