| 用Matlab软件内部函数校正强震记录的探讨 |
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| 引用本文： | 曹加良.用Matlab软件内部函数校正强震记录的探讨[J].华南地震,2009,29(2):88-94. |
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| 作者姓名： | 曹加良 |
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| 作者单位： | 广州大学土木工程学院,广东,广州,510006 |
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| 摘 要： | 在标准化结构反应谱时，需要准确地确定地面地震动峰值。而在地震期间，测量地面运动时采集到的地震动加速度时程数据由于种种原因存在基线漂移问题，导致所测数据不能真实反映地面运动．由此难以确定真实地面运动峰值。通过对地震动加速度数据拟合，根据拟合后的数据计算地震速度及位移．并将计算结果分别与利用已有基线修正方法求得的速度及位移进行对比．从而确定最佳拟合次数，消除基线漂移造成影响。研究结果表明，经12次拟合修正地震动加速度求得的地震动位移峰值可用于相对位移反应谱标准化。
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| 关 键 词： | 强震记录 基线漂移 Matlab软件 拟合 |
Discussion on Adjustment of Strong Motion Records by using Matlab Built-in Functions |
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| CAO Jialiang.Discussion on Adjustment of Strong Motion Records by using Matlab Built-in Functions[J].South China Journal of Seismology,2009,29(2):88-94. |
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| Authors: | CAO Jialiang |
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| Institution: | College of Civil Engineering;Guangzhou University;Guangzhou 510006;China |
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| Abstract: | Standardizing response spectra of structures needs accurate peak values of ground motions.For some reasons,baseline drift exists in the time histories of earthquake acceleration records.This phenomenon results in those records cannot reflect the real ground motions.As a result,it is difficult to determine the accurate peak ground motion values.In this paper,the original acceleration records of strong ground motions are fitted and the PGVs and PGDs are calculated based on the fitted acceleration data,and the... |
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| Keywords: | Strong ground motion record Baseline drift Matlab Fitting |
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