江西吉水赣江二桥工程总体设计  

Master Design of Ganjiang River Bridge No.2 Project in Jishui of Jiangxi

作　　者：李永君[1] 戴建国[1] 卢永成[1] 

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海市200092

出　　处：《城市道桥与防洪》2016年第1期59-63,9,共5页Urban Roads Bridges & Flood Control

摘　　要：吉水赣江二桥工程桥梁全长1310 m,主桥采用跨径为2×110 m的独塔斜拉桥,江中引桥采用40 m标准跨径预应力混凝土预制小箱梁桥,陆上引桥采用预应力混凝土大箱梁桥。斜拉桥采用预应力混凝土双肋式主梁、双索面斜拉索,主塔上塔柱采用钢结构,下塔柱采用混凝土结构,中间设置钢混结合段。钢混结合段采用有格室后承压板形式,钢与混凝土间通过焊钉和开孔板连接件结合。为研究其受力性能,进行了缩尺比为1:3的模型加载试验。试验结果表明,该桥结合段受力合理。重点介绍该工程总体设计、科研试验及主塔技术特色。The total length of Jishui Ganjiang River Bridge No.2 Project is 1310 m.Its main bridge is a single—pylon cable-stayed bridge with two 110-m spans.Its approach bridge is a pre-stressed concrete precast small-box beam bridge with the standard spans of 40 m in the river and the approach bridge on land is a pre-stressed big-box beam bridge.The structure of cable-stayed bridge is the pre-stressed concrete double-rib girder and double-plane stayed cable.The upper pylon column of main pylon is the steel structure and the lower pylon column is the concrete structure,in between the steel-concrete joint section is set up.The steel-concrete joint section is in the form of cell rear bearing plates.The steel and concrete are connected by welded studs and perforated plates.In order to study its stress performance,the 1:3 reduced scale model of loading test is carried out.The test result shows that the stress of joint section is rational.This paper mainly introduces the master design of this project,its scientific research test and the technical features of the main pylon.

关 键 词：总体设计 独塔斜拉桥 钢混组合塔 钢混结合段 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]