福州城区跨江大桥桥墩冲刷调查及对策  

Investigation and Countermeasures for Pier Scouring of River-spanning Bridge in Fuzhou Urban Area

作　　者：杨为太 YANG Weitai(Fuzhou Municipal Engineering Center,Fuzhou 350004)

机构地区：[1]福州市市政工程中心,福建福州350004

出　　处：《福建建筑》2023年第8期127-130,共4页Fujian Architecture & Construction

摘　　要：冲刷是导致桥梁水毁的重要因素之一。以福州闽江跨江大桥为例,调查研究桥墩冲刷深度以及混凝土病害情况,分析桥墩冲刷的原因,提出需重点关注的问题及对策建议。结果表明:北港跨江大桥桥墩处河床从2012年至今基本稳定,但南港跨江大桥桥墩处河床出现下切趋势;在水位变动处桥墩混凝土剥落、露筋现象较严重,采砂是引起桥墩冲刷下切最主要的因素;而潮水上溯是引起混凝土病害最主要的因素。为此,建议加强闽江河道以及桥梁设计、施工、管养机制。Scouring is one of the important factors leading to bridge disaster by flood.Taking the Minjiang river-spanning Bridge in Fuzhou as an example,an investigation has been conducted to investigate the depth of pier scouring and the concrete disease situation.The cause of bridge pier scouring has been analyzed and Issues that need to be focused on and suggestions for countermeasures have been proposed.The results show that the pier scouring of river-spanning bridge in north port has been basically stable since 2012,but the pier scouring of river-spanning bridge in south port is still undercutting.The phenomenon of concrete peeling and exposed reinforcement of bridge piers is more severe at the location of water level fluctuations.Sand mining is the main factor causing scouring and undercutting of bridge piers and tidal uptracking is the main and important factor causing concrete diseases.Suggest strengthening the design,construction,and management and maintenance mechanisms of the Minjiang river channel and bridges.

关 键 词：桥墩冲刷 影响因素 采砂 潮水上溯 对策建议 

分 类 号：TU99[建筑科学—市政工程]