深水雙壁鋼圍堰施工技術(shù)探討

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摘  要：某大橋橋墩位于深水河流中，承臺(tái)類型為低樁承臺(tái)，設(shè)計(jì)施工采用雙壁鋼圍堰方案。該文通過(guò)對(duì)雙壁鋼圍堰的制作、安裝、下放和封底施工技術(shù)進(jìn)行總結(jié)梳理，分析各個(gè)階段的操作方法和重點(diǎn)管控措施，以及對(duì)施工中可能會(huì)出現(xiàn)的問(wèn)題展開論述，提出一些應(yīng)對(duì)措施和處理方法，為同類鋼圍堰的施工積累經(jīng)驗(yàn)。

關(guān)鍵詞：深水施工；低樁承臺(tái)；雙壁鋼圍堰；下放系統(tǒng)；吸泥；砼封底

中圖分類號(hào)：U445.55      文獻(xiàn)標(biāo)志碼：A          文章編號(hào)：2095-2945（2024）29-0189-04

Abstract： The pier of a bridge is located in the deep-water river， the type of cap is low pile cap， and the design and construction of double-wall steel cofferdam is adopted. This paper summarizes the construction technology of double-wall steel cofferdam， analyzes the operation methods and key management and control measures in each stage， discusses the problems that may occur in the construction， and puts forward some countermeasures and treatment methods， so as to accumulate experience for the construction of similar steel cofferdams.

Keywords： deep water construction; low pile cap; double-wall steel cofferdam; lowering system; mud suction; concrete bottom sealing

目前跨江或跨海大橋已比較常見(jiàn)，水上作業(yè)受水流、潮汐、水流深度等影響較大，一般來(lái)說(shuō)，水上樁基施工完成之后緊接著要做水上大型圍堰。（剩余4130字）