冻融循环作用下垃圾填埋场土体力学性质改变的现状研究
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摘要
针对垃圾填埋场中土体冻融循环后力学性质的改变以及所产生的土体不均匀沉降问题,通过对大量国内外文献的阅读,分析了垃圾填埋场土体冻融循环后力学性质改变的机理,同时就目前国内外对土体冻融循环研究存在的问题,利用试验和数值模拟相结合的研究方法,为实际工程提供科学的理论依据。如在垃圾填埋场封场时,利用大型机械对表层土体压实来减少垃圾填埋场的不均匀沉降。
In view of the mechanical property changes in landfill soil in freeze-thaw cycles and the uneven settlement of the soil, after reading a large number of domestic and oversea documents, we analyzed the mechanism of mechanical property changes in landfill soil in freeze-thaw cycles. At the same time, after studying the problem of "freeze-thaw cycles", we combined the research methods by using experiments and numerical simulation to provide a scientific theoretical basis for the practical engineering. For example, when the landfill is closed, the surface soil is compacted with large machinery to reduce the uneven settlement of landfill.
In view of the mechanical property changes in landfill soil in freeze-thaw cycles and the uneven settlement of the soil, after reading a large number of domestic and oversea documents, we analyzed the mechanism of mechanical property changes in landfill soil in freeze-thaw cycles. At the same time, after studying the problem of "freeze-thaw cycles", we combined the research methods by using experiments and numerical simulation to provide a scientific theoretical basis for the practical engineering. For example, when the landfill is closed, the surface soil is compacted with large machinery to reduce the uneven settlement of landfill.
引文
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[26]钟敏辉,王少斌.季节性冻土路基冻胀性分析及治理措施[J].铁道建筑,2009(4):96-98.
[27]张媛,董建华,董旭光,等.季节性冻土区土钉边坡支护结构冻融反应分析[J].岩土力学,2017,38(2):582-592.
[28]宋珲,朱明,袁文忠.季节性冻土地区路基的冻胀与融沉[J].路基工程,2007,130(1):26-28.
[29]王平,郭伟杰,李洪峰,等.冻融循环对软土物理力学性质的影响分析[J].长江科学院院报,2018,35(7):79-83.
[30]徐湘田,赖远明,刘峰,等.冻土中几类力学试验方法的探讨[J].冰川冻土,2011,33(5):1134-1138.
[2]程培峰,王锐,韩春鹏.大兴安岭人工冻土抗压抗剪强度试验研究[J].中外公路,2016,36(5):7-8.
[3]王培清,王保田,张灿虹,等.藏东南地区季节性冻土实验研究[J].公路工程,2017,42(4):128-132.
[4]常丹,刘建坤,李旭,等.冻融循环对青藏粉砂土力学性质影响的试验研究[J].岩石力学与工程学报,2014,33(7):1496-1502.
[5]Alkire B D,Morrison J M.Change in soil structure due to freeze-thaw and repeated loading[J].Transportation Research Record,1983,918:15-21.
[6]Van Klaveren R W,Mccool D K.Hydraulic erosion resistance of thawing soil[J/OL].American Society of Agricultural Engineers,1987.http://xueshu.baidu.com/usercenter/paper/show?paperid=eb91472cd3aef21d273f3e0cb74eb7a2&site=xueshu_se&hitarticle=1.
[7]Swan Christopher,Greene Christopher.Freeze-thaw effects on Boston Blue clay[J].Journal of Engineering and Applied Science,Soil Improvement for Big Digs,1998,81:161-176.
[8]倪万魁,师华强.冻融循环作用对黄土微结构和强度的影响[J].冰川冻土,2014,36(4):922-927.
[9]肖东辉,冯文杰,张泽,等.冻融循环对兰州黄土渗透性变化的影响[J].冰川冻土,2014,36(5):1192-1198.
[10]张泽,马巍,齐吉琳.冻融循环作用下土体结构演化规律及其工程性质改变机理[J].吉林大学学报,2013:43(6):1904-1914.
[11]郑郧,马巍,邴慧.冻融循环对土结构性影响的机理与定量研究方法[J].冰川冻土,2015,37(1):132-137.
[12]郑郧,马巍,邴慧.冻融循环对土结构性影响的试验研究及影响机制分析[J].岩土力学,2015,36(5):1282-1294.
[13]王伟,池旭超,张芳,等.冻融循环对滨海软土三轴应力应变曲线软化特性的影响[J].岩土工程学报,2013,35(S2):140-144.
[14]严晗,刘建坤,王天亮.冻融对粉砂土力学性能影响的试验研究[J].北京交通大学学报,2013,37(4):73-77.
[15]胡田飞,刘建坤,房建宏,等.冻融循环下含水率对粉质黏土力学性质影响试验[J].哈尔滨工业大学学报,2017,49(12):123-130.
[16]Graham J,Au V C S.Effects of freeze-thaw and softening on a natural clay at low stresses[J].Canadian Geotechnical Journal,1985,22(1):69-78.
[17]朱元林,张家彭.冻土的弹性变形及压缩变形[J].冰川冻土,1982,4(3):30-39.
[18]刘寒冰,张互助,王静.冻融及湿度对压实黏质土力学性质的影响[J].岩土力学,2017,39(1):1-7.
[19]王大雁,马巍,常小晓,等.冻融循环作用对青藏粘土物理力学性质的影响[J].岩石力学与工程学报,2005,24(23):4313-4319.
[20]Simonsen E,Janoo V C,Isacsson U.Resilient properties of unbound road materials during seasonal frost conditions[J].Journal of Cold Regions Engineering,2002,16(1):28-50.
[21]Fredlund D G,Bergan A T,Sauer E K.Deformation characterization of subgrade soils for highways in northern environments[J].Journal of Canadian Geotechnical,1975,12(2):213-223.
[22]Berg L,Bigl S R,Stark J A,et al.Resilient modulus testing of materials from Mn/Raod[J/OL].USA Cold Regions Research and Engineering Laboratory,1996:6-19.http://xueshu.baidu.com/usercenter/paper/show?paperid=48acf154e111c5d615d287a725aaf4cf&site=xues hu_se&hitarticle=1.
[23]Johnson T C,Cole D M,Chamberlain E J.Influence of freezing and thawing on the resilient properties of a silt beneath an asphalt concrete pavement[R].USA Cold Regions Research and Engineering Laboratory Report,Hanover,N H,1978.
[24]Johnson T C,Cole D M,Chamberlain E J.Effect of freeze-thaw cycles on resilient properties of fine-grained soils[J].Engineering Geology,1979,13(1-4):247-276.
[25]Lee W,Bohra N C,Altschaeffl A G,et al.Resilient modulus of cohesive soil and the effect of freeze-thaw[J].Canadian Geotechnical Journal,1995,32(4):559-568.
[26]钟敏辉,王少斌.季节性冻土路基冻胀性分析及治理措施[J].铁道建筑,2009(4):96-98.
[27]张媛,董建华,董旭光,等.季节性冻土区土钉边坡支护结构冻融反应分析[J].岩土力学,2017,38(2):582-592.
[28]宋珲,朱明,袁文忠.季节性冻土地区路基的冻胀与融沉[J].路基工程,2007,130(1):26-28.
[29]王平,郭伟杰,李洪峰,等.冻融循环对软土物理力学性质的影响分析[J].长江科学院院报,2018,35(7):79-83.
[30]徐湘田,赖远明,刘峰,等.冻土中几类力学试验方法的探讨[J].冰川冻土,2011,33(5):1134-1138.