大体积混凝土结构在土木工程中常见,如工业建筑中的设备基础;在高层建筑中地下室底板、结构转换层;各类结构的厚大桩承台或基础底板以及桥梁的墩台等。其上有巨大的荷载,整体性要求高,往往不允许留施工缝,要求一切连续浇筑完毕。大体积混凝土在施工中经常会出现裂缝,影响工程质量,造成很大损失,因此,分析探讨裂缝成因及控制裂缝发生的措施,保证工程质量,具有十分重要的意义。 Massive concrete structures are common in civil engineering, such as the equipment foundation in industrial buildings; in the basement floor of high-rise buildings, the structural transformation layer; thick pile caps or foundation slabs of various structures and piers of bridges. It has a huge load, the overall requirements of high, often not allowed to stay construction joints, requiring all the continuous pouring completed. Massive concrete often cracks in the construction, affecting the quality of the project, resulting in great losses. Therefore, it is of great significance to analyze and discuss the cause of cracks and the measures to control the occurrence of cracks to ensure the quality of the project.