农居工程地基砂垫层隔震体系性能试验研究
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摘要
砂垫层具有取材方便、造价低、施工简便的特点,为了更好地在农居工程建设中推广应用地基砂垫层隔震技术,通过制作农村房屋结构模型,进行地基砂垫层隔震体系与无隔震体系的大型振动台试验,研究了地基砂垫层隔震体系的隔震性能。基于结构加速度反应、结构位移反应和结构应变反应三个方面,对比分析无隔震试验和地基砂垫层隔震试验的结果,研究地基砂垫层隔震体系的隔震性能。结果表明:地基砂垫层隔震体系能够有效地减小上部结构的地震加速度反应、层间位移反应和应变反应,具有良好的隔震效果;输入地震动的量级是影响地基砂垫层隔震体系隔震效果的一个重要因素。
The sand cushion exhibits the characteristics of convenient material selection, low cost, and simple construction. To better promote and apply the sand cushion isolation technology to the foundation of rural building construction, large-scale shaking table tests of foundations with sand cushion isolation systems and non-isolation systems were performed to study the performance of the foundation isolation system with a sand cushion by making the structural model of the rural houses. Based on the structural acceleration response, structural displacement response, and structural strain response, the seismic isolation performance of the foundation isolation system with a sand cushion was studied by comparing the non-isolation and isolation test results of the cushion isolation system. The results exhibited that the foundation isolation system with a sand cushion can effectively reduce the seismic acceleration response, story drift response, and strain response of the superstructure and achieve a good isolating effect. The magnitude of the input ground motion is an important factor that influences the isolation effect of the foundation system with a sand cushion.
The sand cushion exhibits the characteristics of convenient material selection, low cost, and simple construction. To better promote and apply the sand cushion isolation technology to the foundation of rural building construction, large-scale shaking table tests of foundations with sand cushion isolation systems and non-isolation systems were performed to study the performance of the foundation isolation system with a sand cushion by making the structural model of the rural houses. Based on the structural acceleration response, structural displacement response, and structural strain response, the seismic isolation performance of the foundation isolation system with a sand cushion was studied by comparing the non-isolation and isolation test results of the cushion isolation system. The results exhibited that the foundation isolation system with a sand cushion can effectively reduce the seismic acceleration response, story drift response, and strain response of the superstructure and achieve a good isolating effect. The magnitude of the input ground motion is an important factor that influences the isolation effect of the foundation system with a sand cushion.
引文
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[10] 岁小溪.橡胶颗粒-砂混合物的隔震性能研究[D].长沙:湖南大学,2009.SUI Xiaoxi.The Study on Seismic Isolation Performance of Granulated Rubber-Sand Mixture[D].Changsha:Hunan University,2009.
[2] 曹万林,叶炜,张玉山,等.玻璃珠-石墨基础滑移隔震砌体结构工作性能试验研究[J].自然灾害学报,2015,24(5):37-46.CAO Wanlin,YE Wei,ZHANG Yushan,et al.Experimental Study on Working Performance of the Base Sliding Isolated Masonry Structure with Glass Beads-graphite Layer[J].Journal of Natural Disasters,2015,24(5):37-46.
[3] 尚守平,周志锦,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(3):13-16.SHANG Shouping,ZHOU Zhijin,LIU Ke,et al.The Research on the Steel-Asphalt Isolation Lay[J].Journal of Railway Science and Engineering,2009,6(3):13-16.
[4] 尚守平,朱博闻,吴建任,等.钢筋-沥青复合隔震层实际工程应用研究[J].湖南大学学报(自然科学版),2013,40(7):1-8.SHANG Shouping,ZHU Bowen,WU Jianren,et al.Research on Steel-Asphalt Isolation Layer in Practical Engineering[J].Journal of Hunan University (Natural Science),2013,40(7):1-8.
[5] 李英民,卜长明,夏洪流,等.砌体墙片滑移和固结振动台试验对比研究[J].中南大学学报(自然科学版),2012,43(8):3228-3236.LI Yingmin,BU Changming,XIA Hongliu,et al.Experimental Comparative Study on Shaking Table Test of Low-rise Masonry Wall with Sliding Absorption System and Solid System[J].Journal of Central South University (Science and Technology),2012,43(8):3228-3236.
[6] 张海龙,展猛,王社良.层间滑移隔震结构地震作用有限元分析[J].地震工程学报,2016,38(4):558-563.ZHANG Hailong,ZHAN Meng,WANG Sheliang.Finite Element Analysis of the Seismic Response of an Interlayer Sliding Isolation Structure[J].China Earthquake Engineering Journal,2016,38(4):558-563.
[7] AHMAD S,GHANI F,RAGHIB ADIL M.Seismic Friction Base Isolation Performance Using Demolished Waste in Masonry Housing[J].Construction and Building Materials,2009,23(1):146-152.
[8] AHMAD S,MASOOD A,HUSAIN A.Seismic Pure Friction Base Isolation Performance Using Demolished Waste in Two-storey Masonry Building[J].Journal of the Institution of Engineers (India):Civil Engineering Division,2011,91(2):10-17.
[9] 窦远明,刘晓立,赵少伟,等.砂垫层隔震性能的试验研究[J].建筑结构学报,2005,26(1):125-128.DOU Yuanming,LIU Xiaoli,ZHAO Shaowei,et al.An Experimental Study of Isolation Performance of Sand Cushion[J].Journal of Building Structures,2005,26 (1):125-128.
[10] 岁小溪.橡胶颗粒-砂混合物的隔震性能研究[D].长沙:湖南大学,2009.SUI Xiaoxi.The Study on Seismic Isolation Performance of Granulated Rubber-Sand Mixture[D].Changsha:Hunan University,2009.