The Planning and Design of Jeong-Ji High Speed Railway Bridge

국내최장 고속철도 정지고가(L=9.3km) 교량형식 개발 및 설계 - 35m PSM PSC Box교, 80m 3경간 Arch교, 국내최초 ED교 -

Jeong-Ji overbridge is designed to be 9.3km long, the longest for a high speed railway bridge ever constructed in Korea. This bridge is constituted of three types of structure. Standard type bridge is 35m PSC Box bridge which will be constructed by Precast Span Method. To cross the Cheonan Nonsan Expressway, 80m three-span steel arch bridge is designed to avoid rail expansion joint. Finally, Extradosed bridge is planned for high speed railway bridge for the first time in Korea based on originative and advanced design techniques. It is expected that this will contribute to the development of national technology for long-span high speed railway bridges.