预应力混凝土连续刚构桥是目前常见的大跨径桥型之一,但随着桥梁跨径的增大,以及新材料新技术的广泛应用,其0#块大体积混凝土水化热、收缩变形等导致的裂缝问题也在施工或使用过程中慢慢凸显出来,必须引起我们的足够重视。本文以某大跨径预应力混凝土连续刚构桥为主要工程背景,对裂缝成因及防治进行探讨。 Prestressed concrete continuous rigid frame bridge is one of the common long-span bridges, but with the increase of bridge span and the extensive application of new materials and new technologies, the bulk concrete of 0 # block hydration heat, shrinkage Cracks caused by deformation and other problems are also gradually highlighted during construction or use, we must cause enough attention. In this paper, a large span prestressed concrete continuous rigid frame bridge as the main project background, the causes of cracks and prevention are discussed.