摘要
基于二维刚体弹簧元数值模拟法，计算得出了峰值应力为16．49～34．97MPa的4个强度等级轻骨料混凝土的单轴受压应力-应变全曲线，并与2种试验拟舍曲线进行了对比,结果表明：二维刚体弹簧元数值模拟法能很好地预测不同强度等级轻骨料混凝土的峰值应力、峰值应变，且计算得出的应力-应变全曲线与试验结果吻合很好，因此该法可应用到轻骨料混凝土的结构分析中,根据二维刚体弹簧元数值模拟法计算结果，建议了一个较为简单的有理分式作为轻骨料混凝土单轴受压应力-应变全曲线的解析表达式．
Using the 2D rigid body spring model, the full compressive stress-strain curves of lightweight aggregate concrete （LWAC） were obtained for four strength levels varying from 16.49-34. 97 MPa. The numerical analysis results were compared with two experimental findings and their conclusions. The final conclusions indicate that the predicted results by 2D rigid body spring model agreed well with the experimental factors in the peak stress and the corresponding strain, and the full compressive stress-strain curves. Moreover, a simple formula for the full stress-strain curves of LWAC under uniaxial compression was proposed.
出处
《建筑材料学报》
EI
CAS
CSCD
2008年第2期138-143,共6页
Journal of Building Materials
基金
教育部创新团队资助项目(IRT0518)
关键词
轻骨料混凝土
二维刚体弹簧元
应力-应变全曲线
lightweight aggregate concrete
2D rigid body spring model
full stress-strain curve
