PVA－ECC纤维混凝土剪力墙抗震性能分析

摘要

通过大型有限元软件ABAQUS建立PVA －ECC纤维混凝土剪力墙构件模型，合理选取混凝土材料的损伤塑性模型，对构件拟静力抗震试验进行模拟分析，推演加载全过程。分析结果与真实试验结果比对，足够说明建立的有限元模型能够准确反映实际工况，具有较高的精度。在此基础上，通过变参数模拟分析了剪力墙抗震性能的四个重要影响参数：ECC充填区高度、PV A －ECC材料强度等级、轴压比以及剪跨比。最后提出了控制剪力墙延性能力的参数取值建议以提供设计人员参考，具有重要的应用价值。%PVA - ECC fiber reinforced concrete shear wall element model was built through the finite element software ABAQUS ,and concrete damage plasticity model was reasonably selected to simulate and analyze component pseudo static seis‐mic test ,inferring the loading process .The analysis results are compared with the real test results ,which show that the finite element model can accurately reflect the actual working conditions and has a high precision .On this basis ,the four important parameters of the seismic performance of the shear wall are simulated and analyzed by means of varying parameters :the height of the ECC filling zone ,the strength grade of the PVA -ECC material ,the axial compression ratio and the shear span ratio . Finally ,it is proposed that the parameter value of the control shear wall ductility capability is supposed to provide a reference for designers ,which has important application value .