Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for mounting main bridge variable cross-section continuous steel truss girder by using cable crane
The invention discloses a method for installing a main bridge variable cross-section continuous steel truss girder by using a cable crane, and belongs to the field of bridges. The method comprises thesteps of firstly, constructing a pier top steel truss girder; then conducting main girder cantilever assembling construction, specifically, hoisting steel truss girder sections on the two sides of each main pier through symmetrical cantilevers of the cable crane, and installing the steel truss girder sections; arranging a lower parallel connection concrete plate at the steel truss girder section,and conducting construction of a second steel truss girder section of each main pier; after third steel truss girder sections of the main piers are connected, pouring concrete into the steel truss girder rod pieces of the sections; after the concrete in the rod pieces meets the requirement, conducting next steel truss girder section construction of each main pier, and stopping mid-span construction until the previous section of the closure section is reached. By adopting the scheme, the acting force of the deck crane on the steel truss girder is avoided, the stress of the pier girder joint part is reduced, the symmetrical cantilever assembly can be realized relative to each bridge main pier, the construction operation surface is increased, and the construction progress is accelerated.
本发明公开了一种利用缆索吊机安装主桥变截面连续钢桁梁的方法，属于桥梁领域，其步骤如下：首先进行墩顶钢桁梁施工；然后进行主梁悬臂拼装施工：用缆索吊机对称悬臂吊装各主墩两侧钢桁梁节段，对钢桁梁节段进行安装；并在此钢桁梁节段处设下平联混凝土板，进行各主墩第二钢桁梁节段施工；各主墩第三钢桁梁节段连接完成后，在此节段的钢桁梁杆件内浇筑混凝土；杆件内混凝土到达要求后，进行各主墩下一钢桁梁节段施工，中跨施工至合拢段的前一节段时停止；最后边跨、中跨合拢，采用该方案不仅没有了桥面吊机对钢桁梁的作用力，减少了墩梁结合部的受力，而且相对于每个桥梁主墩可实现对称悬臂拼装，增加了施工作业面，加快了施工进度。
Method for mounting main bridge variable cross-section continuous steel truss girder by using cable crane
The invention discloses a method for installing a main bridge variable cross-section continuous steel truss girder by using a cable crane, and belongs to the field of bridges. The method comprises thesteps of firstly, constructing a pier top steel truss girder; then conducting main girder cantilever assembling construction, specifically, hoisting steel truss girder sections on the two sides of each main pier through symmetrical cantilevers of the cable crane, and installing the steel truss girder sections; arranging a lower parallel connection concrete plate at the steel truss girder section,and conducting construction of a second steel truss girder section of each main pier; after third steel truss girder sections of the main piers are connected, pouring concrete into the steel truss girder rod pieces of the sections; after the concrete in the rod pieces meets the requirement, conducting next steel truss girder section construction of each main pier, and stopping mid-span construction until the previous section of the closure section is reached. By adopting the scheme, the acting force of the deck crane on the steel truss girder is avoided, the stress of the pier girder joint part is reduced, the symmetrical cantilever assembly can be realized relative to each bridge main pier, the construction operation surface is increased, and the construction progress is accelerated.
本发明公开了一种利用缆索吊机安装主桥变截面连续钢桁梁的方法，属于桥梁领域，其步骤如下：首先进行墩顶钢桁梁施工；然后进行主梁悬臂拼装施工：用缆索吊机对称悬臂吊装各主墩两侧钢桁梁节段，对钢桁梁节段进行安装；并在此钢桁梁节段处设下平联混凝土板，进行各主墩第二钢桁梁节段施工；各主墩第三钢桁梁节段连接完成后，在此节段的钢桁梁杆件内浇筑混凝土；杆件内混凝土到达要求后，进行各主墩下一钢桁梁节段施工，中跨施工至合拢段的前一节段时停止；最后边跨、中跨合拢，采用该方案不仅没有了桥面吊机对钢桁梁的作用力，减少了墩梁结合部的受力，而且相对于每个桥梁主墩可实现对称悬臂拼装，增加了施工作业面，加快了施工进度。
Method for mounting main bridge variable cross-section continuous steel truss girder by using cable crane
一种利用缆索吊机安装主桥变截面连续钢桁梁的方法
CAI JUNHUA (Autor:in) / WEI YUJI (Autor:in) / LIN JINSHUN (Autor:in) / LAN SHENGYUAN (Autor:in) / JIANG CHAO (Autor:in) / ZHANG YOUYI (Autor:in) / QIN XIAOJING (Autor:in) / ZHANG TAO (Autor:in) / ZHENG QIANG (Autor:in) / WU YANG (Autor:in)
31.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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