软弱围岩隧道钢纤维混凝土衬砌承载特性模型试验研究

崔光耀; 王道远; 倪嵩陟; 袁金秀; 马军辉; 朱长安

doi:10.11779/CJGE201710008

软弱围岩隧道钢纤维混凝土衬砌承载特性模型试验研究 English Version

1. 北方工业大学土木工程学院,北京 100144;
2. 石家庄铁道大学土木工程学院,河北石家庄 050091;
3. 河北交通职业技术学院土木工程系,河北石家庄 050091;
4. 中铁七局集团郑州工程有限公司,河南郑州 450052;
5. 四川省交通厅公路规划勘察设计研究院,四川成都 610041

基金项目: 国家自然科学基金项目（51408008,51478277）; 国家十二五科技支撑项目（2012BAK09B06）; 河北省自然科学基金项目（E201619002）; 四川省应用基础研究计划项目（2014JY0090,2015JY0166）; 北京市教委青年拔尖人才培育计划项目; 北方工业大学科研创新团队（XN018007）

详细信息

作者简介:
崔光耀(1983-),男,山东莒南人,博士,副教授,主要从事隧道与地下工程的教学与研究。E-mail: cyao456@163.com。

通讯作者:
王道远，E-mail：wtg-888@163.com

中图分类号: TU457
计量
- 文章访问数: 304
- HTML全文浏览量: 3
- PDF下载量: 403
出版历程
- 收稿日期: 2016-06-19
- 发布日期: 2017-10-24

Model tests on bearing characteristics of steel fiber-reinforced concrete lining of weak surrounding rock tunnel

1. School of Civil Engineering, North China University of Technology, Beijing 100144, China;
2. School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
3. Department of Civil Engineering,Hebei Jiaotong Vocational and Technical College, Shijiazhuang 050091, China;
4. Zhengzhou Engineering Co., Ltd., China Railway Tieqiju Civil Engineering Group, Zhengzhou 450052, China;
5. Highway Planning, Survey, Design and Research Institute, Sichuan Provincial Communications Department, Chengdu 610041, China

摘要

摘要: 为满足软弱围岩隧道开挖后尽快封闭岩面、适应一定变形及提供足够支护力的要求,通过素混凝土、钢筋混凝土及钢纤维混凝土衬砌力学行为室内模型试验,对钢纤维混凝土衬砌的承载特性进行研究。研究结果表明：钢纤维混凝土衬砌初裂荷载提高了20%,极限荷载得到较大提高;掺入钢纤维后衬砌结构韧性增强,初裂后仍能抵抗一定变形并较大降低变形速率,与素混凝土、钢筋混凝土相比可承受更大的变形;钢纤维混凝土衬砌初裂后承载特性曲线缓慢上升,至2倍初裂荷载时仍无收敛迹象,素混凝土快速收敛,钢筋混凝土在一定缓慢上升后快速趋于收敛,软弱围岩条件下,钢纤维混凝土初支在一定变形后可与围岩特征曲线相交,达到围岩-结构稳定状态,是一种力学性能良好的快速支护材料。研究成果对软弱围岩隧道的设计与施工都具有重要的意义。
- 隧道工程 /
- 软弱围岩 /
- 钢纤维混凝土 /
- 承载特性 /
- 模型试验
Abstract: In order to meet the requirements of weak surrounding rock tunnel to close rock surface as soon as possible after excavation, to adapt to a certain deformation and to provide sufficient supporting force, through the indoor model tests on the mechanical behaviors of linings of plain concrete, reinforced concrete and steel fiber-reinforced concrete, the bearing characteristics of steel fiber-reinforced concrete lining are studied. The results show that the initial cracking load of the steel fiber-reinforced concrete lining increases by 20%, and the ultimate load is greatly improved. The toughness of lining structure is enhanced after mixing steel fiber, the lining structure can still resist certain deformation and reduce the deformation rate greatly after initial cracking, and it can bear greater deformation as compared with the plain concrete and the reinforced concrete. The bearing characteristic curve of steel fiber-reinforced concrete lining rises slowly after the initial cracking, while that of the plain concrete has a rapid convergence, and that of the reinforced concrete exhibits rapid convergence after slow rise. Owing to the weak surrounding rock, the initial support of steel fiber-reinforced concrete can intersect with the characteristic curve of the surrounding rock after a certain deformation so as to reach the stable state of surrounding rock and structure. The study results are of important significance to the design and construction of weak surrounding rock tunnel.
- tunnel engineering /
- weak surrounding rock /
- steel fiber-reinforced concrete /
- bearing characteristic /
- model test

HTML全文

参考文献(15)

[1]	李鹏飞, 赵勇, 刘建友. 隧道软弱围岩变形特征与控制方法[J]. 中国铁道科学, 2014, 35(5): 55-61. (LI Peng-fei, ZHAO Yong, LIU Jian-you. Deformation characteristics and control method of tunnel with weak surrounding rock[J]. China Railway Science, 2014, 35(5): 55-61. (in Chinese))
[2]	朱永全, 李文江, 赵勇. 软弱围岩隧道稳定性变形控制技术[M]. 北京: 人民交通出版社, 2012. (ZHU Yong-quan, LI Wen-jiang, ZHAO Yong. Deformation control technology of weak surrounding rock tunnel stability[M]. Beijing: China Communications Press, 2012. (in Chinese))
[3]	徐前卫, 马静, 朱合华, 等. 软弱破碎隧道围岩开挖面稳定性的拟三维模型试验研究[J]. 岩土工程学报, 2011, 33(增刊1): 465-470. (XU Qian-wei, MA Jing, ZHU He-hua, et al. Pseudo-three-dimensional experimental study on tunnel face stability in weak and fractured rock mass[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(S1): 465-470. (in Chinese))
[4]	杜国平, 刘新荣, 李晓红, 等. 隧道单层衬砌结构稳定性现场试验及变形控制[J]. 重庆大学学报, 2013, 36(12): 79-85, 91. (DU Guo-ping, LIU Xin-rong, LI Xiao-hong, et al. Field test and deformation controlling for single tunneling lining stability[J]. Journal of Chongqing University, 2013, 36(12): 79-85, 91. (in Chinese))
[5]	宋艳, 朱珍德, 张慧慧. 深埋隧道喷射钢纤维混凝土支护的数值模拟[J]. 水利与建筑工程学报, 2013, 11(2): 204-208. (SONG Yan, ZHU Zhen-de, ZHANG Hui-hui. Numerical simulation for sprayed steel fiber concrete supporting in deep-buried tunnel[J]. Journal of Water Resources and Architectural Engineering, 2013, 11(2): 204-208. (in Chinese))
[6]	宋战平, 刘京, 吴焕通, 等. 长陡斜井钢纤维喷射混凝土单层衬砌试验研究[J]. 西安建筑科技大学学报（自然科学版）, 2013, 45(3): 348-355. (SONG Zhang-ping, LIU Jing, WU Huan-tong, et al. Experimental research on single-layer tunnel lining of steel fiber shotcrete and the application in motenlin deviated well[J]. Journal of Xi'an University of Architecture & Technology (Natural Science Edition), 2013, 45(3): 348-355. (in Chinese))
[7]	韩涛, 杨维好, 任彦龙, 等. 钢骨钢纤维高强混凝土井壁水平承载特征的计算和试验[J]. 中国矿业大学学报, 2012, 41(2): 205-211. (HAN Tao, YANG Wei-hao, REN Yan-long, et al. Numerical and experimental model studies of the horizontal bearing properties of shaft linings of encased steel or steel fiber reinforced, high strength concrete[J]. Journal of China University of Mining & Technology, 2012, 41(2): 205-211. (in Chinese))
[8]	宋卫民. 隧道二衬纤维混凝土防渗抗裂性能研究[D]. 长沙:中南大学, 2013. (SONG Wei-min. Research of impermeability and anti-cracking properties of tunnel secondary lining fiber concrete[D]. Changsha: Central South University, 2013. (in Chinese))
[9]	刘新荣, 祝云华, 李晓红, 等. 隧道钢纤维喷射混凝土单层衬砌试验研究[J]. 岩土力学, 2009, 30(8): 2319-2323. (LIU Xin-rong, ZHU Yun-hua, LI Xiao-hong, et al. Experimental research on single-layer tunnel lining of steel fiber shotcrete[J]. Rock and Soil Mechanics, 2009, 30(8): 2319-2323. (in Chinese))
[10]	丁一宁, 刘思国. 钢纤维自密实混凝土弯曲韧性和剪切韧性试验研究[J]. 土木工程学报, 2010, 43(11): 55-63. (DING Yin-ing, LIU Si-guo. Study of the flexural and shear toughness of steel fiber reinforced self-compacting concrete[J]. China Civil Engineering Journal, 2010, 43(11): 55-63. (in Chinese))
[11]	PASSUELLO A, MORICONI G, SHAH S P. Cracking behavior of concrete with shrinkage reducing admixtures and PVA fibers[J]. Cement & Concrete Composites, 2009(39): 699-704.
[12]	BOGHOSSIAN E,WEGNER L D. Use of flax fiber to reduce plastic shrinkage cracking in concrete[J]. Cement & Concrete Composites, 2008(30): 929-937.
[13]	KIM J H J, PARK C G, LEE S W, et al. Effects of the geometry of recycled PET fiber-reinforcement on shrinkage cracking of cement-based composites[J]. Composites (Part B), 2008(38): 442-450.
[14]	闫治国, 朱合华, 梁利. 火灾高温下隧道衬砌管片力学性能试验[J]. 同济大学学报(自然科学版), 2012, 40(6): 823-828. (YAN Zhi-guo, ZHU He-hua, LIANG Li. Experimental study on mechanical performance of lining segments in fireaccidents[J]. Journal of Tongji University (Natural Science Edition), 2012, 40(6): 823-828. (in Chinese))
[15]	刘赫凯, 丁一宁. 钢纤维自密实混凝土管片力学性能的试验研究[J]. 建筑材料学报, 2011, 14(1): 10-13, 21. (LIU He-kai, DING Yi-ning. Experimental study on performance of steel fiber reinforced self-compacting concrete (SCC) tunnel lining[J]. Journal of Building Materials, 2011, 14(1): 10-13, 21. (in Chinese))