建筑工程混凝土结构裂缝非常普遍。虽然非结构性裂缝不致影响构件承载力和结构安全性,但却会影响结构耐久性和整体性。裂缝已经成为影响建筑工程质量的一大关键问题。本文结合实践探讨建筑工程中钢筋混凝土地下室外墙混凝土在终凝到三周龄期间由于混凝土收缩和“箱形”结构内外温差共同引起的温度收缩裂缝成因及预防措施、工艺。 Construction Cracks in concrete structures are very common. Although non-structural cracks will not affect the component bearing capacity and structural safety, but it will affect the structure durability and integrity. Cracks have become a key issue affecting the quality of construction projects. In this paper, the causes of temperature shrinkage cracks caused by the shrinkage of concrete and the temperature difference between the inside and the outside of the box-shaped structure during the final setting to three weeks of age are discussed in combination with practice.