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SLAB REPLACING METHOD FOR COMPOSITE GIRDER
PROBLEM TO BE SOLVED: To provide a slab replacement method for a composite girder capable of closing a clearance between an existing slab and a new slab without generating any steps on a road surface.SOLUTION: A top surface of a plate-like member 50 closing clearance between an existing slab 20 and a new slab 30 becomes flush with top surfaces of pavements 22, 23, so as to form that a road surface which does not have any step between slabs 20, 30 by the plate-like member 50, so that traveling vehicles passing on the plate-like member 50 are not subject to impact. In this case, since pre-stressed concrete made of ultrahigh strength fiber reinforced concrete is used for the plate-like member 50, prestress is applied to the plate-like member 50 to suppress tensile stress at the time of loading, and also the ultrahigh strength fiber reinforced concrete enhances tensile strength and toughness of concrete itself.SELECTED DRAWING: Figure 22
【課題】路面に段差を生ずることなく既設床版と新設床版との間の隙間を閉鎖することのできる合成桁の床版取替工法を提供する。【解決手段】既設床版20と新設床版30との間の隙間を閉鎖する板状部材50の上面が舗装22,23の上面と同等の高さになることから、板状部材50によって各床版間20,30に段差のない路面が形成され、板状部材50を通過する走行車両に段差による衝撃を与えることがない。この場合、板状部材50には超高強度繊維補強コンクリートからなるプレストレストコンクリートが用いられることから、板状部材50にプレストレスが付与されことにより荷重載荷時の引張応力が抑制されるとともに、超高強度繊維補強コンクリートによってコンクリート自体の引張強度と靭性が高められる。【選択図】図22
SLAB REPLACING METHOD FOR COMPOSITE GIRDER
PROBLEM TO BE SOLVED: To provide a slab replacement method for a composite girder capable of closing a clearance between an existing slab and a new slab without generating any steps on a road surface.SOLUTION: A top surface of a plate-like member 50 closing clearance between an existing slab 20 and a new slab 30 becomes flush with top surfaces of pavements 22, 23, so as to form that a road surface which does not have any step between slabs 20, 30 by the plate-like member 50, so that traveling vehicles passing on the plate-like member 50 are not subject to impact. In this case, since pre-stressed concrete made of ultrahigh strength fiber reinforced concrete is used for the plate-like member 50, prestress is applied to the plate-like member 50 to suppress tensile stress at the time of loading, and also the ultrahigh strength fiber reinforced concrete enhances tensile strength and toughness of concrete itself.SELECTED DRAWING: Figure 22
【課題】路面に段差を生ずることなく既設床版と新設床版との間の隙間を閉鎖することのできる合成桁の床版取替工法を提供する。【解決手段】既設床版20と新設床版30との間の隙間を閉鎖する板状部材50の上面が舗装22,23の上面と同等の高さになることから、板状部材50によって各床版間20,30に段差のない路面が形成され、板状部材50を通過する走行車両に段差による衝撃を与えることがない。この場合、板状部材50には超高強度繊維補強コンクリートからなるプレストレストコンクリートが用いられることから、板状部材50にプレストレスが付与されことにより荷重載荷時の引張応力が抑制されるとともに、超高強度繊維補強コンクリートによってコンクリート自体の引張強度と靭性が高められる。【選択図】図22
SLAB REPLACING METHOD FOR COMPOSITE GIRDER
合成桁の床版取替工法
KISHIDA MASAHIKO (Autor:in) / MINEMURA TOMOYA (Autor:in) / ISHIHARA YOSUKE (Autor:in) / SATO KIMINORI (Autor:in) / KURATA YUKIHIRO (Autor:in) / UEDA KAZUYA (Autor:in) / TODA KATSUYA (Autor:in) / SAITO SHIRO (Autor:in) / TACHIBANA HAJIME (Autor:in) / TAKAO TOMOYUKI (Autor:in)
09.08.2018
Patent
Elektronische Ressource
Japanisch
IPC:
E01D
BRIDGES
,
Brücken
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