BS5400与中国公路规范钢筋混凝土设计的比较

Comparison of BS5400 with Chinese Highway Code in Reinforced Concrete Design

研究目的:本文介绍英国规范BS5400的第四部分钢筋混凝土设计。具体从钢筋混凝土梁、板、柱、墙、基础以及一些设计细节等方面进行介绍,加深对BS5400规范中钢筋混凝土设计的认识,为国内施工设计工程师更好地了解BS5400规范,开拓更为广阔的国际市场提供帮助。研究结果:混凝土强度设计值两规范比较接近,中国公路规范钢筋受压强度特征值除以结构重要性系数1.1以后与BS5400相同。在钢筋混凝土梁的计算实例中,BS5400计算的结果为Mu=5 266 kN·m,中国公路规范计算的结果为Mu=4 630 kN·m,计算结果基本接近。但中国规范要略偏安全。矮柱设计中,中国规范偏于安全,BS5400偏于经济。在构造要求上,中国规范最小布筋率要小于BS5400的要求。

Research purposes： The introduction is given in this paper to the specifications in BS5400 PART 4 ： Code of practice for design of concrete bridges, mainly to the designs of reinforced concrete beams, slabs, columns, walls and bases in details for the purpose of helping our civil engineers to better understand the specifications of BS5400 for reinforced concrete design to open up the international construction market. Research results： It is similar in concrete design strength between BS5400 and Chinese Highway Code and after being divided by 1.1, the value of reinforced characteristic strength in the Chinese Highway Code is similar to that in BS5400. In reinforced concrete design, the calculated result as BS5400 is Mu = 5266 kN· m , the calculated result as Chinese Highway Code is Mu = 4630 kN · m, these calculated results are the basically same. Chinese Highway Code is safer than others. On short columns design, it focuses on safety in Chinese highway codes; while for BS5400, more consideration is given for economical result. On considerations affecting design details, the miniMum areas of reinforcement in members in Chinese Highway Code is Much less than BS5400.