中英混凝土结构设计规范的材料特性对比

Comparison of material property between Chinese and British concrete structure design specifications

为便于采用英国规范设计时的材料选用,对中英混凝土结构设计规范的混凝土和钢筋材料特性进行对比。结果表明,中国规范的钢筋材料分项系数比英国规范高,但混凝土材料的分项系数则相反;同强度等级的混凝土,英国规范的抗压强度标准值比中国规范高;除C15强度等级外,中国规范的其他强度等级的混凝土弹性模量均高于英国规范;中英规范关于混凝土剪切模量和泊松比以及钢筋弹性模量的规定基本相同。

In order to easily select materials when design according to British specification,we compare the properties of concrete and reinforcement between Chinese and British specifications.The results show that the partial safety factor of reinforcement in Chinese specification is higher than that of British specification, but the partial safety factor of the concrete is the contrary. For the same strength grade concrete, the characteristic value of the compressive strength in British specification is higher than that of Chinese specification. Except for C15 strength grade,the elastic modulus of concrete in Chinese specification is higher than that of British specification.The shear modulus and Poisson’s ratio of concrete,and the elastic modulus of reinforcement are approximately the same in both specifications.