普通钢筋混凝土连续箱梁裂缝检测分析与处治的研究

通过四川成南高速公路嘉陵江大桥(西引桥)普通钢筋混凝土连续箱梁顶、底、翼板出现裂缝的问题,根据现场检测资料分析,就其裂缝产生的原因,裂缝对桥梁结构的影响及裂缝处治和加固进行探讨和实践,并就同种桥梁结构设计、施工工艺、材料选择和养护工艺等方面提出预防与控制裂缝的措施,并取得成功经验,具有一定的实用价值。

Analysis of Cracks on Reinforced Concrete Continuous Box Beam and Controlling Methods Study

Many cracks are discovered on the top,bottom and flank for the box beam of west bridge approach of Jia Ling River Bridge which is made of reinforced concrete continuous box beam and located at Chengdu-Nanchong expressway in Sichuan province.This paper analyzes the cause of cracks on the basis of the datum from the checking and measurement in situ and discusses the effect of the cracks on stability of the bridge.According to the structure design,material,construction and maintain technological process,the methods of controlling crack are put forward,and the effect is very good.The success experiences have important practical value..