Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
EARTHQUAKE-RESISTANT MANHOLE JOINT
PROBLEM TO BE SOLVED: To provide an earthquake-resistant manhole joint that mitigates a burden of fitting work while effectively realizing both earthquake resistance and water cutoff.SOLUTION: An earthquake-resistant manhole joint comprises: a steel cylinder 1 having a tip part 3a pressed into a drilled hole Ma formed on a peripheral wall of a manhole M, with a rubber ring 2 interposed in between, at the same time having a connection pipe P loosely inserted; and a rubber cylinder 3 fitted on an outer peripheral surface of a base edge part of the steel cylinder 1 and fitted on an outer peripheral surface of the connection pipe P loosely inserted into the steel cylinder 1. The steel cylinder 1 is of a cylindrical form with a same diameter from the tip to the base edge, and has the rubber ring 2 fixed on the outer peripheral surface of the tip part through an annular groove 4. The rubber cylinder 3 is of a cylindrical form that tapers from a tip toward a base edge. The rubber cylinder cuts off water at a portion between the outer peripheral surface of the tip part of the steel cylinder 1 and an inner peripheral surface of the drilled hole Ma by adhering on the inner peripheral surface of the drilled hole Ma while backing up the rubber ring 2 from inside on the outer peripheral surface at the tip part of the steel cylinder 1, at the same time absorbing relative displacement between the manhole M and the connection pipe P through deformation of the rubber cylinder 3.SELECTED DRAWING: Figure 1
【課題】有効に耐震及び止水の両立を図りながらも取付作業の負担を軽減した耐震性マンホール継手の提供。【解決手段】マンホールＭの周壁に形成された削孔Ｍａにゴム製リング２を介して先端部３ａを圧入すると共に接続管Ｐを緩挿させる鋼製筒１と、鋼製筒１の基端部外周面に嵌合すると共に同鋼製筒１内に緩挿した接続管Ｐの外周面と嵌合するゴム製筒３とから成り、鋼製筒１は先端から基端に向かって等径の筒状を呈すると共に先端部外周面に環状溝４を介してゴム製リング２を固定する構成を備え、ゴム製筒３は先端から基端に向かって漸次縮径する筒状を呈する構成を備え、鋼製筒１の先端部外周面でゴム製リング２を内側からバックアップしつつ削孔Ｍａの内周面に圧着することにより鋼製筒１の先端部外周面と削孔Ｍａの内周面間における止水を図る一方、ゴム製筒３の変形によりマンホールＭと接続管Ｐとの相対変動を吸収する。【選択図】図１
EARTHQUAKE-RESISTANT MANHOLE JOINT
PROBLEM TO BE SOLVED: To provide an earthquake-resistant manhole joint that mitigates a burden of fitting work while effectively realizing both earthquake resistance and water cutoff.SOLUTION: An earthquake-resistant manhole joint comprises: a steel cylinder 1 having a tip part 3a pressed into a drilled hole Ma formed on a peripheral wall of a manhole M, with a rubber ring 2 interposed in between, at the same time having a connection pipe P loosely inserted; and a rubber cylinder 3 fitted on an outer peripheral surface of a base edge part of the steel cylinder 1 and fitted on an outer peripheral surface of the connection pipe P loosely inserted into the steel cylinder 1. The steel cylinder 1 is of a cylindrical form with a same diameter from the tip to the base edge, and has the rubber ring 2 fixed on the outer peripheral surface of the tip part through an annular groove 4. The rubber cylinder 3 is of a cylindrical form that tapers from a tip toward a base edge. The rubber cylinder cuts off water at a portion between the outer peripheral surface of the tip part of the steel cylinder 1 and an inner peripheral surface of the drilled hole Ma by adhering on the inner peripheral surface of the drilled hole Ma while backing up the rubber ring 2 from inside on the outer peripheral surface at the tip part of the steel cylinder 1, at the same time absorbing relative displacement between the manhole M and the connection pipe P through deformation of the rubber cylinder 3.SELECTED DRAWING: Figure 1
【課題】有効に耐震及び止水の両立を図りながらも取付作業の負担を軽減した耐震性マンホール継手の提供。【解決手段】マンホールＭの周壁に形成された削孔Ｍａにゴム製リング２を介して先端部３ａを圧入すると共に接続管Ｐを緩挿させる鋼製筒１と、鋼製筒１の基端部外周面に嵌合すると共に同鋼製筒１内に緩挿した接続管Ｐの外周面と嵌合するゴム製筒３とから成り、鋼製筒１は先端から基端に向かって等径の筒状を呈すると共に先端部外周面に環状溝４を介してゴム製リング２を固定する構成を備え、ゴム製筒３は先端から基端に向かって漸次縮径する筒状を呈する構成を備え、鋼製筒１の先端部外周面でゴム製リング２を内側からバックアップしつつ削孔Ｍａの内周面に圧着することにより鋼製筒１の先端部外周面と削孔Ｍａの内周面間における止水を図る一方、ゴム製筒３の変形によりマンホールＭと接続管Ｐとの相対変動を吸収する。【選択図】図１
EARTHQUAKE-RESISTANT MANHOLE JOINT
耐震性マンホール継手
OKAYAMA NOBUYUKI (Autor:in) / ENAMI HIROSHI (Autor:in) / MATSUO NOBUHIKO (Autor:in) / KOIZUMI ATSUSHI (Autor:in)
07.12.2017
Patent
Elektronische Ressource
Japanisch