再生仿古建砖夹心墙体抗震性能试验研究

Test Research on Seismic Behavior of Recycled Archaized Brick Cavity Wall

本文对3片再生仿古建砖夹心墙体进行了低周反复荷载试验,研究了采用拉结砖和拉结筋两种不同拉结方式的再生砖夹心墙体的破坏形态、承载能力及抗震性能。试验结果表明,拉结砖拉结使内外叶墙在墙体开裂前具有良好的整体性,但是开裂后容易导致拉结砖断裂;拉结筋拉结使内外叶墙在墙体开裂前出现变形不协调,但是开裂后整体性较好;这两种不同的拉结方式对夹心墙承载力影响相似;通过合理地布置拉结砖的数量,拉结砖拉结可以和拉结筋拉结在夹心墙抗震性能方面达到相同的效果。

In this article,three pieces of recycled archaized brick cavity walls are tested under low frequency cyclic loads,the failure pattern,bearing capacity and seismic behavior of the recycled-brick interlayer walls which adopted bonding bricks and binding steel bars are studied. The test results indicate that the bonding capacity of the recycled brick enables outer and inner cavity walls to have favorable integrity before the cracks,and tends to cause the break of the bonding bricks after the cracks. In contrary,the bonding capacity of binding steel bars causes the deformation incompatibility of outer and inner cavity walls before the cracks,and the integrity of walls tends to be more favorable after the cracks. Both the bonding methods have similar effect on the bearing capacity of the cavity walls,and both the bonding bricks and the binding steel bars can achieve same seismic behavior in cavity walls through reasonable arrangement of the bonding bricks.