北京地铁工程深基坑围护结构变形研究
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摘要
在深基坑开挖时,由于地层参数的不确定性和复杂性以及建立地层本构模型时的种种简化,土层与各种支护结构的实际变形特征与设计阶段的理论变形特征往往有较大差距。鉴于此,把FLAC3D三维数值模拟程序和北京市地铁奥运支线深基坑工程中不断补充的现场实际监测数据结合起来,通过不断修正所建模型,使预测模型更符合后续开挖时的实际情况,使预测结果更趋近于实际监测结果,显示了该方法进行深基坑变形预测的有效性。
Due to the uncertainty and Complexity of the stratum parameters and the simplification of mechanical model,the actual deformation of the soil and the supporting structures obviously differs from the theoaretical deformation.So this article brings forward a new method to simulate the project ever and again.The dissertation is carried out against a background of a practical project in Beijing which is simulated with the aid of the large-scale software-FLAC3D combined with actual measured data.Its results indicate that the proposed model is effective for predicting the deformation of supporting structures for deep excavations.
Due to the uncertainty and Complexity of the stratum parameters and the simplification of mechanical model,the actual deformation of the soil and the supporting structures obviously differs from the theoaretical deformation.So this article brings forward a new method to simulate the project ever and again.The dissertation is carried out against a background of a practical project in Beijing which is simulated with the aid of the large-scale software-FLAC3D combined with actual measured data.Its results indicate that the proposed model is effective for predicting the deformation of supporting structures for deep excavations.
引文
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[4]刘波,韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社,2003.(LIU Bo,HAN Yan-hui.Application manual of theory and Instance of FLAC.Bei-jing:China Communications Press,2003.(in Chinese))
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[10]秦四清.深基坑工程优化设计[M].北京:地震出版社,1998.(QING Si-qing.Optimum-Design of DeepExcavation[M].Beijing:Earthquake Press,1998.(inChinese))
[11]边占利.深基坑工程监测和控制[J],岩土工程界,2001,4(7):45-46.(BIAN Zhan-li.Monitoring andControl of Deep Excavations[J].Geotechnical Engi-neering World,2001.4(7):45-46.(in Chinese))
[12]徐干成,等.地下工程支护结构[M].北京:中国水利水电出版社,2002.(XU Gan-chen,et al.Under-ground Engineering supporting structure[M].ChinaWaterPower Press,2002.(in Chinese))
[13]JGJ12C-99,建筑基坑支护技术规程[S].(JGJ12C-99,Technical Specification for Retaining and Protectionof Build Foundation.(in Chinese)
[2]刘苹,刘前曦.考虑施工工况的深基坑计算方法及实例分析[J].结构工程师,2003,2:41-45.(LIU Ping,LIU Qian-xi.Computation method and case analysis ofdeep excavation considering construction steps[J].Structural Engineers,2003,14(2):41-45.(in Chi-nese))
[3]刘2,李维滨,梁培新.深基坑工程信息化施工中的监测技术应用[J].建筑技术开发,2005,32(11):114-115,144.(LIU Rong,LI Wei-bin,LIANG Pei-xin.Monitoring in the communication construction of deepfoundation pit[J].Building Technique Development,2005,32(11):114-115,144.(in Chinese))
[4]刘波,韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社,2003.(LIU Bo,HAN Yan-hui.Application manual of theory and Instance of FLAC.Bei-jing:China Communications Press,2003.(in Chinese))
[5]施仲衡,张弥,等.地下铁道设计与施工[M].西安:陕西科学技术出版社,1997.(SHI Zhong-heng,ZHANG Mi,et al.Collected Works in ContemporaryCivil Engineering and Architectural Science and Tech-nology[M].Xian:Shanxi Province Science and Tech-nology Press,1997.(in Chinese))
[6]关宝树.隧道施工力学基本概论[M].成都:西南交通大学出版社,1993.(GUAN Bao-shu.Introduction ofConstruction Mechanical Behavior of Tunnel[M].Chengdu:Southwest Jiaotong University Press,1993.(inChinese))
[7]赵志给,应惠清.简明深基坑工程设计施工手册[M],北京:中国建筑工业出版社,2001.(ZHAO Zhi-ji,YING Hui-qing.Manual of Design and Construction ofDeep Pit[M].Beijing:China Architeeture and BuildingPress,2001.(in Chinese))
[8]曾宪明,基坑与边坡事故警示录[M],北京:中国建筑工业出版社,1999.(ZENG Xian-ming.Instance offoundation pit and slop[M].Beijing:China Archilectureand Building Press,1999.(in Chinese))
[9]范益群.时空效应理论与软土基坑工程现代设计概念[J].清华大学学报(自然科学版),2000,40(S1):49-53.(FAN Yi-qun.Contemporary design of time-spacedependent effect theory and Mollisol excavation engineer-ing[J].Journal of Tsinghua University(Science andTechnology),2000,40(S1):49-53.(in Chinese))
[10]秦四清.深基坑工程优化设计[M].北京:地震出版社,1998.(QING Si-qing.Optimum-Design of DeepExcavation[M].Beijing:Earthquake Press,1998.(inChinese))
[11]边占利.深基坑工程监测和控制[J],岩土工程界,2001,4(7):45-46.(BIAN Zhan-li.Monitoring andControl of Deep Excavations[J].Geotechnical Engi-neering World,2001.4(7):45-46.(in Chinese))
[12]徐干成,等.地下工程支护结构[M].北京:中国水利水电出版社,2002.(XU Gan-chen,et al.Under-ground Engineering supporting structure[M].ChinaWaterPower Press,2002.(in Chinese))
[13]JGJ12C-99,建筑基坑支护技术规程[S].(JGJ12C-99,Technical Specification for Retaining and Protectionof Build Foundation.(in Chinese)
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