A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VACUUM CONSOLIDATION METHOD AND DRAIN MATERIAL
PROBLEM TO BE SOLVED: To provide a vacuum consolidation method that can prevent the occurrence of a negative pressure loss in a sand layer and prevent a decrease of a vacuum consolidation effect in the vacuum consolidation using a placed drain material, when a surface layer of the ground for an improvement target is constituted of a sand layer with a ground water level surface, and provide a drain material of that purpose.SOLUTION: This vacuum consolidation method performs vacuum consolidation by placing a drain material 11 on the ground for an improvement target, laying an airtight sheet 12 so as to cover a ground surface S of the ground G, and applying a negative pressure to the drain material. When a sand layer G2 exists in a surface layer of the ground and a ground water level surface H exists in the sand layer, a blocking part 13 for interrupting a flow of water in the inside of the drain material is provided in the drain material positioned in the sand layer deeper than the ground water level surface.SELECTED DRAWING: Figure 1
【課題】改良対象の地盤の表層が地下水位面の存在する砂層で構成されている場合、打設されたドレーン材を用いて真空圧密を行う際に砂層における負圧損失の発生を防止し真空圧密効果の低下を防止可能な真空圧密工法およびそのためのドレーン材を提供する。【解決手段】この真空圧密工法は、改良対象の地盤にドレーン材１１を打設し、地盤Ｇの地表面Ｓを覆うように気密シート１２を敷設し、ドレーン材に負圧を作用させて真空圧密を行うもので、地盤の表層に砂層Ｇ２が存在し、その砂層内に地下水位面Ｈがある場合、地下水位面よりも深い砂層に位置するドレーン材にドレーン材内部における水の流れを遮断するための遮断部１３を設けた。【選択図】図１
VACUUM CONSOLIDATION METHOD AND DRAIN MATERIAL
PROBLEM TO BE SOLVED: To provide a vacuum consolidation method that can prevent the occurrence of a negative pressure loss in a sand layer and prevent a decrease of a vacuum consolidation effect in the vacuum consolidation using a placed drain material, when a surface layer of the ground for an improvement target is constituted of a sand layer with a ground water level surface, and provide a drain material of that purpose.SOLUTION: This vacuum consolidation method performs vacuum consolidation by placing a drain material 11 on the ground for an improvement target, laying an airtight sheet 12 so as to cover a ground surface S of the ground G, and applying a negative pressure to the drain material. When a sand layer G2 exists in a surface layer of the ground and a ground water level surface H exists in the sand layer, a blocking part 13 for interrupting a flow of water in the inside of the drain material is provided in the drain material positioned in the sand layer deeper than the ground water level surface.SELECTED DRAWING: Figure 1
【課題】改良対象の地盤の表層が地下水位面の存在する砂層で構成されている場合、打設されたドレーン材を用いて真空圧密を行う際に砂層における負圧損失の発生を防止し真空圧密効果の低下を防止可能な真空圧密工法およびそのためのドレーン材を提供する。【解決手段】この真空圧密工法は、改良対象の地盤にドレーン材１１を打設し、地盤Ｇの地表面Ｓを覆うように気密シート１２を敷設し、ドレーン材に負圧を作用させて真空圧密を行うもので、地盤の表層に砂層Ｇ２が存在し、その砂層内に地下水位面Ｈがある場合、地下水位面よりも深い砂層に位置するドレーン材にドレーン材内部における水の流れを遮断するための遮断部１３を設けた。【選択図】図１
VACUUM CONSOLIDATION METHOD AND DRAIN MATERIAL
真空圧密工法およびドレーン材
KUMAGAI TAKAHIRO (author) / TAKADA KOICHI (author)
2017-01-05
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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