底盘刚度变化对大底盘层间隔震结构抗震性能影响分析 research on seismic performance of a reinforced concrete frame﹣shear walls isolated structure with large chassis.pdfVIP
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底盘刚度变化对大底盘层间隔震结构抗震性能影响分析 research on seismic performance of a reinforced concrete frame﹣shear walls isolated structure with large chassis
第38卷第1期 南昌大学学报(工科版) Vol.38 No.1
2016年3月 ournal of Nanchang University(Engineering Technology) Mar.2016
文章编号:1006-0456(2016)01-0016-07
底盘刚度变化对大底盘层间隔震
结构抗震性能影响分析
吴应雄1,2
(1. 福建福大建筑设计有限公司,福建福州350002;2. 福州大学土木工程学院,福建福州350108)
摘要:为考察下部底盘抗侧移刚度变化对大底盘RC框剪隔震结构抗震性能的影响,在有限元软件Perform-
3D 中建立3种底盘构件尺寸和材料强度不变,仅改变层高的大底盘RC框剪隔震结构弹塑性模型,进行罕遇地震
作用下的地震响应、能量耗散和构件性能状态分析。结果表明:相比非隔震结构,隔震后上部塔楼的地震响应有显
著的减小,而底盘的加速度相比非隔震结构反而放大;随着底盘抗侧移刚度的减小,上部塔楼的减震效果降低,下
部底盘抗震性能的改善效果有所提高;隔震后上部塔楼的梁、柱和剪力墙构件的变形性能状态得到了很大的改善,
尤其是连梁构件,而下部底盘结构的梁、柱构件的变形性能状态也有较好的改善。
关键词:大底盘结构;隔震结构;抗震性能;Perform-3D
中图分类号:TU352.1 文献标志码:A
Research on seismic performance of a reinforced concrete
frame﹣shear walls isolated structure with large chassis
WU Yingxiong1,2
(1.Fujian Fuda Architecture Design Co. ,LTD,Fuzhou350002,China;
2.College of Civil Engineering,Fuzhou University,Fuzhou350108,China)
Abstract:Inordertoinvestigatetheimpactoflargechassislateral stiffnesschangingonthereinforcedconcrete
frame﹣shear walls isolated structurewithlargechassis,threekindsof largechassisRCframe﹣shear isolated structure
elastoplastic models,which size and material strength of chassis component remained unchanged only with story
height changed,were established infinite element softwarePerform-3D,andthenthe seismicresponse,energy dis﹣
sipation and member performance state were analyzed under rare earthquake.The results showed that:seismic re﹣
sponse of the upper tower decreased significantly after isolation compared to the non﹣isolated structure,while the
chassis accelerationwereenlargedcomparedtothenon﹣isolated structure;thedamping effect of theuppe
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