Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete core grinding construction method for reinforced concrete plane swivel arch bridge
The invention discloses a concrete core grinding construction method for a reinforced concrete plane swivel arch bridge, and relates to the technical field of reinforced concrete. The method comprises the steps of positioning of a grinding core steel shaft, manufacturing of the grinding core, installation of the grinding core and primary grinding of the grinding core, and the positioning of the grinding core steel shaft comprises the following steps that firstly, the grinding core steel shaft is positioned on a pre-embedded steel plate of a lower rotary table for first-time concrete pouring; and secondly, the planar position and elevation of the pre-embedded steel plate are accurately determined by a total station in puring the first concrete, the plane position deviation is in a range of +/-5mm, and the elevation is controlled in a range of +/-2mm. According to the method, the grinding is carried out when the top steel bars of the grinding core are bound, the thickness of the protection layer of the grinding core is strictly controlled, and then the thickness deviation of the protection layer can only have positive deviation, so that the steel bars are prevented from being exposed in the grinding core running-in process, the grinding core and the grinding cover are completely run-in, the rotation section can normally rotate, and unstable rotation is avoided.
本发明公开了一种钢筋混凝土平面转体拱桥混凝土磨心施工方法，涉及钢筋混凝土技术领域。本发明包括磨心钢轴定位、磨心制作、磨心安装和磨心初磨，磨心钢轴定位包括以下步骤：步骤一：将磨心钢轴定位在下转盘第一次浇筑混凝土的预埋钢板上，步骤二：在浇筑第一次混凝土时利用全站仪准确定位预埋钢板的平面位置和高程，使平面位置偏差在±5mm范围内，高程控制在±2mm范围内。本发明通过在绑扎磨心顶层钢筋时带磨进行安装，严格控制磨心保护层厚度，进而使保护层厚度偏差只能存在正偏差，这样防止在磨心磨合过程中造成钢筋外露，使磨心和磨盖完全磨合，使转体段可以正常转动，避免转体不稳。
Concrete core grinding construction method for reinforced concrete plane swivel arch bridge
The invention discloses a concrete core grinding construction method for a reinforced concrete plane swivel arch bridge, and relates to the technical field of reinforced concrete. The method comprises the steps of positioning of a grinding core steel shaft, manufacturing of the grinding core, installation of the grinding core and primary grinding of the grinding core, and the positioning of the grinding core steel shaft comprises the following steps that firstly, the grinding core steel shaft is positioned on a pre-embedded steel plate of a lower rotary table for first-time concrete pouring; and secondly, the planar position and elevation of the pre-embedded steel plate are accurately determined by a total station in puring the first concrete, the plane position deviation is in a range of +/-5mm, and the elevation is controlled in a range of +/-2mm. According to the method, the grinding is carried out when the top steel bars of the grinding core are bound, the thickness of the protection layer of the grinding core is strictly controlled, and then the thickness deviation of the protection layer can only have positive deviation, so that the steel bars are prevented from being exposed in the grinding core running-in process, the grinding core and the grinding cover are completely run-in, the rotation section can normally rotate, and unstable rotation is avoided.
本发明公开了一种钢筋混凝土平面转体拱桥混凝土磨心施工方法，涉及钢筋混凝土技术领域。本发明包括磨心钢轴定位、磨心制作、磨心安装和磨心初磨，磨心钢轴定位包括以下步骤：步骤一：将磨心钢轴定位在下转盘第一次浇筑混凝土的预埋钢板上，步骤二：在浇筑第一次混凝土时利用全站仪准确定位预埋钢板的平面位置和高程，使平面位置偏差在±5mm范围内，高程控制在±2mm范围内。本发明通过在绑扎磨心顶层钢筋时带磨进行安装，严格控制磨心保护层厚度，进而使保护层厚度偏差只能存在正偏差，这样防止在磨心磨合过程中造成钢筋外露，使磨心和磨盖完全磨合，使转体段可以正常转动，避免转体不稳。
Concrete core grinding construction method for reinforced concrete plane swivel arch bridge
一种钢筋混凝土平面转体拱桥混凝土磨心施工方法
CHEN YANYAN (Autor:in) / SHA JIAN (Autor:in) / HU WENMING (Autor:in)
12.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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