国内节能型剪力墙技术研究和应用现状分析

节能型剪力墙体系主要由承重-保温型结构材料构成,轻骨料混凝土是应用较多的承重-保温型结构材料。本文介绍了常用的一些轻骨料混凝土的材料性能和力学性能,如抗压强度、导热系数及应力-应变本构关系等。通过对相关文献结果的比较分析得出,轻骨料混凝土剪力墙在自身热工性能上有明显改善。力学性能方面,在承载力满足设计要求的前提下,延性性能优于普通混凝土剪力墙,拥有较高的抗震安全储备。同时介绍了免拆模复合剪力墙体系和新型夹心剪力墙体系,论述了它们的热工性能和构造组成。通过对比分析,得出轻骨料混凝土是节能型剪力墙体系中具有广阔应用前景的承重-保温型材料。

Application Status and Technology Research of Energy-efficient Shear Wall in China

Energy-efficient shear wall system is composed of load-bearing and thermal insulation concrete.Lightweight aggre-gate concrete is a kind of load-bearing and thermal insulation concrete with wide application.In this paper,the material properties and mechanical properties of lightweight aggregate concrete are introduced,such as compressive strength,thermal conductivity and stress-strain constitutive relation.Through the comparative analysis of the relevant literature,results show that lightweight aggregate concrete shear wall has improved significantly in thermal performance.In mechanical performance,under the premise that bearing ca-pacity meets the design requirements,the ductility of lightweight aggregate concrete shear wall is better than ordinary concrete shear wall and has a high seismic capability.This paper also introduces the complex shear wall structure with heat preservation formwork and the newly developed sandwich insulation wall,their thermal properties and wall structure are discussed.Through comparative analysis,it is concluded that lightweight aggregate concrete is a promising material in energy-efficient shear wall system.