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http://dx.doi.org/10.4334/JKCI.2006.18.6.711

Moment Control of Pier in Concrete Bridges Constructed by Free Cantilever Method  

Yang, In-Hwan (Technical Research Institute, Daelim Industrial Co., Ltd.)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.6, 2006 , pp. 711-720 More about this Journal
Abstract
The structural behavior of concrete girder in bridges constructed by free cantilever method is time-dependent due to creep and shrinkage of concrete. The constraint effects of longitudinal movement of concrete girders can introduce unfavourable moment into piers. This study is aimed at proposing a method to reduce the moment of piers in bridge constructed by free cantilever method. The method are systematically composed of time-dependent structural analysis of bridges and loading of control force during construction of bridge. Numerical analyses are carried out depending on the parameters such as amount of control force and flexibility of pier. Time-dependent structural behavior shows that moment of pier increases according as pier height decreases. Also, moment of pier decreases when control method are applied. Numerical result of the study represents that time-dependent moment of piers can be controlled effectively by employing the proposed method.
Keywords
concrete bridges; free cantilever method; pier; creep; shrinkage;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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