Applicability of the Simplified Analysis and Relevant Calculations to Evaluating Uplift Displacement of Unanchored Tanks
Applicability of the Simplified Analysis and Relevant Calculations to Evaluating Uplift Displacement of Unanchored Tanks
复制标题
简化分析及相关计算在评估非锚定储罐抬升位移中的适用性
DOI：
10.1115/pvp2018-84239
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Hatayama Ken
中科院分区：
文献类型：
--
作者：
Taniguchi Tomoyo;Yoshida Yuichi;Hatayama Ken
无锚圆柱形储罐在地面加速度作用下的摇摆运动是此类结构地震易损性评估的主要内容。然而，尽管锚固或未锚固的罐，任何计算，试图充分评估罐的隆起还没有提出，而许多分析的罐摇摆运动和罐底板的变形已经分别提出。本文进行了一个思想实验，这些分析的适用性评估浮罐的隆起。首先，本文以2011年日本东北部太平洋地震中锚栓被拔出的化工厂锚定储罐为研究对象。其次，结合联合收割机的几个分析的非锚固罐目前可用的，然后，计算一个锚定罐的隆起位移，如果它是一个非锚固罐。其次，根据勘察报告中的照片推断出感兴趣的锚固储罐的锚栓的拔出长度，然后与计算出的上拔位移进行比较。由于计算的上拔位移大于推测的上拔位移。由于它们之间的差异将负责尚未明确量化的锚的约束效果，目前的分析罐摇摆运动和罐底板的变形可能有可能给一个适当的隆起的非锚固罐。
Evaluation of the rocking motion of unanchored cylindrical tanks subjected to the ground acceleration is a main topic in the framework of the seismic vulnerability assessment of this particular kind of structures. However, despite the anchored or unanchored tanks, any calculation that attempts fully evaluate tank uplift has not been presented, while many of the analyses of the tank rocking motion and the deformation of the tank bottom plate have been respectively presented. This paper carries out a thought experiment of applicability of these analyses to evaluating uplift of the unanchored tanks. First, this paper focuses on an anchored tank at a chemical plant whose anchor bolts were pulled-out during the 2011 off the pacific coast of Tohoku Earthquake. Second, combine a few analyses of uplift of the unanchored tanks being available to date; then, calculate the uplift displacement of an anchored tank of interest as if it were an unanchored tank. Next, infer the pulling-out length of anchor bolt of the anchored tank of interest from a photo in a reconnaissance report; then, compare it with the uplift displacement calculated. Since the uplift displacement calculated is larger than that inferred. Since a discrepancy between them would be responsible for the constraint effects of anchors that have not been clearly quantified, the present analyses of the tank rocking motion and the deformation of the tank bottom plate may have a potential to give an appropriate uplift of unanchored tanks.