Preflex beam manufacturing method to prevent the loss of compressive stress and Loading Apparatus therefor

摘要

The present invention relates to a method of producing a pre-flex beam (Preflex Beam) forming a structure such as a bridge molds and loading device for use thereof, specifically, the lower flange in the production of pre-flex beam, one I-beams all programs predetermined transient load until they are needed for the actual pre-flex beam after not removing the reflection load at a time, releasing the profile reflection load had been applied and then pouring concrete in the instant all the vertical loads, i.e., I-beams consistently by adding, to creep, after the element is causing the compressive stress losses shrinkage that has occurred to some extent, service load of by is a concrete, physical interface of the compression stress caused by the pre-flex to remove the temporary load was added and the lower flange according to the preparation method to respond appropriately to the tensile stress.