Dynamic Stability during Transportation of Bridge Caisson

J. Ocean Eng. Technol. 2009;23(1):104-108.

Jo Chul-Hee,Kim Sung-Jun,Cheong Hyun

Naval Architecture and Ocean Engineering Inha University,Naval Architecture and Ocean Engineering Inha University,Ocean Space Inc.

교량 케이슨 운송의 동적 안정성 고찰

조철희,김성준,정현

인하대학교 선박해양공학과,인하대학교 선박해양공학과,오션스페이스(주)

Keywords: Heavy caisson, Floating dock, Mooring force, Environmental loads, Transportation load conditions, Carne barge

핵심용어: 케이슨, 플로팅 도크, 계류력, 환경하중, 운송 하중 조건, 크래인 바지

Abstract

As the demands of ocean resource development increase, many offshore structures are required. To cope with the active ocean developments, many types of construction methods have been applied for offshore facilities, including oil, gas and harbors. One of the challenges is to transport and install the heave bridge caisson. Several construction methods are well understood. However, for the sake of safety and reliability, the F/D installation method can be utilized. While the caisson is carried by an F/D, the mooring force of the tug boat and the structure stability from exiting motions in the dock should be checked against external loadings and sea conditions. The external loads can be classified with wind force, current force, and wave force. In the stability analysis, transportation velocity and draft of F/D are important factors. The dynamic stability and hook load for crane barge installation for the same caisson are also studied. Considering external loads and dominant factors, the stability of caisson during transportation has been investigated.