현존(現存) 한국(韓國) 고대항교(古代桁橋)의 구조적(構造的) 발달(發達)에 관한 연구(硏究) = A Study on the Structural Development of the Old Korean Girder Bridges

다국어 초록 (Multilingual Abstract)

This study aims to systemize the developement of the domestic girder bridges, and to contribute to the future construction of our own bridges. Bridges are analyzed by grouping them in terms of construction time and structural component. The bridges, which were constructed during the first era of Goryeo-dynasty, have no distinction between main beams and stone deck. Form the latter era of Goryeo-dynasty, the structure of the bridges began to seperate into main beams and stone deck in order to enlarge the width and span length. The bridges, which were constructed during the Chosun-dynasty, were constructed using modulized material, and are considered to be built by structural design concept. Their construction materials became larger due to the development of transportation method. The superstructure of the old Korean bridges became more complicated in contrast to simplification of the substructures.