喷射混凝土早龄期徐变的试验研究及预测

谢 楠, 杨成永, 欧阳杰, 尹智宏, 郭军晓

谢 楠, 杨成永, 欧阳杰, 尹智宏, 郭军晓. 喷射混凝土早龄期徐变的试验研究及预测[J]. 工程力学, 2013, 30(3): 365-370. DOI: 10.6052/j.issn.1000-4750.2012.08.0589
引用本文: 谢 楠, 杨成永, 欧阳杰, 尹智宏, 郭军晓. 喷射混凝土早龄期徐变的试验研究及预测[J]. 工程力学, 2013, 30(3): 365-370. DOI: 10.6052/j.issn.1000-4750.2012.08.0589
XIE Nan, YANG Cheng-yong, OUYANG Jie, YIN Zhi-hong, GUO Jun-xiao. EXPERIMENTAL RESEARCH AND PREDICTION ON SHOTCRETE CREEP AT EARLY AGE[J]. Engineering Mechanics, 2013, 30(3): 365-370. DOI: 10.6052/j.issn.1000-4750.2012.08.0589
Citation: XIE Nan, YANG Cheng-yong, OUYANG Jie, YIN Zhi-hong, GUO Jun-xiao. EXPERIMENTAL RESEARCH AND PREDICTION ON SHOTCRETE CREEP AT EARLY AGE[J]. Engineering Mechanics, 2013, 30(3): 365-370. DOI: 10.6052/j.issn.1000-4750.2012.08.0589

喷射混凝土早龄期徐变的试验研究及预测

基金项目: 国家自然科学基金项目(50978020)
详细信息
    通讯作者:

    谢 楠

  • 中图分类号: TU528.53; TU317.1

EXPERIMENTAL RESEARCH AND PREDICTION ON SHOTCRETE CREEP AT EARLY AGE

  • 摘要: 为了掌握隧道初期支护喷射混凝土的早龄期徐变性能,以地铁和公路隧道最为常用的两种配合比的喷射混凝土为研究对象,模拟施工环境,对喷射混凝土的早龄期徐变性能进行试验研究,完成了不同龄期试件的强度、收缩和受压应变测试,分析了早龄期喷射混凝土徐变特点。将试验值与B3模型和GL2000模型预测值进行比较后,分析了造成试验值与模型预测值之间存在较大偏差的主要原因,有针对性的对GL2000模型的关键项进行了修正,提出了适合于早龄期喷射混凝土徐变度的预测模型。
    Abstract: In order to grasp the creep performance of the early-age shotcrete used for the primary lining of a tunnel, creep experiments have been carried out with two different concrete mixes that are mostly used in tunnels of subway and highway respectively by simulating a typical construction environment. The strengths, shrinkage strains and compressive strains of specimens loaded at different ages are measured and the behavior of shotcrete creep at early age is investigated. The comparison between experiment results and predictive values of GL2000 and B3 are made and the main reasons for deviations between the experimental values and predictive values are analyzed. Finally, the pertinent modifications of the key parts of GL2000 are done and a new prediction model of shotcrete creep at early age is proposed.
  • [1] "[1] CEB-FIP model code 1990: Design code [S]. London: Thomas Telford, 1994.
    [2] ACI Committee 209, Prediction of creep, shrinkage and temperature effects in concrete structures (ACI209R-92) [S]. Detroit: American Concrete Institute, 1992.
    [3] Bazant Zdenek P, Sandeep Baweja. Creep and shrinkage prediction model for analysis and design of concrete structures: Model B3 [R]. Farmington Hills, Michigan: Concrete Institute, 2000.
    [4] Gardner N J, Lockman M J. Design provisions for drying shrinkage and creep of normal-strength concrete [J]. ACI Materials Journal, 2001, 98(2): 159―167.
    [5] 卫军, 赵红京. 干燥地区混凝土徐变、收缩估算体系及验证[J]. 华中科技大学学报, 2001, 29(7): 109―111.
    Wei Jun, Zhao Hongjing. Prediction for concrete shrinkage and creep in extreme dry areas [J]. Jounral of Huazhong Universiyt of Science and Technology, 2001, 29(7): 109―111. (in Chinese)
    [6] 宋灿, 徐伟. 用修正B3模型预测泵送高强混凝土的徐变[J]. 建筑材料学报, 2007, 10(1): 101―104.
    Song Can, Xu Wei. Creep prediction of pump high strength concrete by using updated B3 model [J]. Journal of Building Materials, 2007, 10(1): 101―104. (in Chinese)
    [7] 郑建岚, 晁鹏飞. 基于水化度及其结构组成的自密实混凝土基本徐变计算模型[J]. 工程力学, 2009, 26(12): 71―75.
    Zheng Jianlan, Chao Pengfei. Basic creep model of self-compacting concrete based on hydration degree and material composition [J]. Engineering Mechanics, 2009, 26(12): 71―75. (in Chinese)
    [8] ?stergaard Lennart, Lange David A, Altoubat Salah A, Stang Henrik. Tensile basic creep of early-age concrete under constant load [J]. Cement and Concrete Research, 2001, 31(12): 1895―1899
    [9] 周浪. 间隔包裹FRP约束长龄期混凝土圆柱的徐变变形分析[J]. 建筑科学, 2011, 27(增刊1): 1―3.
    Zhou Lang. Creep analysis of fiber straps-wrapped long-term concrete columns [J]. Building Science, 2011, 27(Suppl 1): 1―3. (in Chinese)
    [10] 柯敏勇, 刘海祥, 陈松. 桥用高强混凝土双轴徐变试验研究[J]. 建筑结构学报, 2012, 33(6): 116―122.
    Ke Minyong, Liu Haixiang, Chen Song. Biaxial creep experiment for high strength concrete in bridge engineering [J]. Journal of Building Structures, 2012, 33(6): 116―122. (in Chinese)
    [11] Marangon E, Toledo Filho R D, Fairbairn E M R. Basic creep under compression and direct tension loads of self-compacting-steel fibers reinforced concrete [J]. High Performance Fiber Reinforced Cement Composites 6. RILEM Bookseries, 2012, Volume 2, Part 3: 171―178.
    [12] 李继业. 混凝土配制实用技术手册[M]. 北京: 化学工业出版社, 2008: 191―205.
    Li Jiye. Practical technology manuals of concrete mix design [M]. Beijing: Chemical Industry Press, 2008: 191―205. (in Chinese).
    [13] Sercombe Jerome, Hellmich Christian, Ulm Franz- Josef, Mang Herbert. Modeling of early-age creep of shotcrete. I: Model and model parameters [J]. Journal of Engineering Mechanics, ASCE, 2000, 126(3): 284―291.
    [14] Hellmich Christian, Sercombe Jerome, Ulm Franz- Josef, et al. Modeling of early-age creep of shotcrete. Ⅱ: Application to tunneling [J]. Journal of Engineering Mechanics, ASCE, 2000, 126(3): 292―299.
    [15] Pichler Christian, Lackner Roman, Mang Herbert A. Multiscale model for creep of shotcrete from logarithmic-type viscous behavior of CSH at the μm-scale to macroscopic tunnel analysis [J]. Journal of Advanced Concrete Technology, 2008, 6(1): 91―110.
    [16] 李洪泉, 杨成永, 陆景慧. 干缩和徐变对隧道喷射混凝土支护安全的影响[J]. 北京交通大学学报, 2009, 33(4): 18―22.
    Li Hongquan, Yang Chengyong, Lu Jinghui. Influence of shrinkage and creep of shotcrete on the safety of the primary support of tunnels [J]. Journal of Beijing Jiaotong University, 2009, 33(4): 18―22. (in Chinese)
    [17] Bazant Z P. Prediction of concrete creep and shrinkage: past, present and future [J]. Nuclear Engineering and Design, 2001, 203(1): 27―38.
    [18] GB/T 50081-2002, 普通混凝土力学性能试验方法标准[S]. 北京: 中国建筑工业出版社, 2002.
    GB/T 50081-2002, Standard for test of mechanical properties on ordinary concrete [S]. Beijing: China Architecture Industry Press, 2002. (in Chinese)
    [19] GB/T 50082-2009, 普通混凝土长期性能和耐久性能试验方法[S]. 北京: 中国建筑工业出版社, 2009.
    GB/T 50082-2009, Standard for test methods of long-term performance and durability properties of ordinary concrete [S]. Beijing: China Architecture Industry Press, 2009. (in Chinese)
    [20] Al-Manaseer Akthem, Lam Jian-Ping. Statistical evaluation of shrinkage and creep models [J]. ACI Materials Journal, 2005, 102(3): 170―176.
    [21] Gardner N J. Comparison of prediction provisions for drying shrinkage and creep of normal-strength concretes [J]. Canadian Journal of Civil Engineering, 2004, 31(5): 767―775.

    "
计量
  • 文章访问数:  1309
  • HTML全文浏览量:  37
  • PDF下载量:  129
  • 被引次数: 0
出版历程
  • 收稿日期:  2012-08-13
  • 修回日期:  2012-10-07
  • 刊出日期:  2013-03-24

目录

    /

    返回文章
    返回