Tsunami analytical fragility curves for the Colombian Pacific coast: A reinforced concrete building example. Engineering Structures
Tsunami analytical fragility curves for the Colombian Pacific coast: A reinforced concrete building example. Engineering Structures
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哥伦比亚太平洋海岸海啸分析脆弱性曲线：钢筋混凝土建筑示例。
DOI：
10.1016/j.engstruct.2019.109309
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发表时间：
2019
影响因子：
5.5
通讯作者：
B.
中科院分区：
文献类型：
--
作者：
Medina;S.;Lizarazo-Marriaga;J.;Estrada;M.;Koshimura;S.;Mas;E.;& Adriano;B.
从太平洋上最近发生的大地震运动来看，海啸很有可能摧毁海岸上的建筑物。从这个意义上说，虽然在上个世纪，哥伦比亚太平洋沿岸沿着发生了几次地震，并引发了海啸，但没有当地数据可以量化未来地震可能对附近城市造成的实际损害。为了建立工具，以提高沿着厄瓜多尔太平洋沿岸的风险管理能力，本文总结了一项研究，旨在描述一种新的综合方法来获得脆弱性曲线的海啸风险的当地建筑物。这一任务是使用计算非线性结构分析，结合蒙特卡罗统计算法，以获得数值概率脆弱性曲线。建筑物的结构能力是通过非线性结构模拟得到的，然后用有限元法计算每栋建筑物的损伤。两种不同的损坏模型来估计损坏的概率进行了测试，以评估一个更好地代表建筑物的结构行为，其中海啸被认为是在结构模型中的力分散到不同的高度，从而代表不同的流动深度。因此，开发了一种方法来计算哥伦比亚太平洋沿岸典型结构的理论概率脆弱性曲线，尽管这种方法可以扩展到世界任何地区的任何结构系统。作为一个说明性的例子，在这项研究中提出的方法被应用到一个典型的钢筋混凝土建筑，从以前的工作中，所有的图马科城市建筑物的特点，根据其结构特征。
From the last large seismic movements generated in the Pacific Ocean, it has been demonstrated that tsunamis have a high potential of destruction of buildings on the coasts. In that sense, although along the Pacific Colombian coast several earthquakes that have generated tsunami were reported during the last century, there are no local data to quantify the physical damage that future events could produce on nearby cities. For the purpose of establishing tools to increase the risk management capabilities along the Colombian-Ecuadorian Pacific Coast, this paper summarizes a research aimed to describe a new integrated methodology to obtain fragility curves for local buildings at risk of a tsunami. This task was accomplished using computational nonlinear structural analysis, combined with a Monte Carlo statistical algorithm to obtain numerical probabilistic fragility curves. The structural capacity of buildings was obtained from nonlinear structural simulations using the finite element method, to calculate later the damage of each building. Two different damage models to estimate the probability of damage were tested in order to evaluate the one that better represents the structural behavior of buildings, in which the tsunami was considered in the structural model as forces scattered to different heights, thus representing different flow depths. As a result, a methodology was developed to calculate theoretical probabilistic fragility curves for the typical structures found in the Colombian Pacific coast, although this methodology could be expanded to any structural system located in any region around the world. As an illustrative example, the methodology proposed in this research was applied to a typical reinforced concrete building, obtained from a previous work in which all the Tumaco city buildings were characterized according to their structural features.