8경간 연속화 프리스트레스 거더교의 시공 계측 및 분석 -서울교 확장교량 적용

Construction Sequence Measurement & Analysis for Continuous 8-span Prestressed Concrete(PSC) Girder Bridge

The widened Seoul-Bridge is the first continuous 8-span prestressed concrete(PSC) girder bridge in domain. The construction sequence of the bridge consists of S steps in a large way. The measuring in construction stage includes the determination of the allowable fluctuation value of beam stress in each step and the measurement beam stress during prestessing. The measured tendon prestress force was compared with the design value. When it was compared with the analytic result, the difference between the measured stress and the analytic stress was below allowable error. The friction loss and the anchorage slip loss of the tendon prestress force was lower than the design loss value.