秸秆草砖窗间墙抗震性能的试验研究

Seismic Performance of Straw Bale Wall between Windows

为研究秸秆草砖窗间墙的抗震性能,本研究对外涂水泥砂浆的水稻秸秆草砖窗间墙进行了拟静力试验,研究与分析了其在水平低周往复荷载作用下的受力性能、破坏模式、延性和耗能能力等,结果表明:外涂水泥砂浆草砖墙的滞回曲线饱满,能量耗散系数和等效粘滞阻尼系数较大,说明外涂水泥砂浆的秸秆草砖窗间墙具有较好的抗震性能;同时还发现草砖窗间墙具有较好的延性,其受破坏的过程缓慢,破坏前有明显的征兆,因而可采用偏小的计算安全系数或可靠度.

In the report, the quasi-static test was performed on seismic performance of straw bale wall with ce- ment mortar between windows. The mechanical behaviour, failuar mode, ductility and energy dissipation capaci- ty of straw bale wall between windows to low cycle level load were studied. The results showed that hysteretic curve of straw bale wall with cement motar between windows was plum, energy dissipation coefficient and equiva- lent viscous damping coefficient were larger, which suggested that the straw bale wall with cement motar between windows has good seismic and ductility. Because that the failure process of wall was low, and which had signifi- cant symptom before damage, smaller calculating salty factor or reliability can be used.