论文部分内容阅读
通过土体材料的土工试验及泥浆立方体、土坯和土坯砌体单轴抗压试验,分析了土体材料的工程性质和单轴受压下土坯砌体的应力-应变关系。建立了泥浆立方体、土坯和土坯砌体的弹性模量与其抗压强度之间的关系方程,提出了土坯砌体抗压强度的简化计算公式。基于Weibull分布的损伤统计强度理论,利用应力-应变曲线峰值点的特征,建立了损伤修正统计本构模型,并与试验数据进行了比较,验证了损伤修正统计本构模型。研究表明:土坯砌体损伤统计本构模型,在峰值应力前期,损伤修正统计本构模型与试验数据吻合很好;在峰值应力后期,由损伤修正统计本构模型计算的应力值比土坯砌体试验应力值偏小。研究结果可为土坯砌体墙的抗震性能研究提供理论参考。
Through the soil test and the uniaxial compressive test of mud cube, adobe and adobe masonry, the engineering properties of soil material and the stress-strain relationship of masonry under uniaxial compression are analyzed. The equation of the relationship between the elastic modulus of the masonry, adobe and adobe masonry and the compressive strength of the masonry, the simplified formula of the compressive strength of the masonry masonry is proposed. Based on the Weibull distribution of statistical strength of damage theory, a statistical model of damage correction is established by using the characteristics of the peak point of the stress-strain curve. Compared with the experimental data, the statistical statistical model of damage correction is verified. The results show that in the early stage of peak stress, the statistic model of damage correction coincides well with the experimental data. In the later stage of peak stress, the stress value calculated by the damage correction statistical constitutive model is higher than that of the adobe masonry Test stress is small. The results can provide a theoretical reference for the study of the seismic performance of masonry walls.