城市固体废弃物本构模型的研究现状及展望
发布时间：2018-12-12 10:39
【摘要】：城市固体废弃物(MSW)是由多种无机和有机成分组成的复合材料,具有高压缩性和可降解性。随着时间的变化,基本的物理力学特性发生变化,与传统土体相比,性质差异较大。城市固体废弃物的本构模型对于垃圾填埋场中土工问题的研究极其重要,考虑不同因素的影响,系统总结了国内外一些学者对MSW本构模型的研究现状,指出已有的研究成果主要考虑了荷载引起的瞬时变形、机械蠕变、生物降解、纤维物质的加筋作用等,但这些都是考虑单个因素或者将几个因素简单叠加的本构模型,并未考虑不同因素的耦合作用。结合土体本构模型的发展特点,指出了今后城市固体废弃物本构模型的研究方向和发展趋势:应当综合考虑各种因素对MSW应力-应变关系的影响,从工程实践出发,通过岩土工程、环境工程、化学工程和生物工程等学科的交叉寻求突破,形成考虑生化反应-骨架变形-水气运移-溶质迁移耦合作用的理论框架。
[Abstract]:Urban solid waste (MSW) is a composite composed of many inorganic and organic components, which has high compressibility and degradability. With the change of time, the basic physical and mechanical properties change, compared with the traditional soil, there is a great difference in properties. The constitutive model of municipal solid waste (MSW) is very important for the study of geotechnical problems in landfills. Considering the influence of different factors, this paper systematically summarizes the research status of MSW constitutive model by some scholars at home and abroad. It is pointed out that the existing research results mainly consider the instantaneous deformation caused by load, mechanical creep, biodegradation and fiber reinforcement, but these are constitutive models that consider single factors or simply superposition several factors. The coupling of different factors is not considered. Combined with the development characteristics of soil constitutive model, this paper points out the research direction and development trend of urban solid waste constitutive model in the future: the influence of various factors on the stress-strain relationship of MSW should be considered synthetically, and the engineering practice should be taken into account. Through the breakthrough of geotechnical engineering, environmental engineering, chemical engineering and biological engineering, a theoretical framework considering the coupling of biochemical reaction, skeleton deformation, water and air migration and solute migration is formed.
【作者单位】： 同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;
【基金】：国家重点基础研究发展计划(973计划)课题(No.2012CB719803) 国家自然科学基金项目(No.41072201,No.41172245,No.41222021) 教育部“新世纪优秀人才支持计划”资助项目(No.NCET-13-0421)
【分类号】：TU43;X705
[Abstract]:Urban solid waste (MSW) is a composite composed of many inorganic and organic components, which has high compressibility and degradability. With the change of time, the basic physical and mechanical properties change, compared with the traditional soil, there is a great difference in properties. The constitutive model of municipal solid waste (MSW) is very important for the study of geotechnical problems in landfills. Considering the influence of different factors, this paper systematically summarizes the research status of MSW constitutive model by some scholars at home and abroad. It is pointed out that the existing research results mainly consider the instantaneous deformation caused by load, mechanical creep, biodegradation and fiber reinforcement, but these are constitutive models that consider single factors or simply superposition several factors. The coupling of different factors is not considered. Combined with the development characteristics of soil constitutive model, this paper points out the research direction and development trend of urban solid waste constitutive model in the future: the influence of various factors on the stress-strain relationship of MSW should be considered synthetically, and the engineering practice should be taken into account. Through the breakthrough of geotechnical engineering, environmental engineering, chemical engineering and biological engineering, a theoretical framework considering the coupling of biochemical reaction, skeleton deformation, water and air migration and solute migration is formed.
【作者单位】： 同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;
【基金】：国家重点基础研究发展计划(973计划)课题(No.2012CB719803) 国家自然科学基金项目(No.41072201,No.41172245,No.41222021) 教育部“新世纪优秀人才支持计划”资助项目(No.NCET-13-0421)
【分类号】：TU43;X705
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