The accumulation of plastic deformations during an intense earthquake may cause structural failures at deformations significantly smaller than those that can be developed under monotonic load. However, there is evidence that, under certain circumstances, the response of a single parameter may not be a good indicator of structural damage. Likewise, most of the seismic regulations, including the Mexican standards, establish their criteria considering the occurrence of strong earthquakes with a very little probability of occurrence, but do not consider if intense earthquake affects the building frequently and, therefore, cumulative damage due to the occurrence of several earthquakes during the life span of the structure is not taken into account explicitly. This cumulative damage is especially important in places like Mexico City, where intense and long-duration earthquakes occur every 10–20 years. To study the issues that Mexico City must face to increase its seismic resilience, in this article, we present an analysis of the dissipated plastic energy demands in Mexico City during the earthquake of 19 September 2017, and the cumulative damage due to recent intense earthquakes that affect the city.

中文翻译：

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持续时间长、频繁、强烈的地震：从 2017 年 9 月 19 日地震中吸取的经验教训对墨西哥城的复原力

强烈地震期间塑性变形的积累可能会导致结构破坏，变形明显小于在单调载荷下产生的变形。然而，有证据表明，在某些情况下，单个参数的响应可能不是结构损坏的良好指标。同样，大多数地震法规，包括墨西哥标准，都考虑了发生概率很小的强地震的发生，但没有考虑强烈地震是否经常影响建筑物，因此，由于地震造成的累积损坏。没有明确考虑在结构寿命期间发生的多次地震。这种累积损害在墨西哥城等地尤为重要，每 10 到 20 年就会发生一次强烈和持续时间较长的地震。为了研究墨西哥城提高其抗震能力必须面临的问题，在本文中，我们分析了墨西哥城在 2017 年 9 月 19 日地震期间耗散的塑料能源需求，以及近期强烈地震造成的累积破坏。影响城市。