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在未談热加工車間結構选擇問題之前,要先談一下一般車間結構形式的选擇原則,因为这些原則也适用于热加工車間。一般車間的結構形式及建筑材料的选擇是根据下面三个原則确定的: 1.技术可能性——根据車間高低、跨度大小、吊車起重量、施工条件等来决定。主要目的是为了保証結構安全。过去一般中大型車間,如18公尺跨度、12公尺下弦高度、30吨吊車的厂房差不多都做鋼結構;但从施工水平搞高、予应力鋼筋混凝土結構逐漸推广以来,已经有很大一部分鋼結構被予应力鋼筋混凝土結構所代替。如24公尺、30公尺跨度的屋架已普遍用予应力鋼筋混凝土的了。目前60公尺跨度的予应力鋼筋混凝土屋架已經試制成功,无论在强度、撓度、抗裂性等方面都合乎要求。吊車梁方面,6公尺跨的75吨中
Before discussing the structure selection of hot-working workshops, it is necessary to talk about the selection principles of general workshop structural forms, because these principles also apply to hot-working workshops. The structure of the general workshop and the selection of building materials are determined according to the following three principles: 1. Technical possibilities - It is determined according to the height of the workshop, the size of the span, the weight of the crane, and the construction conditions. The main purpose is to ensure the safety of the structure. In the past, large and medium-sized workshops, such as plants with 18-meter span, 12-meter lower string height, and 30-ton cranes, were almost all made of steel structures; but since the construction of high-rise, pre-stressed reinforced concrete structures has been gradually promoted, there has been a large part The steel structure is replaced by a prestressed reinforced concrete structure. For example, truss spans of 24 meters and 30 meters span are commonly used for prestressed reinforced concrete. At present, the 60-meter-span prestressed reinforced concrete truss has been successfully trial-produced and meets requirements in terms of strength, flexibility, crack resistance, and the like. Crane beam, 75 ton of 6-meter span