橋梁設(shè)計(jì)外文翻譯資料--超輕大跨度橋-橋梁設(shè)計(jì)-預(yù)覽頁(yè)
【正文】 nstant wall thickness and a width that varies parabolically over their height. Temporary tiedown piers are used to construct the bridge they are located 35m into each 120mlong side span from the main piers. Each consists of an Ishaped shaft, which is tied down to the ground using rock anchors and connected to the box girder by means of prestressing cables. The purpose of these structural elements is to support the cantilever and prevent rotation in strong winds. Once the bridge superstructure is plete and the main pier prestressing is fully tensioned, the temporary tiedown piers will be removed piece by piece. ****大學(xué)畢業(yè)設(shè)計(jì)（論文） 3 The location of the bridge, only about 100km south of the Arctic Circle, has meant that special measures have to be introduced to allow construction work to continue all year round. Apart from the obvious need to provide site lighting for much of the wintertime, the challenge of concreting in temperatures which can be as low as 0 C has to be overe. Hot concrete is produced for the bridge ?sometimes up to 30 C and the formwork has to be insulated to keep the concrete warm. Electric heating cables are also used on the end of the previous pour to warm up the concrete before casting. Construction of the new bridge began in January 2020 and is expected to be plete in September this year. The construction of the cantilever started in summer last year and is due to be finished in April. When Bdamp。 高強(qiáng)混凝土是此橋的設(shè)計(jì)是主要組成部分，包括正常的重量 HPC 和輕量級(jí) HPC。 為了解決這個(gè)難題 ,承包商采用了在 Raftsundet 橋上用過(guò)的相似的解決辦法。他說(shuō)，它能被抽 120 m，沿著需要凝結(jié)的橋面板位置 . 混凝土在距橋只有 1 km 的一個(gè)可運(yùn)輸?shù)囊苿?dòng)場(chǎng)地生產(chǎn) . 不時(shí)的重量監(jiān)控是必需的，以便懸臂施工時(shí)能適當(dāng)?shù)钠胶?. 這在每次運(yùn)送前都需要被測(cè)試 . 計(jì)劃在 2020 年 1 月在和彈藥箱的制造廠(chǎng)地 Aker Verdal 為碼頭開(kāi)始 . 在 2020 年5 月二個(gè)彈藥箱將被拖放到距橋位置的北方 500 km 處 . 建筑在 situ的橋梁應(yīng)用了被 NRS 改良過(guò)的特別移動(dòng)的建筑儀器 .每 5 m 的橋面板澆筑需要一個(gè)星期 , Sundoya 橋上一共使用了二個(gè)可動(dòng)裝置 . 這些特別的裝置專(zhuān)為 As Anlegg 生產(chǎn)，其已經(jīng)在挪威的 Kristiansand 的 Varodden 橋上使用 ,現(xiàn)在他們也已經(jīng)被相同承包商橋用在 Rafsundet 上。和鄰接結(jié)構(gòu)相似， C25 的混凝土塊在箱梁內(nèi)將會(huì)被用作壓載物 . 除此之外，設(shè)計(jì)者已經(jīng)考慮在箱梁內(nèi)預(yù)留允許添加后預(yù)應(yīng)力鋼絞線(xiàn)的空間。 臨時(shí)約束也被應(yīng)用到此座橋梁上。通過(guò)電暖氣的電纜在早先施工結(jié)束前也被用在混凝土的加溫 . Sundoya 橋在 2020 年 1 月開(kāi)始建筑，預(yù)期在 9
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