Examining the impact of lahars on buildings using numerical modelling
Examining the impact of lahars on buildings using numerical modelling
复制标题
使用数值模型检查火山泥流对建筑物的影响
DOI：
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
M. Prakash
中科院分区：
文献类型：
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作者：
S. Mead;C. Magill;V. Lemiale;J. Thouret;M. Prakash
抽象的。火山泥流是含有流体和沉积物混合物的火山流，有可能对建筑物、关键基础设施和人类生命造成重大损害。这种损害的程度由拉哈尔的性质、危险元素的位置以及这些元素对拉哈尔的敏感性控制。在这里，我们专注于了解火山泥流引起的建筑物损坏。由于拉哈尔行为（危害）的复杂性，暴露于拉哈尔（暴露）的建筑物的数量和类型不同，以及建筑物对拉哈尔影响（脆弱性）的敏感性不确定，因此难以量化建筑物的损害。在本文中，我们量化和检查的重要性，拉哈尔的危害，暴露和脆弱性，在确定建筑物的损害，在城市的阿雷基帕，秘鲁的案例研究。数值模拟是用来调查拉哈尔属性，是重要的，在确定淹没区和部队适用于建筑物。通过基于砌体结构极限弯矩的临界深度-压力曲线的发展来量化建筑物的脆弱性。在案例研究领域，结果表明，建筑强度起着较小的作用，在确定整体建筑物的损失相比，建筑物暴露和水力特性的拉哈尔的影响。
Abstract. Lahars are volcanic flows containing a mixture of fluid and sediment which have the potential to cause significant damage to buildings, critical infrastructure and human life. The extent of this damage is controlled by properties of the lahar, location of elements at risk and susceptibility of these elements to the lahar. Here we focus on understanding lahar-induced building damage. Quantification of building damage can be difficult due to the complexity of lahar behaviour (hazard), varying number and type of buildings exposed to the lahar (exposure) and the uncertain susceptibility of buildings to lahar impacts (vulnerability). In this paper, we quantify and examine the importance of lahar hazard, exposure and vulnerability in determining building damage with reference to a case study in the city of Arequipa, Peru. Numerical modelling is used to investigate lahar properties that are important in determining the inundation area and forces applied to buildings. Building vulnerability is quantified through the development of critical depth–pressure curves based on the ultimate bending moment of masonry structures. In the case study area, results suggest that building strength plays a minor role in determining overall building losses in comparison to the effects of building exposure and hydraulic characteristics of the lahar.
制定火山泥流的建筑损坏量表：应用于印度尼西亚默拉皮火山
影响因子：
3.5
作者：
Jenkins S
通讯作者：
Jenkins S