• ISSN 1673-5722
  • CN 11-5429/P

SV波斜入射时地铁车站-土-邻近地表框架结构动力相互作用分析

张季 蒋玮 谭灿星 许紫刚 唐柏赞 庄海洋

张季,蒋玮,谭灿星,许紫刚,唐柏赞,庄海洋,2022. SV波斜入射时地铁车站-土-邻近地表框架结构动力相互作用分析. 震灾防御技术,17(4):622−631. doi:10.11899/zzfy20220402. doi: 10.11899/zzfy20220402
引用本文: 张季,蒋玮,谭灿星,许紫刚,唐柏赞,庄海洋,2022. SV波斜入射时地铁车站-土-邻近地表框架结构动力相互作用分析. 震灾防御技术,17(4):622−631. doi:10.11899/zzfy20220402. doi: 10.11899/zzfy20220402
Zhang Ji, Jiang Wei, Tan Canxing, Xu Zigang, Tang Baizan, Zhuang Haiyang. Analysis on Dynamic Interaction of Subway Station-soil-aboveground Frame Structure Under Inclined Incidence of SV Wave[J]. Technology for Earthquake Disaster Prevention, 2022, 17(4): 622-631. doi: 10.11899/zzfy20220402
Citation: Zhang Ji, Jiang Wei, Tan Canxing, Xu Zigang, Tang Baizan, Zhuang Haiyang. Analysis on Dynamic Interaction of Subway Station-soil-aboveground Frame Structure Under Inclined Incidence of SV Wave[J]. Technology for Earthquake Disaster Prevention, 2022, 17(4): 622-631. doi: 10.11899/zzfy20220402

SV波斜入射时地铁车站-土-邻近地表框架结构动力相互作用分析

doi: 10.11899/zzfy20220402
基金项目: 国家自然科学基金青年基金(52008170)
详细信息
    作者简介:

    张季,男,生于1985年。博士,副教授,硕士生导师。主要从事地震工程方面的研究。E-mail:jizhang@ecjtu.edu.cn

    通讯作者:

    庄海洋,男,生于1978 年。博士,教授,博士生导师。主要从事地震工程方面的研究。E-mail:zhuang7802@163.com

Analysis on Dynamic Interaction of Subway Station-soil-aboveground Frame Structure Under Inclined Incidence of SV Wave

  • 摘要: 地震作用下地铁车站和邻近建筑间的动力相互作用问题已引起许多学者的关注和重视,然而斜入射地震波作用下的相互作用分析研究较少,有关规律仍不明确。为此建立基于黏弹性人工边界的地铁车站-土-地表框架结构整体动力分析有限元模型,围绕入射角、地上与地下结构间距、场地类别等因素,采用频域刚度矩阵自由场地震响应分析方法获得任意角度斜入射SV波作用下地铁车站-土-地表框架结构动力响应规律。研究结果表明,地表框架结构的存在会显著增大车站中柱轴力幅值,当地表框架结构与车站紧邻时,中柱轴力放大幅度最大为730%,放大效应会改变轴力随入射角的变化规律,总体上使车站中柱轴力在SV波垂直入射和超临界角10°左右入射时均具有相当的幅值;地表框架结构对地铁车站层间位移角的影响与场地条件密切相关,在较硬的场地(Ⅱ类场地)中,车站层间位移角放大幅度最大为74%,在较软的场地(Ⅳ类场地)中,车站层间位移角缩小幅度最大为30%;地铁车站的存在对地表框架结构层间位移角具有放大作用,总体上地铁车站与地表框架结构的距离越近,放大作用越明显,地表框架结构层间位移角放大幅度最大为52%。建议将0°入射和超临界角10°左右入射工况作为地上或地下结构地震响应分析的不利工况。
  • 图  1  分析模型

    Figure  1.  Analysis model

    图  2  车站结构横断面(单位:毫米)

    Figure  2.  Sectional view of the station(Unit:mm)

    图  3  算例场地土层参数

    Figure  3.  Soil profiles of the example sites

    图  4  地震波加速度时程

    Figure  4.  Accelerograms of incident waves

    图  5  自由场地表中点加速度峰值随入射角变化曲线

    Figure  5.  Curve of peak acceleration of midpoint on the surface of free field varying with incident angle

    图  6  Ⅱ类场地中地铁车站内力幅值随入射角变化曲线

    Figure  6.  Amplitudes of internal forces of subway station varying with incident angles in class Ⅱ site

    图  7  Ⅲ类场地中地铁车站内力幅值随入射角变化曲线

    Figure  7.  Amplitudes of internal forces of subway station varying with incident angles in class Ⅲ site

    图  8  Ⅳ类场地中地铁车站内力幅值随入射角变化曲线

    Figure  8.  Amplitudes of internal forces of subway station varying with incident angles in class Ⅳ site

    图  9  El Centro波作用下车站层间位移角随入射角变化曲线

    Figure  9.  Variation curves of story drift ratio versus incident angle under El Centro wave

    图  10  Kobe波作用下车站层间位移角随入射角变化曲线

    Figure  10.  Variation curves of story drift ratio versus incident angle under Kobe wave

    图  11  地表框架结构最大层间位移角随入射角变化曲线

    Figure  11.  Variation curves of maximum story drift ratio of aboveground frame structure versus incident angle

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  • 收稿日期:  2022-08-22
  • 刊出日期:  2022-12-31

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