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首页> 外文会议>Innovation, practice, safety >A NEW DEFINITION OF STRONG MOTION DURATION AND RELATED PARAMETERS AFFECTING THE RESPONSE OF MEDIUM-LONG PERIOD STRUCTURES
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A NEW DEFINITION OF STRONG MOTION DURATION AND RELATED PARAMETERS AFFECTING THE RESPONSE OF MEDIUM-LONG PERIOD STRUCTURES

机译：影响中长周期结构响应的强运动持续时间及相关参数的新定义

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This study presents a new definition of the strong motion duration, combining the alternative bracketed and significant duration definitions. Based on the time integral of the absolute ground velocity, a new index is defined, as the cumulative absolute displacement CAD. The index is used in order to evaluate the strong motion duration. The proposed bracketed-significant duration is well correlated with the strong motion part of the records, especially in the case of near-source events. The duration and the CAD index are correlated with the structural behaviour of medium-to-long period structures. Two normalized parameters representing the amplification of structural response and the number of equivalent loading cycles are determined in terms of the proposed duration and CAD indices. The proposed parameters appear to be better correlated with the structural response than other well-known indices.
机译：这项研究结合了括号括起来和有意义的持续时间定义，提出了一个强运动持续时间的新定义。基于绝对地面速度的时间积分，定义了一个新指标，即累积绝对位移CAD。该索引用于评估强运动持续时间。建议的括号内有效期与记录的强运动部分密切相关，尤其是在近源事件的情况下。持续时间和CAD指数与中长期结构的结构行为相关。根据建议的工期和CAD指标确定了代表结构响应放大和等效荷载循环次数的两个归一化参数。所提出的参数似乎比其他知名指标与结构响应更好地相关。

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