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地铁车辆段上盖高层全框支剪力墙结构模拟地震振动台试验研究
欧阳蓉1, 余良刚1, 曹 薇1, 陈洋洋2, 徐 希1
摘 要

(1 深圳市市政设计研究院有限公司, 深圳 518029;2 广州大学工程抗震研究中心, 广州 510405)

摘要: 采用一栋 122m 高的深圳地铁常用高层住宅楼作为地铁车辆段上盖全框支剪力墙结构的试验模型,对其缩尺比例为 1 / 20 的结构模型进行模拟地震振动台试验。 介绍了模型制作、相似关系的确定方法,测试了模型结构在小震、中震和大震作用下的加速度、位移和应变,并分析了试验现象和实测数据。 结果表明:小震作用下结构自振频率仅下降 3%左右,构件未出现裂缝,模型结构处于弹性阶段;中震作用下,模型无肉眼可见裂缝,结构自振频率下降 11%左右,结构基本处于弹性阶段;大震作用下,结构自振频率下降 48% ~ 60%,模型结构在 4 层(转换层上第2 层)剪力墙首先出现裂缝,继而其他构件出现裂缝,但模型未发生倒塌,进入了弹塑性阶段,模型结构在各地震水准作用下能够满足规范的抗震性能要求;地震波的频谱特性对大震下结构弹塑性层间位移角影响较大;全部加载完成后模型结构转换梁和底部框支柱完好,全框支层结构抗震性能较好。

关键词: 全框支剪力墙结构;振动台试验;自振频率;抗震性能;转换梁;框支柱

中图分类号:TU375 文献标志码:A 文章编号:1002 ̄848X(2022)01 ̄0070 ̄08

DOI:10. 19701 / j. jzjg. LS210166

Study on shaking table test of complete frame ̄supported shear wall structure for high ̄rise buildingabove the depot under simulated earthquakes

OUYANG Rong1, YU Lianggang1, CAO Wei1, CHEN Yangyang2, XU Xi1

(1 Shenzhen Municipal Design and Research Institute Co., Ltd., Shenzhen 518029, China;2 Engineering SeismicResearch Center of Guangzhou University, Guangzhou 510405, China)

Abstract: Take a 122m ̄high residential building commonly used in Shenzhen metro as the test model of the completeframe ̄supported shear wall structure model above the depot, its structure model with a scale of 1 / 20 was subjected to ashaking table test under the simulated earthquakes. The model making and the method of determining the similarityrelationship were introduced. The acceleration, displacement and strain of the model structure under the action of frequent,fortification and rare earthquakes were tested, and the experimental phenomena and measured data were analyzed. Theresults show that the natural frequency of the structure only drops by about 3% under the action of frequent earthquakes,and there are no cracks in the components, and the model structure is in the elastic stage;under the action of fortificationearthquakes, the model has no visible cracks, and the natural frequency of the structure drops by about 11%, and thestructure is basically in the elastic stage;under the action of a rare earthquake, the natural frequency of the structure dropsby 48% ~ 60%, and the model structure has cracks in the shear wall of the 4th floor ( the second layer on the transferfloor), and then the other components have cracks, but the model does not collapse and enters the elasto ̄plastic stage, andthe model structure can meet the seismic performance requirements of the code under the action of various seismic levels;the spectral characteristics of the seismic wave have a greater influence on the elasto ̄plastic interlayer displacement angle ofthe structure under the rare earthquakes;the model structure transfer beam after all loading is completed and the bottomtransfer columns are intact, and the full frame ̄support structure has good seismic performance.

Keywords:complete frame ̄supported shear wall structure;shaking table test;natural frequency;seismic performance;transfer beam;transfer column

第一作者:欧阳蓉,学士,高级工程师,一级注册结构工程师,主要从事结构设计工作,Email:oyroyr@ sina. com。

[引用本文] 欧阳蓉,余良刚,曹薇,等. 地铁车辆段上盖高层全框支剪力墙结构模拟地震振动台试验研究[ J].建筑结构,2022,52(1):70 ̄77. OUYANG Rong, YU Lianggang, CAO Wei, et al. Study on shaking table test of completeframe ̄supported shear wall structure for high ̄rise building above the depot under simulated earthquakes [ J]. BuildingStructure,2022,52(1):70 ̄77.

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