新型钢丝网架混凝土夹心组合墙轴压力学性能研究

Axial Pressure Mechanical Properties of New Insulated Sandwich Concrete Wall Structures

钢丝网架混凝土夹心墙(ISCW)是一种新型保温结构一体化墙体结构,具有良好的工程应用和推广价值。为研究ISCW结构的轴压受力性能,对其开展了数值仿真分析与试验加载测试,对比二者分析结果,破坏模式与荷载-位移曲线均具有较好的一致性。在此基础上开展变参数有限元仿真分析,研究混凝土板厚、混凝土强度、钢丝间距、钢丝直径对ISCW受压承载力的影响,结果表明:轴心受压承载力随混凝土强度、钢丝直径及混凝土板厚的增大而增大,随钢丝间距的增大而减小。最终,依据本文所开展的试验和有限元分析结果,结合现有相关技术规范提出了ISCW轴心受压承载力计算公式,与有限元分析结果相比,其误差在15%以内。

Insulated sandwich concrete wall(ISCW)is a new type of integrated wall structure with insulation structure,which has good engineering application and popularization value.In order to study the axial compression performance of the ISCW structure,numerical simulation analysis and experimental loading test were carried out.Comparing the analysis results,the failure mode and load-displacement curve were in good consistency.On this basis,variable parameter finite element simulation analysis was carried out to study the effects of concrete plate thickness,concrete strength,wire spacing and wire diameter on the ISCW compression capacity.The results show that the axial compression capacity increases with the increase of concrete strength,wire diameter and concrete plate thickness,and decreases with the increase of wire spacing.Finally,according to the results of the test and finite element analysis in this paper,combined with the existing relevant technical specifications,the calculation formula of ISCW axial compression capacity is proposed.Compared with the results of finite element analysis,the error is less than 15%.