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UHPC单轴拉伸试验狗骨试件优化设计

杨简 陈宝春 沈秀将 林毅焌

杨简, 陈宝春, 沈秀将, 林毅焌. UHPC单轴拉伸试验狗骨试件优化设计[J]. 工程力学, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446
引用本文: 杨简, 陈宝春, 沈秀将, 林毅焌. UHPC单轴拉伸试验狗骨试件优化设计[J]. 工程力学, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446
YANG Jian, CHEN Bao-chun, SHEN Xiu-jiang, LIN Yi-jun. THE OPTIMIZED DESIGN OF DOG-BONES FOR TENSILE TEST OF ULTRA-HIGH PERFORMANCE CONCRETE[J]. Engineering Mechanics, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446
Citation: YANG Jian, CHEN Bao-chun, SHEN Xiu-jiang, LIN Yi-jun. THE OPTIMIZED DESIGN OF DOG-BONES FOR TENSILE TEST OF ULTRA-HIGH PERFORMANCE CONCRETE[J]. Engineering Mechanics, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446

UHPC单轴拉伸试验狗骨试件优化设计

doi: 10.6052/j.issn.1000-4750.2017.06.0446
基金项目: 国家自然科学基金重点项目(U1305245)
详细信息
    作者简介:

    杨简(1990-),男,湖北人,博士生,主要从事超高性能混凝土和钢管节点疲劳相关研究(E-mail:845175145@qq.com);沈秀将(1990-),男,福建人,博士生,主要从事超高性能混凝土相关研究(E-mail:shenxiujiang@foxmail.com);林毅焌(1993-),男,福建人,硕士生,主要从事超高性能混凝土相关研究(E-mail:502425419@qq.com).

    通讯作者: 陈宝春(1958-),男,福建人,教授,博导,主要从事钢管混凝土拱桥、超高性能混凝土和无缝桥梁相关研究(E-mail:baochunchen@fzu.edu.cn).
  • 中图分类号: TU528.31

THE OPTIMIZED DESIGN OF DOG-BONES FOR TENSILE TEST OF ULTRA-HIGH PERFORMANCE CONCRETE

  • 摘要: 单轴拉伸试验是测试超高性能混凝土(Ultra-high Performance Concrete,简称UHPC)破坏机理、抗拉性能与拉伸本构关系最有效的方法。单轴拉伸试验成功率不高。其常用的狗骨试件形状与尺寸对试验成功率有较大的影响,目前还未有统一的标准。调查表明,不带缺口的狗骨试件最适合用于UHPC单轴拉伸试验,主要有梯形、弧形和阶梯形三种类型。通过对试件的受力分析,提出两个应力均匀性指标来评价试件优劣。建立了三种共275根狗骨试件的有限元模型,通过分析,分别给出三种试件均匀性较好的参数。同时,建立了三组15根试件有限元模型,横向对比了三种狗骨试件的应力均匀性。对比结果表明,弧形狗骨试件受力均匀性最好,开展的验证性试验取得了95.8%的成功率,推荐采用。
  • [1] 蔡向荣, 徐世烺. UHTCC薄板弯曲荷载-变形硬化曲线与单轴拉伸应力-应变硬化曲线对应关系研究[J]. 工程力学, 2010, 27(1):8-16. Cai Xiangrong, Xu Shilang. Study on corresponding relationships between flexural load-deformation hardening curves and tensile stress-strain hardening curves of UHTCC[J]. Engineering Mechanics, 2010, 27(1):8-16. (in Chinese)
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    [26] Wang Y J, Li V C, Backer S. Experimental determination of tensile behavior of fiber reinforced concrete[J]. ACI Materials Journal, 1990, 87(5):461-468.
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    [29] Jun P, Viktor M. Behaviour of strain-hardening cement-based composites (SHCC) under monotonic and cyclic tensile loading:part 1-experimental investigations[J]. Cement and Concrete Composites, 2010, 32(10):801-809.
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    [32] Wille K, Kim D, Naaman A E. Strain-hardening UHP-FRC with low fiber contents[J]. Materials & Structures, 2011, 44(3):12.
    [33] Kim D J, Wille K, Naaman A E, et al. Strength dependent tensile behavior of strain hardening fiber reinforced concrete[M]//Parra-Montesinos G J, Reinhardt H W, Naaman A E, eds. HPFRCC, Springer Netherlands, 2012, 2:3-10.
    [34] Duy L N, Gum S R, Kyung T K, et al. Size and geometry dependent behavior of ultra-high performance fiber reinforced concrete[J]. Composites:Part B, 2014, 58(3):279-292.
    [35] GB/T 31387-2015, 活性粉末混凝土[S]. 北京:中国标准出版社, 2015. GB/T 31387-2015, Reactive powder concrete[S]. Beijing:Standards Press of China, 2015. (in Chinese)
    [36] Association Francaise de Genie Civil (AFGC)-Service d'etudes techniques desroutes et autoroutes (SETRA), Bétons fibrés à ultra-hautes performances-ultra high performance fibre-reinforced concretes, recommandations provisoires-Interim recommendations[S]. Paris:AFGC Scientific and Technical Documents, 2002:153.
    [37] Recommendations for design and construction of high performance fiber reinforced cement composites with multiple fine cracks (HPFRCC)[S]. Tokyo:Japan Society of Civil Engineers (JSCE), 2008:113.
    [38] 沈秀将. 活性粉末混凝土(RPC)受拉性能试验研究[D]. 福州:福州大学, 2015. Shen Xiujiang. Test study on tensile behavior of reactive powder concrete (RPC)[D]. Fuzhou:Fuzhou University, 2015. (in Chinese)
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  • 收稿日期:  2017-06-07
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UHPC单轴拉伸试验狗骨试件优化设计

doi: 10.6052/j.issn.1000-4750.2017.06.0446
    基金项目:  国家自然科学基金重点项目(U1305245)
    作者简介:

    杨简(1990-),男,湖北人,博士生,主要从事超高性能混凝土和钢管节点疲劳相关研究(E-mail:845175145@qq.com);沈秀将(1990-),男,福建人,博士生,主要从事超高性能混凝土相关研究(E-mail:shenxiujiang@foxmail.com);林毅焌(1993-),男,福建人,硕士生,主要从事超高性能混凝土相关研究(E-mail:502425419@qq.com).

    通讯作者: 陈宝春(1958-),男,福建人,教授,博导,主要从事钢管混凝土拱桥、超高性能混凝土和无缝桥梁相关研究(E-mail:baochunchen@fzu.edu.cn).
  • 中图分类号: TU528.31

摘要: 单轴拉伸试验是测试超高性能混凝土(Ultra-high Performance Concrete,简称UHPC)破坏机理、抗拉性能与拉伸本构关系最有效的方法。单轴拉伸试验成功率不高。其常用的狗骨试件形状与尺寸对试验成功率有较大的影响,目前还未有统一的标准。调查表明,不带缺口的狗骨试件最适合用于UHPC单轴拉伸试验,主要有梯形、弧形和阶梯形三种类型。通过对试件的受力分析,提出两个应力均匀性指标来评价试件优劣。建立了三种共275根狗骨试件的有限元模型,通过分析,分别给出三种试件均匀性较好的参数。同时,建立了三组15根试件有限元模型,横向对比了三种狗骨试件的应力均匀性。对比结果表明,弧形狗骨试件受力均匀性最好,开展的验证性试验取得了95.8%的成功率,推荐采用。

English Abstract

杨简, 陈宝春, 沈秀将, 林毅焌. UHPC单轴拉伸试验狗骨试件优化设计[J]. 工程力学, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446
引用本文: 杨简, 陈宝春, 沈秀将, 林毅焌. UHPC单轴拉伸试验狗骨试件优化设计[J]. 工程力学, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446
YANG Jian, CHEN Bao-chun, SHEN Xiu-jiang, LIN Yi-jun. THE OPTIMIZED DESIGN OF DOG-BONES FOR TENSILE TEST OF ULTRA-HIGH PERFORMANCE CONCRETE[J]. Engineering Mechanics, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446
Citation: YANG Jian, CHEN Bao-chun, SHEN Xiu-jiang, LIN Yi-jun. THE OPTIMIZED DESIGN OF DOG-BONES FOR TENSILE TEST OF ULTRA-HIGH PERFORMANCE CONCRETE[J]. Engineering Mechanics, 2018, 35(10): 37-46,55. doi: 10.6052/j.issn.1000-4750.2017.06.0446
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