A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SLOPE STABILIZATION METHOD, SLOPE STABILIZATION STRUCTURE, SOIL STRUCTURE MANAGEMENT METHOD, AND SOIL STRUCTURE MANAGEMENT SYSTEM
PROBLEM TO BE SOLVED: To deter a slope collapse beforehand, even if unexpectedly concentrated torrential rain occurs.SOLUTION: An excess pore water pressure ratio α that defines an excess pore water pressure P2 generated in a soil pipe is calculated based on a measured soil parameter and a safety factor Fs of a slope. A limit excess pore water pressure Pat which slope collapse can occur is predicted from the excess pore pressure ratio α and a drain pipe 3 is disposed on the slope so as not to exceed the limit excess pore water pressure P, and the excess pore water pressure P2 is dissipated by the drain pipe 3. The drain pipe 3 has a large number of holes in a longitudinal direction and one end is an open end, and the open end is exposed from the slope. The excess pore water pressure ratio α is expressed as (u-Δu)/u, where u is an excess pore water pressure when the soil pipe is completely saturated with groundwater and Δu is a water pressure loss when the groundwater infiltrates into the ground from the soil pipe.SELECTED DRAWING: Figure 1
【課題】想定外の記録的な集中豪雨が生じても、斜面崩壊を未然に抑止することができるようにする。【解決手段】ソイルパイプに発生する過剰間隙水圧Ｐ２を規定する過剰間隙水圧比αを、実測された土質パラメータと斜面の安全率Ｆｓとに基づいて算出し、過剰間隙水圧比αから斜面崩壊が生じ得る限界過剰間隙水圧ＰＬを予測し、該限界過剰間隙水圧ＰＬを超えないように斜面上に排水パイプ３を配し、該排水パイプ３により過剰間隙水圧Ｐ２を消散させる。排水パイプ３は、長手方向に多数の孔が設けられると共に、一端は開放端とされ、該開放端が斜面から露出している。過剰間隙水圧比αは、ソイルパイプが地下水で完全飽和状態のときの過剰間隙水圧をｕ、地下水が前記ソイルパイプから地中に浸透したときの水圧損失をΔｕとしたときに、（ｕ−Δｕ）／ｕで表される。【選択図】図１
SLOPE STABILIZATION METHOD, SLOPE STABILIZATION STRUCTURE, SOIL STRUCTURE MANAGEMENT METHOD, AND SOIL STRUCTURE MANAGEMENT SYSTEM
PROBLEM TO BE SOLVED: To deter a slope collapse beforehand, even if unexpectedly concentrated torrential rain occurs.SOLUTION: An excess pore water pressure ratio α that defines an excess pore water pressure P2 generated in a soil pipe is calculated based on a measured soil parameter and a safety factor Fs of a slope. A limit excess pore water pressure Pat which slope collapse can occur is predicted from the excess pore pressure ratio α and a drain pipe 3 is disposed on the slope so as not to exceed the limit excess pore water pressure P, and the excess pore water pressure P2 is dissipated by the drain pipe 3. The drain pipe 3 has a large number of holes in a longitudinal direction and one end is an open end, and the open end is exposed from the slope. The excess pore water pressure ratio α is expressed as (u-Δu)/u, where u is an excess pore water pressure when the soil pipe is completely saturated with groundwater and Δu is a water pressure loss when the groundwater infiltrates into the ground from the soil pipe.SELECTED DRAWING: Figure 1
【課題】想定外の記録的な集中豪雨が生じても、斜面崩壊を未然に抑止することができるようにする。【解決手段】ソイルパイプに発生する過剰間隙水圧Ｐ２を規定する過剰間隙水圧比αを、実測された土質パラメータと斜面の安全率Ｆｓとに基づいて算出し、過剰間隙水圧比αから斜面崩壊が生じ得る限界過剰間隙水圧ＰＬを予測し、該限界過剰間隙水圧ＰＬを超えないように斜面上に排水パイプ３を配し、該排水パイプ３により過剰間隙水圧Ｐ２を消散させる。排水パイプ３は、長手方向に多数の孔が設けられると共に、一端は開放端とされ、該開放端が斜面から露出している。過剰間隙水圧比αは、ソイルパイプが地下水で完全飽和状態のときの過剰間隙水圧をｕ、地下水が前記ソイルパイプから地中に浸透したときの水圧損失をΔｕとしたときに、（ｕ−Δｕ）／ｕで表される。【選択図】図１
SLOPE STABILIZATION METHOD, SLOPE STABILIZATION STRUCTURE, SOIL STRUCTURE MANAGEMENT METHOD, AND SOIL STRUCTURE MANAGEMENT SYSTEM
斜面安定化工法、斜面安定化構造、土構造物の管理方法、及び土構造物の管理システム
OTA HIDEMASA (author)
2018-04-26
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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