市政技术2023，Vol.41Issue(12)：40-44,5.DOI:10.19922/j.1009-7767.2023.12.040
洪州大桥主墩承台围堰施工关键技术研究
Research on Key Technologies of Cofferdam Construction for Bearing Platform of Main Piers of Hongzhou Bridge
高小明 1熊红平 1邱衍坚 1胡峰强2
作者信息
- 1. 南昌市政公用工程项目管理公司,江西南昌 330000
- 2. 南昌大学工程建设学院,江西南昌 330029
- 折叠
摘要
Abstract
The main bridge of Hongzhou Bridge of Nanchang City in Jiangxi Province is a self-anchored suspension bridge with steel-concrete composite beams and double towers with double cable plane.The main pier is set with two independent cofferdams.The cofferdams are made of circular cofferdams supported by lock-gate steel pipe piles and piers.The pier structure is reasonable.During the construction,the inner support of the pier is first installed on the drilling platform.And then,guided by the ring beam the lock steel pipe pile is driven by the combination of DZ-90 vibration hammer and YC-5 hydraulic impact hammer after the total lowering.At the same time,the vertical degree,rock depth and plane position of the lock steel pipe pile are controlled to optimize the closing process.Finally,the pier construction is quickly completed.The relevant research can provide reference for similar projects.关键词
自锚式悬索桥/主墩承台/圆形围堰/锁扣钢管桩/围檩内支撑/施工关键技术Key words
self-anchored suspension bridge/the bearing platform of the main pier/circular cofferdam/interlocked steel pipe pile/the inner support of the surrounding pier/the key construction techniques分类
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高小明,熊红平,邱衍坚,胡峰强..洪州大桥主墩承台围堰施工关键技术研究[J].市政技术,2023,41(12):40-44,5.
