CONTINUOUS COMPOSITE RAHMEN BRIDGE SYSTEM USING PRECAST GIRDER AND CONSTRUCTION METHOD THEREOF

摘要

Disclosed are a continuous composite Rahmen bridge system using precast girders and a construction method thereof. In the system, negative moment generated at an inner position on a bridge pier is canceled out by compressive force introduced by primarily raising and lowering precast girders at the inner position and negative moment generated at an outer position on the abutment is canceled out by compressive force introduced by secondarily raising the precast girders at the inner position to or slightly above a horizontal level, enabling construction of a structurally sound two or more span continuous bridge. Further, integration of lower structures including the abutment and the bridge pier and upper structures including the precast girders enables construction of a statically indeterminate structure. This increases moment distribution effects, reducing vibration due to live load and increasing the ability to withstand dynamic load such as in the event of an earthquake.