| 增设翼柱的底商多层砌体房屋抗震性能试验研究 |
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| 引用本文： | 梁永朵,郭迅,姜金征,蒋越.增设翼柱的底商多层砌体房屋抗震性能试验研究[J].西北地震学报,2017,39(4):623-631. |
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| 作者姓名： | 梁永朵 郭迅 姜金征 蒋越 |
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| 作者单位： | 辽宁省地震局, 辽宁 沈阳 110034,防灾科技学院, 河北 三河 065201,辽宁省地震局, 辽宁 沈阳 110034,辽宁省地震局, 辽宁 沈阳 110034 |
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| 基金项目： | 辽宁省地震局研究生基金项目（LNDZBSJJ002）；国家自然科学基金项目（51478117） |
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| 摘 要： | 为研究在结构前纵墙底层部位增设翼柱对底商多层砌体房屋抗倒塌性能的影响,分别设计了一个1/5缩尺比例的普通底商多层砌体房屋及增设翼柱的砌体房屋模型分别进行振动台试验研究,对比分析各模型的破坏过程、加速度放大系数、相对位移及典型位置应变等参数。结果表明,在同样的地震动输入下,带有翼柱的底商多层砌体房屋破坏程度、层间相对位移及层间位移角均明显低于普通底商多层砌体房屋,带有翼柱的底商多层砌体房屋抗倒塌性能显著提高。
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| 关 键 词： | 底商多层砌体 振动台试验 翼柱 抗震性能 |
| 收稿时间： | 2016/3/7 0:00:00 |
Seismic Behaviors of Bottom-business Multi-storyMasonry Structure with Winged Columns |
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| LIANG Yong-duo,GUO Xun,JIANG Jin-zheng and JIANG Yue.Seismic Behaviors of Bottom-business Multi-storyMasonry Structure with Winged Columns[J].Northwestern Seismological Journal,2017,39(4):623-631. |
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| Authors: | LIANG Yong-duo GUO Xun JIANG Jin-zheng and JIANG Yue |
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| Institution: | Earthquake Administration of Liaoning Province, Shenyang 110034, Liaoning, China,Institute of Disaster Prevention, Sanhe 065201, Hebei, China,Earthquake Administration of Liaoning Province, Shenyang 110034, Liaoning, China and Earthquake Administration of Liaoning Province, Shenyang 110034, Liaoning, China |
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| Abstract: | In China, it is a common phenomenon that severe disaster occurs in weak earthquakes. One important reason of casualty and loss is the severe damage and collapse of buildings. The bottom-business multi-story masonry structure is the most severely damaged building form. In the Wenchuan earthquake, 80% of these types of buildings were ruined, while the bottom-business multi-story masonry structure is very popular in the small and middle towns in the south of China. According to inadequate statistics, about two million such buildings exist in China, which are inhabited by 120 million residents. Thus, it is necessary to study the earthquake resistant mechanism of this building structure and the methods to reinforce the existing buildings to reduce the damages caused by earthquakes. Through investigating the post-earthquake sites, it is found that in the same meizoseismal area, individual bottom-business multi-story masonry structures have shown very good seismic performance. The difference between these buildings and other bottom-business multi-story masonry buildings lies in the fact that winged walls and winged columns were added to the side of the columns in the longitudinal wall of the bottom floor. This structural measure raises the earthquake resistant capacity of the building and reduces the rigidity difference between the front and back vertical walls in the bottom floor; i.e., it reduces the earthquake load difference between the longitudinal walls to contain the damage rate of this building to as low as the middle of the XI zone. To study the influence of the wing column in the bottom of the front longitudinal wall on the collapse-resistant capacity of multi-story masonry structures, shake table tests of 1/5 scaled masonry structure models, with and without wing columns, have been conducted. The damage progression, acceleration amplification factor, relative displacement and strain at typical positions were compared and analyzed. The results show that the damage state, the inter-story displacement and the inter-story drift ratio of the model with wing columns were much lower compared with the model without wing columns. It indicates that the collapse resistant capacity of bottom-business multi-story masonry structures with wing columns would be better than the original structure. |
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| Keywords: | bottom-business multi-story masonry structure shaking table test winged column earthquake resistant capability |
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