Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
GROUND IMPROVEMENT METHOD AFTER REMOVAL OF EXISTING PILE
To provide a ground improvement method by which strength characteristics of a backfilled ground in which a pile hole is backfilled and strength characteristics of a surrounding ground are made approximately equal to each other.SOLUTION: A ground improvement method after removal of an existing pile 10 comprises: a water content setting step of setting a water content of mud 150 stirred and mixed with an injection material 120 by an auger screw 200 by regarding that water 124 is filled into a pile hole 50 after removal; a test step of producing an adjusted test mud, a specimen with a changed mixture ratio of the injection material 120 and a water-cement ratio of the injection material 120 and performing a test including measurement of uniaxial compressive strength; an injection material setting step of setting the water-cement ratio of the injection material 120 and an injection amount of the injection material 120 based on test results in the test step so that strength characteristics of a backfilled ground 130 in which the pile hole 50 is backfilled is made approximately equal to strength characteristics of a surrounding ground 102; and a backfilling step of injecting the injection material 120 with the set water-cement ratio so as to be the injection amount and stirring and mixing by the auger screw 200 to backfill the hole.SELECTED DRAWING: Figure 1
【課題】杭孔を埋め戻した埋戻地盤の強度特性と周辺地盤の強度特性とを同等にする地盤改良方法を提供する。【解決手段】既存杭１０の撤去後の地盤改良方法は、注入材１２０とオーガースクリュー２００で撹拌混合する泥土１５０の含水比を、撤去された後の杭孔５０に水１２４が充填されたとして設定する含水比設定工程と、調整された試験用泥土と、注入材１２０との混合割合と、注入材１２０の水セメント比と、を変えた試料を作成し、一軸圧縮強度の測定を含む試験を実施する試験工程と、試験工程の試験結果に基いて、杭孔５０を埋め戻した埋戻地盤１３０の強度特性が周辺地盤１０２の強度特性と同等になるように、注入材１２０の水セメント比と注入材１２０の注入量とを設定する注入材設定工程と、設定された水セメント比の注入材１２０を注入量になるように注入しオーガースクリュー２００で撹拌混合して孔を埋め戻す埋戻工程と、を備えている。【選択図】図１
GROUND IMPROVEMENT METHOD AFTER REMOVAL OF EXISTING PILE
To provide a ground improvement method by which strength characteristics of a backfilled ground in which a pile hole is backfilled and strength characteristics of a surrounding ground are made approximately equal to each other.SOLUTION: A ground improvement method after removal of an existing pile 10 comprises: a water content setting step of setting a water content of mud 150 stirred and mixed with an injection material 120 by an auger screw 200 by regarding that water 124 is filled into a pile hole 50 after removal; a test step of producing an adjusted test mud, a specimen with a changed mixture ratio of the injection material 120 and a water-cement ratio of the injection material 120 and performing a test including measurement of uniaxial compressive strength; an injection material setting step of setting the water-cement ratio of the injection material 120 and an injection amount of the injection material 120 based on test results in the test step so that strength characteristics of a backfilled ground 130 in which the pile hole 50 is backfilled is made approximately equal to strength characteristics of a surrounding ground 102; and a backfilling step of injecting the injection material 120 with the set water-cement ratio so as to be the injection amount and stirring and mixing by the auger screw 200 to backfill the hole.SELECTED DRAWING: Figure 1
【課題】杭孔を埋め戻した埋戻地盤の強度特性と周辺地盤の強度特性とを同等にする地盤改良方法を提供する。【解決手段】既存杭１０の撤去後の地盤改良方法は、注入材１２０とオーガースクリュー２００で撹拌混合する泥土１５０の含水比を、撤去された後の杭孔５０に水１２４が充填されたとして設定する含水比設定工程と、調整された試験用泥土と、注入材１２０との混合割合と、注入材１２０の水セメント比と、を変えた試料を作成し、一軸圧縮強度の測定を含む試験を実施する試験工程と、試験工程の試験結果に基いて、杭孔５０を埋め戻した埋戻地盤１３０の強度特性が周辺地盤１０２の強度特性と同等になるように、注入材１２０の水セメント比と注入材１２０の注入量とを設定する注入材設定工程と、設定された水セメント比の注入材１２０を注入量になるように注入しオーガースクリュー２００で撹拌混合して孔を埋め戻す埋戻工程と、を備えている。【選択図】図１
GROUND IMPROVEMENT METHOD AFTER REMOVAL OF EXISTING PILE
既存杭の撤去後の地盤改良方法
KIYOTOMO HARUKA (Autor:in) / TAYA YUJI (Autor:in) / HARADA MASAYUKI (Autor:in) / TSUCHIYA TOMIO (Autor:in) / AOKI MASAMICHI (Autor:in) / OKUMURA TAKEHIRO (Autor:in) / KONO TAKAO (Autor:in)
08.12.2022
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| Europäisches Patentamt | 2022
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| Europäisches Patentamt | 2022
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| Europäisches Patentamt | 2022