膨胀土判别与分类的模糊概率模型及应用
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摘要
以模糊概率理论为基础,选取反映膨胀土基本特性的标准吸湿含水率、塑性指数、自由膨胀率、液限及小于0.002 mm胶粒含量为主要判别指标,建立了膨胀土胀缩等级分类的模糊概率模型。结合合肥—六安—叶集高速公路工程,利用模糊概率模型对其典型膨胀土进行了分类验证分析,其结果与实际膨胀潜势相当吻合。同时,对广西依托工程和全国其他地区的典型膨胀土进行了分析。结果表明,模糊概率模型具有很高的可靠性和广泛的适用性,在膨胀土判别与分类中有较好的应用前景。
Based on the fuzzy probability theory,a new classification model of expansive soil was proposed.Some basic physical indices of expansion soil,such as standard absorption moisture,plasticity index,free swelling ratio,liquid limit and the content of colloidal particle less than 0.002 mm,were chosen as the main evaluating factors in the model.The classification of representative samples of expansive soil in Hefei-Lu'an-Yeji Expressway project was verified using this model.The analytical result agrees well with the practical records.Furthermore,the classification of samples of expansive soil in Guangxi Province and samples of expansive soil in Chinese other regions were also carried out by the proposed method.The results indicate that the fuzzy probability model of identification and classification of expansive soil performs excellently with high reliability and wide applicability and has good prospect in practical engineering.
Based on the fuzzy probability theory,a new classification model of expansive soil was proposed.Some basic physical indices of expansion soil,such as standard absorption moisture,plasticity index,free swelling ratio,liquid limit and the content of colloidal particle less than 0.002 mm,were chosen as the main evaluating factors in the model.The classification of representative samples of expansive soil in Hefei-Lu'an-Yeji Expressway project was verified using this model.The analytical result agrees well with the practical records.Furthermore,the classification of samples of expansive soil in Guangxi Province and samples of expansive soil in Chinese other regions were also carried out by the proposed method.The results indicate that the fuzzy probability model of identification and classification of expansive soil performs excellently with high reliability and wide applicability and has good prospect in practical engineering.
引文
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[2]刘特洪.工程建设中的膨胀土问题[M].北京:中国建筑工业出版社,1997.LIU Tehong.Problems of Expansive Soils in Engineering Con-struction[M].Beijing:China Architecture and BuildingPress,1997.
[3]谭罗荣,张梅英,邵梧敏,等.风干含水量W65用作膨胀土判别分类指标的可行性研究[J].工程地质学报,1994,2(1):15-26.TAN Luorong,ZHANG Meiying,SHAO Wumin,et al.ThePracticability Research on Use of Air-dry Moisture Content W65as Identification Index of the Swelling Soil[J].Journal of En-gineering Geology,1994,2(1):15-26.
[4]中华人民共和国国家计划委员会.GBJ112-87膨胀土地区建筑技术规范[S].北京:中国计划出版社,1987.National Development and Reform Commission.GBJ112-87Specifications for Building Technology in the Expansive SoilArea[S].Beijing:China Planning Press,1987.
[5]中华人民共和国铁道部.TB1007-2001铁路工程岩土分类标准[S].北京:中国铁道出版社,2002.P.R.China.Ministry of Railways.TB1007-2001 Classifica-tion Criterion for Rock and Soil of Railway Engineering[S].Beijing:China Railway Publishing House,2002.
[6]姚海林,程平,杨洋,等.标准吸湿含水率对膨胀土进行分类的理论与实践[J].中国科学:E辑,2005,35(1):43-52.YAO Hailin,CHENG Ping,YANG Yang,et al.Theory andPractice of Classification of Expansive Soils by Water Content ofStandard Absorption[J].Science in China:Series E,2005,35(1):43-52.
[7]中华人民共和国交通部.JTG D30-2004公路路基设计规范[S].北京:人民交通出版社,2004.P.R.China.Ministry of Communications.JTG D30-2004Specifications for Design of Highway Subgrades[S].Beijing:China Communications Press,2004.
[8]段海澎,陈善雄,余飞,等.新公路膨胀土判别与分类方法对皖中膨胀土的适用性研究[J].岩石力学与工程学报,2006,25(10):2121-2127.DUAN Haipeng,CHEN Shanxiong,YU Fei,et al.Applica-bility of Recommended Classification in Specification Method forExpansive Soils in the Middle Area of Anhui Province[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(10):2121-2127.
[9]余颂,陈善雄,余飞,等.膨胀土判别与分类的Fisher判别分析方法[J].岩土力学,2007,28(3):499-504.YU Song,CHEN Shanxiong,YU Fei,et al.Fisher’s Dis-criminant Analysis Method for Identification and Classificationof Expansive Soil[J].Rock and Soil Mechanics,2007,28(3):499-504.
[10]汪培庄.模糊集合论及其应用[M].上海:上海科学技术出版社,1983.WANG Peizhuang.Fuzzy Sets and Its Applications[M].Shang-hai:Shanghai Scientific and Technical Publishers,1983.
[11]刘章军,叶燎原,彭刚.砂土地震液化的模糊概率评判方法[J].岩土力学,2008,29(4):876-880.LIU Zhangjun,YE Liaoyuan,PENG Gang.Fuzzy ProbabilityComprehensive Evaluation Method for Sand Liquefaction duringEarthquake[J].Rock and Soil Mechanics,2008,29(4):876-880.
[12]文畅平.膨胀土判别的属性测度模型[J].公路交通科技,2008,25(5):34-39.WEN Changping.Attribute Measurement Model for ExpansiveSoil Judgment[J].Journal of Highway and Transportation Re-search and Development,2008,25(5):34-39.
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