不同构造竖缝的装配式空心模板剪力墙抗震性能试验研究

通过1个钢筋混凝土剪力墙和4个装配式空心模板剪力墙的拟静力试验，研究了剪力墙的抗震性能及竖向接缝构造对墙体受力性能的影响。试验结果表明，装配式空心模板剪力墙沿内部接缝出现宏观竖向裂缝，经历了整截面墙受力到墙柱组合体受力的过程，可防止脆性破坏，较钢筋混凝土剪力墙变形能力显著增强、受剪承载力降低；峰值荷载前沿竖向接缝两侧的相对变形将墙体分割为分缝剪力墙，提高了延性和耗能能力，降低了受剪承载力；竖向接缝处采用木板条补替部分混凝土可改善墙体的受力性能；按照强弯弱剪设计的墙体，水平接缝对墙体受力性能的影响可以忽略；装配式空心模板剪力墙的竖向接缝受力性能良好，可用于实际工程。

Experimental study on seismic behaviors of assembled monolithicconcrete shear walls built with precast two-way hollow slabs with various details

To study the mechanical behaviors of assembled monolithic concrete shear walls built with precast two-way hollow slabs with various details of vertical joint, four new type shear walls and one reinforced concrete shear wall were quasi-statically tested under low cyclic lateral loading to analyze the effects of vertical joints, and the various details of vertical joint. The study shows that new type shear walls have adequate deformability, in terms of their failure characteristic and behaviors from integral wall to the combination of wall and columns after the appearance of vertical cracks along the inner joints. The brittle shear failure can be avoided, but the shear capacity is reduced．The test results also show that the wall is evolved to slit wall due to the relative deformation along vertical joint, so the ductility and energy dissipation capacity are improved. The deformability can be increased by replacing the concrete with wood lath in the vertical joint. The effect of horizontal joints to the behavior of the walls designed by the principle of ‘strong shear weak flexure’ can be ignored. Research results indicate that the vertical joint has good behavior, which can be applied to practical engineering.