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弹性SDOF体系输入能量谱的设计表达式
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TU318.1

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国家自然科学基金（51478067）


Design expressions for input energy spectrum of elastic SDOF systems
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    摘要:

    合理的地震动设计输入能量谱是推动能量法走向工程应用的重要基础。选取3种场地条件下259条地震动记录，针对弹性单自由度体系（Single Degree of Freedom）的输入能量进行研究。采用归一化方法，将输入能量谱表征为输入能量谱峰值（Elmax）与归一化输入能量谱的乘积；根据相关性分析，提出输入能量谱峰值的影响参数及估算方法；基于3种场地条件下归一化输入能量谱特征，通过拟合建立三段式归一化输入能量谱，提出阻尼比为0.05时，弹性SDOF体系设计输入能量谱的计算方法，并验证了该方法的可行性。

    Abstract:

    Reasonable seismic design input energy spectrum is important basis for promoting the engineering application of energy method. Based on 259 seismic records on 3 site conditions, the input energy spectrum of elastic single degree of freedom (SDOF) systems were studied. Using the normalization method, the elastic input energy spectrum are characterized as the product of the maximum of input energy spectrum (EImax) and the normalized input energy spectrum. According to correlation analysis, influence factors and estimation method of the maximum of input energy spectrum are given; based on characteristics of the normalized input energy spectrum on different site conditions, the simplified normalized input energy spectrum is established by multiple fitting, and the calculation method of design input energy spectrum of elastic SDOF systems with the damping ratio of 0.05 is proposed and verified.

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夏洪流,胡仁杰.弹性SDOF体系输入能量谱的设计表达式[J].土木与环境工程学报（中英文）,2019,41(1):89-94. Xia Hongliu, Hu Renjie. Design expressions for input energy spectrum of elastic SDOF systems[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2019,41(1):89-94.10.11835/j. issn.2096-6717.2019.011

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  • 收稿日期:2018-05-19
  • 在线发布日期: 2019-04-04
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