为了避免建筑物由于过长而受到气温变化的影响或因荷载不同及地基承载能力不均;或在地震区地震力对建筑物的作用等因素,致使建筑构件内部发生裂缝或破坏,故在设计时事先将建筑物分为几个独立的部分,使各部分能自由变形,这种将建筑物垂直分开的缝统称为变形缝。 In order to avoid the buildings being affected by the temperature change due to being too long or due to the different loads and the uneven bearing capacity of the foundation or the earthquake force acting on the building in the earthquake area and other factors causing cracks or destruction in the building components, When the building is divided into several independent parts, so that all parts of the deformation can be free, this vertical separation of the building will be collectively referred to as deformation joints.