摘要
对LC20和LC40两个强度等级的轻骨料混凝土(LWAC)进行单轴受压试验;依据汇总的LWAC本构关系、峰值应力与应变关系、轴心抗压强度与立方体抗压强度的公式和LWAC膨胀角、粘结系数和损伤因子等材料参数取值计算的假定,采用ABAQUS建立LWAC单轴受压有限元模型,将模拟结果与单轴受力试验数据对比发现两者吻合度较好,结果表明,LWAC本构关系、应力-应变曲线特征点公式与材料参数的假定适用于ABAQUS有限元模拟。
The uniaxial compressive loading test of lightweight aggregate concrete（ LWAC） with LC20 and LC40 is carried out; According to the stress- strain relationship of LWAC,relations between peak stress and peak strain,uniaxial compressive strength and cubic compressive strength gathered in this paper and the hypothesis of material parameter value of dilation angle,viscosity parameter and damage factor,the finite element model of the uniaxial compressive LWAC is established by ABAQUS. A comparison of calculated values by finite element method with experimental ones shows good agreement,which verifies that the stress-strain relationship of LWAC,the calculating formula of feature points and the hypothesis of material parameters can be applied to ABAQUS finite element simulation.
出处
《低温建筑技术》
2016年第5期6-8,15,共4页
Low Temperature Architecture Technology
基金
住房和城乡建设部研究开发项目"高层钢结构建筑新型楼盖体系关键技术研究"(2013-K2-21)
