應(yīng)用研究 2025年 第卷 第18期
DOI: 10. 7672 / sgjs2025180077
獅子洋大橋西高墩區(qū)引橋墩身施工關(guān)鍵技術(shù)
田飛1’2’3,廖林沖1,李培育1
作者簡介：
田飛，高級工程師，E-mail:990817615@ qq. com作者單位：
1.中交第二航務(wù)工程局有限公司，湖北武漢 430040;2.長大橋梁建設(shè)施工技術(shù)交通行業(yè)重點(diǎn)實(shí)驗(yàn)室，湖北武漢 430040;3.交通運(yùn)輸行業(yè)交通基礎(chǔ)設(shè)施智能制造技術(shù)研發(fā)中心，湖北武漢 430040摘要：
獅子洋大橋?yàn)橹骺?2180m 的單跨雙層鋼桁梁懸索橋，南沙側(cè)西高墩區(qū)引橋下部結(jié)構(gòu)為門式墩，具有墩身高、截面尺寸大、外觀要求高的特點(diǎn)。墩身總體采用 6m/節(jié)的翻模法施工工藝，鋼筋采用整節(jié)段部品制作、現(xiàn)場錐套連接方式；研制了基于氣囊的墩身養(yǎng)護(hù)罩，在保障混凝土養(yǎng)護(hù)時(shí)長的前提下提升了模板周轉(zhuǎn)效率，墩身現(xiàn)場施工效率達(dá)到 1.5m/ d;墩身混凝土內(nèi)埋置冷卻水管，結(jié)合有限元分析，通過智能溫控系統(tǒng)控制冷水管流量及溫度，有效控制了墩身混凝土內(nèi)部溫峰及里表溫差。實(shí)踐表明，墩身施工形成的系列技術(shù)成果可有效提升墩身施工品質(zhì)及效率。
English：
Shiziyang Bridge is a single-span double-layer steel truss girder suspension bridge with a mainspan of 2180m,and the substructure of the approach bridge in west high-pier area on the Nansha side isa portal pier,which has the characteristics of high pier, large cross-sectional size. The appearancerequirements of the pier are higher. The pier body adopted the construction technology of 6m / sectionturnover formwork method. the reinforcement adopted the whole section of the parts production. Tapersleeve connection was used between reinforcing parts. At the same time,the pier curing cover based onairbag was developed,which improved the turnover efficiency of the formwork under the premise ofensuring the concrete curing time. The on-site construction efficiency of the pier reached 1.5m / d.Cooling water pipe was embedded in the concrete of the pier. The flow and temperature of the cold waterpipe were controlled by the intelligent temperature control system,which effectively controlled the internaltemperature peak and the temperature difference of the pier concrete. Practice shows that a series oftechnical achievements formed by pier construction can effectively improve the quality and efficiency ofpier construction.