新型节能复合混凝土空心砌块砌体抗震性能的试验研究
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摘要
本文通过2片开窗洞加窗台梁节能复合混凝土小型空心砌块墙体和2片不开窗洞墙体的水平低周反复荷载试验,研究了节能复合混凝土小型空心砌块砌体墙的受力全过程、开裂部位、裂缝发展情况以及破坏形态,分析了墙体的滞回特性、延性、耗能能力,刚度退化曲线等抗震性能,同时,考察了墙体外叶保护层的受力性能、破坏程度以及与墙体的共同工作机理,探讨了不同构造措施以及开窗洞对墙体抗震性能的影响。研究结果表明:复合混凝土小型砌块砌体从开始加载到最终破坏,砌块保护层都没有明显的鼓凸和脱落现象,说明聚苯层及横向拉结筋能够提供可靠的连接,保证外叶保护层在水平剪力和竖向荷载共同作用下和墙体整体工作,此外,开窗洞对墙体的抗震性能削弱较大。
Based on the low cyclic reversed lateral loading tests of two pieces of small-sized composite concrete hollow block masonry walls with windows and two walls without opening,the behavior such as deformation process,failure mechanism,hysteretic characteristic,ductility,energy-dissipation capacity and curve of stiffness degradation was studied.In the mean time,the behavior and the failure mode of the protection layer under loading were clarified,and the effects of constructional measures and window opening on the seismic behavior of walls were investigated.The test results reveal that from the beginning to the end,the out-side layer of the composite concrete small-sized hollow block wall was not much damaged,which show that the out-side layer can be connected with the wall well and keep the normal-working of the wall under vertical and horizontal loading.This paper also shows that the windows hole will reduce the seismic resistance of the walls.
Based on the low cyclic reversed lateral loading tests of two pieces of small-sized composite concrete hollow block masonry walls with windows and two walls without opening,the behavior such as deformation process,failure mechanism,hysteretic characteristic,ductility,energy-dissipation capacity and curve of stiffness degradation was studied.In the mean time,the behavior and the failure mode of the protection layer under loading were clarified,and the effects of constructional measures and window opening on the seismic behavior of walls were investigated.The test results reveal that from the beginning to the end,the out-side layer of the composite concrete small-sized hollow block wall was not much damaged,which show that the out-side layer can be connected with the wall well and keep the normal-working of the wall under vertical and horizontal loading.This paper also shows that the windows hole will reduce the seismic resistance of the walls.
引文
[1]丁大钧.墙体改革与可持续发展[J].建筑结构,2004(3):56~62.
[2]孙伟民,胡晓明,郭樟根,等.预应力砌体抗震性能的试验研究[J].建筑结构学报,2003,24(6):25~31.
[3]孙惠镐,王墨耕,李俊民.小砌块建筑设计与施工[M].北京:中国建筑工业出版社,2001.
[4]熊立红,夏锦江.新型混凝土空心砌块房屋抗震性能研究[J].地震工程与工程振动,2003,23(3):132~137.
[5]叶燕华,孙伟民,何嘉鹏,等.混凝土空心砌块墙体热绝缘系数理论分析[J].新型建筑材料,2002(5):27~29.
[6]程建杰,何嘉鹏,孙伟民,等.节能型复合混凝土小型空心砌块的热绝缘系数分析[J].新型建筑材料,2005(8):50~52.
[7]孙伟民,王辰宇,张怀金.节能型复合混凝土小型空心砌块砌体抗剪试验研究[J].混凝土与水泥制品,2004(5):48~49.
[8]砌体结构抗震试验技术条例编写组.砌体结构墙体抗震技术条例[S].北京:中国建筑工业出版社,1985.
[9]张景玮,李宏男,张曰果.低周反复荷载作用下空心砖夹心墙体试验[J].沈阳建筑工程学院学报,2002(1):5~8.
[2]孙伟民,胡晓明,郭樟根,等.预应力砌体抗震性能的试验研究[J].建筑结构学报,2003,24(6):25~31.
[3]孙惠镐,王墨耕,李俊民.小砌块建筑设计与施工[M].北京:中国建筑工业出版社,2001.
[4]熊立红,夏锦江.新型混凝土空心砌块房屋抗震性能研究[J].地震工程与工程振动,2003,23(3):132~137.
[5]叶燕华,孙伟民,何嘉鹏,等.混凝土空心砌块墙体热绝缘系数理论分析[J].新型建筑材料,2002(5):27~29.
[6]程建杰,何嘉鹏,孙伟民,等.节能型复合混凝土小型空心砌块的热绝缘系数分析[J].新型建筑材料,2005(8):50~52.
[7]孙伟民,王辰宇,张怀金.节能型复合混凝土小型空心砌块砌体抗剪试验研究[J].混凝土与水泥制品,2004(5):48~49.
[8]砌体结构抗震试验技术条例编写组.砌体结构墙体抗震技术条例[S].北京:中国建筑工业出版社,1985.
[9]张景玮,李宏男,张曰果.低周反复荷载作用下空心砖夹心墙体试验[J].沈阳建筑工程学院学报,2002(1):5~8.
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