玻化微珠保温混凝土中高剪力墙承载力试验及分析

Experimental Study on Bearing Capacity of Thermal Insulation Glazed Hollow Beadmid-rise Concrete Shear Walls

玻化微珠保温混凝土是一种通过加入新型无机绿色保温材料——玻化微珠来降低导热系数,提高保温性能,最终达到保温承重一体化的高性能混凝土。本文通过对2片不同剪跨比的玻化微珠保温混凝土中高剪力墙进行拟静力试验研究与承载力理论计算,对比分析其破坏形态、承载力、特征位移、割线刚度以及滞回耗能等特性,确定新型墙体的承载力计算公式。试验及分析结果表明:玻化微珠保温混凝土中高剪力墙表现出较好的延性和耗能能力;增大剪跨比对提高玻化微珠保温混凝土中高剪力墙的延性以及增强其耗能能力具有较明显的效果;普通剪力墙承载力计算公式同样适用于玻化微珠保温混凝土中高剪力墙,在设计中可参照普通混凝土剪力墙进行截面设计。

Thermal insulation glazed hollow bead concrete is a kind of high-performance concrete which improves the energy conservation performance by adding the new-type inorganic energy conservation material-glazed hollow bead to lower the coefficient of thermal conductivity and eventually achieving energy conservation and bearing capacity integration. Based on quasi-static test and the calculation of bearing capacity theory, the destructed behaviors and grades, bearing capacity, displacement characteristics, the secant stiffness and hysteretic energy dissipation of 2 thermal insulation glazed hollow bead mid-rise concrete shear walls under different shear span ratios are compared, and the bearing capacity calculation formula of the new wall is determined. The testing and analysis results show that： thermal insulation glazed hollow bead mid-rise concrete shear wall indicates good ductility and energy dissipation capability; increasing the shear span ratio has obvious effects on the improvement of thermal insulation glazed hollow bead mid-rise concrete shear wall ductility and energy dissipation capacity; since bearing capacity calculation formula of ordinary shear wall applies to thermal insulation glazed hollow beard mid-rise concrete shear wall as well, ordinary concrete shear wall cross section design can be referenced.