1984年武钢四号高炉准备大修,决定对出铁场进行改造。东西两个出铁场(图1)面积共计1546m~2,由于工艺流程的改进,出铁场的堆砂高度约增加2m,相当于出铁场的荷重增加约30000N/m~2。经过验算,柱子和基础强度足够,但平台梁和板的强度不够,需要采取加固措施。 In 1984, WISCO’s No. 4 blast furnace was overhauled and it was decided to reform the casting yard. The total area of ​​the two east-west cast iron fields (Fig. 1) is 1546m~2. Due to the improvement of the process flow, the pile height of the cast iron field is increased by about 2m, which is equivalent to the increase of the load of the cast iron field by about 30,000N/m~2. After checking, the strength of the columns and the foundation is sufficient, but the strength of the platform beams and plates is not enough and reinforcement measures are required.