砖混教学楼纵向窗间墙抗震性能试验研究

Experimental study on the seismic performance of longitudinal wall between windows of brick-concrete school building

通过5片砖混教学楼纵向窗间墙试件的拟静力试验,分别对配置不同尺寸和不同配筋率构造柱的窗间墙试件的破坏形态、滞回性能、变形能力等进行了试验分析。研究结果表明,构造柱的尺寸和配筋率对窗间墙的抗震性能影响较大,增大构造柱截面尺寸但保持较低的配筋率可显著改善窗间墙的抗震性能,但构造柱配筋增大到一定程度后反而会降低窗间墙的变形能力。因此,适度增大构造柱尺寸并合理控制配筋率是砖混教学楼纵向窗间墙抗震设计的关键。

Quasi-static tests on five specimens were conducted to investigate the seismic performance of longitudinal wall between windows of brick-concrete school building.The seismic performance of longitudinal wall between windows with different size and reinforcement ratio of structural column was investigated respectively,including damage characteristics,hysteresis behavior and deformation capacity of specimens.The results indicate that the section size and reinforcement ratio of structural column have significant effect on the seismic performance of specimens.Increasing the section size of structural column can improve the seismic performance of longitudinal wall between windows significantly.However,increasing reinforcement ratio of structural column to a certain extent will decrease deformation capacity of longitudinal wall between windows.Therefore,properly increasing the section size of structural column and reasonably controlling the reinforcement ratio are crucial important in the seismic design of longitudinal wall between windows of brick-concrete school building.