热力盾构隧道的结构研究与设计技术
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摘要
热力隧道在运行过程中,具有环境温度高的特点,热力特有的固定、导向支架以及滑动支墩等产生的内荷载大,盾构技术在热力领域的应用存在诸多难点。本文在综合考虑热力工程的特殊使用条件的基础上,借鉴地铁、电力等其他盾构市政工程设计理论,结合热力暗挖隧道结构设计的相关经验,首先采用经验公式与有限元理论对盾构衬砌进行设计计算;然后,有针对性地采取了一系列构造措施,并提炼出一套适用于热力盾构隧道的结构设计方法;最后,对国内首条建成的热力盾构隧道工程的现场原位监测和测试结果进行了分析,很好地验证了该套设计方法的可靠性,可为今后盾构技术在热力工程中的应用提供一定的参考。
During the operation of the heating supply tunnels, it has the characteristics of high ambient temperature, large stresses at fixed, guided and roller support sections. Therefore, there are certain difficulties in the application of tunneling technology in thermal engineering field. In this paper, a study was performed based on the special conditions of thermal engineering, lessons learned from the design of subway and electric power tunnels, and relevant experience of structural design of heating supply tunnels. First, both empirical formula and finite element analysis were used to the design of tunnel lining. Then, a series of targeted construction measures were put forward and a set of structural design methods applicable to thermal engineering filed were refined. At the end, the calculated results based on this design method were compared with the in-situ test measurements of the first heating supply tunnel in China. The results match well which assured the reliability of this design method. This study provides some references for the application of tunnels in thermal engineering field.
During the operation of the heating supply tunnels, it has the characteristics of high ambient temperature, large stresses at fixed, guided and roller support sections. Therefore, there are certain difficulties in the application of tunneling technology in thermal engineering field. In this paper, a study was performed based on the special conditions of thermal engineering, lessons learned from the design of subway and electric power tunnels, and relevant experience of structural design of heating supply tunnels. First, both empirical formula and finite element analysis were used to the design of tunnel lining. Then, a series of targeted construction measures were put forward and a set of structural design methods applicable to thermal engineering filed were refined. At the end, the calculated results based on this design method were compared with the in-situ test measurements of the first heating supply tunnel in China. The results match well which assured the reliability of this design method. This study provides some references for the application of tunnels in thermal engineering field.
引文
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[4]黄钟晖,廖少明,侯学渊.错缝拼装衬砌纵向螺栓剪切模型的研究[J].岩石力学与工程学报,2004,23(6):952-958Huang Zhonghui,Liao Shaoming,Hou Xueyuan.Research on shear model of ring joint bolts in stagger-jointed segmental linings[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(6):952-958
[5]刘凤华.盾构隧道管片的内力计算和参数影响分析[J].都市快轨交通,2008,21(2):32-35Liu Fenghua.Calculation of internal forces and parameter analysis for shield tunnel segment lining[J].Urban Rapid Rail Transit,2008,21(2):32-35
[6]CJJ 105-2005城镇供热管网结构设计规范[S].北京:中国建筑工业出版社,2005CJJ 105-2005 Code for structural of heating pipelines in city and town[S].China Architecture&Building Press,2005
[7]程文瀼.混凝土结构上册混凝土结构设计原理[M].北京:中国建筑工业出版社,2012
[2]黄福其.地下工程热工计算方法[M].北京:中国建筑工业出版社,1981
[3]何英杰,周晓雁.盾构隧道衬砌连接螺栓变形的影响因素分析[J].长江科学院院报,2002,19(增1):57-60He Yingjie,Zhou Xiaoyan.Analysis on affecting factors of deformation of conjunction bolts in shield-tunneling[J].Journal of Yangtze River Scientific Research Institute,2002,19(S1):57-60
[4]黄钟晖,廖少明,侯学渊.错缝拼装衬砌纵向螺栓剪切模型的研究[J].岩石力学与工程学报,2004,23(6):952-958Huang Zhonghui,Liao Shaoming,Hou Xueyuan.Research on shear model of ring joint bolts in stagger-jointed segmental linings[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(6):952-958
[5]刘凤华.盾构隧道管片的内力计算和参数影响分析[J].都市快轨交通,2008,21(2):32-35Liu Fenghua.Calculation of internal forces and parameter analysis for shield tunnel segment lining[J].Urban Rapid Rail Transit,2008,21(2):32-35
[6]CJJ 105-2005城镇供热管网结构设计规范[S].北京:中国建筑工业出版社,2005CJJ 105-2005 Code for structural of heating pipelines in city and town[S].China Architecture&Building Press,2005
[7]程文瀼.混凝土结构上册混凝土结构设计原理[M].北京:中国建筑工业出版社,2012