关键词: 桥梁工程, 地锚式, 单跨, 独塔斜拉桥, 斜塔斜拉桥, 结构体系

Abstract: Furongjiang River Bridge is an earthanchored single span and single inclined pylon cablestayed bridge, with five major characteristics, that is “pylon”, “earthanchored”, “single span”, “full concrete”, and “large span”. Five key parameters, namely, the earth anchorage box position, the inclination angle and oblique height of pylon, selfstiffness of pylon and girder were selected to study their impacts on bridge stress. And then, more reasonable parameter values of the fullbridge stress state were obtained. The results show that anchor cable has more contribution on the overall stiffness of the pylon when the earth anchorage box position is far away from the pylon, but it has little impact to the vertical stiffness of girder. Increasing selfstiffness of pylon and girder has very little effect on the fullbridge stiffness and vibration frequency, while adjusting key parameters, for example, the position of earth anchorage box, is more efficient.

Key words: bridge engineering, earthanchored, single span, single pylon cablestayed bridge, inclined pylon cablestayed bridge, structure system