关键词: 空冷器, 框架, 工程造价, 钢结构, 现浇混凝土, 预制混凝土, 施工工期

Abstract:

Pipe rack is a common structural unit in petrochemical unit, and the steel structure design scheme is mostly used at present. Due to its high cost, the need to paint fireproof materials, and susceptibility to tarnishing, the design of the pipe rack structure still has room for optimization. The article focuses on analyzing the cost, construction period and overall advantages and disadvantages of the three structural forms of steel structure pipe rack, cast-in-place concrete pipe rack and precast concrete pipe rack. It can be seen that the cost of prefabricated concrete pipe rack is 79% of that of steel structure, and the construction period is basically equivalent to that of steel structure; it not only overcomes the disadvantages of high cost of steel structure, but also solves the problem of long construction period of cast-in-place concrete; at the same time, it has many advantages such as high strength, durability, environmental protection, economy and aesthetics. It can be widely used in pipe racks and pipe corridors of petrochemical enterprises.

Key words: air cooler, framework, engineering cost, steel structure, cast-in-place concrete, prefabricated concrete, construction period