网站转让 → 您的公司名称

温度变化引起的混凝土裂缝
Concrete Cracks Caused by Temperature Change
混凝土具有热胀冷缩性质，当外部环境或结构内部温度发生变化，混凝土将发生变形，若变形遭到约束，则在结构内将产生应力，当应力超过混凝土抗拉强度时即产生温度裂缝。在某些大跨径桥梁中，温度应力可以达到甚至超出活载应力。温度裂缝区别其它裂缝最主要特征是将随温度变化而扩张或合拢。
Concrete has the property of thermal expansion and cold contraction. When the external environment or the internal temperature of the structure changes, concrete will deform. If the deformation is restrained, stress will occur in the structure. When the stress exceeds the tensile strength of concrete, temperature cracks will occur. In some long-span bridges, the temperature stress can reach or even exceed the live load stress. The main characteristic of temperature crack is that it expands or closes with the change of temperature.