地铁上盖超高层结构竖向振动台模型试验——不同振动控制方案影响研究
引用文献：
柯小波 汪大洋 周云 梁秋河 李钧睿 凌海媚 丁超. 地铁上盖超高层结构竖向振动台模型试验——不同振动控制方案影响研究[J]. 建筑结构，2022，48（05）：9-14，35.
KE Xiaobo WANG Dayang ZHOU Yun LIANG Qiuhe LI Junrui LING Haimei DING Chao. Study on vertical shaking table model test of super high-rise structure over subway: the influence of different vibration control schemes[J]. Building Structure，2022,48（05）：9-14，35.
摘要：通过对十种不同振动控制方案的1∶30缩尺比振动台试验模型进行竖向白噪声扫频，根据动力特性分析确定叠层橡胶支座合理的布置位置，并对具有合理的叠层橡胶支座布置位置的四支座模型和六支座模型以及传统结构设计模型共进行了84组工况的竖向地铁激励振动台试验，研究振动控制层竖向刚度对上部结构的竖向加速度响应和竖向振动控制效果的影响。结果表明：不同叠层橡胶支座布置位置对振动台模型竖向动力特性具有显著的影响，应根据其与原型结构动力特性的吻合度优化调整振动台模型支座布置方案；在满足竖向承载力的前提下，适当减小振动控制层竖向刚度，可降低竖向自振频率，使其进一步远离地铁场地波的卓越频带，竖向峰值加速度和竖向均方根加速度均有显著减小，竖向振动控制效果趋优。
关键词：地铁上盖结构，超高层结构，振动控制方案，叠层橡胶支座，竖向刚度，竖向振动控制效果
基金：广州市科技计划项目(202032866、202102010459)；广东省科技创新战略专项资金(pdjh2020a0452)。
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[5] 张晖,张善莉.组合隔振(震)砌体结构模型振动台竖向隔振研究[J].建筑结构,2013,43(13):13-16,6.
[6] 吴从晓,周云,邓雪松,等.竖向隔振建筑振动反应分析研究[J].土木工程学报,2013,46(S2):13-18.
[7] 肖聪.隔震层与上部结构刚度比对隔振性能的影响[D].长沙:湖南大学,2015.
[8] 张晖,盛涛.地铁运行诱发建筑物振动的竖向基础隔振现场模型试验分析[J].建筑结构,2013,43(13):22-26.
[9] 李江宁,张晖,虞炜.竖向基础隔振模型建筑在地铁激励下的振动响应研究[J].建筑结构,2013,43(13):27-30.
[10] 盛涛,李亚明,张晖,等.地铁邻近建筑的厚层橡胶支座基础隔振试验研究[J].建筑结构学报, 2015, 36(2):35-40.
[11] 刘艳,罗雁云.城市高架轨道多层隔振系统影响参数匹配[J].同济大学学报(自然科学版),2018,46(11):1520-1527.
[12] 汪大洋,梁秋河,周云,等.地铁上盖超高层结构竖向振动台试验——工程背景与模型验证研究[J].建筑结构,2022,52(5):1-8,28.
[13] 谢志行,拜立岗,施卫星.基于我国规范的城市轨道交通环境振动计算与评价[J].结构工程师, 2017, 33(5):111-117.
Study on vertical shaking table model test of super high-rise structure over subway: the influence of different vibration control schemes
Abstract: Through the vertical white noise frequency sweeping of the shaking table test models with 1∶30 scale ratio of ten different vibration control schemes, the reasonable placements of the laminated rubber bearings were determined according to the analysis of the dynamic characteristics. A total of 84 groups of vertical metro excitation shaking table tests were carried out on the four bearing model and six bearing model with reasonable laminated rubber bearing placement and traditional structural design model, the effect of vertical acceleration response and vertical vibration control effect of the upper structure caused by the vertical stiffness of the vibration control layer were studied. The results show that the different placement schemes of laminated rubber bearings have significant impacts on the vertical dynamic characteristics of the shaking table model, and the placement schemes of shaking table model bearings should be optimized according to its consistency with the dynamic characteristics of the prototype structure. Under the premise of satisfying the vertical capacity, appropriately reducing the vertical stiffness of the vibration control layer can reduce the vertical natural vibration frequency and make it further away from the excellent frequency band of the subway site wave. The vertical peak acceleration and the vertical root mean square(RMS) acceleration are significantly reduced, and the vertical vibration control effect is better.
Keywords: structure over subway; super high-rise structure; vibration control schemes; laminated rubber bearing; vertical stiffness; vertical vibration control effect
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