報告書番号

382031

タイトル（和文）

凍結砂の力学特性

タイトル（英文）

MECHANICAL PROPERTIES OF FROZEN SANDS

概要 （図表や脚注は「報告書全文」に掲載しております）

ＬＮＧ地下タンク周辺地盤の凍結によってタンクに作用する凍結土圧を解析的に検討する際に必要な凍結土の力学特性のデータを求めるために，６種類の砂を用いて，一軸圧縮試験を実施した。その結果と既往の研究をまとめた結果を整理して，種々の要因と凍結砂の力学特性の関係を把握し，今後の地下タンクの設計に役立つ凍結砂の力学特性のデータを得た。

概要 （英文）

IN RECENT YEARS,THERMAL POWER PLANTS USING LIQUEFIED NATURAL GAS(LNG)AS FUEL HAVE BEEN CONSTRUCTED AND ARE BEING PLANNED ONE AFTER ANOTHER SINCE THEIR EXHAUST GAS POLLUTION BY COMBUTION IS LOW. HOWEVER,THE GROUND AROUND THE TANK WILL INEVITABLY BE FROZEN UNLESS THE GROUND IS HEATED.THE FROZEN GROUND AROUND THE TANK CAUSES STRONG FROZEN EARTH PRESSURE TO ACT ON THE BODY OF THE TANK AND IS EXPECTEDTO LOWER THE SAFETY OF THE TANK BODY. IN THIS REPORT,THE RELATIONS BETWEEN THE MECHANICAL PROPERTIES OF FROZEN SOIL WHICH ARE NECESSARY FOR ANALYSIS OF EARTH PRESSURE CAUSED BY THE FROZEN GROUND AROUND LNG TANKS AND PARAMETERS LIKE TEMPERATURES,VOID RATIO,SALINITY AND OTHERS,ARE EXPERIMENTALLY OBTAINED.THE TEST RESULTS ARE OBTAINED FROM THE UNCONFINED COMPRESSIVE TEST USED SIX KINDS OF SAND.

報告者

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