Nose-Deck Interaction in ILM Bridge Proceeding with Tapered Sectional Launching Nose

변단면 압출 추진코와 ILM교량 상부구조와의 상호작용

The ILM(incremental launching method) bridge, which is one of PS(prestressed) concrete bridge construction methods is widely adopted in Korea owing to its effectiveness for the quality control in construction. The purpose of this study is to analyze the structural behavior of ILM bridge proceeding with tapered sectional launching nose. This study presents basic technical materials to achieve the optimum design for superstructure and launching nose of ILM bridge. First this study introduces an equation to analyze the interaction between launching nose and superstructure. In this process, relative length, weight, and flexural stiffness between launching nose and superstructure are considered as investigating parameters. Second, the effects of superstructure resulting from these parameters is estimated analyzed by using the induced equations.