INVESTIGATION OF CONSTRUCTION ERRORS OF THE COVER FOR RAILWAY RC RIGID FRAME VIADUCTS

Abstract

To evaluate the durability of a concrete structure, it is important to secure the precision of the cover. In this study, we surveyed the construction errors of the covers of railway RC rigid frame viaducts constructed in recent years, and clarified that the errors in covers were different at different parts and larger with pillars caused by the overall shift of reinforcing bars. Based on the study results, we proposed a value of allowable construction error for the design of railway RC rigid frame viaducts.