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首页> 外文期刊>Indian Geotechnical Journal >Assessment of Seismic Liquefaction of Soil Site at Mundra Port, India, Using CPT and DMT Field Tests
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Assessment of Seismic Liquefaction of Soil Site at Mundra Port, India, Using CPT and DMT Field Tests

机译：利用CPT和DMT现场测试评估Mundra Port港土壤场地地震液化的评价

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摘要

Cyclic soil liquefaction in the past has resulted in severe damage to structures and lifeline services. Mostly, standard penetration test and cone penetration test (CPT) are used for evaluation of liquefaction; however, the dilatometer test (DMT) is better suitable due to its ability to detect soil stress history and aging. This study aims to compare the DMT-based cyclic resistance ratio (CRR) correlations available in the literature with well-established CPT-based CRR correlation at a site in Mundra, Gujarat, that had moderately liquefied in 2001 during the Bhuj earthquake. The available earthquake history is scaled using attenuation relationship for Peninsular India, and the peak ground acceleration is assessed by ground response analysis using the CPT data. The factor of safety (FSL) against liquefaction is evaluated using field data obtained from CPT and DMT. Also, Liquefaction Potential Index (LPI), settlement (S) and Liquefaction Severity Number (LSN) are evaluated to determine the consequence of liquefaction, and the performance of the foundations supported on liquefied soil. The results verify the liquefaction damage observed in 2001 during the Bhuj earthquake and indicate that the site possesses a moderate risk of liquefaction. It shows that the site is susceptible to minor to moderate consequences of liquefaction, such as sand boils and small damage to existing structures. It also indicates that the CPT-based CRR correlation is conservative compared to DMT-based CRR correlation and warrants the use of independent DMT-based CRR correlations or use of at least two methods to assess liquefaction at critical sites.
机译：过去的循环土壤液化导致结构和生命线服务严重损害。主要是，标准渗透试验和锥形渗透试验（CPT）用于评估液化;然而，由于其检测土壤应力历史和老化的能力，膨胀计试验（DMT）更好。本研究旨在比较文献中可用的基于DMT的循环电阻比（CRR）相关性，并在Bujarat在2001年在2001年在Bhuj地震期间在2001年进行了适度液化的基于CPT相关的基于CPT相关的相关性。可用的地震历史使用PenInsular India的衰减关系来缩放，并且通过使用CPT数据进行地面响应分析评估峰接地加速度。使用从CPT和DMT获得的现场数据进行评估安全性（FSL）对液化的因子。此外，评价液化电位指数（LPI），沉降和液化严重性数（LSN）以确定液化的结果，以及液化土的基础的性能。结果验证了在Bhuj地震期间2001年观察到的液化损伤，并表明该网站具有适度的液化风险。结果表明，该部位易于缩小液化的中等后果，例如砂沸腾和对现有结构的损害小。它还表明，与基于DMT的CRR相关性相比，基于CPT的CRR相关性是保守的，并且需要使用独立的DMT基CRR相关或使用至少两种方法来评估关键位点的液化。

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