预应力混凝土连续梁桥箱梁底板裂纹成因分析

Analysis on Reasons for Cracks of Bottom Plate for Box Beam of Prestressed Concrete Continuous Beam Bridge

底板裂纹是箱梁常见的病害之一,为了分析箱梁底板裂纹出现的原因,结合某预应力混凝土连续梁桥,对全桥裂纹具体分布进行了详细的记录和描述,根据现场实测箱梁底板裂纹分布的情况,分析了底板裂纹产生的原因,同时提出了相应的整改措施,供相关人员参考。

The cracks of bottom plate are one of common diseases of box beam. In order to analyze the reasons for cracks of bottom plate for box beam,the records and description on the specific distribution of cracks of the whole bridge are made in detail by combining a prestressed concrete continuous beam bridge. According to the situation of crack distribution of bottom plate for the field measurement box beam,the reasons for cracks of bottom plate are analyzed,and meanwhile the corresponding rectification measures are put forward,so as to provide reference for relevant personnel.