[编程][软件][地震动] PulsePeriodExtrat: A tool for extracting the pulse period of near-field earthquake velocity [近场地震动速度脉冲周期计算软件]

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近场地震动因其具有较普通地震动更为复杂的特性及其对工程结构的严重破坏性成为地震工程领众多学者研究的热点问题之一。脉冲型地震动较普通地震动对工程结构有着特殊影响,当脉冲周期与结构基本自振周期相近时,共振效应”的存在使得脉冲地震动作用下产生的结构反应要明显大于普通地震动对结构的影响,从而使结构功能失效的可能性大大增加。因此,脉冲周期为脉冲型地震动的一个重要参数。 近场地震动中速度脉冲周期的确定受高频成分的影响具有很强的不确定性,如何计算脉冲周期是一个研究课题,国内外学者给出了多种脉冲周期计算方法。The near-field earthquake driver has more complex characteristics than the ordinary ground motion and its serious damage to the engineering structure has become one of the hot issues studied by many scholars in seismic engineering. Pulsed seismic motion has a special impact on engineering structures compared with ordinary ground motion. When the pulse period is close to the basic natural vibration period of the structure, the existence of “resonance effect” makes the structural response under the action of pulse ground motion significantly greater than the impact of ordinary ground motion on the structure, thus greatly increasing the possibility of structural function failure. Therefore, pulse period is an important parameter of pulse-type ground motion. The determination of velocity pulse period in near-field vibration is highly uncertain due to the influence of high-frequency components. How to calculate the pulse period is a research topic. Domestic and foreign scholars have given a variety of pulse period calculation methods.

PulsePeriodExtrat 程序的基本功能是提取脉冲型地震动的脉冲周期( pulse period) ,其中软件采用的脉冲周期提取方法为文献《常志旺, 翟长海, 李爽, 等. 近场地震动速度脉冲周期的确定[J]. 土木工程学报, 2013 (S2): 130-134.》给出的“峰点法”。The basic function of PulsePeriodExtrat program is to extract the pulse period for near-fault pulse-like ground motions. The pulse period extraction method adopted by the software is the “peak point method” given in the document “Chang Zhiwang, Zhai Changhai, Li Shuang, et al. Determination of the pulse period of near-field vibration velocity [J]. Journal of Civil Engineering, 2013 (S2): 130-134.”

软件的基本特点:

(1)支持多种地震波格式的导入

(2)支持对地震波进行基线修正

(3)对导入 的地震加速度时程自动进行积分,获得速度及位移时程

(4)支持对地震波进行脉冲周期(Pulse period)、脉冲波形(Pulse Wave)、脉冲指标(Pulse Indicator)批量分析,并保存分析结果。

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