高速铁路高架桥破坏与地震动参数的关系:以日本311地震为例
发布时间：2018-08-11 19:30
【摘要】：收集、整理2011年3月11日地震主震及其4月7日余震中日本东北新干线高架桥的破坏资料,筛选日本东北新干线沿线5 km范围内的K-net与Ki K-net强震动观测台站,选取加速度峰值、谱烈度、阿里亚斯烈度、累积绝对速度、累积能量变化率作为地震动参数研究对象,基于强震动观测台站计算得到的各地震动参数值,分析地震动参数与高架桥结构地震破坏变化和破坏分布的关系。研究结果表明,阿里亚斯烈度和累积能量变化率在结构发生破坏或结构破坏分布密度发生改变时,其地震动参数值会发生剧烈的变化,这表示阿里亚斯烈度和累积能量变化率对结构破坏的变化非常敏感,且能够反映结构破坏的分布趋势,可以推荐作为高速铁路在地震时的运行控制用地震动参数。
[Abstract]:This paper collects and collates the damage data of the main earthquake of March 11, 2011 and its aftershock on April 7, and selects the observation stations of K-net and Ki K-net strong motion in the range of 5 km along the Shinkansen line of northeastern Japan, and selects the peak acceleration. Spectral intensity, Avias intensity, cumulative absolute velocity and cumulative energy change rate are used as the research objects of ground motion parameters. The relationship between ground motion parameters and seismic damage and distribution of viaduct structures is analyzed. The results show that the intensity of Avias and the rate of change of cumulative energy will change dramatically when the structure is destroyed or the distribution density of the structure is changed. This indicates that the intensity of Avias and the rate of cumulative energy change are very sensitive to the change of structural damage and can reflect the distribution trend of structural damage. It can be recommended as a parameter for controlling ground motion of high-speed railway during earthquake.
【作者单位】： 中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室;
【基金】：中国地震局工程力学研究所中央级公益性科研院所基本科研业务专项基金(2011D01) 国家科技支撑计划项目(2014BAK03B01)
【分类号】：U442.55;U211.9;P315.9
[Abstract]:This paper collects and collates the damage data of the main earthquake of March 11, 2011 and its aftershock on April 7, and selects the observation stations of K-net and Ki K-net strong motion in the range of 5 km along the Shinkansen line of northeastern Japan, and selects the peak acceleration. Spectral intensity, Avias intensity, cumulative absolute velocity and cumulative energy change rate are used as the research objects of ground motion parameters. The relationship between ground motion parameters and seismic damage and distribution of viaduct structures is analyzed. The results show that the intensity of Avias and the rate of change of cumulative energy will change dramatically when the structure is destroyed or the distribution density of the structure is changed. This indicates that the intensity of Avias and the rate of cumulative energy change are very sensitive to the change of structural damage and can reflect the distribution trend of structural damage. It can be recommended as a parameter for controlling ground motion of high-speed railway during earthquake.
【作者单位】： 中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室;
【基金】：中国地震局工程力学研究所中央级公益性科研院所基本科研业务专项基金(2011D01) 国家科技支撑计划项目(2014BAK03B01)
【分类号】：U442.55;U211.9;P315.9
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