农村房屋新型隔震与抗震砌体结构振动台试验研究
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摘要
为提高农村房屋的抗震减震能力,提出了一种新型基础滑移隔震构造的砌体房屋和一种异形保温砌块带构造柱砌体房屋,并均已获得国家发明专利。进行了4个农村房屋结构模型的模拟地震振动台试验研究,试验模型包括:1个基础滑移隔震砌体房屋和1个对比的抗震房屋;1个异形保温砌块带构造柱砌体房屋和1个对比的普通保温砌块砌体房屋。通过试验,研究了基础滑移隔震结构的工作机制,分析了抗震结构的抗倒塌能力与墙体破坏过程。研究表明:提出的基础滑移隔震结构,构造简单,造价低廉,工作可靠,当峰值加速度为0.1g时滑移隔震系统便可启动,可显著减小上部结构的地震作用;异形保温砌块带构造柱砌体房屋与普通保温砌块砌体房屋相比,其承载力高,刚度退化慢,延性较好,综合抗震能力显著提高。本文研发的新型基础滑移隔震砌体结构和异形保温砌块砌体结构,适于农村房屋的建造。
A new kind of base vibration isolation masonry structure and an anti-seismic masonry structure were presented to improve the anti-seismic and damping performances of masonry buildings in rural areas.The two technologies have obtained the China national invention patents.Four rural housing structures were tested on a shaking table.The test models include: the base vibration isolation masonry structure model and its comparison model with anti-seismic measures,the masonry structure model made up of special-shaped insulating concrete blocks with constructional columns and its comparison model made up of normal concrete blocks and corresponding constructional measures.Based on the experiments,the working performance of the base vibration isolation was studied;the anti-collapse capacity and wall failure process of the new anti-seismic structure were analyzed.The seismic design recommendations based on the above analysis were put forward.Experiments show that: the proposed base isolation system has the advantages of simple construction,low cost and good working reliability;when the peak acceleration reaches 0.1g,the base isolation system will start working effectively,which can significantly reduce the seismic effect applied to the upper structure;the proposed new anti-seismic system is more reasonable in anti-seismic design and has higher anti-seismic capacity,slower stiffness degradation and better ductility.It can significantly improve the comprehensive seismic performance of rural housings.The new base isolation system and the new anti-seismic system proposed are suitable for applying in rural areas in China.
A new kind of base vibration isolation masonry structure and an anti-seismic masonry structure were presented to improve the anti-seismic and damping performances of masonry buildings in rural areas.The two technologies have obtained the China national invention patents.Four rural housing structures were tested on a shaking table.The test models include: the base vibration isolation masonry structure model and its comparison model with anti-seismic measures,the masonry structure model made up of special-shaped insulating concrete blocks with constructional columns and its comparison model made up of normal concrete blocks and corresponding constructional measures.Based on the experiments,the working performance of the base vibration isolation was studied;the anti-collapse capacity and wall failure process of the new anti-seismic structure were analyzed.The seismic design recommendations based on the above analysis were put forward.Experiments show that: the proposed base isolation system has the advantages of simple construction,low cost and good working reliability;when the peak acceleration reaches 0.1g,the base isolation system will start working effectively,which can significantly reduce the seismic effect applied to the upper structure;the proposed new anti-seismic system is more reasonable in anti-seismic design and has higher anti-seismic capacity,slower stiffness degradation and better ductility.It can significantly improve the comprehensive seismic performance of rural housings.The new base isolation system and the new anti-seismic system proposed are suitable for applying in rural areas in China.
引文
[1]周中一,曹万林,王卿,等.一种农村基础隔震砌体结构房屋振动台试验研究[C].第八届全国地震工程学术会议论文集(土木建筑与环境工程,2010,32(增刊2)):521-523.
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[6]关罡.底框砌体滑移隔震结构的优化设计研究[J].底框砌体滑移隔震结构的优化设计研究.世界地震工程,2004,20(2):61-63.
[7]廖健敏,王清敏,丰定国,等.基础滑移隔震房屋动力特性的试验研究.建筑结构,2000,30(11)):17-19.
[8]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
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[10]Loth H R,Shing B.Interface model applied to fracture ofmasonry structures[J].Journal of Structure Engineering,ASCE120(1),1994:63-80.
[2]程才渊,郑颐,吴明舜,等.配筋砌体单层房屋模型振动台试验研究[J].建筑结构,2005,35(9):28-33.
[3]尚守平,张志锦,刘可,等.一种钢筋-沥青复合隔震层的性能[J].铁道科学与工程学报,2009,6(6):13-16.
[4]王英榜,楼永林.滑移减震技术在多层砌体房屋中的应用[J].山西建筑,2005,31(24):72-73.
[5]谷伟,夏禹,刘斌.石墨滑移隔震砌体房屋错动位移研究[J].武汉理工大学学报,2003,25(2):27-30.
[6]关罡.底框砌体滑移隔震结构的优化设计研究[J].底框砌体滑移隔震结构的优化设计研究.世界地震工程,2004,20(2):61-63.
[7]廖健敏,王清敏,丰定国,等.基础滑移隔震房屋动力特性的试验研究.建筑结构,2000,30(11)):17-19.
[8]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[9]Brown Bricks R H.Prediction of brick masonry prism strengthform reduced constratint brick tests[J].ASTM specialtechnical publication,1975,589:171-194.
[10]Loth H R,Shing B.Interface model applied to fracture ofmasonry structures[J].Journal of Structure Engineering,ASCE120(1),1994:63-80.
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