铁路隧道衬砌目标可靠指标研究

赵东平,喻渝,赵万强,宋玉香,路军富

铁道工程学报 ›› 2015, Vol. 32 ›› Issue (6) : 51-56.

PDF(380 KB)
PDF(380 KB)
铁道工程学报 ›› 2015, Vol. 32 ›› Issue (6) : 51-56.
隧道工程

铁路隧道衬砌目标可靠指标研究

  • 赵东平,喻渝,赵万强,宋玉香,路军富
作者信息 +

Research on the Target Reliability Index of Railway Tunnel Lining

  • ZHAO Dong一ping,Yu一yu,ZHAO Wan一qiang,SONG Yu一xiangZ,LU Jun一fu
Author information +
文章历史 +

摘要

研究目的:现行铁路隧道设计规范中概率极限状态法的适用范围局限于单线铁路隧道的整体式衬砌,而我国铁路隧道的现状是双线及大跨隧道越来越多,复合式衬砌已经广泛使用,因此现行规范中的概率极限状态法无法满足隧道工程设计需要。为拓展概率极限状态法在铁路隧道设计中的适用范围,便于开展国际交流,有必要开展铁路隧道概率极限状态设计方法研究,而结构目标可靠指标是应用概率极限状态的前提和基础。
研究结论:研究表明:(1)现行铁路隧道复合式衬砌通用参考图可靠性水平较高,对于钢筋混凝土衬砌、素混凝土衬砌抗压及素混凝土衬砌抗裂三种极限状态下,其对应的可靠指标均值分别为4. 27 、13. 71和7.48;(2)国内相近规范中在结构安全等级为二级的情况下,对于延性破坏状态其日标可靠指标变化范围为3. 2-4. 2,对于脆性破坏状态其目标可靠指标变化范围为3.7-4.7;(3)北欧国家的日标可靠指标不区分混凝土的延性破坏或脆性破坏,在结构安全等级为二级时,北欧国家规定设计日标可靠指标取4.26,而英国的CIRIA标准规定设计目标可靠指标取值3.71;(4)综合考虑参考图校准及国内外调研结果,提出我国铁路隧道衬砌承载能力极限状态目标可靠指标,对于延性破坏和脆性破坏两种情况:当安全等级为二级时,其对应的目标可靠指标分别为4. 2和4. 7,当安全等级为一级或三级时,对应的目标可靠指标分别提高或降低0.5;(5)本研究成果已经成功应用于《铁路隧道极限状态法暂行规范》。

Abstract

Research purposes:In the current design code of railway tunnel,the application scope of the probability limit state design method is confined to the single line railway tunnelintegral lining,however, the present situation of railway tunnels in China is the lane and large span tunnel are more and more,the composite lining has been widely used in tunnel. Therefore the probability limit state method in the current design codecan not meet the need for tunnel engineering design,the application scope of the probability limit state method in railway tunnel design need to be extended. At the same time,for thefacilitate international communication,it is necessary to study railway tunnel probability limit state design method,and the structure design target reliability index is the basisfor application of probability limit state.
Research conclusions:Research shows that:(1)On three kinds of limit state of reinforced concrete limit state,concrete compressive and tensilelimit state,the corresponding mean value of reliable index are respectively 4. 27,13.71 and7.48. These calculation results show that the reliability level of existing railway tunnelliningreferenee maps is higher. (2)In the related codes of China,under the second safety level condition of the structure,for the ductility failure type, their reliability indexes are between 3 .2 and 4. 2,for the brittleness failure type,their reliability indexes are between 3 .7 and 4. 7.(3)The target reliability index of European countries has no relationship with failure mode,for the structure of the second level of safety grade,European countries regulations design target reliability index is 4. 26,and however it is 3. 71 in Britain.(4)Considering the calibration calculation results andtarget reliability indexes from the domestic and foreign codes,the target reliability index of railway tunnel lining on bearing capacity limit state was given, which will establish a basis for China railway tunnel structure reliability design. When the safety grade is the second level,for two state of ductile failure and brittle failure,the corresponding target reliability index were 4. 2 and 4. 7,if the safety grade is first or third level,the eorrespondingtarget reliability indexes are increased or decreased by 0. 5. (5)The research results had been successfully applied to the Provisional Code for Railway Tunnel Limit State Method.

关键词

铁路隧道 / 复合式衬砌 / 参考图 / 可靠指标

Key words

railway tunnel / composite lining / reference maps / reliability index

引用本文

导出引用
赵东平, 喻渝, 赵万强, . 铁路隧道衬砌目标可靠指标研究[J]. 铁道工程学报, 2015, 32(6): 51-56
ZHAO Dong一ping, Yu一yu, ZHAO Wan一qiang, et al. Research on the Target Reliability Index of Railway Tunnel Lining[J]. Journal of Railway Engineering Society, 2015, 32(6): 51-56

参考文献

[1]日本土木学会.隧道标准规范(盾构篇)及解说[M].北 京:中国建筑工业出版社,2001.
Japan Society of Civil Engineers, Japanese Standard for Shield Tunneling [ M ].Beijing:Chinese Architecture& Building Press, 2001.
[2]The British Tunneling Society and The Institution of Civil Engineers, Tunnel Lining Design Guide[M]. London, Published by Thomas Telford Publishing, Thomas Telford Ltd,l Heron Quay, London E14 4JD, 2004.
[3]The British Tunneling Society and The Institution of Civil Engineers, Specification for Tunnelling(3rd Edition)[M].Published by Thomas Telford Publishing, Thomas Telford Ltd, 1 Heron Quay, London E14 4JD,1997.
[4]TB 10003-1999,铁路隧道设计规范[S].
TB 10003-1999,Code for Design on Tunnel of Railway [S].
[5]魏永幸,罗一农,刘昌清.基于概率论的支挡结构极限状 态设计方法[J].铁道工程学报,2014(7):33一38.
Wei Yongxing, Luo Yinong, Liu Changqing. Method of Retaining Structure Limit State Design Based on Probability Theory [ J ].Journal of Railway Engineering Society, 2014(7) :33一38.
[6]TB 10003-2001,铁路隧道设计规范[S].
TB 10003-2001,Code for Design on Tunnel of Railway [S].
[7]宋玉香,景诗庭,刘勇.单线电气化铁路隧道衬砌结构目 标可靠指标的试算分析[J].岩石力学与工程学报,1999 (1):46一49.
Sony Yuxiang, Jinn Shiting, Liu Yong. Calculation of object Reliability Index of Tunnel Lining Structure for Single一Track Electrification Railway[J].Chinese Journal of Rock Mechanics and Engineering,1999(1): 46一49.
[8]GB 50216-1994,铁路工程结构可靠度设计统一标准 [S].
GB 50216-1994,Unified Design Standard for Reliability of Railway Engineering Structures[S].
[9]景诗庭,朱永全,宋玉香.隧道结构可靠度[M].北京:中 国铁道出版社,2002.
Jing Shiting, Zhu Yongquan, Song Yuxiang. Reliability of Tunnel Structure[M].Beijing:China Railway Publishing House, 2002.
[10]沈蒲生.混凝土结构设计新规范(GB 50010-2010 )解读 [M].北京:机械工业出版社,2011.
Shen Pusheng. Interpretations of New Code for Design of Concrete Structures(GB 50010-2010)[M]. Beijing:China Machine Press, 2011.

基金

铁道部科技研究开发项目(2012G014 - D;中国中铁股份有限公司科研项目[13164174(12一14)]

PDF(380 KB)

5498

Accesses

0

Citation

Detail

段落导航
相关文章

/