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装配式简支转连续梁桥在主梁预制张拉过程中容易产生斜向裂缝,在存梁期间极易出现反拱过大的情况。本文通过对某高速公路简支转连续梁桥40m箱梁为工程背景,研究箱梁在预制过程中的受力特性,以期为施工和设计提供一些理论支持。
Assembled simply supported to continuous beam bridge tend to produce oblique cracks in the prefabricated tensioning of the main beam. In this paper, a 40m box girder with a simple support to a continuous bridge on an expressway is taken as the engineering background to study the mechanical characteristics of the box girder in the process of prefabrication, in order to provide some theoretical support for construction and design.