Long‐term seismic monitoring of base‐isolated building with emphasis on serviceability assessment
Long‐term seismic monitoring of base‐isolated building with emphasis on serviceability assessment
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DOI：
10.1002/eqe.2538
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发表时间：
2015-04
影响因子：
4.5
通讯作者：
D. Siringoringo;Y. Fujino
中科院分区：
文献类型：
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作者：
D. Siringoringo;Y. Fujino
地震监测系统提供了观察结构部件可能损坏或失效和弱化的机会，并评估地震期间结构的适用性能。这可以通过比较事件前后的结构记录或通过识别结构响应特征的显着变化来实现，这些变化可以作为正在进行的故障或损坏的指标。结构某些部分的过度振动可能会成为某些建筑物的可用性问题，这也可以通过连续监测来检测。地面运动特征、土壤状况和结构几何形状等多种因素可能会导致过度的局部结构振动，通过评估响应，可以采取补救措施。特别是对于基础隔离的建筑物，减少上层的响应对于保护建筑物上的非结构元件或敏感设备至关重要。在本文中，我们描述了一个基础隔震建筑地震监测的案例研究，主要关注使用性能的评估。该研究强调建筑物不对称性对地震响应的影响。该研究的结果基于 2010 年至 2012 年期间 3 年多的各种地震震级（包括 2011 年 3 月 11 日东日本大地震）下的长期建筑地震监测计划。版权所有 © 2014 约翰·威利父子有限公司
Seismic monitoring system provides opportunities to observe possible damage or failure and weakening of structural components and to evaluate serviceability performance of a structure during an earthquake. This can be achieved by comparing structure recordings before and after the event or by identifying significant change in characteristics of structural response that may serve as indicators of failure or damage in progress. Excessive vibration on some parts of structure may become a serviceability concern for some buildings, and this also can be detected from continuous monitoring. Several factors such as characteristics of ground motion, soil condition, and geometry of the structure could cause excessive localized structural vibration, and by evaluating the responses, one can take remedial action. For a base‐isolated building in particular, reduction of response of upper stories is critical to protect nonstructural elements or sensitive equipments on the building. In this paper, we describe a case study on seismic monitoring of a base‐isolated building with the main focus on evaluation of serviceability performance. The study emphasizes on a influence of building asymmetricity on the seismic response. Results of the study are based on a long‐term building seismic monitoring program for over 3 years between 2010 and 2012 under various amplitudes of earthquake including the March 11, 2011 Great East‐Japan Earthquake. Copyright © 2014 John Wiley & Sons, Ltd.