小剪跨比带缝剪力墙非线性分析

Non-linear analysis on small shear-span ratio slitted shear wall structure

提出一种新型保温承重结构体系——免拆保温墙模带缝剪力墙体系.运用ANSYS三维有限元模型对小剪跨比带缝剪力墙的非线性性能进行了模拟试验研究.通过建立合理的力学模型,着重研究轴压比、混凝土强度对免拆模复合带缝剪力墙性能的影响.分析结果表明轴压变化对其承载力及其延性系数有明显影响,混凝土等级的提高使屈服荷载与极限荷载比值接近,屈强比较大,安全储备较低,且延性系数也有很大降低.

A kind of new structure-slitted shear wall structure with heat preservation formwork was introduced. The finite element analysis software ANSYS was used to analyze the non-linear characteristics of the small shear-span ratio slitted shear wall. Based on the reasonable mechanics models the paper emphatically analyzed the influence on the performance of the slitted shear wall about the axial pressure ratio, concrete strength. The results showed that the change of the axial pressure has obvious influence on its supporting capacity and the ductility coefficient, the enhancement of the concrete strength caused the submit load and the limit load ratio approaches, bends are big, and the safety margin is lower, the ductility coefficient is greatly reduced. The conclusion may be used more in spreading and designing for evaluating the performance of the new structure.