Composite shear walls are widely used in high-rise buildings because of their high bearing capacity. To improve the bearing capacity of ordinary shear walls, restraining elements are usually installed at both boundaries or within the wall body. In this article, two different restraining elements, namely, a rectangular steel tube and a column-type reinforcement (the whole wall body was restrained by segmented stirrups and tied by diagonal bars), were applied to the boundary frame and wall body of the shear wall either jointly or separately. A new type of steel-concrete composite shear wall, referred to as a composite shear wall incorporating a concrete-filled steel tube boundary and column-type reinforced wall, was proposed. In addition, three specimens with different restraining elements, namely, a column-type reinforced shear wall, a concrete-filled steel tube boundary shear wall and an ordinary reinforced concrete shear wall, were presented for comparison. The influences of the two different restraining elements on the seismic performance and bearing capacity of the shear walls were analyzed from four perspectives of failure mode, hysteresis behavior, stiffness and residual deformation, and the equivalent lateral pressures of the two restraining elements were calculated. Based on the plane-section assumption, expressions for the crack, yield, peak and ultimate bearing capacities were derived, and the effects of the two restraining elements on the peak and ultimate bearing capacities were considered. The results show that these two restraining elements significantly improved the bearing capacity of the shear wall specimens, and the concrete-filled steel tube restraining element was more effective than the column-type reinforced restraining element. Finally, the calculated values of the bearing capacity of the four different restraining elements of the shear wall specimens proposed in this article were in good agreement with the experimental values.

中文翻译：

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钢管混凝土边界与柱式钢筋墙组合剪力墙承载力

复合剪力墙因其承载力高而被广泛应用于高层建筑中。为提高普通剪力墙的承载力，通常在边界两侧或墙体内安装约束构件。在本文中，剪力的边界框架和墙体应用了两种不同的约束元素，即矩形钢管和柱式钢筋（整个墙体用分段箍筋约束，并用斜杆系紧）。墙是联合或单独的。提出了一种新型钢-混凝土组合剪力墙，简称为钢管混凝土边界与柱式钢筋墙的组合剪力墙。此外，三个具有不同约束元素的试件，即柱式钢筋剪力墙，提出了钢管混凝土边界剪力墙和普通钢筋混凝土剪力墙进行比较。从破坏模式、滞后行为、刚度和残余变形四个角度分析了两种不同约束单元对剪力墙抗震性能和承载力的影响，并计算了两种约束单元的等效侧压力。基于平面截面假设，推导出裂纹、屈服、峰值和极限承载力的表达式，并考虑了两种约束元素对峰值和极限承载力的影响。结果表明，这两种约束元件显着提高了剪力墙试件的承载能力，钢管混凝土约束元件比柱式钢筋约束元件更有效。最后，本文提出的剪力墙试件四种不同约束单元的承载力计算值与试验值吻合较好。