Dynamic Behavior of Composite Steel Girder Bridge Exceeding Train Speed 350km/h

The new developed train(HEMU-430X) faces running at high speed over 400km/h. But The Korea railway design code gives guidelines below 350km/h speed. Honam HighSpeed Railway was also designed based on the design standard below 350km/h. Existing infra structures have to be reviewed at high speed running and the design guideline for the speed over 350km/h should be prepared as soon as possible. This paper presents (1) the simulation results of composite steel girder bridge(Kaya Bridge of Seoul-Pusan HighSpeed Railway), (2) values measured at this bridge and the comparison with simulation results, and (3) the prediction of Yonjung bridge being constructed in Honam HighSpeed Railway.\n?????? ????????? ?????????????????????(HEMU-430X)??? 400km/h ????????? ??????????????? ????????? ?????????, ???????????? ????????????????????? 350km/h????????? ??????????????? ?????? ????????? ???????????? ?????????, ?????????????????? 350km/h????????? ????????? ???????????? ???????????????. 350km/h??? ???????????? ??????????????? ?????? ?????? ???????????? ????????? ????????????, ??????????????? ????????? ???????????? ????????? ????????? ???, ??? ??????????????? ????????? ?????? ????????? ??????????????? ?????? ?????????????????????, ?????????????????????(HEMU-430X) ???????????? ??? ????????? ??????????????? ?????????, ?????? ???????????? ??????, ???????????? 350km/h????????? ??????????????? ?????? ????????? ?????????????????? ??????????????? ???????????????. ??????????????? ???????????? ??????????????? ????????? ????????? ????????? ????????? ?????? ??????????????? ???????????? ?????? ??????????????? ?????? ?????? HEMU ??????????????? ????????? ??? ?????? ?????? ????????? ???????????????.