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Non-Destructive Testing of Drilled Foundations at Cove Point Using Thermal Integrity Profiling

机译：使用热完整性分析在海湾点对钻孔基础进行无损检测

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The Dominion Cove Point LNG Terminal, located in Lusby, Maryland, recently began a $3.8 billion-dollar terminal upgrade to expand capacity and facilitate export capabilities. Given the soil conditions, strict vibration thresholds, and site logistics at the active LNG facility, Dominion and the IHI-Kiewit Cove Point JV selected drilled, cast-in-place elements as the primary foundation type to support temporary/permanent structures. Over 4,750 Auger cast-in-place piles and 700 drilled shafts were installed. Due to the sensitivity of the proposed structures, extensive non-destructive integrity testing (NDT) was required. The initial quality control program included pile echo testing and cross-hole sonic logging (CSL). However, due to site specific limitations, alternative NDT methods were required. Thermal integrity profiling was ultimately selected and the results of large-scale testing highlight this new technology as a highly effective and cost-efficient method of testing drilled, cast-in-place foundations.
机译：位于马里兰州卢斯比的Dominion Cove Point LNG接收站最近开始投资38亿美元的接收站升级，以扩大产能并促进出口能力。考虑到土壤条件，严格的振动阈值以及活跃的液化天然气设施的现场物流，Dominion和IHI-Kiewit Cove Point合资公司选择了钻孔，现浇元件作为支撑临时/永久结构的主要基础类型。安装了4,750多个Auger现场灌注桩和700个钻孔轴。由于所提议结构的敏感性，因此需要进行广泛的无损完整性测试（NDT）。最初的质量控制程序包括桩回波测试和跨孔声波测井（CSL）。但是，由于站点的特定限制，需要使用其他的NDT方法。最终选择了热完整性分析，大规模测试的结果突显了这项新技术，它是一种高效，经济高效的方法来测试钻孔，现浇地基。

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