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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Multihazard framework for investigating high-rise base-isolated buildings under earthquakes and long-duration winds
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Multihazard framework for investigating high-rise base-isolated buildings under earthquakes and long-duration winds

机译：在地震和长期风中调查高层基座隔离建筑的多士巴德框架

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Japan experiences a considerable number of low to medium earthquake shocks and long-duration winds throughout the year, which is relatively more as compared to other different regions of the world. Considering this multihazard scenario, structures designed using the existing guidelines may have significant chances to underestimate the induced distress level in the structure as well as in the energy dissipation devices, which are designed based on traditional peak variables neglecting accumulation of damage. To overcome the shortcoming of the existing assessment technique, a multihazard framework is formulated that deals in estimating probable number of earthquakes and long-duration winds likely to occur in the design life of a structure. The sequence of design earthquakes and long-duration winds obtained through the proposed methodology is subsequently implemented in base-isolated high-rise buildings of two different heights, which are designed based on Japanese standard. Responses are addressed in terms of displacement and acceleration at isolation and top floor level, force-deformation and fatigue damage induced in the isolation devices under individual and multihazard scenarios. Results show that a particular range of building exists that is governed by both earthquake and wind events, and it is recommended that design of such building types should include the effects of both hazards. Moreover, the series of events likely to occur in design life of the buildings induce significant damage in the isolators as compared to the individual hazard event, thereby emphasizing a strong need to develop multihazard framework, where the occurrence rate of such extreme events is relatively higher.
机译：日本在全年中经历了相当数量的低地震休克和长期风，与世界其他不同地区相比相对较多。考虑到这种多危险场景，使用现有指南设计的结构可能具有很大的机会，以低估结构中的诱导困扰水平以及基于传统峰值变量忽略损坏的积累的耗尽装置。为了克服现有评估技术的缺点，制定了一个多血清框架，该框架估计可能在结构的设计寿命中发生的可能发生的地震和长期风。通过所提出的方法获得的设计地震和长持续时间风的序列随后在两个不同高度的基础上的高层建筑中实施，这是根据日本标准设计的。在单独的分离和顶层楼层的位移和加速度方面解决了响应，在个人和多危险场景下隔离装置中诱导的力变形和疲劳损伤。结果表明，存在由地震和风力事件管辖的特定建筑物，建议这种建筑类型的设计应包括两个危险的影响。此外，与个人危险事件相比，建筑物的设计寿命中可能发生的一系列事件可能发生在建筑物的设计寿命中，因此强调强烈需要开发多血清框架，这种极端事件的发生率相对较高。

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