城市天桥中尼尔森体系下承式拱桥的应用研究

Study on the application of through arch bridge under Nielsen System in urban overpass

随着经济和社会的发展,城市人行天桥除满足基本通行功能外,还需满足人们对地标性建筑美学的需要。以一座尼尔森体系下承式人行景观桥梁为例,阐述人行景观桥梁的设计理念、结构设计思路,基于全过程分析方法,论证了尼尔森体系拱桥方案的优越性,并对尼尔森体系拱桥进行静力、动力分析,以期为其余类似情况下的桥梁设计提供参考。

With the development of economy and society,urban pedestrian overpass not only meets the basic traffic function,but also meets the needs of people for landmark building aesthetics.Taking a pedestrian landscape bridge under Nielsen system as an example,this paper expounds the design concept and structural design idea of pedestrian landscape bridge.Based on the whole process analysis method,it demonstrates the advantages of the Nielsen system arch bridge scheme,and analyzes the static and dynamic forces of the Nielsen system arch bridge,in order to provide reference for other similar cases of bridge design.