An Evaluation of Uplifting Behavior of Container Cranes Under Strong Earthquakes.
An Evaluation of Uplifting Behavior of Container Cranes Under Strong Earthquakes.
复制标题
强震下集装箱起重机的举升行为评估。
DOI：
10.1299/kikaic.64.480
复制
发表时间：
1998
期刊：
影响因子：
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通讯作者：
A. Kashiwazaki
中科院分区：
文献类型：
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作者：
Tadafumi Kanayama;A. Kashiwazaki
集装箱起重机在强震中经常出现腿部上浮现象，并被认为是造成结构破坏的主要原因之一。然而，这种行为的强烈非线性阻碍了我们在集装箱起重机的设计中将其考虑在内。为此，我们对一台1/25比例的集装箱起重机模型进行了有限元分析和激振试验，以期开发一种模拟这种行为的方法。结果表明，采用间隙单元的非线性有限元方法是模拟上拔行为的一种有效方法。并对一台实际的集装箱起重机进行了有限元分析。这些结果表明，隆起引起的腿部变形是造成结构破坏的一个原因，实际上就像在Hyogoken Nanbu地震中看到的那样。
Uplifting of legs of container cranes is often observed in strong earthquakes, and assumed to be one of the main causes of their structural damage. However, strong nonlinearity of such behavior has prevented us from taking it into consideration in the design of container cranes. Therefore, in order to develop a method to simulate the behavior, we carried out finite element analyses and excitation tests on a 1/25 scale model of a container crane. Comparing those results, we proved that nonlinear finite element method with gap elements is an effective method to simulate the uplifting behavior. Furthermore, we carried out finite element analyses on an actual container crane. Those result showed that the deformation of legs due to uplifting is a cause of structural damage, as actually seen in the Hyogoken Nanbu Earthquake.