大跨度连续刚构箱梁防开裂施工技术研究

Study on Anti-cracking Construction Technology for Long-span Continuous Rigid Frame Girder

根据重庆黔江至湖北恩施高速公路阿蓬江特大桥施工实践,系统介绍了大跨度连续刚构箱梁防开裂施工技术。对于混凝土、施工等原因影响可能导致箱梁出现裂缝的成因进行了分析,有针对性的采取了一些裂缝预防和控制的措施,确保了施工的顺利进行。

According to the construction practice of the A Pengjiang Bridge on Qianjiang-Enshi Expressway, the construction technology of anti-cracking of long-span continuous rigid frame box girder is systematically introduced. The cracks which may be caused by concrete, construction and other reasons are analyzed, and targeted measures to prevent and control cracks are taken to ensure smooth construction.