Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for reconstructing steel truss arch bridge by using existing bridge
The invention relates to a construction method for reconstructing a steel truss arch bridge by using an existing bridge, which comprises the following steps of: after a side span steel truss arch is closed, sequentially erecting a lower bracket, a side straining beam, an upper bracket and an end section of a main span steel truss arch from bottom to top on one side, close to a main span, of the side span steel truss arch; the method comprises the following steps: erecting a bridge floor bracket with an overhanging cantilever on a bridge floor of an old bridge, erecting a section of a middle straining beam to a closure opening through the overhanging cantilever, and adjusting the position of the section to finish the closure of the straining beam; a middle section of the main span steel truss arch is erected on the upper support and the bridge floor support, and folding of the main span steel truss arch is completed; installing a temporary wind brace, installing a sling, dismantling an upper support and a bridge floor support, tensioning the sling, and dismantling a lower support; according to the sequence from the midspan to the side span, the bridge floor of the old bridge is cut off segment by segment, the cross beam is installed, and the bridge floor system is installed. The method has the advantages that the installation stability of the arched beam is guaranteed, the construction efficiency is improved, and the construction cost is reduced.
本发明涉及一种利用既有桥梁改建钢桁拱桥的施工方法，其包括以下步骤，边跨钢桁拱合拢完成后，在边跨钢桁拱靠近主跨的一侧自下而上依次架设下部支架、边系梁、上部支架、以及主跨钢桁拱的端部节段；在旧桥的桥面上架设带有外挑悬臂的桥面支架后，通过外挑悬臂将中系梁的节段架设至合拢口，并进行节段调位，完成系梁的合拢；在上部支架和桥面支架上架设主跨钢桁拱的中部节段，完成主跨钢桁拱的合拢；安装临时风撑，安装吊索，拆除上部支架和桥面支架，张拉吊索，拆除下部支架；按照由跨中向边跨的顺序，节段切除旧桥的桥面并安装横梁，安装桥面系。本发明具有保证拱梁的安装稳定性、提高施工效率、降低施工成本的优点。
Construction method for reconstructing steel truss arch bridge by using existing bridge
The invention relates to a construction method for reconstructing a steel truss arch bridge by using an existing bridge, which comprises the following steps of: after a side span steel truss arch is closed, sequentially erecting a lower bracket, a side straining beam, an upper bracket and an end section of a main span steel truss arch from bottom to top on one side, close to a main span, of the side span steel truss arch; the method comprises the following steps: erecting a bridge floor bracket with an overhanging cantilever on a bridge floor of an old bridge, erecting a section of a middle straining beam to a closure opening through the overhanging cantilever, and adjusting the position of the section to finish the closure of the straining beam; a middle section of the main span steel truss arch is erected on the upper support and the bridge floor support, and folding of the main span steel truss arch is completed; installing a temporary wind brace, installing a sling, dismantling an upper support and a bridge floor support, tensioning the sling, and dismantling a lower support; according to the sequence from the midspan to the side span, the bridge floor of the old bridge is cut off segment by segment, the cross beam is installed, and the bridge floor system is installed. The method has the advantages that the installation stability of the arched beam is guaranteed, the construction efficiency is improved, and the construction cost is reduced.
本发明涉及一种利用既有桥梁改建钢桁拱桥的施工方法，其包括以下步骤，边跨钢桁拱合拢完成后，在边跨钢桁拱靠近主跨的一侧自下而上依次架设下部支架、边系梁、上部支架、以及主跨钢桁拱的端部节段；在旧桥的桥面上架设带有外挑悬臂的桥面支架后，通过外挑悬臂将中系梁的节段架设至合拢口，并进行节段调位，完成系梁的合拢；在上部支架和桥面支架上架设主跨钢桁拱的中部节段，完成主跨钢桁拱的合拢；安装临时风撑，安装吊索，拆除上部支架和桥面支架，张拉吊索，拆除下部支架；按照由跨中向边跨的顺序，节段切除旧桥的桥面并安装横梁，安装桥面系。本发明具有保证拱梁的安装稳定性、提高施工效率、降低施工成本的优点。
Construction method for reconstructing steel truss arch bridge by using existing bridge
一种利用既有桥梁改建钢桁拱桥的施工方法
REN ZHIQIN (Autor:in) / HAO WEILI (Autor:in) / HU PENGFEI (Autor:in) / LAI QIANG (Autor:in) / ZHANG TENGLONG (Autor:in) / LU SHAOKAI (Autor:in) / ZHENG LIQIN (Autor:in) / MA ZIYANG (Autor:in) / LI CHUPING (Autor:in) / XIE YUE (Autor:in)
10.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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