基于有限元方法和测试结果确定钢筋混凝土构件的弹性模量  

Determination of elastic modulus of reinforced concrete component based on finite element method and test results

作　　者：屈铁军[1] 徐建[1] 石云兴[2] 

机构地区：[1]北方工业大学土木工程学院,北京100041 [2]中国建筑股份有限公司技术中心,北京101300

出　　处：《混凝土》2015年第7期136-139,共4页Concrete

基　　金：北京市自然科学基金资助(8142015)

摘　　要：为探究配筋率对钢筋混凝土构件弹性模量的影响,制作了6种不同配筋率的钢筋混凝土构件和2种配筋率的钢筋混凝土试块。测得了构件在指定荷载下的变形,然后将荷载和变形作为已知条件,代入有限元分析软件求得构件弹性模量。经回归分析得到钢筋混凝土构件的配筋率与弹性模量之间的关系。研究结果表明,配筋率与弹性模量之间呈线性关系。在经济、常用配筋率下,配筋率对不同的钢筋混凝土基本构件弹性模量的影响不同。弹性模量的取值应该根据实际情况考虑配筋率的影响。For investigating the influence of reinforcement ratio on the elastic modulus of reinforced concrete component,6 groups rein-forced concrete components and 2 groups specimens with different reinforcement ratio were made. The deformation was measured under a specified load,then the elastic modulus was determined by the finite element analysis software based on the known deformation. The relationship between the reinforced ratio and the elastic modulus was obtained through the regression. The results show a linear relation-ship between the reinforcement ratio and elastic modulus. Under economic and frequently used reinforcement ratio,different reinforce-ment ratios have different influence to various basic components of reinforced concrete. According to the actual situation,the effect of re-inforcement ratio should be considered in the value of elastic modulus.

关 键 词：钢筋混凝土 配筋率 弹性模量 有限元 

分 类 号：TU528.01[建筑科学—建筑技术科学]