To evaluate the traffic safety of PSC box bridge for increasing speed 450km/h of KTX, a dynamic analysis of KTX wheel force spectrum is needed concurrently with existing design requirements. The wheel force spectrum are considered the dynamic PSC box bridge behaviors as well as KTX running movements with advanced numerical model. KTX power train is modeled one body, two bogies and four wheel axis as 38 degree of freedoms. The difference of each wheel forces are evaluated for running speed on the bridge upto the increasing target speed to propose new evaluation standards of traffic safety.

• 오순택(서울과학기술대학교 건설시스템디자인공학과 교수, 공학박사) | Oh, Soon Taek
• 이동준(서울과학기술대학교 건설시스템디자인공학과 강사, 공학박사) | Lee, Dong Jun