开洞密肋复合墙体的受力性能研究

在课题组前期科研成果的基础上,通过对1/2模型开洞密肋复合墙体在水平单调荷载作用下的试验研究,并与标准未开洞密肋复合墙体进行对比分析,研究了开洞墙体的主要破坏特征;探讨开洞墙体的承载能力、刚度、变形能力、延性等受力性能;对开洞墙体进行钢筋应变分析;最后提出开洞复合墙体的刚度及受剪承载力的计算公式.试验及理论研究表明:开洞的密肋复合墙体的变形能力、延性好于标准不开洞密肋复合墙体,而刚度、承载力远远不及标准不开洞密肋复合墙体,设计时应加强外框柱和连梁的配筋以及墙板的竖向连接作用;钢筋应变分析表明外框柱、连梁对开洞墙体的受力性能贡献较大;提出的开洞墙体受剪承载力公式计算值比较接近试验值,适用于实际工程应用.

Analyses of mechanical behaviors of multi-ribbed composite wall with opening

Based on the previous studies of the subject and by researching on the test of a 1/2-scaled multi-ribbed composite wall with opening under monotone horizontal loading in contrast with one without opening,we are devoted to fulfilling the following points on the wall with opening in this paper: studying the main failure patterns;discussing the mechanical behaviors such as bearing capacity,rigidity,distortion capacity,ductility and so on;analyzing the strain;and finally the formulas of rigidity and shear-bearing capacity that.It can be concluded that: the distortion capacity and ductility of the wall with opening are better than those of the wall without opening,but the rigidity and shear-bearing capacity of the wall with opening are less than those of the wall without opening,so that the steel bars of ending columns and connecting beams of the wall with opening should be strengthened.Strain analyzing shows that the ending columns and connecting beams play a more important role in the wall with opening.The value of the shear-bearing capacity formula approximates to the experimental result,and can be applied to the practical engineering.