变形缝的设置（Setting of deformation joint）.doc

变形缝的设置（Setting of deformation joint） Setting of deformation joint Deformation joints are expansion joints, settlement joints and shock joints. The building is affected by various factors, such as temperature changes, the effect of the buildings affected by different loads, or the effect of building, structure adjacent the difference or because of differences in the effects of foundation bearing capacity and seismic effect, will make the building deformation, cracking, cause the structure damage caused by this, so in the design of current first buildings will be divided into several independent parts, each part of the free deformation. The vertical separation of the building is called the deformation joint. The role of deformation joint is to prevent the deformation and cracking of the building under the influence of external factors, so as to destroy the structure. To prevent the influence caused by temperature deformation and setting deformation joint, called temperature expansion joint; prevent due to load, structure form and foundation ability difference of deformation resulting from uneven settlement of the influence of the joint call settlement joint; prevented by the impact of the earthquake and setting deformation joint called seismic joint. Two 、 the setting of deformation joint (I) expansion joint The wall of the building and other components are often due to changes in temperature and thermal expansion and contraction of irregular destruction, to prevent the occurrence of such a situation, the appropriate position along the length of the building should be provided with a vertical slot, namely the expansion joint (Wen Dufeng). Expansion joints should start from the top of the foundation and break off the walls, floors and roofs. Based in part because buried in the ground, less affected by temperature, so there is no need to disconnect, such as the roof tile roof, the roof also do not need the other joints, the roof itself has the possibility of invar expan