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  刘湘莅,郭正位,陈兆仁,尚守平,周可威,杨龙.钢筋沥青隔震层振动台试验及其在不同高度砌体结构电力用房中的地震响应分析[J].震灾防御技术,2018,(2):304-319, DOI:10.11899/zzfy20180206.

钢筋沥青隔震层振动台试验及其在不同高度砌体结构电力用房中的地震响应分析
摘要:    为弥补试验的不足,对试验室里难以实现的情况进行研究,如大比例甚至足尺模型的动力试验,利用大型有限元软件MSC.MARC对钢筋-沥青复合隔震层建立了非线性有限元模型。利用钢筋非线性子程序UBEAM和非线性弹簧子程序USPRNG,分别模拟了钢筋和砖墩-上梁之间相互作用关系的非线性情况,引入了沥青油膏的温度影响系数。为验证该模型,在钢筋沥青隔震层试件振动台试验的基础上,对振动台试验中各试件的模态进行了计算、对各工况进行了三维有限元时程分析,并将分析结果与试验结果对比,计算结果与试验结果吻合较好,验证了该模型的准确性和合理性。最后利用该模型,建立了不同高度的砌体结构有限元模型,设计并建立了相应的墙下条形隔震层模型,对钢筋沥青复合隔震层在不同高度的砌体结构中的动力性能和隔震效果进行了数值模拟,并对计算结果进行了归纳和分析,得出了一系列有用的结论。
作者单位
刘湘莅 国网河南省电力公司经济技术研究院, 郑州 450000 
郭正位 国网河南省电力公司经济技术研究院, 郑州 450000 
陈兆仁 湖南大学, 长沙 410082 
尚守平 湖南大学, 长沙 410082 
周可威 湖南大学设计院河南分院, 郑州 450000 
杨龙 成都基准方中建筑设计有限公司郑州分公司, 郑州 450000 
关  键  词:隔震  钢筋沥青隔震层  振动台试验  有限元  非线性
DOI:10.11899/zzfy20180206
基金项目:国家“十二五”科技支撑项目(2015BAL03B01)
收稿日期:2017-08-22
作者简介:刘湘莅,男,生于1973年。高级工程师。主要从事输变电工程设计评审技术工作。E-mail:liuxiangli@ha.sgcc.com
通讯作者:陈兆仁,男,生于1994年。硕士研究生。主要从事房屋隔震方面研究。E-mail:446369011@qq.com
Shaking Table Test of Steel-asphalt Isolation Layer and Its Seismic Response Analysis in Masonry Structure Electric Power House with Different Heights
Abstract:      To remedy defects of tests in laboratory, study more situations which are difficult to achieve in it, such as large-scale even the full scale dynamic testing. In this paper a non-linear finite element model of steel-asphalt isolation layer was established through finite element software MSC.MARC. By using steel non-linear subroutine UBEAM and spring nonlinear subroutine USPRNG, the non-linearity of steel and the nonlinear interaction between brick pier and upper beam were respectively simulated. The temperature factor of asphalt ointment was also proposed. To verify the model, on the basis of shaking table test of steel-asphalt isolation layer, modes of specimens in shaking table tests were calculated, and all conditions in the shaking table tests were simulated by 3D Finite Element time history analysis. Comparison of the calculated results with the experimental results shows good agreement, which verifies the accuracy and reasonableness of the model. Finally, our models were set up in finite element models with different masonry structures in different heights, and the corresponding isolation layer models under strip foundation were design and built. The dynamic performance and isolation effect of the steel-asphalt isolation layer in different masonry structures with different heights of was simulated, and a series of useful conclusions were drawn.
Keywords:  Seismic isolation  Steel-asphalt isolation layer  Shaking table test  Finite element  Nonlinear
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