低强度空斗墙的受力性能试验研究
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摘要
通过3片墙体的抗压试验和10片墙体的水平低周反复荷载试验,研究了低强度空斗墙的抗压和抗震性能。在水平低周反复荷载试验中,比较了不同砂浆强度和砌筑方式的空斗墙的破坏形态、承载能力、变形能力、滞回特性、耗能能力等。试验结果表明,不同砌筑方式空斗墙的抗压承载力差异不大;低强度空斗墙抗震试验结果的随机性和离散性很大;低强度空斗墙的抗震性能明显差于相同条件的实心墙;砂浆强度和砌筑方式对空斗墙的抗震性能均有一定影响。采用已有的经验公式对空斗墙的抗压和抗剪承载力进行了计算,计算与试验结果基本吻合。
Three walls under compression and 10 walls under low frequency cyclic horizontal load were tested to study the compressive and earthquake resistant behavior of low strength cavity walls.By the low frequency cyclic horizontal load tests,the failure mode,ultimate strength,hysteresis loops,and energy dissipation of walls with different mortar strength and construction modes were analyzed.The experimental results showed that the difference between the compressive load capacities of the cavity wall and the solid wall was insignificant.The earthquake resistant behaviors of low strength cavity walls were random,but obviously weaker than that of solid wall.The mortar strength and construction modes had effect on the seismic behavior of low strength cavity walls.The compressive and shear load capacities of the cavity walls were calculated using the experiential formulas,and were similar with the experimental results.
Three walls under compression and 10 walls under low frequency cyclic horizontal load were tested to study the compressive and earthquake resistant behavior of low strength cavity walls.By the low frequency cyclic horizontal load tests,the failure mode,ultimate strength,hysteresis loops,and energy dissipation of walls with different mortar strength and construction modes were analyzed.The experimental results showed that the difference between the compressive load capacities of the cavity wall and the solid wall was insignificant.The earthquake resistant behaviors of low strength cavity walls were random,but obviously weaker than that of solid wall.The mortar strength and construction modes had effect on the seismic behavior of low strength cavity walls.The compressive and shear load capacities of the cavity walls were calculated using the experiential formulas,and were similar with the experimental results.
引文
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[11]GBJ 3-88砌体结构设计规范[S].
[12]骆万康,朱希诚,廖春盛.砖砌体剪压复合受力相关性与抗剪摩擦系数的取值[J].工程力学,1997(s1):249-257.
[2]葛学礼,朱立新,于文等.江西九江-瑞昌M5.7级地震空斗砖墙房屋震害分析[J].工程抗震与加固改造,2006,28(1):10-17.
[3]葛学礼,朱立新.浙江文成地震村镇空斗墙建筑震害分析[J].工程抗震与加固改造,2006,28(6):106-109.
[4]陆能源,吕宏远.空斗砖墙模型试验初步报告[J].华南工学院学报:自然科学版,1957(1):63-72.
[5]奉杰超,尚守平,刘沩,等.空斗墙墙片的伪静力试验研究[J].铁道科学与工程学报,2009,6(3):31-35.
[6]刘沩.高性能水泥复合砂浆钢筋网薄层(HPFL)加固农村民居空斗砌体抗震性能试验研究[D].长沙:湖南大学,2009.
[7]翁小平,王柏生.基于ANSYS的空斗墙片墙抗侧力性能研究[J].结构工程师,2010,26(1):56-61.
[8]李校兵,汤伟民,张清华等.空斗墙片墙抗侧力性能试验研究[J].自然灾害学报,2010,19(1):8-12.
[9]JGJ 101-96建筑抗震试验方法规程[S].
[10]GB 50003-2001砌体结构设计规范[S].
[11]GBJ 3-88砌体结构设计规范[S].
[12]骆万康,朱希诚,廖春盛.砖砌体剪压复合受力相关性与抗剪摩擦系数的取值[J].工程力学,1997(s1):249-257.
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