Fragility curves for structures under tsunami loading
Fragility curves for structures under tsunami loading
复制标题
海啸荷载下结构的脆性曲线
DOI：
10.1007/s11069-015-1978-1
复制
发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
W. Dias
中科院分区：
文献类型：
--
作者：
K. Nanayakkara;W. Dias
摘要
结构损坏的敏感性可以用脆弱性曲线来表征，该曲线表示为对于给定的需求参数值，达到或超过特定损坏状态的条件概率的正态或对数正态累积分布。此类曲线针对世界不同地区遭受海啸载荷的不同类别建筑物的各种损坏状态而生成，需求参数被视为淹没深度。这些研究寻求就中位淹没深度进行协调。根据建筑材料，单层建筑分为三类：钢筋混凝土、砖石和木材。完全损坏状态的中位淹没深度从钢筋混凝土（5.4-7.3 m）到砖石结构（2.3-2.5 m）再到木结构（~1.6 m）下降。上面相当窄的范围代表了许多不同的研究，并表明可以得到一个共同的曲线族或“带”。对于其他部分损坏状态也确定了这样的范围。我们真正的原创贡献是使用蒙特卡罗模拟开发的概率模型，为海啸荷载下的砖石和钢筋混凝土结构生成综合脆弱性函数。概率模型由捕获建筑地块几何和墙体类型变化的几何模型、载荷函数和一组失效准则组成，所有这些都需要适当的简化假设。所得的合成脆性曲线与基于观测到的完全倒塌损坏状态的海啸损坏的脆性曲线相当吻合。
Abstract
Susceptibility to structural damage can be characterized by a fragility curve, which is expressed as a normal or lognormal cumulative distribution of the conditional probabilities of reaching or exceeding a particular damage state, for given values of the demand parameter. Such curves have been produced for a variety of damage states in different categories of buildings exposed to tsunami loading in different parts of the world, with the demand parameter taken as inundation depth. Harmonization was sought across these studies with respect to the median inundation depth. Three categories of single-storey buildings were identified based on construction material, namely reinforced concrete, masonry and timber. The median inundation depths for the complete damage state decreased from reinforced concrete (5.4–7.3 m) through masonry (2.3–2.5 m) to timber (~1.6 m) structures. The fairly narrow ranges above represent a number of different studies and indicate that a common family of curves or “bands” can be arrived at. Such ranges were identified for other partial damage states too. Our genuinely original contribution is a probabilistic model that was developed using a Monte Carlo simulation to produce synthetic fragility functions for masonry and reinforced concrete structures under tsunami loading. The probabilistic model consisted of a geometric model that captured the geometrical and wall-type variations of the building lot, a loading function and a set of failure criteria, all of which required appropriate simplifying assumptions. The resulting synthetic fragility curves matched the fragility curves based on observed tsunami damage for the complete collapse damage state reasonably well.
2010 年 2 月智利地震引发的海啸席卷日本海岸
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
Satake;K
通讯作者：
K
基于卫星遥感和 2004 年泰国印度洋海啸数值模拟开发海啸脆弱性曲线
DOI：
--
发表时间：
2011
期刊：
Developing tsunami fragility curves based on the satellite remote sensing and the numerical modeling of the 2004 Indian Ocean tsunami in Thailand
影响因子：
--
作者：
Suppasri;S.Koshimura;F.Imamura
通讯作者：
F.Imamura