基于可靠度理论的隧道洞门结构计算软件开发
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摘要
铁路隧道洞门结构按概率极限状态法设计时,需考虑墙身抗压、抗裂、抗倾覆、抗滑移及地基承载力5种极限状态。为评定洞门结构可靠性,需对不同极限状态下的可靠度指标或承载力极限状态进行计算。传统方法一般采用手算并结合MATTLAB、ANSYS、EXCEL等软件进行计算,其计算效率低,实用性不高。针对以上问题,文章基于Visual Basic平台,开发了基于极限状态法的隧道洞门结构计算软件。该程序实现了洞门结构5种极限状态的可靠度指标和承载力极限状态的快速计算功能,并提供了3种可靠度指标计算方法,包括JC法、分位值法与蒙特卡洛法,软件计算结果可写入Excel模板文件,大大提高了隧道洞门结构计算效率。通过与手算结果对比,验证了该软件计算结果的准确性。
The limit states of railway tunnel portal structure including compression, tensile, anti-overturning, anti-sliding and bearing capacity of foundation should be considered when portal structure is designed based on the prob-ability limit state method. In order to evaluate the reliability of portal structure, the reliability index and limit state ofbearing capacities of different limit states need to be calculated. The traditional methods generally use hand compu-tation combined with MATTLAB, ANSYS, EXCEL and other softwares, which has low computation efficiency andpoor practicality. In view of above problems, a calculating software for portal structure was developed based on theprobability limit state method and Visual Basic platform, which realizes the function of rapid calculation of reliabili-ty index and limit state of bearing capacities under five limit states of portal structure, offers three methods to calcu-late the reliability index including JC method, fractile method and Monte-Carlo method. Moreover, the calculationresults can be written in the EXCEL template file, greatly improving the efficiency of tunnel portal structure calcula-tion. The accuracy of the software is verified by comparing with the results of hand calculation.
The limit states of railway tunnel portal structure including compression, tensile, anti-overturning, anti-sliding and bearing capacity of foundation should be considered when portal structure is designed based on the prob-ability limit state method. In order to evaluate the reliability of portal structure, the reliability index and limit state ofbearing capacities of different limit states need to be calculated. The traditional methods generally use hand compu-tation combined with MATTLAB, ANSYS, EXCEL and other softwares, which has low computation efficiency andpoor practicality. In view of above problems, a calculating software for portal structure was developed based on theprobability limit state method and Visual Basic platform, which realizes the function of rapid calculation of reliabili-ty index and limit state of bearing capacities under five limit states of portal structure, offers three methods to calcu-late the reliability index including JC method, fractile method and Monte-Carlo method. Moreover, the calculationresults can be written in the EXCEL template file, greatly improving the efficiency of tunnel portal structure calcula-tion. The accuracy of the software is verified by comparing with the results of hand calculation.
引文
[1]中华人民共和国铁道部.铁路隧道设计规:TB10003-2005[S].北京:中国铁道出版社,2005.Ministry of Railways of the People's Republic of China.Code for Design on Tunnel of Railway:TB10003-2005[S].Beijing:China Railway Publishing House,2005.
[2]周佳媚,严松宏,王英学.单线铁路隧道洞门结构分项系数的研究[J].西南交通大学学报,2001,36(5):505-508.ZHOU Jiamei,YAN Songhong,WANG Yingxue.Analysis of Partial Coefficients of Single-track Railway Tunnel Portal Structures[J].Journal of Southwest Jiaotong University,2001,36(5):505-508.
[3]李伦贵,高波.翼墙式洞门可靠性分析[J].西南交通大学学报,2002,37(5):496-499.LI Lungui,GAO Bo.Reliability Analysis of Wing Wall Tunnel Portal[J].Journal of Southwest Jiaotong University,2002,37(5):496-499.
[4]严松宏,高波,周佳媚.铁路隧道洞门可靠度分析[J].甘肃科学学报,2003,15(3):73-77.YAN Songhong,GAO Bo,ZHOU Jiamei.Reliability Analysis of Railway Tunnel Portal Structures[J].Journal of Gansu Sciences,2003,15(3):73-77.
[5]胡瑶瑶.隧道洞门概率极限状态设计方法研究[D].成都:西南交通大学,2014.HU Yaoyao.Study on the Method of Probability Limit State Design for Tunnel Portal[D].Chengdu:Southwest Jiaotong University,2014.
[6]赵万强,周佳媚,蒙国往.铁路隧道洞门体系极限状态及可靠度研究[J].铁道工程学报,2015,(10):98-102.ZHAO Wanqiang,ZHOU Jiamei,MENG Guowang.Research on the System Limit State and Reliability of Railway Tunnel Portal Structure[J].Journal of Railway Engineering Society,2015,(10):98-102.
[7]周佳媚,蒙国往,高波.铁路隧道洞门目标可靠度及分项系数确定方法[J].铁道工程学报,2015,(10):93-97.ZHOU Jiamei,MENG Guowang,GAO Bo.Method for Determining Target Reliability and Partial Coefficient of Railway Tunnel Portal[J].Journal of Railway Engineering Society,2015,(10):93-97.
[8]喻渝,周佳媚.铁路隧道端墙式洞门整体式抗倾覆计算方法[J].铁道工程学报,2015,(12):63-69.YU Yu,ZHOU Jiamei.Integral Method for Calculating Anti-overturning Stability of Railway Tunnel Portal Structure[J].Journal of Railway Engineering Society,2015,(12):63-69.
[9]赵东平,冯天炜.翼墙式隧道洞门抗滑移整体式计算方法研究[J].铁道工程学报,2016,(4):70-75.ZHAO Dongping,FENG Tianwei.Research on the Integral Calculation Method of Slipping Stability of Wing Wall Tunnel Portal[J].Journal of Railway Engineering Society,2016,(4):70-75.
[10]中国铁路总公司.铁路隧道极限状态法设计暂行规范:Q/CR 9129-2015[S].北京:中国铁道出版社,2015.China Railway Corporation.Interim Code for Limit State Design of Railway Tunnel:Q/CR 9129-2015[S].Beijing:China Railway Publishing House,2015.
[11]贡金鑫,魏巍巍.工程结构可靠性设计原理[M].北京:机械工业出版社,2007.GONG Jinxin,WEI Weiwei.Principles of Reliability Design for Engineering Structures[M].Beijing:China Machine Press,2007.
[2]周佳媚,严松宏,王英学.单线铁路隧道洞门结构分项系数的研究[J].西南交通大学学报,2001,36(5):505-508.ZHOU Jiamei,YAN Songhong,WANG Yingxue.Analysis of Partial Coefficients of Single-track Railway Tunnel Portal Structures[J].Journal of Southwest Jiaotong University,2001,36(5):505-508.
[3]李伦贵,高波.翼墙式洞门可靠性分析[J].西南交通大学学报,2002,37(5):496-499.LI Lungui,GAO Bo.Reliability Analysis of Wing Wall Tunnel Portal[J].Journal of Southwest Jiaotong University,2002,37(5):496-499.
[4]严松宏,高波,周佳媚.铁路隧道洞门可靠度分析[J].甘肃科学学报,2003,15(3):73-77.YAN Songhong,GAO Bo,ZHOU Jiamei.Reliability Analysis of Railway Tunnel Portal Structures[J].Journal of Gansu Sciences,2003,15(3):73-77.
[5]胡瑶瑶.隧道洞门概率极限状态设计方法研究[D].成都:西南交通大学,2014.HU Yaoyao.Study on the Method of Probability Limit State Design for Tunnel Portal[D].Chengdu:Southwest Jiaotong University,2014.
[6]赵万强,周佳媚,蒙国往.铁路隧道洞门体系极限状态及可靠度研究[J].铁道工程学报,2015,(10):98-102.ZHAO Wanqiang,ZHOU Jiamei,MENG Guowang.Research on the System Limit State and Reliability of Railway Tunnel Portal Structure[J].Journal of Railway Engineering Society,2015,(10):98-102.
[7]周佳媚,蒙国往,高波.铁路隧道洞门目标可靠度及分项系数确定方法[J].铁道工程学报,2015,(10):93-97.ZHOU Jiamei,MENG Guowang,GAO Bo.Method for Determining Target Reliability and Partial Coefficient of Railway Tunnel Portal[J].Journal of Railway Engineering Society,2015,(10):93-97.
[8]喻渝,周佳媚.铁路隧道端墙式洞门整体式抗倾覆计算方法[J].铁道工程学报,2015,(12):63-69.YU Yu,ZHOU Jiamei.Integral Method for Calculating Anti-overturning Stability of Railway Tunnel Portal Structure[J].Journal of Railway Engineering Society,2015,(12):63-69.
[9]赵东平,冯天炜.翼墙式隧道洞门抗滑移整体式计算方法研究[J].铁道工程学报,2016,(4):70-75.ZHAO Dongping,FENG Tianwei.Research on the Integral Calculation Method of Slipping Stability of Wing Wall Tunnel Portal[J].Journal of Railway Engineering Society,2016,(4):70-75.
[10]中国铁路总公司.铁路隧道极限状态法设计暂行规范:Q/CR 9129-2015[S].北京:中国铁道出版社,2015.China Railway Corporation.Interim Code for Limit State Design of Railway Tunnel:Q/CR 9129-2015[S].Beijing:China Railway Publishing House,2015.
[11]贡金鑫,魏巍巍.工程结构可靠性设计原理[M].北京:机械工业出版社,2007.GONG Jinxin,WEI Weiwei.Principles of Reliability Design for Engineering Structures[M].Beijing:China Machine Press,2007.