Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Structure and method for repairing corroded bridge girder end plate through UHPC
The invention relates to a structure and method for repairing a corroded bridge girder end plate through UHPC, the lower end of the girder end plate abuts against a bridge support, the girder end plate comprises the girder end plate and the UHPC, the girder end plate comprises a corroded web and a non-corroded web, and a plurality of shear bolts are welded to the non-corroded web at intervals; the UHPC is poured on the main beam end plate, covers the corroded web and the non-corroded web and wraps the multiple shear bolts, and the lower end of the UHPC abuts against the bridge support. By utilizing the composite action of the UHPC and the shear bolt, the load on the beam end plate is firstly transmitted to the shear bolt from the uncorroded web, then is transmitted to the UHPC through the shear bolt, and then is transmitted to the bridge support through the UHPC, so that the conduction of the load bypasses the corroded beam end plate, the stress level of the corroded part is effectively reduced, the load is jointly borne by the steel beam web and the UHPC, and the corrosion resistance of the bridge support is improved. The bearing capacity of the beam end plate is improved. UHPC dense filling is low in permeability, water is prevented from reaching existing corrosion steel, future corrosion is reduced as much as possible, and the service life of the beam end plate is prolonged.
本发明涉及一种采用UHPC修复受腐蚀桥梁主梁端板的构造和修复方法，其中，主梁端板下端抵接于桥梁支座，包括主梁端板和UHPC，主梁端板包括受腐蚀腹板和未腐蚀腹板，未腐蚀腹板上间隔焊接有多个抗剪螺栓；UHPC浇筑于主梁端板，覆盖于受腐蚀腹板和未腐蚀腹板且包裹多个抗剪螺栓，UHPC下端抵接于桥梁支座。利用UHPC和抗剪螺栓的复合作用，梁端板上的荷载先由未腐蚀的腹板传递到抗剪螺栓上，再由抗剪螺栓传递到UHPC，然后通过UHPC传递到桥梁支座，使得荷载的传导绕开受腐蚀的梁端板，有效降低了受腐蚀部位的应力水平，荷载由钢梁腹板和UHPC共同承担，提高梁端板承载力。UHPC密集填充低渗透性，防止水分到达现有的腐蚀钢，尽量减少未来的腐蚀，延长梁端板的使用寿命。
Structure and method for repairing corroded bridge girder end plate through UHPC
The invention relates to a structure and method for repairing a corroded bridge girder end plate through UHPC, the lower end of the girder end plate abuts against a bridge support, the girder end plate comprises the girder end plate and the UHPC, the girder end plate comprises a corroded web and a non-corroded web, and a plurality of shear bolts are welded to the non-corroded web at intervals; the UHPC is poured on the main beam end plate, covers the corroded web and the non-corroded web and wraps the multiple shear bolts, and the lower end of the UHPC abuts against the bridge support. By utilizing the composite action of the UHPC and the shear bolt, the load on the beam end plate is firstly transmitted to the shear bolt from the uncorroded web, then is transmitted to the UHPC through the shear bolt, and then is transmitted to the bridge support through the UHPC, so that the conduction of the load bypasses the corroded beam end plate, the stress level of the corroded part is effectively reduced, the load is jointly borne by the steel beam web and the UHPC, and the corrosion resistance of the bridge support is improved. The bearing capacity of the beam end plate is improved. UHPC dense filling is low in permeability, water is prevented from reaching existing corrosion steel, future corrosion is reduced as much as possible, and the service life of the beam end plate is prolonged.
本发明涉及一种采用UHPC修复受腐蚀桥梁主梁端板的构造和修复方法，其中，主梁端板下端抵接于桥梁支座，包括主梁端板和UHPC，主梁端板包括受腐蚀腹板和未腐蚀腹板，未腐蚀腹板上间隔焊接有多个抗剪螺栓；UHPC浇筑于主梁端板，覆盖于受腐蚀腹板和未腐蚀腹板且包裹多个抗剪螺栓，UHPC下端抵接于桥梁支座。利用UHPC和抗剪螺栓的复合作用，梁端板上的荷载先由未腐蚀的腹板传递到抗剪螺栓上，再由抗剪螺栓传递到UHPC，然后通过UHPC传递到桥梁支座，使得荷载的传导绕开受腐蚀的梁端板，有效降低了受腐蚀部位的应力水平，荷载由钢梁腹板和UHPC共同承担，提高梁端板承载力。UHPC密集填充低渗透性，防止水分到达现有的腐蚀钢，尽量减少未来的腐蚀，延长梁端板的使用寿命。
Structure and method for repairing corroded bridge girder end plate through UHPC
一种采用UHPC修复受腐蚀桥梁主梁端板的构造和修复方法
YAN QUANSHENG (Autor:in) / ZHENG JINLIN (Autor:in) / JIA BUYU (Autor:in) / YU XIAOLIN (Autor:in) / YANG ZHENG (Autor:in)
25.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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