太原北中环跨汾河大桥快速施工方案  

Rapid Construction Scheme for Fenhe River Bridge on Central Ring Road in Northern Taiyuan

作　　者：胡永生 

机构地区：[1]中铁大桥局股份有限公司,湖北武汉430050

出　　处：《世界桥梁》2014年第3期20-24,共5页World Bridges

摘　　要：太原北中环跨汾河大桥为五跨对称五拱反对称索面斜拉桥,跨径布置为(65+45+90+45+65)m,针对该桥梁结构新颖、工程量大、施工场地狭窄、施工工期短等特点,以缩短施工工期为目标,对施工平面布置、基础施工、钢箱梁安装、钢拱塔安装、斜拉索安装等进行研究,提出解决方案。研究结果及工程实践表明,开展多作业面同步施工、采用旋挖钻机钻孔、钢板桩围堰施工承台及拱座、钢箱梁架设分3个作业面同步展开、施工大临结构采用常备式杆件、钢拱塔与钢箱梁同步施工、钢拱塔采用大节段吊装等技术措施的采用,有效加快了该桥的建设速度。The Fenhe River Bridge on the Central Ring Road in northern Taiyuan is a （65 ＋ 45 ＋90 ＋ 45 ＋ 65）m cable-stayed bridge with five symmetrical spans and five skew-symmetrical arches and cable planes .The bridge structure is groundbreaking and its construction has to face a few challenges ,such as the enormous amount of construction work ,the narrow construction site and the tight construction schedule .Studies were carried out in terms of the construction plan arrange-ment ,foundation construction ,steel box girder erection ,steel arches erection and stay cables in-stallation ,aiming to cut down the construction schedule and put forward a rational solution .The results of the study and engineering experience prove that the construction speed of the bridge is effectively accelerated by taking a series of technical measures ,including the parallel construction of multiple operation platforms ,using the rotary drilling rig in hole drilling ,applying steel sheet pile cofferdam to pile caps construction and carrying out the arch seats construction and the erec -tion of the steel box girder on three operation platforms simultaneously ,using standard chords in constructing large temporary structures ,the parallel construction of steel arches and the steel box girder ,and taking the long-segment hoisting and erection method in steel arch erection .

关 键 词：斜拉桥 反对称索面 基础 钢箱梁 拱形钢塔 同步施工 快速施工 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U445.4[交通运输工程—道路与铁道工程]