Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DEEP LAYER MIXING APPARATUS
PROBLEM TO BE SOLVED: To provide a deep layer mixing apparatus which can establish a desired columnar improvement body easily by dissolving excessive pressure generated in an agitation mixing part as excess pressure and reducing displacement applied to the side part.SOLUTION: A deep layer mixing apparatus that forms a columnar improvement body by injecting and agitating a solidification material in a soft ground comprises: a rod 20 which has a middle pipe with an excavation tooth 23 and a solidification material discharge port at the lowermost end part and an outer pipe installed outside the middle pipe and which rotationally drives the middle pipe and the outer pipe in the contrary direction mutually; an agitation mixing part 26 which has a middle pipe agitating blade 27 installed at the lower end of the rod 20 and rotating integrally with the middle pipe and an outer pipe agitating blade 28 rotating integrally with the outer pipe and which agitates and mixes an excavated ground and a solidification material; and an outer pipe spiral blade 30 which is installed in the outer peripheral surface of the outer pipe so as to rotate integrally with the outer pipe and which guides to the upper part in a longer direction of the rod 20 a part of excessive pressure generated by in-situ soil and an injected solidification material mixed in the agitation mixing part 26 for dissipation.SELECTED DRAWING: Figure 13
【課題】攪拌混合部内に発生する過剰な圧力を余剰圧力として解消して、側方に与える変位を減少しつつ、所望する円柱状をした改良体を容易に造成できる深層混合処理装置を提供する。【解決手段】軟弱地盤に固化材を注入攪拌して円柱状の改良体を形成する深層混合処理装置において、最下端部に掘削歯２３及び固化材吐出口が設けられた中管と該中管の外側に装着された外管とを有し、中管と外管とが互いに相反する方向に回転駆動されるロッド２０と、ロッド２０の下端部に設けられていると共に中管と一体に回転する中管攪拌翼２７と外管と一体に回転する外管攪拌翼２８とを有し、掘削された地盤と固化材とを攪拌混合する攪拌混合部２６と、外管と一体回転可能に外管の外周面に設けられ、攪拌混合部２６内で混合された原位置土と注入された固化材により発生した過剰な圧力の一部を、ロッド２０の長手方向上方へ誘導して消散する外管螺旋翼３０と、を設けた。【選択図】図１３
DEEP LAYER MIXING APPARATUS
PROBLEM TO BE SOLVED: To provide a deep layer mixing apparatus which can establish a desired columnar improvement body easily by dissolving excessive pressure generated in an agitation mixing part as excess pressure and reducing displacement applied to the side part.SOLUTION: A deep layer mixing apparatus that forms a columnar improvement body by injecting and agitating a solidification material in a soft ground comprises: a rod 20 which has a middle pipe with an excavation tooth 23 and a solidification material discharge port at the lowermost end part and an outer pipe installed outside the middle pipe and which rotationally drives the middle pipe and the outer pipe in the contrary direction mutually; an agitation mixing part 26 which has a middle pipe agitating blade 27 installed at the lower end of the rod 20 and rotating integrally with the middle pipe and an outer pipe agitating blade 28 rotating integrally with the outer pipe and which agitates and mixes an excavated ground and a solidification material; and an outer pipe spiral blade 30 which is installed in the outer peripheral surface of the outer pipe so as to rotate integrally with the outer pipe and which guides to the upper part in a longer direction of the rod 20 a part of excessive pressure generated by in-situ soil and an injected solidification material mixed in the agitation mixing part 26 for dissipation.SELECTED DRAWING: Figure 13
【課題】攪拌混合部内に発生する過剰な圧力を余剰圧力として解消して、側方に与える変位を減少しつつ、所望する円柱状をした改良体を容易に造成できる深層混合処理装置を提供する。【解決手段】軟弱地盤に固化材を注入攪拌して円柱状の改良体を形成する深層混合処理装置において、最下端部に掘削歯２３及び固化材吐出口が設けられた中管と該中管の外側に装着された外管とを有し、中管と外管とが互いに相反する方向に回転駆動されるロッド２０と、ロッド２０の下端部に設けられていると共に中管と一体に回転する中管攪拌翼２７と外管と一体に回転する外管攪拌翼２８とを有し、掘削された地盤と固化材とを攪拌混合する攪拌混合部２６と、外管と一体回転可能に外管の外周面に設けられ、攪拌混合部２６内で混合された原位置土と注入された固化材により発生した過剰な圧力の一部を、ロッド２０の長手方向上方へ誘導して消散する外管螺旋翼３０と、を設けた。【選択図】図１３
DEEP LAYER MIXING APPARATUS
深層混合処理装置
KIKUCHI TAKEHIKO (Autor:in) / KUMA TENKO (Autor:in)
17.08.2017
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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