CAJ | 학술논문

在恒温恒湿的实验室内进行混凝土受压柱的徐变试验．运用最小二乘法，拟合徐变应变随时间发展的曲线对配筋混凝土与素混凝土的徐变应变进行对比．研究结果表明，普通钢筋能有效地抑制混凝土徐变．基于实测徐变应变数据提出了较精确的混凝土徐变系数预测模型，运用最小二乘法获得了普通钢筋对混凝土构件徐变影响系数．研究结果表明，混凝土结构设计规范对于钢筋混凝土柱中钢筋对混凝土徐变的影响估计不足．
재항온항습적실험실내진행혼응토수압주적서변시험．운용최소이승법，의합서변응변수시간발전적곡선대배근혼응토여소혼응토적서변응변진행대비．연구결과표명，보통강근능유효지억제혼응토서변．기우실측서변응변수거제출료교정학적혼응토서변계수예측모형，운용최소이승법획득료보통강근대혼응토구건서변영향계수．연구결과표명，혼응토결구설계규범대우강근혼응토주중강근대혼응토서변적영향고계불족．
The creep experiment of compressed concrete column is conducted in the lab under the condition of constant humidity and temperature. A fitting curve of creep development over time is obtained through the least square method. The solution of the creep comparison between the reinforced concrete and the plain concrete shows that the reinforcing steel can effectively restrain the creep. A precise model to predict the concrete creep coefficient is established based on the creep strain data of actual measurement. The influence coefficient of reinforcing steel for concrete member is gained by applying the least square method.