混凝土二维随机骨料生成和投放的均匀性判别

Determination of Uniformity in the Generation and Placement of Two-Dimensional Random Aggregate in Concrete

基于Python语言,针对面积控制和颗粒控制两种骨料投放量控制方式,编制了对应的圆形、椭圆形的三级配投放程序。并提出骨料均匀性判别方法:将试件截面划分为三个区域,以各个区域的骨料面积占比判断其是否均匀,并编制了对应程序。算例表明,部分未经均匀性筛选试样的骨料有聚集现象,增加均匀性判别后生成的试样,其骨料既满足位置和形状的随机性,也符合均匀性要求。

A three-level program of round and ellipse distribution is compiled for the two aggregate quantity control modes of area control and particle control by Python language.The section of the specimen is divided into three areas,and the aggregate area ratio of each area is used to judge whether the sample is uniform or not,and the corresponding program is compiled.The numerical examples show that some aggregates of samples without uniformity screening have aggregation phenomenon,and the aggregates generated after uniformity discrimination not only meet the randomness of position and shape,but also satisfy the uniformity requirements.