Abstract:

For the design of vertical reinforcement for the short column of petrochemical vertical vessel foundation, the design methods commonly used in domestic are different from those in foreign codes(including American standards and European standards). By comparing the requirements of two relevant American standards, and combining with the reduction method of the minimum reinforcement ratio of mass reinforced concrete members in other domestic industry standards and specifications, some suggestions are put forward. In the design and calculation of the vertical reinforcement of the short column of the tower foundation, the checking calculation of bolt force transmission should be added. The minimum reinforcement ratio of vertical reinforcement for short column of circular tower foundation is 0.4%. For the minimum vertical reinforcement ratio of short column of large-scale cylindrical tower foundation, it is recommended to consider the short column of circular foundation after deducting the central part of concrete. For short columns with diameter between 2 000 mm and 6 500 mm, reinforcement ϕ18 mm, ϕ20 mm, and the spacing of 200 mm can meet the requirements.

Key words: petrochemical, vertical vessels, tower foundation, pier, vertical reinforcement, stress analysis, minimum reinforcement ratio

摘要：

对于石油化工立式容器基础短柱的竖向钢筋设计，国内常用的设计方法和国外规范(包括美国标准和欧盟标准)的设计计算方法不尽相同。通过对比美国两个相关标准的要求，结合国内其他行业标准规范中有关大体积钢筋混凝土构件最小配筋率的折减方法，提出了建议：在进行塔基础短柱竖向钢筋的设计计算时，增加螺栓传力的验算；圆环式塔基础短柱竖向钢筋最小配筋率取0.4%;对于大尺寸圆柱式塔基础的短柱竖向钢筋最小配筋率，建议扣除中心部分混凝土后按照圆环式基础短柱考虑；对于直径在2 000～6 500 mm的短柱，配筋ϕ18 mm、ϕ20 mm,间距200 mm,可以满足要求。

关键词: 石油化工, 立式容器, 塔基础, 墩台, 竖向配筋, 受力分析, 最小配筋率