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단부격벽 일체형 PSC거더를 갖는 반일체식 교량의 시공성 연구
박종면 ( Jong Myen Park ),김진배 ( Jin Bae Kim ),전성용 ( Sung Yong Jun ),김층식 ( Chuang Sik Kim ),유성근 ( Sung Kun You ),박중배 ( Joong Bai Park ),임정훈 ( Jung Hoon Lim ) 한국복합신소재구조학회 2014 복합신소재학회논문집 Vol.5 No.2
This paper introduces general concepts of jointless bridges and field construction case of semi-integral bridge with psc girder integrating end-diaphragm. The expansion joints need to satisfy thermal and safety conditions of bridges. General bridges with joints have some problems, which are frequently replacement cycle time from mechanical damage or unstable movement, maintenance cost and more. To solve these problems, Integral Abutment Bridges(IAB) have been applied overseas in the 1930s. In Korea, first IAB was constructed in the early 2000s and precast IAB systems was invented and applied lately. Kyungshin overpass bridge in Incheon is the Semi-IAB constructed, the span length is 2@35=70m and the width is 13.9m. The original plan was to use general joint bridge but design field changed with expectations for advanced economic estimation and maintenance. This changed method of B.I.B bridge construction provided not only workability, construction cost but also safety improvement at the same time.