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A platform for research: civil engineering, architecture and urbanism
CONSTRUCTION METHOD TO SUPPRESS SUBSIDENCE OF BACK FILL ON ABUTMENT
PROBLEM TO BE SOLVED: To suppress subsidence of back fill on an abutment surely and easily, with little constraints on construction conditions, causing little displacement of ground during construction and after construction.SOLUTION: A construction method to suppress subsidence of back fill on an abutment comprises: repeating a step of forming a preceding soil improvement body 10 at a predetermined interval in a substantially horizontal direction; step of forming a subsequent soil improvement body 20 at a position different from the preceding soil improvement body 10 by shifting an insertion position and an insertion depth of a chemical injection rod 60 at a same height, so as to form a series of soil improvement body groups 30 in a substantially horizontal direction; and repeating a step of shifting an insertion height of the chemical injection rod 60 to form a series of soil improvement body groups 30 in the substantially horizontal direction, so as to form the soil improvement body groups 30 for the whole of back fill 80 on abutment to be improved.SELECTED DRAWING: Figure 1
【課題】 施工条件の制約が少なく、施工時及び施工後において地盤の変位を殆ど生じさせることなく、橋台背面盛土の沈下を確実かつ容易に抑制する。【解決手段】 略水平方向に一定間隔を隔てて先行地盤改良体１０を形成する工程と、同一高さで薬液注入ロッド６０の挿入位置及び挿入深さをずらして、先行地盤改良体１０とは異なる位置に後行地盤改良体２０を形成する工程とを繰り返して実施することにより、略水平方向に一連となる地盤改良体群３０を形成する。薬液注入ロッド６０の挿入高さをずらして、略水平方向に一連となる地盤改良体群３０を形成する工程を繰り返すことにより、改良対象となる橋台背面盛土８０の全体に対して地盤改良体群３０を形成する。【選択図】図１
CONSTRUCTION METHOD TO SUPPRESS SUBSIDENCE OF BACK FILL ON ABUTMENT
PROBLEM TO BE SOLVED: To suppress subsidence of back fill on an abutment surely and easily, with little constraints on construction conditions, causing little displacement of ground during construction and after construction.SOLUTION: A construction method to suppress subsidence of back fill on an abutment comprises: repeating a step of forming a preceding soil improvement body 10 at a predetermined interval in a substantially horizontal direction; step of forming a subsequent soil improvement body 20 at a position different from the preceding soil improvement body 10 by shifting an insertion position and an insertion depth of a chemical injection rod 60 at a same height, so as to form a series of soil improvement body groups 30 in a substantially horizontal direction; and repeating a step of shifting an insertion height of the chemical injection rod 60 to form a series of soil improvement body groups 30 in the substantially horizontal direction, so as to form the soil improvement body groups 30 for the whole of back fill 80 on abutment to be improved.SELECTED DRAWING: Figure 1
【課題】 施工条件の制約が少なく、施工時及び施工後において地盤の変位を殆ど生じさせることなく、橋台背面盛土の沈下を確実かつ容易に抑制する。【解決手段】 略水平方向に一定間隔を隔てて先行地盤改良体１０を形成する工程と、同一高さで薬液注入ロッド６０の挿入位置及び挿入深さをずらして、先行地盤改良体１０とは異なる位置に後行地盤改良体２０を形成する工程とを繰り返して実施することにより、略水平方向に一連となる地盤改良体群３０を形成する。薬液注入ロッド６０の挿入高さをずらして、略水平方向に一連となる地盤改良体群３０を形成する工程を繰り返すことにより、改良対象となる橋台背面盛土８０の全体に対して地盤改良体群３０を形成する。【選択図】図１
CONSTRUCTION METHOD TO SUPPRESS SUBSIDENCE OF BACK FILL ON ABUTMENT
橋台背面盛土の沈下抑制工法
MATSUDA YOSHIFUMI (author) / KONDO MASAHIRO (author) / YAMADA TAKAHIRO (author) / FUJIWARA MASAHITO (author) / TEZUKA HIROAKI (author) / YAMAUCHI TAKAHIRO (author) / KAWANISHI ATSUSHI (author) / OTA MITSUTAKA (author) / MIURA KATSUYOSHI (author) / DOI YASUHIKO (author)
2018-05-10
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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