Continuous Preflex Girder Structure Using Prestress in Parent Section Using Expanded Concrete and Its Construction Method

摘要

The present invention relates to a continuous preflex girder structure in which a prestress is introduced into a parent section using expanded concrete, and a construction method thereof. After connecting to the preflex girder, form regular intervals in the regular moment section and the parent section section at regular intervals to pour general concrete on the abdomen, haunch, and bottom plate. After installing and curing the poured concrete is characterized by placing the expanded concrete by forming the abdomen, haunche, bottom plate between the unfilled ordinary concrete.;The continuous preflex girder structure in which the prestress is introduced into the parent section using the expanded concrete presented in the present invention and its construction method can omit the raising and lowering of the inner point as in the prior art, thereby making construction simple and fast. As such, it may be possible to use a bridge structure that can replace the existing technology.;Expanded concrete