Dynamic responses of six multistory buildings during the San Fernando earthquake
Dynamic responses of six multistory buildings during the San Fernando earthquake
复制标题
圣费尔南多地震期间六座多层建筑的动态响应
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
P. C. Jennings
中科院分区：
文献类型：
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作者：
D. Foutch;G. Housner;P. C. Jennings
抗震设计最佳方法的开发取决于对地震期间地面如何震动以及真实建筑物如何振动的了解。 1971 年 2 月 9 日发生的圣费尔南多地震发生在一个拥有良好记录地面震动和建筑物振动仪器的地区，因此获得了许多记录来说明地震地面运动的工程特征及其影响。这次里氏6. 5级地震的震中位于洛杉矶都会区的北缘。尽管从地震学的角度来看，这次地震并不是大地震，但它产生了非常强烈的地面震动，因此对工程师来说是一个重要事件。由此造成的损失估计超过 5 亿美元，为建筑物、桥梁、织补和其他设施的设计提供了宝贵的工程经验；关于圣费尔南多地震对各种结构影响的许多专门研究已经发表。 1-6 震动触发了 272 个加速度计，并记录了 241 个加速度图。这些记录提供了有关强烈地面运动和结构响应特征的宝贵信息，并使评估现代建筑在强震期间的测量性能成为可能。
圣费尔南多地震对于结构工程师来说特别重要，因为它提供了现代多层建筑对强地震反应的第一个记录样本。测量了 50 多座建筑物的响应，其中大部分位于洛杉矶市，并按照建筑规范要求在地下室、中间高度和屋顶安装了加速度计。
The development of optimal methods of earthquake resistant design depends on a knowledge of how the ground shakes and how real buildings oscillate during earthquakes. The San Fernando earthquake of February 9, 1971 occurred in a region well instrumented to record ground shaking and building vibration and, as a consequence, many records were obtained that illustrate the engineering features of earthquake ground motion and its effects. The magnitude 6. 5 earthquake was centered on the northern edge of the Los Angeles Metropolitan area. Although the shock was not a great earthquake in seismological terms, it produced very strong ground shaking and, therefore, was an important event for engineers. The resulting damage, estimated at over $500 million, provided valuable engineering lessons concerning the design of buildings, bridges, darns, and other facilities; and numerous special studies of the effects of the San Fernando earthquake on various structures have been published. 1-6 The shock triggered 272 accelerographs, and 241 accelerograms were recorded. These records provide valuable information about the characteristics of strong ground motions and structural responses, and make it possible to evaluate the measured performance of modern buildings during strong earthquakes.
The San Fernando earthquake was of special importance to structural engineers since it provided the first sample of recorded responses of modern multistoried buildings to strong earthquake motions. The responses of more than 50 buildings were measured, most of which were located in the city of Los Angeles, and had accelerographs in the basement, at mid-height, and on the roof in accordance with building code requirements.