小半径曲线盾构隧道双铰盾构设备改造研究
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摘要
随着城市地下空间开发建设日益发达,地下建筑结构越来越密集,导致曲线盾构隧道的弯曲半径越来越小,既有的盾构设备无法满足施工要求,需要对其进行改造。文章综合考虑既有盾构机设备的结构构造特点和曲线盾构隧道的轴线控制要求,推导出小半径曲线隧道施工条件下双铰型盾构机转弯半径的计算公式,分析了盾构机尺寸、铰接形式、铰接角度和盾尾间隙等参数对曲线隧道弯曲半径的影响规律。研究表明,盾尾长度越短,盾尾间隙越大,铰接角度越大,盾构机可完成的转弯半径就越小。双铰盾构机后铰的铰接角度对转弯半径的影响比前铰大。文章提出了海瑞克AVND3080盾构机满足25D转弯半径要求的设备改造建议,为类似曲线盾构隧道施工提供了借鉴和指导。
With the development of urban underground space,the underground works are becoming more and more dense. As a result,the radius of shield tunneling is getting smaller and smaller. The existing shield machine can't meet the construction requirements, so the renovation is needed. In this paper, the structure characteristics of the existing shield machine and the axis control requirements of the curved shield tunnel are considered synthetically.Then the calculation formula of the minimum turning radius for the double-hinge shield machine is deduced,and the influence of parameters such as dimensions, the articulation form, the articulation angle and the shield tail gap on the radius of the curved tunnel is analyzed. According to the calculated data,the shorter the length of the shield tail,the larger the shield tail gap and the larger the value of articulation angle, the smaller the turning radius of the shield machine. Specially, for the double-hinge shield machine, the articulation angle of the back hinge makes greater influence on the turning radius than the front hinge. Based on calculation results, the suggestions about Herrenknecht AVND3080 shield machine renovation are given to meet the requirement of 25 D turning radius, which provides reference and guidance for similar curved shield tunnel projects.
With the development of urban underground space,the underground works are becoming more and more dense. As a result,the radius of shield tunneling is getting smaller and smaller. The existing shield machine can't meet the construction requirements, so the renovation is needed. In this paper, the structure characteristics of the existing shield machine and the axis control requirements of the curved shield tunnel are considered synthetically.Then the calculation formula of the minimum turning radius for the double-hinge shield machine is deduced,and the influence of parameters such as dimensions, the articulation form, the articulation angle and the shield tail gap on the radius of the curved tunnel is analyzed. According to the calculated data,the shorter the length of the shield tail,the larger the shield tail gap and the larger the value of articulation angle, the smaller the turning radius of the shield machine. Specially, for the double-hinge shield machine, the articulation angle of the back hinge makes greater influence on the turning radius than the front hinge. Based on calculation results, the suggestions about Herrenknecht AVND3080 shield machine renovation are given to meet the requirement of 25 D turning radius, which provides reference and guidance for similar curved shield tunnel projects.
引文
[1]徐辉.铰接式盾构机的铰接与仿形刀应用[J].地下工程与隧道,2003,(2):41-44.XU Hui. Application of Articulation and Copying Tool in Articulated Shield[J]. Underground Engineering and Tunnels, 2003,(2):41-44.
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[3]张颖,李铭军,何肖健.小半径曲线盾构隧道设计及施工新技术[J].都市快轨交通,2010,23(5):75-79.ZHANG Ying,LI Mingjun,HE Xiaojian. New Technology for the Design and Construction of Shield Tunnels on Sharp Curves[J].Urban Rail Transit,2010,23(5):75-79.
[4]张涛,徐鹏程.盾构机主动铰接与被动铰接的比较[A].中国盾构技术学术研讨会论文集[C].北京,2011.ZHANG Tao. XU Pengcheng. Comparison of Active with Passive Hinged Joint of Shield Machine[A]. China Shield Engineering Technology Academic Symposium[C]. Beijing,2011.
[5]郝润霞.软土地区曲线段盾构隧道超挖量与注浆量分析[J].地下空间与工程学报,2013,9(5):1132-1136.HAO Runxia. Analysis of Over-excavated Volume and Synchronous Grouting Volume for the Shield Tunnel at Curved Section in Soft Soil Area[J]. Chinese journal of Underground Space and Engineering,2013,9(5):1132-1136.
[6]胡琏,陈昆鹏,高文梁.盾构主动铰接与双铰接形式的对比与分析[J].建筑机械,2016,(10):70-71.HU Lian,CHEN Kunpeng,GAO Wenliang. The Contrastive Analysis of Active and Double Articulation Forms for Shields[J].Construction Machinery,2016,(10):70-71.
[7]陈剑,李智明.急曲线隧道盾构超挖量及铰接角的理论算法[J].中国公路学报,2017,30(8):66-73.CHEN Jian,LI Zhiming. Theoretical Algorithm for Over-excavated Volume and Articulation Angle during Shield Tunneling along Sharp Curves[J]. China Journal of Highway and Transport,2017,30(8):66-73.
[8]杨圆,王春松.主动铰接盾构在连续小半径曲线中风化泥岩的掘进控制技术[J].隧道建设,2017,37(S1):189-193.YANG Yuan, WANG Chunsong. Driving Control Technology for Active Articulated Shield Machine in Moderately Weathered Mudstone in Continuous Small Radius Curve[J]. Tunnel Construction,2017,37(S1):189-193.
[2]徐俊.盾构法施工最小曲线半径取值的研究[D].北京:北京交通大学,2008.XU Jun. Study on the Minimum Value of Curve Radius in Shield Construction[D]. Beijing:Beijing Jiaotong University,2008.
[3]张颖,李铭军,何肖健.小半径曲线盾构隧道设计及施工新技术[J].都市快轨交通,2010,23(5):75-79.ZHANG Ying,LI Mingjun,HE Xiaojian. New Technology for the Design and Construction of Shield Tunnels on Sharp Curves[J].Urban Rail Transit,2010,23(5):75-79.
[4]张涛,徐鹏程.盾构机主动铰接与被动铰接的比较[A].中国盾构技术学术研讨会论文集[C].北京,2011.ZHANG Tao. XU Pengcheng. Comparison of Active with Passive Hinged Joint of Shield Machine[A]. China Shield Engineering Technology Academic Symposium[C]. Beijing,2011.
[5]郝润霞.软土地区曲线段盾构隧道超挖量与注浆量分析[J].地下空间与工程学报,2013,9(5):1132-1136.HAO Runxia. Analysis of Over-excavated Volume and Synchronous Grouting Volume for the Shield Tunnel at Curved Section in Soft Soil Area[J]. Chinese journal of Underground Space and Engineering,2013,9(5):1132-1136.
[6]胡琏,陈昆鹏,高文梁.盾构主动铰接与双铰接形式的对比与分析[J].建筑机械,2016,(10):70-71.HU Lian,CHEN Kunpeng,GAO Wenliang. The Contrastive Analysis of Active and Double Articulation Forms for Shields[J].Construction Machinery,2016,(10):70-71.
[7]陈剑,李智明.急曲线隧道盾构超挖量及铰接角的理论算法[J].中国公路学报,2017,30(8):66-73.CHEN Jian,LI Zhiming. Theoretical Algorithm for Over-excavated Volume and Articulation Angle during Shield Tunneling along Sharp Curves[J]. China Journal of Highway and Transport,2017,30(8):66-73.
[8]杨圆,王春松.主动铰接盾构在连续小半径曲线中风化泥岩的掘进控制技术[J].隧道建设,2017,37(S1):189-193.YANG Yuan, WANG Chunsong. Driving Control Technology for Active Articulated Shield Machine in Moderately Weathered Mudstone in Continuous Small Radius Curve[J]. Tunnel Construction,2017,37(S1):189-193.