摘要
为了深入了解构造柱对蒸压粉煤灰多孔砖墙体受力性能的影响,通过对6片蒸压粉煤灰多孔砖墙与1片烧结多孔砖对比墙的低周反复荷载试验,系统研究了蒸压粉煤灰多孔砖墙体的破坏特征、承载能力、耗能能力、滞回特征及刚度退化等抗震性能。试验结果表明:构造柱对墙体的抗震性能产生显著影响,构造柱墙体耗能能力远大于无构造柱墙体,三构造柱墙体耗能能力大于两构造柱墙体;竖向压力对墙体的水平承载力影响较大,随着竖向压应力加大,墙体的抗剪强度提高,但破坏脆性加大。基于试验结果,提出了地震作用下带构造柱的蒸压粉煤灰多孔砖墙体的骨架曲线和抗剪承载能力计算方法,计算值与试验结果吻合较好。
In order to understand the mechanical properties of the autoclaved fly ash perforated brick, the pseudo-static tests about 6 autoclaved fly ash perforated brick walls and 1 fired perforated brick wall was concluded. Theseismic performance of walls about failure pattern, hysteresis curve, stiffness, ductility, skeleton curve and shearstrength has been researched systematically. The tests indicate that the failure pattern of autoclaved fly ash perfora-ted brick walls is different from the fired performed brick walls. The constructional column has a material impact onthe seismic performance of the wall. The energy dissipating capability of the walls with constructional columns is su-perior to the walls without constructional columns, and the wall with three constructional columns is superior to thewall with two constructional columns. The vertical pressure has a huge influence on the horizontal bearing capacity.The shearing strength of the walls increase significantly by the growth of the vertical pressure, but the brittle failureis occurred on the wall. According to the consequence of the test, the skeleton curve and new formulae for theshearing strength of the autoclaved fly ash perforated brick walls was deduced under the seismic action, dovetailingto the consequence of the test.
出处
《地震工程与工程振动》
CSCD
北大核心
2016年第5期116-125,共10页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(51308556)~~
关键词
蒸压粉煤灰多孔砖
构造柱
低周反复试验
抗震性能
承载力计算
autoclaved fly ash perforated brick
constructional column
pseudo-static test
seismic performance
bearing strength
