Based on the research of composite walls at home and abroad, a construction method of continuous opening of the insulation layer in the specimen is proposed. In the edge component of the composite wall, the insulation layer should be thinned appropriately, the concrete on both sides should be thickened correspondingly, and U-shaped reinforcement should be used instead of stirrup. To study its axial compression test performance, five 1/2 scale composite shear wall specimens are tested under axial compression, including three composite wall specimens and two solid wall contrast specimens. The failure mode, load-bearing performance, deformation performance, and the collaborative work performance of wall are analyzed. The results show that the failure characteristics of the composite shear wall are similar to those of the solid wall, with splitting cracks at the corners and inverted triangular conical splitting at the top of the wall along the wall height direction, with no obvious bulging in the middle of the wall. The tie action of the ribs makes the concrete walls on both sides of the composite shear wall have good integrity and cooperative performance; the installation of the thermal insulation layer increases the overall thickness of the wall, improves the stability of the composite wall, and makes the composite wall axially compressed. The bearing capacity is not significantly reduced compared to the solid walls. Finally, according to the test results, the calculation formula of axial compression bearing capacity of composite shear wall is given, which provides the basis for the formulation of the code and engineering application.

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复合剪力墙保温层轴向压缩试验研究

在国内外复合墙体研究的基础上，提出了试件内保温层连续开孔的施工方法。复合墙体边缘构件应适当减薄保温层，两侧混凝土相应加厚，用U形钢筋代替箍筋。为研究其轴压试验性能，对5个1/2比例复合剪力墙试件进行轴压试验，包括3个复合墙试件和2个实心墙对比试件。分析了墙体的破坏模式、承载性能、变形性能和协同工作性能。结果表明，复合剪力墙的破坏特征与实体墙相似，墙角处有劈裂裂缝，墙顶沿墙高方向有倒三角锥形劈裂，墙中部无明显凸起。加强筋的拉筋作用使组合剪力墙两侧的混凝土墙体具有良好的整体性和协同性；保温层的安装增加了墙体的整体厚度，提高了复合墙体的稳定性，并使复合墙体轴向受压。与实心墙相比，承载力没有明显降低。最后，根据试验结果，给出了组合剪力墙轴压承载力计算公式，为规范的制定和工程应用提供了依据。