黄土地区高边坡稳定性模糊识别法理论与应用
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摘要
边坡稳定是土木工程中十分重要的问题,而黄土地区的边坡稳定问题则具有更加明显的地域特点。结合黄土地区的实际工程问题和土质特点,采用多级模糊模式识别方法进行黄土边坡稳定性的分析,充分考虑多种因素的影响,并针对湿陷性黄土边坡稳定分析中影响因素众多、而且具有不确定性的特点,建立相应的判别准则,计算中对于不同的影响因素赋予不同的权重系数,编制了实用的计算程序,应用于实际工程,取得良好的经济效益。此外,采用常规的极限平衡法进行对比计算,计算结果表明采用多级模糊模式分析性黄土地区高边坡稳定性是合理的。理论分析与实践表明,该方法能较全面考虑黄土地区边坡多参数的影响,使分析结果更加可靠,计算速度更加快捷,可用于黄土地区的高边坡工程。
Slope stability is a very important problem in civil engineering,especially for the loess slope because of its specific region characteristics.A new analysis method for slope stability is proposed using multilevel fuzzy pattern recognition to analyze loess slope stability.By considering adequately the characteristics of various influencing factors and uncertain properties in the analysis of the loess slope stability,many influence factors are taken into account.Based on the proposed method,a computer software is developed.For the convenience of data input,transfer,output and handling via graphical window interfaces,the object-oriented programming language is used.The proposed method is compared with the limit equilibrium method through an engineering case.The results illustrate that the method is more credible and the computing velocity is more rapid,and also indicate that the method of the multilevel fuzzy pattern recognition is suitable for the analysis of stability in loess slope.
Slope stability is a very important problem in civil engineering,especially for the loess slope because of its specific region characteristics.A new analysis method for slope stability is proposed using multilevel fuzzy pattern recognition to analyze loess slope stability.By considering adequately the characteristics of various influencing factors and uncertain properties in the analysis of the loess slope stability,many influence factors are taken into account.Based on the proposed method,a computer software is developed.For the convenience of data input,transfer,output and handling via graphical window interfaces,the object-oriented programming language is used.The proposed method is compared with the limit equilibrium method through an engineering case.The results illustrate that the method is more credible and the computing velocity is more rapid,and also indicate that the method of the multilevel fuzzy pattern recognition is suitable for the analysis of stability in loess slope.
引文
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[15]朱彦鹏,王秀丽,张贵文,等.兰州中广大厦超长深基坑支护的设计、施工与试验监测[J].工程力学,2003,20(增):336-341.(Zhu Yanpeng,Wang Xiuli,Zhang Guiwen,et al.Design,construction and experimental monitoring of lengthy deep foundation in Zhongguang highrise building of Lanzhou[J].Engineering Mechanics,2003,20(Supp.):336-341.(in Chinese))
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[2]李靖,周欣华,党进谦.黄土边坡稳定性图解法[J].岩土工程学报,1998,20(4):40-43.(Li Jing,Zhou Xinhua,Dang Jinqian.Graphic method for the stability of loess slopes[J].Chinese Journal of Geotechnical Engineering,1998,20(4):40-43.(in Chinese))
[3]王元汉,刘端伶.边坡稳定性的fuzzy综合评判法[J].华中理工大学学报,1998,26(增1):96-98.(Wang Yuanhan,Liu Duanling.Comprehensive fuzzy evaluation method for the stability of slope[J].Journal of Huazhong University of Science and Technology,1998,26(Supp.):96-98.(in Chinese))
[4]刘伟庆,徐敬海,邓民宪.震害影响因子的多级模糊综合评判研究[J].地震工程与工程振动,2003,23(2):123-127.(Liu Weiqing,Xu Jinghai,Deng Minxian.Multi-level fuzzy comprehensive evaluation research on seismic disaster influence factor[J].Earthquake Engineering and Engineering Vibration,2003,23(2):123-127.(in Chinese))
[5]廖瑛,夏海力.层次分析、模糊综合评判法在深基坑支护方案优选中的应用[J].工业建筑,2004,34(9):26-35.(Liao Ying,Xia Haili.Application of AHP method and fuzzy complex evaluation method to optimizing analysis of bracing system for deep excavation[J].Industrial Construction,2004,34(9):26-35.(in Chinese))
[6]赵明华,程晔,曹文贵.桥梁基桩桩端溶洞顶板稳定性的模糊分析研究[J].岩石力学与工程学报,2005,24(8):1 376-1 383.(Zhao Minghua,Cheng Ye,Cao Wengui.Fuzzy method for the stability analysis of cave roof under pile tip in karst region[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(8):1 376-1 383.(in Chinese))
[7]李喜安,彭建兵.用改进后的BP神经网络评价黄土质边坡稳定性[J].地质灾害与环境保护,2002,13(4):56-59.(Li Xi′an,Peng Jianbing.Estimation of loess slope stability with improved BP natural network[J].Journal of Geological Hazards and Environment Preservation,2002,13(4):56-59.(in Chinese))
[8]陈守煜.工程模糊集理论与应用[M].北京:国防工业出版社,1998.(Cheng Shouyu.Engineering Fuzzy Set Theory and Application[M].Beijing:National Defense Industry Press,1998.(in Chinese))
[9]王永焱,林在贵.中国黄土的结构特征及物理力学性质[M].北京:科学出版社,1990.105-171.(Wang Yongyan,Lin Zaigui.China Structural Characteristics of Loess and Physical-mechanical Property[M].Beijing:Science Press,1990.105-171.(in Chinese))
[10]孙广忠.西北黄土的工程地质力学特性及地质工程问题研究[M].兰州:兰州大学出版社,1989.(Sun Guangzhong.Research of Engineering Geological Mechanical Property and Geological Engineering Problem on Northwest Loess[M].Lanzhou:Lanzhou University Press,1989.(in Chinese))
[11]文宝萍,李媛,王兴林.黄土地区典型滑坡预测预报及减灾对策研究[M].北京:地质出版社,1997.(Wen Baoping,Li Yuan,Wang Xinglin.Research on Prediction and Reducing Countermeasure of Disaster for Typical Landslide on Loess Region[M].Beijing:Geological Publishing House,1997.(in Chinese))
[12]朱彦鹏,王秀丽,于劲,等.悬臂式支护桩内力的试验研究[J].岩土工程学报,1999,21(2):236-239.(Zhu Yanpeng,Wang Xiuli,Yu Jin,et al.Experimental investigation for the internal force of cantilever supporting piles in excavation[J].Chinese Journal of Geotechnical Engineering,1999,21(2):236-239.(in Chinese))
[13]《地基处理手册》编写委员会.地基处理手册(第二版)[M].北京:中国建筑工业出版社,2000.(Compile Committee of Manual for Foundation Treatment.Manual for Foundation Treatment(Second Edition)[M].Beijing:China Architecture and Building Press,2000.(in Chinese))
[14]中华人民共和国国家标准编写组.建筑边坡工程技术规范(GB50330-2002)[S].北京:中国建筑工业出版社,2002.(The National Standards Compilation Group of People′s Republic of China.Technical Code for Building Slope Engineering(GB50330-2002)[S].Beijing:China Architecture and Building Press,2002.(in Chinese))
[15]朱彦鹏,王秀丽,张贵文,等.兰州中广大厦超长深基坑支护的设计、施工与试验监测[J].工程力学,2003,20(增):336-341.(Zhu Yanpeng,Wang Xiuli,Zhang Guiwen,et al.Design,construction and experimental monitoring of lengthy deep foundation in Zhongguang highrise building of Lanzhou[J].Engineering Mechanics,2003,20(Supp.):336-341.(in Chinese))
[16]Zhu Y P,Wang X L.Anti-slide design of foundations for buildings on loess slope[A].In:Advances in Mechanics of Structures and Materials[C].Golden Coast:[s.n.],2002.50-55.
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