结合梁桥面系异形钢箱拱肋系杆拱桥设计  

Design of Special-shaped Steel Box Arch Rib Bowstring Arched Bridge of Bonding Beam Deck System

作　　者：李文勃[1] 

机构地区：[1]上海市政工程设计研究总院,上海200092

出　　处：《城市道桥与防洪》2009年第7期72-78,共7页Urban Roads Bridges & Flood Control

摘　　要：莆田城港大道跨木兰溪大桥主桥是两跨简支的双肋下承式钢箱拱肋结合梁桥面系的异形系杆拱桥,单跨跨径72m,桥宽47.5m,城-A级荷载,双向8车道。该文以该桥的初步设计和施工图设计为基础,介绍了异形系杆拱桥的桥型方案研究、主桥结构设计、结构计算分析等内容,并分析了该桥的一些技术特点。该桥的弯曲河道斜交主桥设计方法、结合梁在拱桥中的设计思想、结合梁横梁设置临时支点改善结构受力、独特拱肋造型的设计方法等内容,可供类似桥梁设计时参考。The main bridge of Putian Chenggang Avenue Bridge crossing Molan River is the special-shaped bowstring arched bridge of 2-span simple-supported double-rib half-through steel box arch rib bonding beam deck system.The single span is 72 m long and the bridge is 47.5 m wide with city-Class A load and double-direction of 8 lanes.Taking the preliminary design and construction drawing design of this bridge as the basis,the article introduces the scheme study of bridge type,structural design of main bridge and analysis of structural calculation of the special-shaped bowstring arched bridge,and analyzes some technical characteristics of this bridge.The design method of the main bridge inclined crossed with the curve river,the design thinks of bonding beam in the arched bridge,the temporary constructed supporting point for improving the structural bearing,and the design method of special arch rib modeling can be referred for the design of the similar bridges.

关 键 词：系杆拱桥 异形拱桥 钢箱拱肋 结合梁 福建莆田 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]