[1]石春香,石 权,庄仁杰.多尺度再生随机骨料混凝土材料及梁试件分析[J].西安建筑科技大学学报(自然科学版),2022,54(02):237-241.[doi:10.15986/j.1006-7930.2022.02.010]
　SHI Chunxiang,SHI Quan,ZHUANG Renjie.Analysis of multi-scale recycled random aggregate concrete materials and beam specimens[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2022,54(02):237-241.[doi:10.15986/j.1006-7930.2022.02.010]
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多尺度再生随机骨料混凝土材料及梁试件分析()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
54
期数:
2022年02期
页码:
237-241
栏目:
出版日期:
2022-04-28

文章信息/Info

Title:
Analysis of multi-scale recycled random aggregate concrete materials and beam specimens
文章编号:
1006-7930(2022)02-0237-05
作者:
石春香1; 石 权1; 庄仁杰2
(1.上海应用技术大学 城市建设与安全工程学院,上海 201418; 2.上海市浦东新区建设(集团)有限公司,上海 200135)
Author(s):
SHI Chunxiang1; SHI Quan1; ZHUANG Renjie2
(1.School of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,China; 2.Shanghai Pudong New Area Constrution(Group)Co., Ltd.,Shanghai 200135,China)
关键词:
多尺度;  再生骨料混凝土;  细观结构
Keywords:
multi-scale;  recycled aggregate concrete;  meso-structure
分类号:
TU528
DOI:
10.15986/j.1006-7930.2022.02.010
文献标志码:
A
摘要:
编写MATLAB代码随机生成基于塑性损伤本构关系的随机骨料程序确定骨料的位置信息,针对再生骨料混凝土的损伤演化,从细观角度上认为再生骨料混凝土由多相材料夹杂而成并考虑其不同材料之间的层间效应,利用有限元软件DIANA分别建立二维再生随机骨料混凝土模型和多尺度耦合再生骨料混凝土梁模型,研究了单轴拉伸压缩下混凝土裂缝开展路径以及应力应变关系,并与已有实验结果进行比较,分析了三点受弯下不同骨料取代率再生混凝土梁的断裂行为.所建立的多尺度数值模型为再生骨料混凝土材料及结构分析提供了可行的研究途径.
Abstract:
MATLAB code was written to randomly generate random aggregate program based on plastic damage constitutive relation to determine the position information of aggregate. In view of the damage evolution of recycled aggregate concrete, it was considered from the mesoscopic point of view that recycled aggregate concrete was composed of multiphase materials. Considering the interlayer effect between different materials, two-dimensional recycled random aggregate concrete model and multi-scale coupled recycled aggregate concrete beam model were established respectively by using finite element software DIANA. The crack development path and stress-strain relationship of concrete under uniaxial tensile and uniaxial compression were studied and compared with the existing experimental results, and then, the fracture behavior of recycled concrete beams with different aggregate replacement ratios under three-point bending was analyzed. The established multi-scale numerical model can provide a feasible research approach for the material and structural analysis of recycled aggregate concrete.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-04-01修改稿日期:2021-04-20
基金项目:上海应用技术大学中青年科技人才发展基金资助(ZQ2021-28)
第一作者:石春香(1976—),女,副教授,博士,主要研究方向为结构分析及安全评价.E-mail:Scx76@sit.edu.cn
更新日期/Last Update: 2022-04-28