基于细观层次的透水混凝土二维建模方法研究  

Study on 2D Modeling Method of Pervious Concrete Based on Meso-level

作　　者：张燕坤 周李 何世钦 ZHANG Yankun;ZHOU Li;HE Shiqin(School of Civil Engineering,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学土木工程学院,北京100144

出　　处：《建筑施工》2025年第3期357-360,共4页Building Construction

基　　金：北方工业大学“混凝土与砌体结构设计”课程建设项目资助。

摘　　要：为实现透水混凝土细观数值模拟,基于离散元理论,采用随机骨料模型提出细观结构由粗骨料、水泥裹浆构成的数值模拟建模方法。使用体积法计算出各组分之间的比例,通过离散元的引入,模拟粗骨料投放过程中的相互碰撞及作用,以及对模型施加压力,模拟试件静压成型,使骨料密实,达到目标孔隙率,得到骨料在少量浆体支撑下的稳定形态,最终生成基于随机骨料的透水混凝土模型。使用Python语言,在Abaqus平台的基础上进行二次开发,建立了透水混凝土的细观力学分析模型,并验证了该建模方法的有效性。To achieve mesoscopic numerical simulation of pervious concrete,a mesoscopic modeling method based on discrete element theory and a random aggregate model is proposed.The mesoscopic structure consists of coarse aggregate and cement paste.The volume method calculates the proportions of each component.Discrete elements are used to simulate interactions and collisions between coarse aggregate during placement.Pressure is applied to simulate static compression molding of the specimen,ensuring compaction of the aggregate to meet the target porosity.This process generates a stable arrangement of aggregate supported by a small amount of paste,forming a pervious concrete model based on random aggregate.Python is utilized for secondary development on the Abaqus platform to establish a mesoscopic mechanical analysis model of pervious concrete,and the validity of this modeling method is validated.

关 键 词：透水混凝土 随机骨料模型 细观层次 数值模拟 

分 类 号：TU528[建筑科学—建筑技术科学]