A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
REINFORCEMENT STRUCTURE OF MANHOLE
To provide the reinforcement structure of a manhole capable of safely bearing the load of passing vehicles by reforming the inclined wall of a manhole upper part, and dispensing with excavation of surroundings in working time.SOLUTION: The reinforcement structure of a manhole uses a renewal inclined wall 21 and a renewal vertical wall 41. On an inner peripheral side of an existing vertical wall 71, the renewal vertical wall 41 is constructed of repair segments 42, and a diameter-expanded portion 65 is formed on an existing inclined wall 61. The renewal inclined wall 21 formed of multiple inclined wall segments 22, 23 is placed on the renewal vertical wall 41, an upper part thereof is inserted into the diameter-expanded portion 65, to thereby support a receiving frame 53 and a lid 51 by the renewal inclined wall 21. Therefore, a load applied to the lid 51 is transmitted to the ground G through the renewal inclined wall 21 and the renewal vertical wall 41, and loads of vehicles can be safely borne. Furthermore, a series of work such as formation of the diameter-expanded portion 65 can be performed inside the manhole, suppressing interfering with traffic to the minimum.SELECTED DRAWING: Figure 1
【課題】マンホール上部の斜壁を改修し、通行する自動車などの荷重を安全に受け止め可能で、また作業時に周辺を掘削する必要のないマンホールの補強構造を提供する。【解決手段】マンホールの補強構造として更新斜壁２１と更新直壁４１を用いており、既設直壁７１の内周側には、補修セグメント４２などで更新直壁４１を構築するほか、既設斜壁６１の上部に拡径部６５を形成する。そして更新直壁４１の上部には、複数の斜壁セグメント２２、２３からなる更新斜壁２１を載せ、その上部を拡径部６５の中に入り込ませることで、受枠５３と蓋５１は更新斜壁２１で支持されるようになる。そのため蓋５１に作用した荷重は、更新斜壁２１と更新直壁４１を経て地盤Ｇに伝達され、自動車などの荷重を安全に受け止め可能である。しかも拡径部６５の形成など、一連の作業は、マンホールの内部で実施可能で、交通の妨げも最小限に抑制できる。【選択図】図１
REINFORCEMENT STRUCTURE OF MANHOLE
To provide the reinforcement structure of a manhole capable of safely bearing the load of passing vehicles by reforming the inclined wall of a manhole upper part, and dispensing with excavation of surroundings in working time.SOLUTION: The reinforcement structure of a manhole uses a renewal inclined wall 21 and a renewal vertical wall 41. On an inner peripheral side of an existing vertical wall 71, the renewal vertical wall 41 is constructed of repair segments 42, and a diameter-expanded portion 65 is formed on an existing inclined wall 61. The renewal inclined wall 21 formed of multiple inclined wall segments 22, 23 is placed on the renewal vertical wall 41, an upper part thereof is inserted into the diameter-expanded portion 65, to thereby support a receiving frame 53 and a lid 51 by the renewal inclined wall 21. Therefore, a load applied to the lid 51 is transmitted to the ground G through the renewal inclined wall 21 and the renewal vertical wall 41, and loads of vehicles can be safely borne. Furthermore, a series of work such as formation of the diameter-expanded portion 65 can be performed inside the manhole, suppressing interfering with traffic to the minimum.SELECTED DRAWING: Figure 1
【課題】マンホール上部の斜壁を改修し、通行する自動車などの荷重を安全に受け止め可能で、また作業時に周辺を掘削する必要のないマンホールの補強構造を提供する。【解決手段】マンホールの補強構造として更新斜壁２１と更新直壁４１を用いており、既設直壁７１の内周側には、補修セグメント４２などで更新直壁４１を構築するほか、既設斜壁６１の上部に拡径部６５を形成する。そして更新直壁４１の上部には、複数の斜壁セグメント２２、２３からなる更新斜壁２１を載せ、その上部を拡径部６５の中に入り込ませることで、受枠５３と蓋５１は更新斜壁２１で支持されるようになる。そのため蓋５１に作用した荷重は、更新斜壁２１と更新直壁４１を経て地盤Ｇに伝達され、自動車などの荷重を安全に受け止め可能である。しかも拡径部６５の形成など、一連の作業は、マンホールの内部で実施可能で、交通の妨げも最小限に抑制できる。【選択図】図１
REINFORCEMENT STRUCTURE OF MANHOLE
マンホールの補強構造
FUKUNAGA KAZUKI (author) / ITAMI KAZUYA (author) / OTSUGA NORIO (author)
2020-10-22
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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