A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SOIL LIQUEFACTION PREVENTION STRUCTURE
PROBLEM TO BE SOLVED: To provide a soil liquefaction prevention structure capable of appropriately applying liquefaction countermeasures to soil under an existing structure such as a building or a house and also facilitating management of constituent facilities.SOLUTION: The soil liquefaction prevention structure includes: a water cutoff wall 13 surrounding a liquefaction layer 11 under an existing structure 10; catchment pipes 14 and 14 buried in an upper layer part 11a of the liquefaction layer within the water cutoff wall 13; a pump 15 installed on the ground for pumping up ground water in the upper layer part 11a of the liquefaction layer through the catchment pipes 14; and a plurality of drain materials 16, 16, ... which are buried from a surface of the ground around the existing structure towards a bottom of the liquefaction layer under the existing structure. A ground water level 17 is reduced lower than the upper layer part 11a of the liquefaction layer by pumping up the ground water, excessive clearance water in a lower layer part 11b of the liquefaction layer flows into the drain materials 16, 16, ... and clearance water pressure in the lower layer part 11b of the liquefaction layer is prevented from increasing.
【課題】ビルや家屋等の既設構造物下の地盤に好適に液状化対策を施すことができ、且つ、構成設備の管理も容易な地盤の液状化防止構造の提供。【解決手段】既設構造物１０下の液状化層１１を囲む遮水壁１３と、遮水壁１３内の液状化層上層部１１ａに埋め込まれた集水管１４，１４と、地上に設置され、集水管１４を通して液状化層上層部１１ａの地下水を汲み上げるポンプ１５と、既設構造物周囲の地表から既設構造物下の液状化層底部に向けて埋め込まれた複数のドレーン材１６，１６...とを備え、地下水の汲み上げによって地下水位１７を液状化層上層部１１ａ下まで下げるとともに、液状化層下層部１１ｂの過剰間隙水がドレーン材１６，１６...に流入し、液状化層下層部１１ｂの間隙水圧の上昇が抑制されるようにした地盤の液状化防止構造。【選択図】図１
SOIL LIQUEFACTION PREVENTION STRUCTURE
PROBLEM TO BE SOLVED: To provide a soil liquefaction prevention structure capable of appropriately applying liquefaction countermeasures to soil under an existing structure such as a building or a house and also facilitating management of constituent facilities.SOLUTION: The soil liquefaction prevention structure includes: a water cutoff wall 13 surrounding a liquefaction layer 11 under an existing structure 10; catchment pipes 14 and 14 buried in an upper layer part 11a of the liquefaction layer within the water cutoff wall 13; a pump 15 installed on the ground for pumping up ground water in the upper layer part 11a of the liquefaction layer through the catchment pipes 14; and a plurality of drain materials 16, 16, ... which are buried from a surface of the ground around the existing structure towards a bottom of the liquefaction layer under the existing structure. A ground water level 17 is reduced lower than the upper layer part 11a of the liquefaction layer by pumping up the ground water, excessive clearance water in a lower layer part 11b of the liquefaction layer flows into the drain materials 16, 16, ... and clearance water pressure in the lower layer part 11b of the liquefaction layer is prevented from increasing.
【課題】ビルや家屋等の既設構造物下の地盤に好適に液状化対策を施すことができ、且つ、構成設備の管理も容易な地盤の液状化防止構造の提供。【解決手段】既設構造物１０下の液状化層１１を囲む遮水壁１３と、遮水壁１３内の液状化層上層部１１ａに埋め込まれた集水管１４，１４と、地上に設置され、集水管１４を通して液状化層上層部１１ａの地下水を汲み上げるポンプ１５と、既設構造物周囲の地表から既設構造物下の液状化層底部に向けて埋め込まれた複数のドレーン材１６，１６...とを備え、地下水の汲み上げによって地下水位１７を液状化層上層部１１ａ下まで下げるとともに、液状化層下層部１１ｂの過剰間隙水がドレーン材１６，１６...に流入し、液状化層下層部１１ｂの間隙水圧の上昇が抑制されるようにした地盤の液状化防止構造。【選択図】図１
SOIL LIQUEFACTION PREVENTION STRUCTURE
地盤の液状化防止構造
HAYASHI KENTARO (author) / AKIMOTO TEPPEI (author)
2015-08-13
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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