【摘要】：城市固體廢棄物(MSW)是由多種無機(jī)和有機(jī)成分組成的復(fù)合材料,具有高壓縮性和可降解性。隨著時間的變化,基本的物理力學(xué)特性發(fā)生變化,與傳統(tǒng)土體相比,性質(zhì)差異較大。城市固體廢棄物的本構(gòu)模型對于垃圾填埋場中土工問題的研究極其重要,考慮不同因素的影響,系統(tǒng)總結(jié)了國內(nèi)外一些學(xué)者對MSW本構(gòu)模型的研究現(xiàn)狀,指出已有的研究成果主要考慮了荷載引起的瞬時變形、機(jī)械蠕變、生物降解、纖維物質(zhì)的加筋作用等,但這些都是考慮單個因素或者將幾個因素簡單疊加的本構(gòu)模型,并未考慮不同因素的耦合作用。結(jié)合土體本構(gòu)模型的發(fā)展特點(diǎn),指出了今后城市固體廢棄物本構(gòu)模型的研究方向和發(fā)展趨勢:應(yīng)當(dāng)綜合考慮各種因素對MSW應(yīng)力-應(yīng)變關(guān)系的影響,從工程實踐出發(fā),通過巖土工程、環(huán)境工程、化學(xué)工程和生物工程等學(xué)科的交叉尋求突破,形成考慮生化反應(yīng)-骨架變形-水氣運(yùn)移-溶質(zhì)遷移耦合作用的理論框架。
[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.
【作者單位】： 同濟(jì)大學(xué)地下建筑與工程系;同濟(jì)大學(xué)巖土及地下工程教育部重點(diǎn)實驗室;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計劃(973計劃)課題(No.2012CB719803) 國家自然科學(xué)基金項目(No.41072201,No.41172245,No.41222021) 教育部“新世紀(jì)優(yōu)秀人才支持計劃”資助項目(No.NCET-13-0421)
【分類號】：TU43;X705

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