先简支后连续梁桥负弯矩区孔道压浆病害控制

Disease Control of Grouting in Negative Moment Area of Simply Supported Continuous Beam Bridge

先简支后连续梁桥结构兼顾了简支与连续体系的优点,可以减少桥墩上的伸缩缝,增强结构的整体性和行车的舒适性,既施工方便又经济合理。在这类桥梁的设计与施工过程中,对负弯矩区孔道压浆的质量进行控制,是保证工程质量的关键之一。

The structure of simply supported continuous beam bridge can reduce the expansion joint of bridge ier and increase the integrity of structure and the comfort of driving.It is both convenient in construction and conomic rationality.Meanwhile,it also has the advantage of simply supported and continuous structure.In this ype of bridge design and construction process,it is one of the keys to ensure project quality to control the quality of grouting on the negative moment area.