Abstract
The construction process of the CFST arch bridge is complicated. The construction process not only affects the structural stress in the installation, but also determines the form a bridge and internal force of the bridge. In this paper, a 60m span concrete filled steel tube tied arch bridge is taken as the background, and a three-dimensional finite element simulation model is established by using the MIDAS/Civil bridge structure analysis software. The elevation of the main arch ring, the beam stress, the forces in hanger rods and the modal frequency of the main arch during the construction stage are calculated, and the construction process is simulated and analyzed. Effectively and reasonably guide the construction and ensure that the line and force conditions of the completed bridge meet the design requirements and provides a reliable technical guarantee for the safe construction of the bridge.
Highlights
The engineering background of this paper is a supported concrete-filled steel tube tied arch bridge, which is located on the new urban road of Suijiang County in Yunnan, China
Concrete filled in bridge deck and steel tube arch rib is C50 micro-expansive concrete, the crossbeam of tie beam with C50 concrete; all ordinary steel bars are HRB400
There are 10 main kinds of calculation section types of the unit, in which the concrete filled steel tube is used in the joint section of the construction stage, and there are 3 types of material types
Summary
The engineering background of this paper is a supported concrete-filled steel tube tied arch bridge, which is located on the new urban road of Suijiang County in Yunnan, China. It is part of the relocation project of Xiangjiaba Hydropower Station. Concrete filled in bridge deck and steel tube arch rib is C50 micro-expansive concrete, the crossbeam of tie beam with C50 concrete; all ordinary steel bars are HRB400. There are 10 main kinds of calculation section types of the unit (variable cross-section is automatically calculated by the program), in which the concrete filled steel tube is used in the joint section of the construction stage, and there are 3 types of material types.
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