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Seismic assessment of two multi-tiered pagodas damaged by the 2015 Nepal earthquake
Earthquake Engineering and Engineering Vibration ( IF 2.8 ) Pub Date : 2021-04-12 , DOI: 10.1007/s11803-021-2031-x
Yohei Endo , Toshikazu Hanazato

A seismic assessment of two multi-tier pagodas by numerical analysis is presented herein. The Changu Narayan temple and the Kumbeshwar temple in Nepal are used as the case studies. Both pagodas are built of brick masonry in earthen mortar, with timber columns and crossbeams. The Changu Narayan temple is a two-tier pagoda, and was seriously damaged during the 2015 Gorkha earthquake. The Kumbeshwar temple is a five-tier pagoda, and its top-tier collapsed due to the Gorkha earthquake. A seismic assessment was carried out using finite element (FE) analysis. The FE models were prepared, and dynamic identification tests and penetrometer tests were conducted. Pushover analysis and nonlinear dynamic analysis were performed as part of the seismic assessment. The main shock of the 2015 Gorkha earthquake was considered as the input accelerograms. The behavior between the two pagodas was compared with the collapse mechanisms and damage patterns observed in the actual structures. The comparison suggested common structural features of multi-tier pagodas. This study is dedicated to providing a better understanding of the seismic behavior of multi-tier pagoda-type structures and provides suggestions for their effective analysis.



中文翻译:

对2015年尼泊尔地震造成破坏的两座多层宝塔的地震评估

本文通过数值分析对两个多层塔进行了地震评估。案例研究以尼泊尔的Changu Narayan寺和Kumbeshwar寺为例。这两座塔都是用泥浆砌成的砖石建筑,有木柱和横梁。Changu Narayan寺是一座两层塔,在2015年的Gorkha地震中遭到严重破坏。Kumbeshwar寺是一座五层宝塔,由于戈尔卡地震,其顶层倒塌了。使用有限元(FE)分析进行了地震评估。准备了有限元模型,并进行了动态识别测试和渗透计测试。推覆分析和非线性动力分析是地震评估的一部分。2015年Gorkha地震的主要震荡被视为输入加速度图。将两个宝塔之间的行为与在实际结构中观察到的倒塌机理和破坏模式进行了比较。比较表明多层塔具有共同的结构特征。这项研究致力于更好地了解多层宝塔型结构的抗震性能,并为它们的有效分析提供建议。

更新日期:2021-04-12
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