保温砌模现浇网格墙建筑结构设计方法

Structural Design Methods of Buildings with cast-in-situ RC grillage shear walls formed by Insulation Hollow Blocks

介绍了8个剪跨比不大于1.0和8个剪跨比为1.96￣3.06的钢筋混凝土网格剪力墙试件在轴压力和往复水平力作用下的试验,结果表明,网格墙的破坏形态为横肢剪切破坏和墙端竖肢混凝土压碎破坏,耗能构件多且分散,塑性变形能力大。有限元分析和/或试验结果表明,可以将网格墙等效为普通钢筋混凝土剪力墙,计算其抗侧刚度,按现行规范计算其受剪承载力和偏心受压承载力。

Experimental work on 16 reinforced concrete grillage shear wall specimens is introduced.Among them 8 specimens have the shear span ratios not larger than 1.0 and 8 specimens have shear span ratios of 1.96 to 3.06. The experiment was performed under a constant vertical load and cyclic lateral loads. The results show that the failure pattern of the grillage shear walls is the shear failure of horizontal elements and concrete crush at the bottom of the end vertical elements. Grillage shear walls have a large number of energy dissipation elements and have large plastic deformation capacity.Results of finite element analysis and/or test show that the grillage shear wall can be equivalent as the reinforced concrete shear wall, to calculate its lateral stiffness, its shear strength and its flexural strength under compressive force.