砌体灌芯率与灌芯位置对混凝土框架-配筋砌体混合结构性能影响

The effect of Masonry Grouting Rate and Grouting Position on the Performance of Concrete Frame-reinforced Masonry Hybrid Structure

结构中的配筋砌块砌体剪力墙主要分担水平方向的风荷载及地震作用,砌体墙的主要影响因素有:水平配筋率、砌体的抗剪强度、灌芯率与灌芯位置等。本文通过有限元模拟分析了灌芯率与灌芯位置在水平荷载作用下对框架、配筋砌体协同工作性能的影响。结果表明结构极限荷载随着灌芯率的增加呈线性增长,当灌芯率由0%增到100%时,砌体墙的极限荷载的增加率超过了50%。在灌芯率相同的情况下,灌芯位置分布匀称合理时,极限荷载的增加明显。

The reinforced block masonry shear wall in the structure mainly shares the horizontal wind load and seismic action.The main influencing factors of the masonry wall are:horizontal reinforcement ratio,masonry shear strength,grouting rate and Filling position,etc.This paper analyzes the influence of the grouting rate and the grouting position on the cooperative performance of the frame and reinforced masonry under horizontal load through finite element simulation.The results show that the structural ultimate load increases linearly with the increase of the grouting rate.When the pouring core rate increased from 0%to 100%,the increase rate of ultimate load of masonry wall is more than 50%.In the case of the same filling rate,when the filling position is well-balanced and reasonable,the ultimate load increases significantly.