论文部分内容阅读
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。
Multi-ribbed composite wall structure is developed in recent years, a new type of building structural system. As the main load-bearing component of the structure, the multi-ribbed composite wall is composed of dense reinforced concrete rib, rib column and light block embedded in it. The material is complex and the elastic constant can not be easily determined. In this paper, the structural analysis of the elastic phase of the multi-ribbed composite wall by means of the micro-mechanics finite element method is carried out to solve some problems in the macroscopic effective elastic modulus of the multi-ribbed composite wall, including the selection of representative volume units, The application of boundary conditions and other issues were discussed. The mesomechanical finite element model suitable for multi-ribbed composite wall was established. The numerical simulation and experimental results were compared and analyzed. The results show that for the calculation of macro-effective elastic modulus of multi-ribbed composite wall, the mesomechanical finite element model has higher accuracy and applicability than the traditional calculation model.