外文翻譯---混凝土梁橋的結(jié)構(gòu)形式-文庫吧
2025-04-17 09:11 本頁面
【正文】 的一個結(jié)構(gòu)類型是 壓帶式橋 。 壓帶是 橋運輸跨越萊茵河的一個管道和人行 道，跨徑 446 英尺 。上部結(jié)構(gòu)的施工順序是（ a）垂直的一對懸索， (b)在每個懸索的下面，安置預(yù)制板形成一人行道甲板和 一 U 型 的平臺 , 并且 (c)在附近現(xiàn)場澆注混凝土。放置在頂部的管道支撐在扶手的頂部，向一邊傾斜， 大幅地增加結(jié)構(gòu)的主要風(fēng)速。 討論橋梁形式應(yīng)適當(dāng)?shù)目紤]結(jié)構(gòu)的美學(xué)。當(dāng)結(jié)構(gòu)可能根據(jù)最小的費用和技術(shù)設(shè)計的時候，時間消逝了。特別是橋梁結(jié)構(gòu)到處可見。生產(chǎn)視覺上不愉快的結(jié)構(gòu) , 過去經(jīng)常發(fā)生 , 是一種不負(fù)專業(yè)責(zé)任的行為。特別地對于主要的跨距， 還有一些比較普通的結(jié)構(gòu)來說 ，應(yīng)該在設(shè)計過程的概念階段尋找建筑的 建議。 出處： 安瑞克．混凝土橋梁結(jié)構(gòu)形式 [J]．建筑實錄 (美 )， 2020， 33(36)： 34—36 3 The Structure of Concrete Bridge Prestressed concrete has proved to be technically advantageous, economically petitive, and esthetically superior bridges, from very short span structures using standard ponents to cablestayed girders and continuous box girders with clear spans of nearly 100aft .Nearly all concrete bridges, even those of relatively short span, are now prestressed. Precasting, castinplace construction, or a bination of the two methods may be used .Both pretensioning and post tensioning are employed, often on the same project. In the United States, highway bridges generally mustmeet loading ,design ,and construction requirements of the AASHTO Specification .Design requirements for pedestrian crossings and bridges serving other purposes may be established by local or regional codes and specifications .ACI Code provisions are often incorporated by reference . Bridges spans to about 100ft often consist of precast integraldeck units ,which offer low initial cost ,minimum ,maintenance ,and fast easy construction ,with minimum traffic interruption .Such girders are generally pretensioned .The units are placed side by side ,and are often posttensioned laterally at intermediate diaphragm locations ,aft
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