A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EMBANKMENT STABILIZATION METHOD
PROBLEM TO BE SOLVED: To provide an embankment stabilization method in which a drain pipe is installed for lowering the water level inside the embankment and reinforcing the soil, thereby dealing with vertical loads and vibrations caused by traffic loads and helping to improve the durability of the embankment to withstand rainfall and earthquake, and furthermore enabling prevention of filling of soil particles, or clogging, of pipe slits when the drain pipe is installed directly in the embankment, thereby preventing outflow of soil particles into the pipe and eliminating phenomena such as decline in drain performance due to accumulation of fine particles around the slit, which is caused by repeated saturation and unsaturation of embankment ground as a result of fluctuations in the groundwater level over a long period.SOLUTION: A catchment part is formed by covering an outer periphery of a slit formation part with an unwoven cloth for preventing clogging, at an end of a small-diameter thin-wall steel pipe. An excavation head is installed at a tip of the catchment part, and the small-diameter thin-wall steel pipe is rotated and pressed into an embankment with a thruster horizontally or at an inclination up to 5°, and left in the soil as a darin pipe.
【課題】排水パイプを設置することで、盛土内の水位を低下させる機能とともに、補強土機能を発揮することで、上載荷重や交通荷重による振動、降雨や地震に対する盛土の耐力の向上にも寄与でき、しかも、排水パイプを盛土へ直接打設する際、パイプのスリットへの土粒子の充填、いわゆる目詰まりや、パイプ内への土粒子の流出現象が生じることを防止でき、長期間に亘る地下水位の変動に伴う盛土地盤の飽和・不飽和の繰り返しにより、スリット周辺への細粒分の蓄積が進行し、排水性能が低下する等の現象を無くすことができる。【解決手段】スリット形成部の外周を目詰まり防止用の不織布で被覆して構成した集水部を小径薄肉鋼管の端部に形成し、該集水部の先に掘削ヘッドを設けて、小径薄肉鋼管を推進機で水平もしくは〜５?の傾斜で盛土に回転圧入して排水パイプとして地中に残置する。【選択図】 図１
EMBANKMENT STABILIZATION METHOD
PROBLEM TO BE SOLVED: To provide an embankment stabilization method in which a drain pipe is installed for lowering the water level inside the embankment and reinforcing the soil, thereby dealing with vertical loads and vibrations caused by traffic loads and helping to improve the durability of the embankment to withstand rainfall and earthquake, and furthermore enabling prevention of filling of soil particles, or clogging, of pipe slits when the drain pipe is installed directly in the embankment, thereby preventing outflow of soil particles into the pipe and eliminating phenomena such as decline in drain performance due to accumulation of fine particles around the slit, which is caused by repeated saturation and unsaturation of embankment ground as a result of fluctuations in the groundwater level over a long period.SOLUTION: A catchment part is formed by covering an outer periphery of a slit formation part with an unwoven cloth for preventing clogging, at an end of a small-diameter thin-wall steel pipe. An excavation head is installed at a tip of the catchment part, and the small-diameter thin-wall steel pipe is rotated and pressed into an embankment with a thruster horizontally or at an inclination up to 5°, and left in the soil as a darin pipe.
【課題】排水パイプを設置することで、盛土内の水位を低下させる機能とともに、補強土機能を発揮することで、上載荷重や交通荷重による振動、降雨や地震に対する盛土の耐力の向上にも寄与でき、しかも、排水パイプを盛土へ直接打設する際、パイプのスリットへの土粒子の充填、いわゆる目詰まりや、パイプ内への土粒子の流出現象が生じることを防止でき、長期間に亘る地下水位の変動に伴う盛土地盤の飽和・不飽和の繰り返しにより、スリット周辺への細粒分の蓄積が進行し、排水性能が低下する等の現象を無くすことができる。【解決手段】スリット形成部の外周を目詰まり防止用の不織布で被覆して構成した集水部を小径薄肉鋼管の端部に形成し、該集水部の先に掘削ヘッドを設けて、小径薄肉鋼管を推進機で水平もしくは〜５?の傾斜で盛土に回転圧入して排水パイプとして地中に残置する。【選択図】 図１
EMBANKMENT STABILIZATION METHOD
盛土の安定化工法
KAMIMURA MAKOTO (author) / MAE TOSHIMORI (author) / NISHIMURA AKIHIKO (author)
2015-12-14
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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