| 引气量对混凝土力学性质影响的研究 |
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| 引用本文： | 肖建强,夏晓舟,章青.引气量对混凝土力学性质影响的研究[J].武汉理工大学学报,2011(5):134-136,146. |
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| 作者姓名： | 肖建强 夏晓舟 章青 |
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| 作者单位： | 河海大学工程力学系;南京工程学院建筑工程学院;广东工业大学建设学院; |
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| 基金项目： | 国家自然科学基金(10972072;50679022) |
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| 摘 要： | 采用H-S上界研究了含气量对混凝土弹性模量的削弱影响规律;假定混凝土基体服从D-P屈服准则,通过引入能量密度支函数概念,并构造其函数逼近序列以解决其在气孔边界不可导的问题,并通过定义在代表性体积单元上序列粘塑性问题的解获得屈服面上的宏观应力,最后导出了引气混凝土的宏观D-P屈服准则,并通过它研究了含气量对混凝土宏观摩擦系数和宏观膨胀系数的影响。
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| 关 键 词： | 引气混凝土 有效模量 有效势能 能量密度支函数 |
Investigation on the Influence of the Air-entrained Content on the Mechanical Properties of Concrete |
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| XIAO Jian-qiang,XIA Xiao-zhou,ZHANG Qing.Investigation on the Influence of the Air-entrained Content on the Mechanical Properties of Concrete[J].Journal of Wuhan University of Technology,2011(5):134-136,146. |
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| Authors: | XIAO Jian-qiang XIA Xiao-zhou ZHANG Qing |
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| Affiliation: | XIAO Jian-qiang1,2,XIA Xiao-zhou1,3,ZHANG Qing1(1.Department of Engineering Mechanics,Hohai University,Nanjing 210098,China,2.Department of Civil Engineering,Nanjing Institute of Technology,Nanjing 211167,3.Institute of Construct,Guangdong University of Technology,Guangzhou 510006,China) |
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| Abstract: | The decreasing influence of the air content on the Young's modulus of the concrete is studied by H-S estimation method.Basing on the assumption of the D-P yield criterion of concrete matrix,the macroscopic stress states on the yield surface can be theoretically obtained from the solution to a sequence of viscoplastic problems defined on the representative volume element.Introducing the energy density supporting function and constructing the approximating function sequence solve the non derivable problem on ... |
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| Keywords: | air-entrained concrete effective modulus effective potential energy energy density support function |
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