基于模糊层次分析的再生粗骨料综合分级方法
Method for Comprehensive Grading of Recycled Coarse Aggregate Based on Fuzzy Hierarchical Analysis
袁观富 1李一诺2
作者信息
- 1. 湖北省工建集团有限公司,武汉 430076
- 2. 武汉理工大学土木工程与建筑学院,武汉 430070
- 折叠
摘要
再生骨料的质量对再生混凝土的性能有决定性的影响;骨料的准确分类,对充分发挥骨料性能,提高再生骨料混凝土的应用效果有重要作用.骨料分级标准具有典型模糊性,宜选择关键材料特性指标为基础,采用模糊层次分析法(AHP),建立质量等级的综合分级方法.根据指标对再生骨料混凝土质量影响的显著度和指标在工程应用中的接受度,选取了砂浆附着率、表观密度、吸水率、堆积密度和压碎指标五项材料特性作为评估核心指标.基于模糊分析原理,以这五项材料特性为主要指标,建立起指标的岭型隶属函数;基于层次分析原理,建立指标权重;再根据综合评价隶属向量进行模糊分级.最后用案例验证该方法的可行性和合理性.
Abstract
Quality of recycled aggregates has a decisive impact on performance of recycled concrete,and proper clas-sification plays a significant role for recycling aggregates effectively.The classification and grading of aggregates exhib-its fuzziness typically.It is advisable to select key material properties as the basis,and to apply fuzzy analytic hierarchy process(AHP)to establish a comprehensive methodology for quality grading.Based on material-test indicators'impact on the quality of recycled aggregate concrete and acceptance of the indicators in engineering,five material indicators were selected:mortar adhesion ratio,density,water absorption,bulk density,and crushing value,as the core evaluation indicators.Based on principles of fuzzy analysis,ridge-type membership functions were established for the five material properties as main indicators.With principles of AHP,weights of the indicators were established;and then a fuzzy grading frame was conducted based on the comprehensive evaluation membership vector.Finally,the feasibility and ra-tionality of this method were verified with case studies.
关键词
AHP/模糊数学/再生粗骨料/综合评价Key words
AHP/fuzzy mathmatics/recycled aggregates/comprehensive evaluation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据