姚谦峰, 张 亮, 刘 佩. 密肋复合墙体宏观有效弹性模量的细观力学有限元分析[J]. 工程力学, 2009, 26(4): 139-143.
引用本文: 姚谦峰, 张 亮, 刘 佩. 密肋复合墙体宏观有效弹性模量的细观力学有限元分析[J]. 工程力学, 2009, 26(4): 139-143.
YAO Qian-feng, ZHANG Liang, LIU Pei. MICRO-MECHANICS FINITE ELEMENT ANALYSIS OF EFFECTIVE ELASTIC MODULI OF MULTI-RIBBED SLAB WALL[J]. Engineering Mechanics, 2009, 26(4): 139-143.
Citation: YAO Qian-feng, ZHANG Liang, LIU Pei. MICRO-MECHANICS FINITE ELEMENT ANALYSIS OF EFFECTIVE ELASTIC MODULI OF MULTI-RIBBED SLAB WALL[J]. Engineering Mechanics, 2009, 26(4): 139-143.

密肋复合墙体宏观有效弹性模量的细观力学有限元分析

MICRO-MECHANICS FINITE ELEMENT ANALYSIS OF EFFECTIVE ELASTIC MODULI OF MULTI-RIBBED SLAB WALL

  • 摘要: 密肋复合墙结构是近年来发展的一种新型建筑结构体系。作为结构的主要承力构件——密肋复合墙体是由密布的钢筋混凝土肋梁、肋柱及嵌固于其中的轻质砌块构成,其材性复杂,弹性常数不易确定。该文提出用细观力学有限元法对密肋复合墙体的弹性阶段进行结构分析,就求解密肋复合墙体宏观有效弹性模量中的若干问题,主要包括代表性体积单元的选取以及所施加边界条件的确定等问题进行了探讨,建立适用于密肋复合墙体的细观力学有限元模型,通过数值模拟与试验结果进行对比分析。研究结果表明:对于密肋复合墙体宏观有效弹性模量的计算,采用细观力学有限元模型比传统的计算模型具有更高的精度和适用性。

     

    Abstract: The multi-ribbed composite wall structure (MRCS) is a new structural system developed in recent years. As the main bearing member of MRCS, the multi-ribbed composite wall (MRCW) is composed of reinforced concrete ribbed-beams, ribbed-columns and light blocks. Material properties of MRCW are complex and elastic constants of MRCW are difficult to define. A micro-mechanics finite element method is proposed to analyze MRCW in the elastic stage in this paper. Selection of representative volume elements and boundary conditions, which are main problems in the solution process of effective elastic moduli of MRCW, are discussed. A micromechanics model suitable for MRCW is presented. Finally numerical and experimental results are compared. The results show that the micro-mechanics finite element model is more accurate and more applicable than the traditional model for calculating effective elastic moduli of MRSW.

     

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