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我厂冷库建于一九五八年,投产于一九六三年,并在一九七一年、一九七五年先后二次大修。现把有关情况简述如下:一、冷库大修冷库是单层砖木结构,地坪辅有600毫米厚的炉渣隔热层,陶瓷管自然通风。一九六三年投产使用二年后就发现地坪冻臌变形。随着使用年限增加,冻臌变形日趋历害,屋架木结构变形,一九七○～一九七一年多次导致氨回气管破裂跑氨。一九七一年三月决定大修。这次大修只限地面部分,把内木隔墙、外墙内表面、屋顶全部和砖柱拆除,改修为钢筋混凝土柱、屋面和无梁楼板,屋顶为密封阁楼,内墙
Our factory cold storage was built in 1958, put into operation in 1963, and in 1973, 1975 has two major overhauls. Now the situation is briefly described as follows: First, cold storage cold storage is a single brick structure, floor supplemented by 600 mm thick slag insulation, ceramic tube natural ventilation. Two years after it was put into operation in 1963, it has been found that the ground is frozen. With the increase of the service life, the deformation of the frozen pumice became more and more detrimental, the deformation of the wooden truss structure was changed. From 1970 to 1971, the ammonia back to the gas pipe ruptured repeatedly and ran ammonia. March 1973 decided to overhaul. The overhaul only limited to the ground floor, the internal wood partitions, the external walls of the external walls, roofs and brick columns removed, rehabilitated into reinforced concrete columns, roofing and beamless floor, the roof is sealed loft, the inner wall