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,材料力学参数不易确定。为了确定轻质砌块及钢筋混凝土肋对墙体抗震性能的贡献,取出单个框格作为研究对象进行试验研究。在分析试验数据的基础上,提出用细观力学有限元法对密肋复合墙体的框格进行弹塑性结构分析,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,结果表明:填充材料强度和混凝土肋的截面特性对框格承载能力和变形性能影响较大。
Multi-ribbed composite wall structure is developed in recent years, a new type of building structural system. As the main load-bearing structure 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 mechanical parameters of the material are not easy to be determined. In order to determine the contribution of lightweight block and reinforced concrete rib to the seismic performance of the wall, a single grid was taken as the research object for the experimental study. Based on the analysis of the experimental data, a mesomechanical finite element method is proposed to analyze the elasto-plastic structure of the sash of the multi-ribbed composite wall and establish the mesomechanical finite element model suitable for the multi-ribbed composite wall. The results of numerical simulation and test results show that the strength of filled material and the cross-section of concrete rib affect the load-bearing capacity and deformation performance of sash.