CAJ | 학술논문

弹性模量是结构分析的主要力学参数之一。目前，在结构分析中，钢筋混凝土构件的弹性模量取值多取素混凝土的弹性模量值，很少涉及配筋率对钢筋混凝土构件弹性模量的影响。推导了钢筋混凝土构件弹性模量与配筋率的关系，设计制作了11组共计33件不同配筋率的钢筋混凝土试件，分别测得各试件的弹性模量；用最小二乘法回归得到混凝土构件弹性模量和配筋率关系的曲线，回归结果与理论推导结果基本一致。列举了一个悬臂梁的算例，分析了弹性模量对结构分析的影响。研究结果表明，配筋率对钢筋混凝土构件的弹性模量有影响，进行结构动力计算且配筋率较高时，若忽略钢筋对构件弹性模量的影响，会引起较大的误差。
탄성모량시결구분석적주요역학삼수지일。목전，재결구분석중，강근혼응토구건적탄성모량취치다취소혼응토적탄성모량치，흔소섭급배근솔대강근혼응토구건탄성모량적영향。추도료강근혼응토구건탄성모량여배근솔적관계，설계제작료11조공계33건불동배근솔적강근혼응토시건，분별측득각시건적탄성모량；용최소이승법회귀득도혼응토구건탄성모량화배근솔관계적곡선，회귀결과여이론추도결과기본일치。열거료일개현비량적산례，분석료탄성모량대결구분석적영향。연구결과표명，배근솔대강근혼응토구건적탄성모량유영향，진행결구동력계산차배근솔교고시，약홀략강근대구건탄성모량적영향，회인기교대적오차。
Elastic modulus is an important mechanical parameter in analysis and design of reinforced concrete structures. The present value of elastic modulus,which has rare relation with ratio of reinforcement,is based on plain concrete.It deduced an equation between modulus of elasticity and ratio of reinforcement,and then an experimental study was conducted on 11 groups’ specimen of reinforced con-crete with different ratio of reinforcement. At last,an equation for elastic modulus of different reinforcement ratio determined by regres-sion,using least squared method,was described. A cantilever,whose dynamic characteristics and dynamic response were calculated,was taken as an example to analyze the influence of ratio of reinforcement on the structural analysis .The result showed that the ratio had effect on the elastic modulus. Moreover,if the general elastic modulus was ignored when calculate the dynamic response,it would cause de-viation.