高广运, 耿建龙, 毕俊伟, 游远洋. 2019: 地铁环境振动对建筑场地影响实测分析. 工程地质学报, 27(5): 1116-1121. DOI: 10.13544/j.cnki.jeg.2019050
    引用本文: 高广运, 耿建龙, 毕俊伟, 游远洋. 2019: 地铁环境振动对建筑场地影响实测分析. 工程地质学报, 27(5): 1116-1121. DOI: 10.13544/j.cnki.jeg.2019050
    GAO Guangyun, GENG Jianlong, BI Junwei, YOU Yuanyang. 2019: EFFECT OF SUBWAY INDUCED ENVIRONMENTAL VIBRATION ON BUILDING SITE THROUGH IN-SITU MEASUREMENT. JOURNAL OF ENGINEERING GEOLOGY, 27(5): 1116-1121. DOI: 10.13544/j.cnki.jeg.2019050
    Citation: GAO Guangyun, GENG Jianlong, BI Junwei, YOU Yuanyang. 2019: EFFECT OF SUBWAY INDUCED ENVIRONMENTAL VIBRATION ON BUILDING SITE THROUGH IN-SITU MEASUREMENT. JOURNAL OF ENGINEERING GEOLOGY, 27(5): 1116-1121. DOI: 10.13544/j.cnki.jeg.2019050

    地铁环境振动对建筑场地影响实测分析

    EFFECT OF SUBWAY INDUCED ENVIRONMENTAL VIBRATION ON BUILDING SITE THROUGH IN-SITU MEASUREMENT

    • 摘要: 为评价地铁环境振动对某中心城区拟建住宅办公楼的影响,本文使用高灵敏度测试仪TROMINO对该建筑场地进行了24 h环境振动测试,得到了场地3个方向加速度和速度的实测数据。采用1/3倍频程分析法对实测数据进行处理,分析了不同时段场地振动变化规律,并将分析结果与国际标准ISO 2631关于此类建筑场地的振动限值进行对比。结果表明:有地铁运行时的环境振动峰值远大于无地铁运行时;无地铁运行时,地面振动加速度幅值介于10-5~10-1 gal之间,且无明显振动主频;有地铁运行时,振动幅值介于10-4~100 gal之间,并在晚高峰时段达到最大值0.8 gal;地铁运行引起的地面振动主频介于40~50 Hz之间。低频段内(2~8 Hz)场地振动加速度最大值约为0.030 gal,中高频段内(8~250 Hz)场地振动速度最大值为26.715 μm ·s-1,均满足标准要求。

       

      Abstract: This paper investigates the influence of subway induced vibration on a proposed residential office building. It performed filed measurements lasting 24 hours at this building site. Applying a high-precision instrument TROMINO, we recorded the vibration data of acceleration and velocity on three directions simultaneously. For analyzing the environmental vibration characteristics at different periods in a day, we used the one-third octave band spectrum method to analyze the test data. The results show that the peak of environmental vibration during subway operating time is greater than that without subway. The ground vibration acceleration beyond subway operating time is in the range of 10-5~10-1 gal, and has no obvious dominant frequency. The acceleration amplitude of ground vibration in subway operation hours is between 10-4-100 gal. Under the superposition of various factors in the evening peak period, the vibration acceleration of the proposed site reaches the maximum value of 0.8 gal. The dominant frequency of ground vibration induced by the subway lies in the frequency range of 40~50 Hz. In the low frequency range(2~8 Hz), the peak ground acceleration is 0.030 gal, and the maximum value of velocity reaches 26.715 μm·s-1 in the medium-high frequency range(8~250 Hz). One-third octave band spectra of testing vibrations locates below the standard curves specified in the ISO 2631 totally, which indicates that the design requirements are satisfied.

       

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