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在建筑设计中,由于现代建筑设计体形,单层平面越来越庞大,功能也越来越复杂,对结构设计的要求越来越高。在结构设计上,则存在一个设置伸缩缝的问题,伸缩缝主要解决混凝土收缩和正常使用时温差的问题。处理混凝土收缩比较容易,在适当位置设置后浇带用高一级标号砼或微膨胀砼后捣,不设专门缝的方法可以解决问题;但后浇带不能代替伸缩缝,在正常使用的情况下,温度变化引起的砼收缩则必须用设缝的方法去解决。根据混凝土结构设计规定,框架结构、剪刀墙现浇式结构伸缩缝
In architectural design, due to the modern architectural design shape, the single-layer plane is more and more bulky, the function is more and more complex, and the requirements for structural design are getting higher and higher. In the structural design, there is a problem of setting the expansion joints. The expansion joints mainly solve the problems of concrete shrinkage and temperature difference during normal use. It is relatively easy to deal with concrete shrinkage. After setting up the post-pouring belt with a high-grade mark or a micro-expansion niobium in an appropriate position, no special sewing method can solve the problem; but the post-pouring belt cannot replace the expansion joint, in normal use. Under the circumstances, the enthalpy shrinkage caused by temperature changes must be solved by setting the seams. According to the concrete structure design regulations, the frame structure and scissors wall cast-in-place structure expansion joints