Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SAMPLE AND SAMPLE COLLECTION METHOD
To provide a sample which hardly strains plastically and a sample collection method.SOLUTION: A ground G is excavated to a prescribed depth H1 using a rod 22 fitted to a ground excavation apparatus 20, then a supercooled solution in a supercooled condition (15°C) is injected into the excavated ground. The supercooled solution permeates into the ground G, accordingly a permeated body 30 is formed around the rod 22 and around an excavated hole 22A formed by excavation by the rod 22. After the permeated body 30 is formed to a ground plane GL, a crystallization agent 32 is charged into the excavated hole 22A. The crystallization agent 32 and the supercooled solution in a liquid state forming the permeated body 30 contact each other, so that the supercooled solution is solidified and a solidified body 34 is formed. Then, a part where the solidified body 34 is formed and different from the excavated hole 22A is excavated using the rod 24. The rod 24 is constituted of a double tube, the ground G is cut by rotation cutting by a bit formed on a tip of an outer tube, and an inner tube (core tube) which does not rotate is pushed into the ground G and a columnar sample is collected.SELECTED DRAWING: Figure 5
【課題】塑性歪みが生じ難い供試体及び供試体採取方法を提供する。【解決手段】まず地盤掘削装置２０に取付けられたロッド２２を用いて地盤Ｇを所定の深さＨ１まで掘削した後、過冷却状態（１５℃）の過冷却溶液を注入する。過冷却溶液が地盤Ｇに浸透することで、ロッド２２及びロッド２２により掘削された掘削孔２２Ａの周囲に浸透体３０が形成される。浸透体３０を地盤面ＧＬまで形成した後、掘削孔２２Ａへ結晶剤３２を投入する。この結晶剤３２と、浸透体３０を形成する液体状態の過冷却溶液とが接触すると、過冷却溶液が固化し、固化体３４が形成される。続いて、ロッド２４を用いて、固化体３４が形成された部分で、かつ、掘削孔２２Ａと異なる部分を掘削する。ロッド２４は二重管で構成されており、外管の先端に形成されたビットで地盤Ｇを回転切削し、回転しない内管（コアチューブ）を地盤Ｇへ押し込み円柱状の供試体を採取する。【選択図】図５
SAMPLE AND SAMPLE COLLECTION METHOD
To provide a sample which hardly strains plastically and a sample collection method.SOLUTION: A ground G is excavated to a prescribed depth H1 using a rod 22 fitted to a ground excavation apparatus 20, then a supercooled solution in a supercooled condition (15°C) is injected into the excavated ground. The supercooled solution permeates into the ground G, accordingly a permeated body 30 is formed around the rod 22 and around an excavated hole 22A formed by excavation by the rod 22. After the permeated body 30 is formed to a ground plane GL, a crystallization agent 32 is charged into the excavated hole 22A. The crystallization agent 32 and the supercooled solution in a liquid state forming the permeated body 30 contact each other, so that the supercooled solution is solidified and a solidified body 34 is formed. Then, a part where the solidified body 34 is formed and different from the excavated hole 22A is excavated using the rod 24. The rod 24 is constituted of a double tube, the ground G is cut by rotation cutting by a bit formed on a tip of an outer tube, and an inner tube (core tube) which does not rotate is pushed into the ground G and a columnar sample is collected.SELECTED DRAWING: Figure 5
【課題】塑性歪みが生じ難い供試体及び供試体採取方法を提供する。【解決手段】まず地盤掘削装置２０に取付けられたロッド２２を用いて地盤Ｇを所定の深さＨ１まで掘削した後、過冷却状態（１５℃）の過冷却溶液を注入する。過冷却溶液が地盤Ｇに浸透することで、ロッド２２及びロッド２２により掘削された掘削孔２２Ａの周囲に浸透体３０が形成される。浸透体３０を地盤面ＧＬまで形成した後、掘削孔２２Ａへ結晶剤３２を投入する。この結晶剤３２と、浸透体３０を形成する液体状態の過冷却溶液とが接触すると、過冷却溶液が固化し、固化体３４が形成される。続いて、ロッド２４を用いて、固化体３４が形成された部分で、かつ、掘削孔２２Ａと異なる部分を掘削する。ロッド２４は二重管で構成されており、外管の先端に形成されたビットで地盤Ｇを回転切削し、回転しない内管（コアチューブ）を地盤Ｇへ押し込み円柱状の供試体を採取する。【選択図】図５
SAMPLE AND SAMPLE COLLECTION METHOD
供試体及び供試体採取方法
TANIGAWA TOMOHIRO (Autor:in) / IIDA YOSHITAKA (Autor:in) / SHIMIZU TAKAAKI (Autor:in) / OKUMURA TAKEHIRO (Autor:in) / KIYOTOMO HARUKA (Autor:in)
24.06.2019
Patent
Elektronische Ressource
Japanisch
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