A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LIQUEFACTION COUNTERMEASURE CONSTRUCTION METHOD FOR EXISTING UNDERGROUND PIPE
PROBLEM TO BE SOLVED: To provide a liquefaction countermeasure construction method for an existing underground pipe which can simply and at a low cost suppress the uplift and others due to liquefaction of an existing underground pipe such as a gas pipe laid in a foundation having a non-liquefaction layer such as a gravel layer in a surface layer part or a foundation having the surface layer part coated with asphalt pavement.SOLUTION: In a foundation having risk of liquefaction which has an asphalt pavement 11 in a surface layer part, in the upper part of the foundation where an underground pipe 1 is laid, a plurality of consolidated bodies 12 are integrally formed with the underground pipe 1 and at a spacing in the tube axis direction of the underground pipe 1 so as to apply a weight to the underground pipe 1. A support body 13 is formed so as to support the underground pipe 1 downward from the top between the consolidated body 12 and the asphalt pavement 11. The weight and interval of each consolidated body 12 and the number and interval of the support body 13 are set so as to suppress the rotation of the consolidated body and the uplift and rotation of the underground pipe 1 due to liquefaction.SELECTED DRAWING: Figure 1
【課題】表層部に砂礫層などの非液状化層を有する地盤、あるいは表層部がアスファルト舗装などによって覆工された地盤内に敷設されたガス管などの既設埋設管の液状化に伴う浮上り等を簡便かつ経済的に抑制可能な既設埋設管の液状化対策工法を提供する。【解決手段】液状化のおそれのある地盤であって、表層部にアスファルト舗装11を有する地盤内に敷設された埋設管１の上部地盤中に、固結体12を埋設管1と一体にかつ埋設管１の管軸方向に間隔を開けて複数形成することにより埋設管１に重量を付与する。固結体12とアスファルト舗装11との間に埋設管１を上から下方に向かって支持するように支持体13を形成する。各固結体12の重量と間隔、および支持体13の数量と間隔を液状化に伴う固結体の回転を抑制し埋設管１の浮上りと回転を抑制するように設定する。【選択図】図１
LIQUEFACTION COUNTERMEASURE CONSTRUCTION METHOD FOR EXISTING UNDERGROUND PIPE
PROBLEM TO BE SOLVED: To provide a liquefaction countermeasure construction method for an existing underground pipe which can simply and at a low cost suppress the uplift and others due to liquefaction of an existing underground pipe such as a gas pipe laid in a foundation having a non-liquefaction layer such as a gravel layer in a surface layer part or a foundation having the surface layer part coated with asphalt pavement.SOLUTION: In a foundation having risk of liquefaction which has an asphalt pavement 11 in a surface layer part, in the upper part of the foundation where an underground pipe 1 is laid, a plurality of consolidated bodies 12 are integrally formed with the underground pipe 1 and at a spacing in the tube axis direction of the underground pipe 1 so as to apply a weight to the underground pipe 1. A support body 13 is formed so as to support the underground pipe 1 downward from the top between the consolidated body 12 and the asphalt pavement 11. The weight and interval of each consolidated body 12 and the number and interval of the support body 13 are set so as to suppress the rotation of the consolidated body and the uplift and rotation of the underground pipe 1 due to liquefaction.SELECTED DRAWING: Figure 1
【課題】表層部に砂礫層などの非液状化層を有する地盤、あるいは表層部がアスファルト舗装などによって覆工された地盤内に敷設されたガス管などの既設埋設管の液状化に伴う浮上り等を簡便かつ経済的に抑制可能な既設埋設管の液状化対策工法を提供する。【解決手段】液状化のおそれのある地盤であって、表層部にアスファルト舗装11を有する地盤内に敷設された埋設管１の上部地盤中に、固結体12を埋設管1と一体にかつ埋設管１の管軸方向に間隔を開けて複数形成することにより埋設管１に重量を付与する。固結体12とアスファルト舗装11との間に埋設管１を上から下方に向かって支持するように支持体13を形成する。各固結体12の重量と間隔、および支持体13の数量と間隔を液状化に伴う固結体の回転を抑制し埋設管１の浮上りと回転を抑制するように設定する。【選択図】図１
LIQUEFACTION COUNTERMEASURE CONSTRUCTION METHOD FOR EXISTING UNDERGROUND PIPE
既設埋設管の液状化対策工法
UCHIMURA TARO (author) / TOHATA IKUO (author) / SHIMADA SHUNSUKE (author) / KOYAMA TADAO (author) / SASAKI TAKAMITSU (author)
2016-02-01
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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