The paper classifies the reinforced concrete bridge structures in the construction and the operation process,analyzes the reasons for the cracks,and points out the relative prevention and maintenance methods,so as to avoid the cracks of the dangerous structures and to ensure the operation safety of the bridges.%针对钢筋混凝土桥梁结构在施工与运营过程中出现的裂缝进行了分类,并对裂缝成因进行了分析,同时提出了相应的预防与修补方法,以避免出现危害结构的裂缝,确保桥梁运营安全。
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