| 甘肃典型夯土民房承重墙体加固试验研究 |
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| 引用本文： | 徐舜华,王兰民,王强,袁中夏.甘肃典型夯土民房承重墙体加固试验研究[J].地震学刊,2011(4):408-414. |
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| 作者姓名： | 徐舜华 王兰民 王强 袁中夏 |
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| 作者单位： | 中国地震局地震预测研究所兰州创新基地、中国地震局兰州地震研究所,兰州730000 |
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| 摘 要： | 武都是甘肃省典型夯土民房使用地区,研究其夯土民房的抗震性能对于防灾减灾具有重要意义。在试验中,使用武都当地常用土料,完全按照其施工工艺夯筑4片夯土墙体试件,利用伪静力方法研究了素土墙体与使用铁丝网加固墙体的抗剪强度。结果显示：①在竖向荷载10 kN条件下,加固墙体试件较素土墙体试件的水平开裂荷载和极限荷载分别增长了73%和38%,在竖向荷载18 kN条件下,加固墙体试件素土墙体试件的水平开裂荷载和极限荷载分别增长了76%和5%;②随着竖向荷载从10 kN增加到18 kN,素土墙体试件的水平开裂荷载与极限荷载分别增长了217%和359%,加固墙体试件的水平开裂荷载与极限荷载则增长了223%和249%;③在水平往复荷载的作用下,夯土墙体始终沿着夯土层间的水平和垂直接触裂缝产生破坏,最终碎裂成块体。
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| 关 键 词： | 武都 夯土民房 承重墙体 抗剪强度 抗震加固 |
Study on Shearing Strength of Typical Reinforced Rammed Earth Wall in Gansu Province |
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| XU Shun-hua,WANG Lanzhou Base of Institute of Lan-min,WANG Qiang,YUAN Zhong-xia.Study on Shearing Strength of Typical Reinforced Rammed Earth Wall in Gansu Province[J].Journal of Seismology,2011(4):408-414. |
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| Authors: | XU Shun-hua WANG Lanzhou Base of Institute of Lan-min WANG Qiang YUAN Zhong-xia |
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| Institution: | Earthquake Science, Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China) |
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| Abstract: | Research on seismic performance of typical rammed earth houses is important for disaster prevention and mitigation in Wudu, Gansu province. Four experimental walls are built using local material and local construction technology. The shearing strength of raw soil wall and the wall reinforced by iron mesh are investegated by pseudo-static test, the results show, （1） the horizontal crack load and ultimate load of reinforced walls increases by 73% and 38% than those of raw soil walls under the overlying load of 10kN, and those are 76% and 5% under the overlying load 18kN; （2） the crack load and ultimate load of raw soil wall increases by 217% and 359% with the overlying load increases from 10kN to 18kN, while the growth rates are 223% and 249% separately for reinforced wall; （3） the rammed earth wall always destroys along the horizontal and vertical cracks between layers, and eventually breaks into blocks under horizontal cyclic loading. |
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| Keywords: | Wudu rammed earth house bearing wall shearing strength seismic strengthening |
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