我局折线窑设计小组于1980年5月份,为本局预制厂设计了年产1.6万立米混凝土预制构件的双孔折线窑。窑的内空断面为4.8×0.9米。内衬的竖壁及伸缩缝处为捣制混凝土,内衬的上下均铺设预制板。窑的水平投影长度75米(见图1)。在设计中,我们借鉴外地的经验,注意了温度变化对窑体结构的影响,而对窑体伸缩缝的处 In May 1980, the Bureau of Broken Line Kiln Design Group designed a two-hole folding line kiln with an annual output of 16,000 cubic meters of prefabricated concrete components for the precast plant. The internal section of the kiln is 4.8×0.9 meters. The lining vertical walls and expansion joints are made of concrete, and the inner lining is laid with prefabricated panels above and below. The horizontal projection length of the kiln is 75 meters (see Figure 1). In the design, we learn from the experience of foreign countries and pay attention to the effect of temperature changes on the kiln structure, and