A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LIQUEFACTION COUNTERMEASURE STRUCTURE FOR GROUND
PROBLEM TO BE SOLVED: To provide a liquefaction countermeasure structure for ground, which makes a cost relatively low, which facilitates construction, and which can prevent a loss of a ground function by preventing differential settlement and sand boiling during earthquakes.SOLUTION: Liquefaction countermeasure structures (20, 30 and 40) for ground (10), in which a liquefaction layer 13 exists in or near a surface layer, include at least one of a pavement layer 26 comprising a roadbed 24 and pavements (23 and 25) and a shallow layer improvement layer 21, which are formed throughout target areas (3-7), and gravel drains 22 that are arranged in a scattered manner in the target areas (3-7) and that are almost vertically formed with a predetermined depth (H1) not making a lower end reach a lower end of the liquefaction layer 13.
【課題】比較的コストが低く施工が容易であり、地震時に不同沈下および噴砂を防止することで、地盤としての機能の損失を防止できる地盤の液状化対策構造を提供する。【解決手段】表層または表層近くに液状化層１３が存在する地盤（１０）の液状化対策構造（２０、３０、４０）において、対象領域（３〜７）の全域にわたって形成される、路盤２４および舗装（２３、２５）からなる舗装層２６と浅層改良層２１との少なくとも一方と、対象領域（３〜７）に分散配置され、下端が液状化層１３の下端に至らない所定の深さ（Ｈ１）をもって略鉛直に形成されるグラベルドレーン２２とを有する構成とする。【選択図】図２
LIQUEFACTION COUNTERMEASURE STRUCTURE FOR GROUND
PROBLEM TO BE SOLVED: To provide a liquefaction countermeasure structure for ground, which makes a cost relatively low, which facilitates construction, and which can prevent a loss of a ground function by preventing differential settlement and sand boiling during earthquakes.SOLUTION: Liquefaction countermeasure structures (20, 30 and 40) for ground (10), in which a liquefaction layer 13 exists in or near a surface layer, include at least one of a pavement layer 26 comprising a roadbed 24 and pavements (23 and 25) and a shallow layer improvement layer 21, which are formed throughout target areas (3-7), and gravel drains 22 that are arranged in a scattered manner in the target areas (3-7) and that are almost vertically formed with a predetermined depth (H1) not making a lower end reach a lower end of the liquefaction layer 13.
【課題】比較的コストが低く施工が容易であり、地震時に不同沈下および噴砂を防止することで、地盤としての機能の損失を防止できる地盤の液状化対策構造を提供する。【解決手段】表層または表層近くに液状化層１３が存在する地盤（１０）の液状化対策構造（２０、３０、４０）において、対象領域（３〜７）の全域にわたって形成される、路盤２４および舗装（２３、２５）からなる舗装層２６と浅層改良層２１との少なくとも一方と、対象領域（３〜７）に分散配置され、下端が液状化層１３の下端に至らない所定の深さ（Ｈ１）をもって略鉛直に形成されるグラベルドレーン２２とを有する構成とする。【選択図】図２
LIQUEFACTION COUNTERMEASURE STRUCTURE FOR GROUND
地盤の液状化対策構造
HIRATA YUICHI (author) / MIYATA KATSUTOSHI (author) / HARADA KENJI (author) / YOSHITOMI HIROKI (author) / AKIMA TAKESHI (author)
2015-06-04
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2020
LIQUEFACTION COUNTERMEASURE STRUCTURE AND LIQUEFACTION COUNTERMEASURE METHOD
| European Patent Office | 2022
LIQUEFACTION COUNTERMEASURE CONSTRUCTION METHOD AND LIQUEFACTION COUNTERMEASURE STRUCTURE
| European Patent Office | 2021