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悬带拱桥,是一种将以受压为主的拱与受拉的悬带结构结合起来的新型桥梁结构。该文以威尼斯四桥(现名宪法桥)为工程背景,进行了悬带拱桥的试设计。应用有限元方法,对原桥与试设计的悬带拱桥的静力性能、人行舒适度和抗震性能等方面进行了分析和比较。结果表明:试设计的悬带拱桥减小了竖向刚度和拱对桥台基础的水平推力,降低了地震作用下的横向弯矩和扭矩、纵向弯矩和轴力,同时大大降低了工程造价。
Suspended arch bridge is a new type of bridge structure that combines a compression-based arch with a tensioned suspension structure. Taking the Bridge of Four in Venice (now the Constitution Bridge) as the background of the project, the design of suspension bridge arch bridge was carried out. The finite element method is used to analyze and compare the static performance, pedestrian comfort and seismic performance of the original suspension bridge with the original suspension bridge. The results show that the suspended suspension arch bridge reduces the vertical stiffness and the horizontal thrust of arch to abutment foundation, decreases the lateral bending moment and torque, longitudinal bending moment and axial force under earthquake and greatly reduces the construction cost .