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桥面空心板安装阶段主拱圈稳定性研究
Study on Stability of Main Arch Ring during Installation of Hollow Slab on Bridge Deck

DOI: 10.12677/HJCE.2019.87141, PP. 1210-1219

Keywords: 空心板安装,安装顺序,立柱位移,内力,主拱线型,内力,快速施工
Hollow Panel Installation
, Installation Sequence, Column Displacement, Internal Force, Main Arch Form, Internal Force, Rapid Construction

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Abstract:

上承式钢管混凝土拱桥空心板架设遵循纵、横向对称原则架设,本文以找龙坝河特大桥施工为例,采用Midas civil建模模拟计算运梁车上桥紧跟缆索吊逐孔横向对称架设工况,最终在监控单位的指导下动态调整架设顺序,在保证纵、横向对称架设的大原则下,优化小循环架设顺序,在保证立柱、主拱线型及内力满足规范的要求下,分四个阶段迅速完成全桥空心板架设。
The hollow slab erection of concrete filled steel tube arch bridge is based on the principle of lon-gitudinal and transverse symmetry. In this paper, taking the construction of zhaolongba river bridge as an example, Midas civil modeling is adopted to simulate and calculate the transverse symmetrical erection condition of the bridge on the girder carriage following the cable crane by hole. Finally, under the guidance of the monitoring unit, the order of erection was dynamically adjusted. Under the principle of symmetrical vertical and horizontal erection, the order of mi-nor-cycle erection was optimized. Under the condition that the columns, main arch lines and in-ternal forces met the requirements of the specification, the erection of the whole hollow slab of the bridge was completed rapidly in four stages.

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