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A platform for research: civil engineering, architecture and urbanism
REINFORCING STRUCTURE OF EXISTING EARTH RETAINING WALL
PROBLEM TO BE SOLVED: To provide a reinforcing structure of an existing earth retaining wall, the structure that enables construction even if not disposing large-scale lifting equipment and is advantageous in construction period and cost, and prevents anchor steel materials from being cut even when a large earthquake force acts and facilitates restoration after the earthquake.SOLUTION: A reinforcing structure comprises ground anchors 5 and bearing pressure members 6 for inserting a surface member 2 and fixing it to a natural ground 1 with respect to an existing earth retaining wall 4 where cracks 3 occur on a surface member 2 having the back surface contacted with the natural ground 1. The reinforcing structure has longitudinal end sleepers 7 disposed to the surface member 2 at intervals, horizontal end sleepers 8 disposed perpendicularly to this and projecting heads of the ground anchors 5, washers 9 and nuts 10. The washers 9 each have a buckling transform strength by a load smaller than a tensile strength of an anchor steel material 5a, and protect an anchor body from being broken by permitting deformation such as the elongation or the bending of the steel material against destructive force mainly comprising an earthquake.
【課題】大型の揚重機器等を配置しなくとも施工可能で工期・コストも有利で大きな地震力が作用した場合にもアンカー鋼材の切断を回避して地震後の修復が容易な既設土留擁壁の補強構造を提供することを目的としている。【解決手段】背面を地山１に接する表面部材２にひび割れ３が発生した既設土留擁壁４に対し、表面部材２を挿通して地山１に固定する地中アンカー５と支圧部材６からなる補強構造は、表面部材２に間隔をあけて配設する縦端太材７とこれに直交して配設し地中アンカー５の頭部を突出する横端太材８と座金９及びナット１０を有する。座金９は、アンカー鋼材５ａの引張強度より小さな荷重で座屈変形する強度を有し、地震を主体とする破壊力に対し、鋼材の伸びや曲げ等の変形を許容することにより、アンカー本体を破壊から守る。【選択図】図１
REINFORCING STRUCTURE OF EXISTING EARTH RETAINING WALL
PROBLEM TO BE SOLVED: To provide a reinforcing structure of an existing earth retaining wall, the structure that enables construction even if not disposing large-scale lifting equipment and is advantageous in construction period and cost, and prevents anchor steel materials from being cut even when a large earthquake force acts and facilitates restoration after the earthquake.SOLUTION: A reinforcing structure comprises ground anchors 5 and bearing pressure members 6 for inserting a surface member 2 and fixing it to a natural ground 1 with respect to an existing earth retaining wall 4 where cracks 3 occur on a surface member 2 having the back surface contacted with the natural ground 1. The reinforcing structure has longitudinal end sleepers 7 disposed to the surface member 2 at intervals, horizontal end sleepers 8 disposed perpendicularly to this and projecting heads of the ground anchors 5, washers 9 and nuts 10. The washers 9 each have a buckling transform strength by a load smaller than a tensile strength of an anchor steel material 5a, and protect an anchor body from being broken by permitting deformation such as the elongation or the bending of the steel material against destructive force mainly comprising an earthquake.
【課題】大型の揚重機器等を配置しなくとも施工可能で工期・コストも有利で大きな地震力が作用した場合にもアンカー鋼材の切断を回避して地震後の修復が容易な既設土留擁壁の補強構造を提供することを目的としている。【解決手段】背面を地山１に接する表面部材２にひび割れ３が発生した既設土留擁壁４に対し、表面部材２を挿通して地山１に固定する地中アンカー５と支圧部材６からなる補強構造は、表面部材２に間隔をあけて配設する縦端太材７とこれに直交して配設し地中アンカー５の頭部を突出する横端太材８と座金９及びナット１０を有する。座金９は、アンカー鋼材５ａの引張強度より小さな荷重で座屈変形する強度を有し、地震を主体とする破壊力に対し、鋼材の伸びや曲げ等の変形を許容することにより、アンカー本体を破壊から守る。【選択図】図１
REINFORCING STRUCTURE OF EXISTING EARTH RETAINING WALL
既設土留擁壁の補強構造
KURIHARA KOJI (author)
2015-11-09
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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