The Spatial Distribution of Liquefaction Susceptibility by Logistic Regression Model adapted for Adapazari, Turkey

IF 0.8 4区 工程技术 Q4 ENGINEERING, CIVIL Teknik Dergi Pub Date : 2020-03-01 DOI:10.18400/tekderg.445322
A. Mert, E. Arel, Akın Önalp
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引用次数: 1

Abstract

A logistic regression model has been developed for evaluation of soil liquefaction by the use of cone penetration test (CPTu, PCPT) on data collected from Adapazari, Turkey. The model inputs are the clean sand equivalent normalized cone tip resistance ( q c1N,cs ) and cyclic stress ratio corrected for moment magnitude of 7.5 earthquake ( CSR M=7.5 ) that was experienced in 1999. Liquefaction probabilities ( P L ) are obtained for each district of the city for which CPTu data is available with the proposed logistic regression model. Average liquefaction probabilities of the depth interval 0-6 m and coordinates (Longitude, Latitude) of CPT soundings were plotted to construct a liquefaction probability map by longitude and latitude. In order to show the effect of depth in liquefaction potential, the obtained liquefaction probability contours were reconstructed by dividing 0-6m depth into three narrow sublayers of 0-2m, 2-4m and 4-6m wherein liquefaction was observed during the earthquake. For each depth interval, liquefaction probabilities of the districts are compared with the observed liquefied and non-liquefied sites in the city after 1999 Adapazari Earthquake.
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基于Logistic回归模型的土耳其阿达帕扎里液化易感性空间分布
利用锥入试验(CPTu, PCPT)对土耳其阿达帕扎里收集的数据,建立了一个用于评估土壤液化的逻辑回归模型。模型输入为1999年经历的7.5级地震(CSR M=7.5)弯矩修正后的净砂等效归一化锥尖阻力(q c1N,cs)和循环应力比。利用提出的逻辑回归模型,获得了CPTu数据可用的城市每个地区的液化概率(pl)。绘制深度区间0 ~ 6 m的平均液化概率和CPT测深坐标(经纬度),构建经纬度液化概率图。为了显示深度对液化势的影响,将得到的液化概率等值线重构,将0-6m深度划分为0-2m、2-4m和4-6m三个窄子层,在地震中观测到液化。对于每个深度区间,将各区的液化概率与1999年阿达帕扎里地震后观测到的城市液化和非液化场址进行了比较。
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来源期刊
Teknik Dergi
Teknik Dergi 工程技术-工程:土木
自引率
30.80%
发文量
65
审稿时长
>12 weeks
期刊介绍: The scope of Teknik Dergi is naturally confined with the subjects falling in the area of civil engineering. However, the area of civil engineering has recently been significantly enlarged, even the definition of civil engineering has somewhat changed. Half a century ago, engineering was simply defined as “the art of using and converting the natural resources for the benefit of the mankind”. Today, the same objective is expected to be realised (i) by complying with the desire and expectations of the people concerned and (ii) without wasting the resources and within the sustainability principles. This change has required an interaction between engineering and social and administrative sciences. Some subjects at the borderline between civil engineering and social and administrative sciences have consequently been included in the area of civil engineering. Teknik Dergi defines its scope in line with this understanding. However, it requires the papers falling in the borderline to have a significant component of civil engineering.
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