工程力学 ›› 2019, Vol. 36 ›› Issue (9): 188-196.doi: 10.6052/j.issn.1000-4750.2018.08.0468

• 土木工程学科 • 上一篇    下一篇

成层混凝土的剪切强度和Ⅱ型断裂韧度

覃茜, 徐千军   

  1. 清华大学水沙科学与水利水电工程国家重点实验室, 北京 100084
  • 收稿日期:2018-08-30 修回日期:2018-11-15 出版日期:2019-09-25 发布日期:2019-04-16
  • 通讯作者: 徐千军(1967-),男,上海人,教授,博士,博导,主要从事水工结构和岩石力学研究(E-mail:qxu@mail.tsinghua.edu.cn). E-mail:qxu@mail.tsinghua.edu.cn
  • 作者简介:覃茜(1993-),女,湖北荆州,博士生,主要从事混凝土材料强度方面的研究(E-mail:qinxi93@163.com).
  • 基金资助:
    国家重点研发计划课题项目(2017YFC0804602);国家自然科学基金项目(51839007&51879141);水沙科学与水利水电工程国家重点实验室自主科研课题项目(2019-KY-03)

THE SHEAR STRENGTH AND MODE II FRACTURE TOUGHNESS OF LAYERED CONCRETE

QIN Xi, XU Qian-jun   

  1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2018-08-30 Revised:2018-11-15 Online:2019-09-25 Published:2019-04-16

摘要: 该文对成层混凝土的层间结合性能进行研究,通过直接剪切试验和双边缺口单边加载断裂试验测得混凝土层间的抗剪强度参数和Ⅱ型断裂韧度,研究了混凝土浇筑的层间间隔时间对成层混凝土层间结合性能的影响。试验结果表明:Ⅱ型断裂韧度Kc与粘聚力c具有较好的线性相关性,而其与摩擦系数f不具有明显相关性。同时根据Ⅱ型断裂的定义假定断裂时满足摩尔库伦准则,推导出Kcc具有线性相关性。因此Ⅱ型断裂韧度可根据粘聚力直接估计出,避免了进行复杂而难以控制试验要素的Ⅱ型断裂试验。此方法为成层混凝土日后的断裂力学研究,提供了可参考的参数。

关键词: 成层混凝土, 抗剪强度, II型断裂韧度, 粘聚力, 摩擦系数

Abstract: The bond characteristics of layered concrete was studied by direct shear tests and double-edge notched single-edge compressing tests (DNSCT) to obtain the parameters of shear strength and mode Ⅱ fracture toughness. The influence of the pouring interval of two layers on the bond characteristics was researched. A linear relation between the cohesive and the mode Ⅱ fracture toughness was found, while there is no remarkable relation between the friction coefficient and the mode Ⅱ fracture toughness. According to the definition of the mode Ⅱ fracture, Mohr-Coulomb criterion was used to judge the mode Ⅱ fracture. A linear relation between the cohesive and the mode Ⅱ fracture toughness was derived theoretically. The mode Ⅱ fracture toughness could be estimated based on the cohesive strength so that the mode Ⅱ fracture tests which are complex and uncontrollable could be avoided. This research can provide referable parameters for the fracture mechanics study of layered concrete.

Key words: layered concrete, shear strength, mode II fracture toughness, cohesive strength, friction coefficient

中图分类号: 

  • TV311
[1] 田育功. 碾压混凝土快速筑坝技术[M]. 北京:中国水利水电出版社, 2010. Tian Yugong. Rapid damming technology for roller compacted concrete[M]. Beijing:China Water & Power Press, 2010. (in Chinese)
[2] Kokubu K, Cabrera J G, Ueno A. Compaction properties of roller compacted concrete[J]. Cement and Concrete Composites, 1996, 18(2):109-117.
[3] Qian P, Xu Q. Experimental investigation on properties of interface between concrete layers[J]. Construction and Building Materials, 2018, 174:120-129.
[4] 王迎春. 碾压混凝土层面结合特性和质量标准研究[D]. 浙江:浙江大学, 2007. Wang Yingchun, Study on specific characteristics and qualification requirements of life joints in roller compacted concrete[D]. Zhejiang:Zhejiang University, 2007. (in Chinese)
[5] 周浪, 陈国胜, 王晓军. 彭水水电站碾压混凝土原位抗剪试验研究[J]. 长江科学院院报, 2009, 26(8):76-79. Zhou Lang, Chen Guosheng, Wang Xiaojun. Reseach on In-situ shear test of RCC for Pengshui hydropower station[J]. Journal of Yangtze River Scientific Research Institute, 2009, 26(8):76-79. (in Chinese)
[6] 宋兴君. 向家坝水电站碾压混凝土力学性能原位试验研究[J]. 人民长江, 2015, 46(2):98-100. Song Xingjun. Test study on physical and mechanical properties of RCC in Xiangjiaba hydropower station[J]. Yangtze River, 2015, 46(2):98-100. (in Chinese)
[7] 袁从华, 周健, 闵泓, 等. 碾压混凝土抗剪试验研究[J]. 土工基础, 2005, 19(5):68-71. Yuan Conghua, Zhou Jian, Min Hong, et al. An experiment study of shearing strength of roller compacted concrete(RCC)[J]. Soil Engineering and Foundation, 2005, 19(5):68-71. (in Chinese)
[8] 林长农, 金双全, 涂传林. 龙滩有层面碾压混凝土的试验研究[J]. 水力发电学报, 2001(3):117-129. Ling Changnong, Jin Shuangquan, Tu Chuanlin. Experiment researches on RCC with layer surfaces for Longtan Project[J]. Journal of Hydroelectric Engineering, 2001(3):117-129. (in Chinese)
[9] 简政, 张浩博, 黄松梅. 碾压混凝土断裂性能研究[J]. 西安理工大学学报, 1998, 14(2):152-155 Jian Zheng, Zhang Haobo, Huang Songmei. Research on fracture property rolled concrete[J]. Journal of Xi'an University of Technology, 1998, 14(2):152-155. (in Chinese)
[10] 张林, 徐进, 陈新, 等. 碾压混凝土断裂试验研究[J]. 水利学报, 2001(5):45-49. Zhang lin, Xu Jin, Chen Xin, et al. Experimental study on fracture of roller compacted concrete[J]. Journal of Hydraulic Engineering, 2001(5):45-49. (in Chinese)
[11] 黄志强. 碾压混凝土诱导缝与层面断裂性能的试验和数值模拟研究[D]. 大连:大连理工大学, 2006. Huang Zhiqiang. Study on induced joints and fracture property of layer surface in RCC with test and numerical modeling[D]. Dalian:Dalian University of Technology, 2006. (in Chinese)
[12] 任利, 谢和平, 谢凌志, 等. 基于断裂力学的裂隙岩体强度分析初探[J].工程力学, 2013, 30(2):156-162,168. Ren Li, Xie Heping, Xie Lingzhi, et al. Preliminary study on strength of cracked rock specimen based on fracture mechanics[J]. Engineering Mechanics, 2013, 30(2):156-162, 168(in Chinese)
[13] 陈峰, 郑建岚. 自密实混凝土与老混凝土粘结面的抗剪试验研究[J]. 福州大学学报:自然科学版, 2005, 33(4):509-512. Chen Feng, Zheng Jianlan. Research on the shear behavior of the adhesion of self-compacting concrete and old concrete[J]. Journal of Fuzhou University (Natural Science Edition), 2005, 33(4):509-512. (in Chinese)
[14] 范亮. 先后浇混凝土界面抗剪性能研究[D]. 重庆:重庆交通学院, 2004. Fan Liang. Study on the shear behaviors of pre-casting and post-casting concrete interface[J]. Chongqing:Chongqing Jiaotong University, 2004. (in Chinese)
[15] 徐世烺. 混凝土断裂力学[M]. 北京:科学出版社, 2011. Xu Shilang. Fracture mechanics of concrete[M]. Beijing:Science Press, 2011. (in Chinese)
[16] Arrea M, Ingraffea A R. Mixed-mode crack propagation in mortar and concrete[R]. New York:Cornell University, 1981:81-13.
[17] Bažant Z P, Pferffer P A. Shear fracture test of concrete[J]. Materials and Structure, 1986, 110(19):111-121.
[18] 郝圣旺, 李慧剑, 黎振兹, 等. 紧凑四点剪切砼Ⅱ型断裂实验研究与数值分析[J]. 工程力学, 2003, 20(2):138-141. Hai Shengwang, Li Huijian, Ni Zhenzi, et al. A Combined Experimental and numerical investigation of mode-Ⅱ fracture of compact four-point-shear concrete specimens[J]. Engineering Mechanics, 2003, 20(2):138-141. (in Chinese)
[19] Watkins J. Fracture toughness test for soil-cement samples in Mode Ⅱ[J]. International Journal of Fracture, 1983, 23(4):135-138.
[20] Backers, T, Stephansson O, Rybacki E. Rock fracture toughness testing in Mode Ⅱ-punch-through shear test[J]. International Journal of Rock Mechanics and Mining Sciences, 2002, 39(6):755-769.
[21] Jia Z, Castro-Montero A, Shah S P. Observation of mixed mode fracture with center notched disk specimens[J]. Cement and Concrete Research, 1996, 26(1):125-137.
[22] Wei M D, Dai F, Xu N W, et al. Fracture prediction of rocks under mode I and mode Ⅱ loading using the generalized maximum tangential strain criterion[J]. Engineering Fracture Mechanics, 2017, 186:21-38.
[23] 王桂尧,孙宗颀,徐纪成. 岩石压剪断裂机理及强度准则的探讨[J]. 岩土工程学报, 1996, 18(4):68-74. Wang Guiyao, Sun Zongqi, Xu Jicheng. Study of compress shear fracture mechanism and strength criterion[J]. Chinese Journal of Geotechnical Engineering, 1996, 18(4):68-74. (in Chinese)
[24] Reinhardlt H W, Ošbolt J, Xu S L, et al. Shear of structural concrete members and pure mode Ⅱ testing[J]. Advanced Cement Based Materials, 1997, 5(3):75-85.
[25] 胡亮. 混凝土Ⅱ 型断裂过程试验研究与尺寸效应分析[D]. 南京:南京水利科学研究院, 2014. Hu Liang. Experimental research and analysis of size effect on model Ⅱ fracture process of concrete[D]. Nanjing:Nanjing Hydraulic Research Institute, 2014. (in Chinese)
[26] 贾金生, 刘中伟, 冯炜, 等. 胶凝砂砾石抗剪强度试验研究[C]//成都:第七届碾压混凝土坝国际研讨会论文, 2015. Jia Jinsheng, Liu Zhongwei, Feng Wei, et al. The experiment research of shear strength of cemented sand and gravel[C]//Chengdu:Proceedings of the 7th International Symposium on Roller Compacted Concrete Dams, 2015. (in Chinese)
[27] SL352-2006, 水工混凝土试验规程[S]. 北京:中国水利水电出版社, 2006. SL352-2006, Test code for hydraulic concrete[S]. Beijing:China Power & Water Press, 2006. (in Chinese)
[28] 邓宗才, 卢云斌, 李宗利, 等. 混凝土复合型裂缝最大拉应变断裂准则[J]. 西北农业大学学报, 1999, 27(1):43-46. Deng Zongcai, Lu Yunbin, Li Zongli, et al. The maximum circumferential strain fracture criterion for mixed model of concrete[J]. Journal of Northwest A&F University, 1999, 27(1):43-46. (in Chinese)
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