有粘结预应力加固体系在连续箱梁加固中的应用

The application of the bonded pre-stress in continuous box girder strengthening design

分析了某大桥旧桥裂缝病害的原因,通过比选不同加固方案,选取了有粘结预应力加固方法。经过对一些关键因素对比计算分析,确定该方法的加固设计参数,取得了良好的加固效果,为类似加固设计提供了有益的参考。

This paper analyzes the causes of crack disease for an old bridge, according to comparing and selecting different strengthening schemes, and has selected the bonded pre--slress strengthening design. Comparison and Analysis of some key factors, this paper has determined the design parameters of this strengthening design, getting good strengthening effect and offering beneficial references to other Similar strengthening designs.