基于统一强度准则改进式的压力隧洞弹塑性应力分析

›› 2011, Vol. 32 ›› Issue (S1): 236-240.

基于统一强度准则改进式的压力隧洞弹塑性应力分析

刘伟平¹，罗小艳²，胡小荣¹，扶名福¹

1. 南昌大学建筑工程学院，南昌 330031；2. 江西科技师范学院建筑工程学院，南昌330013

收稿日期:2010-12-23 出版日期:2011-05-15 发布日期:2011-05-16
作者简介:刘伟平，男，1981年生，博士研究生，讲师，主要从事岩土工程科研与教学工作
基金资助:
国家自然科学基金项目资助（No.10862004）；江西省自然科学基金资助（No.2007GZC2073）

Elastoplastic stress analysis of pressure tunnel based on improvement of unified strength criterion

LIU Wei-ping¹, LUO Xiao-yan², HU Xiao-rong¹, FU Ming-fu¹

1. College of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, China; 2. College of Civil Engineering and Architecture, Jiangxi Science and Technology Normal University, Nanchang 330013, China

Received:2010-12-23 Online:2011-05-15 Published:2011-05-16

摘要/Abstract

摘要： 基于具有抛物线型强度包络线的统一强度准则，即对双剪双参数统一强度准则进行相应的非线性化处理，考虑了中间主应力影响，分析在渗流作用下压力隧洞弹塑性力学行为。通过分析中间主应力对压力隧洞的塑性区半径影响可知，随着中间主应力的参数的增大，塑性区半径也相应减小。通过考虑和不考虑渗流场影响的实例对比分析表明，考虑渗流场时所得塑性区半径要比不考虑时大，而且随着孔隙水压力的增大，渗流场的影响越显著。隧洞径向应力和切向应力也与中间主应力参数b和渗流场密切相关。通过与直线型统一强度准则对比分析可知，采用两种不同准则时所得结果相差较大。隧洞设计时应根据岩石强度特性合理地选择数b，为强度包络线近似于二次抛物线的围岩隧洞设计提供理论依据

关键词: 统一强度准则, 抛物线型强度包络线, 压力隧洞, 渗流

Abstract: Based on the unified strength criterion with parabolic failure envelope, the nonlinear improved expression of the two-parameter twin shear unified criterion is obtained. Elastoplastic analysis of pressure tunnels is presented by considering the seepage and intermediate principal stress. The results show that the intermediate principalstress parameter b in unified strength theory has significant effect on the radius of plastic zone. The radius of plastic zone is decreased along with the increase of the intermediate principal stress parameter b. An example is analyzed and contrasted with and without considering seepage. The radius of plastic zone with considering influence of seepage is larger than that without considering the seepage influence. The results also indicate that the parameter b and seepage have significant influences on tangential stress and radial stress. The results obtained by the original linear expression and the nonlinear improved expression of the two-parameter twin shear unified strength theory are large difference. In tunnel design, the unified strength theory parameter should be reasonably adopted according to surrounding rock material properties. So as to provide theoretical supports for tunnel design.

Key words: unified strength criterion, parabolic failure envelope, pressure tunnel, seepage

中图分类号:

U 452

刘伟平，罗小艳，胡小荣，扶名福. 基于统一强度准则改进式的压力隧洞弹塑性应力分析[J]. , 2011, 32(S1): 236-240.

LIU Wei-ping, LUO Xiao-yan, HU Xiao-rong, FU Ming-fu. Elastoplastic stress analysis of pressure tunnel based on improvement of unified strength criterion[J]. , 2011, 32(S1): 236-240.

参考文献

null

相关文章 15

[1]	苏永华, 李诚诚. 强降雨下基于Green-Ampt模型的边坡稳定性分析[J]. 岩土力学, 2020, 41(2): 389-398.
[2]	刘成禹, 陈博文, 罗洪林, 阮家椿, . 满流条件下管道破损诱发渗流侵蚀的试验研究[J]. 岩土力学, 2020, 41(1): 1-10.
[3]	刘忠玉, 夏洋洋, 张家超, 朱新牧. 考虑Hansbo渗流的饱和黏土一维弹黏塑性固结分析[J]. 岩土力学, 2020, 41(1): 11-22.
[4]	夏才初, 喻强锋, 钱鑫, 桂洋, 庄小清. 常法向刚度条件下岩石节理剪切−渗流特性试验研究[J]. 岩土力学, 2020, 41(1): 57-66.
[5]	支永艳, 邓华锋, 肖瑶, 段玲玲, 蔡佳, 李建林. 微生物灌浆加固裂隙岩体的渗流特性分析[J]. 岩土力学, 2019, 40(S1): 237-244.
[6]	许江, 邬君宇, 刘义鑫, 雷娇, . 不同充填度下岩体剪切−渗流耦合试验研究[J]. 岩土力学, 2019, 40(9): 3416-3424.
[7]	刘伟俊, 张晋勋, 单仁亮, 杨昊, 梁辰, . 渗流作用下北京砂卵石地层多排管局部水平冻结体温度场试验[J]. 岩土力学, 2019, 40(9): 3425-3434.
[8]	李博, 黄嘉伦, 钟振, 邹良超, . 三维交叉裂隙渗流传质特性数值模拟[J]. 岩土力学, 2019, 40(9): 3670-3768.
[9]	张强, 李小春, 周英博, 石露, 白冰, . 高压孔隙CO2/水作用下完整四川三叠系砂岩剪切特性的试验研究[J]. 岩土力学, 2019, 40(8): 3028-3036.
[10]	王鹏飞, 谭文辉, 马学文, 李子建, 刘景军, 武洋帆, . 不同粗糙度和隙宽贯通充填裂隙渗流特性试验研究[J]. 岩土力学, 2019, 40(8): 3062-3070.
[11]	张天军, 庞明坤, 蒋兴科, 彭文清, 纪翔, . 负压对抽采钻孔孔周煤体瓦斯渗流特性的影响[J]. 岩土力学, 2019, 40(7): 2517-2524.
[12]	曹洪, 胡瑶, 骆冠勇. 滤管两端均不在含水层层面的承压不完整井近似计算方法研究[J]. 岩土力学, 2019, 40(7): 2774-2780.
[13]	刘忠玉, 崔鹏陆, 郑占垒, 夏洋洋, 张家超. 基于非牛顿指数渗流和分数阶Merchant模型的一维流变固结分析[J]. 岩土力学, 2019, 40(6): 2029-2038.
[14]	刘健, 陈亮, 王春萍, 马利科, 王驹. 一种非稳态气体渗流条件下岩石渗透特性参数计算方法及应用[J]. 岩土力学, 2019, 40(5): 1721-1730.
[15]	徐强, 肖明, 陈俊涛, 倪少虎, . 渗流监测数据缺失处理与渗透稳定判断[J]. 岩土力学, 2019, 40(4): 1526-1534.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed