大跨度混凝土梁斜拉桥挂篮设计及安装技术
Design and Installation Technology of Hanging Basket for Long-Span Concrete Girder Cable-Stayed Bridge
曾宪柳 1庞建国 1陈诚1
作者信息
- 1. 中交第二航务工程局第五工程分公司,湖北 武汉 430040
- 折叠
摘要
准格尔黄河特大桥主桥为(160+440+160)m双塔双索面全漂浮体系混凝土梁斜拉桥,主梁宽为28.4 m双边箱预应力混凝土结构,采用前支点挂篮悬臂浇筑施工,最大悬浇节段重5 800 kN.为了保证挂篮整体刚度,挂篮承载平台采用钢箱梁结构,为方便挂篮运输及安装,长大构件采取分段制作高强螺栓连接;挂篮采用"二次接长"技术减少高空支架搭设工程量;挂篮下放、行走、提升采用一键启动自动化同步控制技术,斜拉索索力转换装置、挂篮安装支架设计了一系列新工艺和创新技术.
Abstract
The main bridge of Zhungeer Yellow River Super Major Bridge is a(160+440+160)m double tower double cable plane full floating system concrete grider cable-stayed bridge.The main beam is a 28.4m wide double box prestressed concrete structure.It was constructed by cantilever pouring with a front fulcrum hanging basket.The maximum weight of the cantilever pouring section is 5 800 kN.To ensure the integral rigidity of the hanging basket,the hanging basket bearing platform adopted the steel box girder structure.The long and large components were connected by high-strength bolts made in sections to facilitate the transportation and installation of the hanging basket.The hanging basket adopted the"secondary lengthening"technology to reduce the quantities of high-altitude support erection;The one-click start automatic synchronous control technology was adopted for the lowering,walking,and lifting of the hanging basket.A series of new processes and innovative technologies are designed for the cable-stayed cable force conversion device and the hanging basket installation support.
关键词
斜拉桥/悬浇主梁/挂篮/设计/安装Key words
cable-stayed bridge/cantilever cast main beam/hanging basket/design/installation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据