外文翻譯——預(yù)應(yīng)力混凝土建筑-建筑結(jié)構(gòu)(存儲(chǔ)版)
【正文】 chitectengineer a freedom for variation and an ability to control behavior under service conditions. Although prestressed concrete construction involves essentially the same consideration and practices as for all structures, a number of special points require emphasis or elaboration. The construction engineer is involved in design only to a limited extent. First, he muse be able to furnish advice to the architect and engineer on what can he done. Because of his specialized knowledge of techniques relating to prestressed concrete construction, he supplies a very needed service to the architectengineer. Second, the construction engineer may be made contractually responsible for the working drawings。然而，預(yù)應(yīng)力通過(guò)對(duì)建筑有破壞作用的裂縫等缺陷源的消除，而使結(jié)構(gòu)系統(tǒng)更加有效。例如鋼筋的放置及錨定細(xì)節(jié)的等。美國(guó)的“預(yù)應(yīng)力混凝土結(jié)構(gòu)”定期發(fā)布一些關(guān)于技術(shù)及應(yīng)用的雜志和手冊(cè)，同時(shí)還建立了將其傳播給建筑師、工程師以及施工人員的程序。鋼筋束和加筋肋應(yīng)給出全部尺寸，而不適應(yīng)點(diǎn)線表示這樣有利于隊(duì)混凝土構(gòu)件進(jìn)行放置和固結(jié)。在全截面上，必須保證振子的通過(guò)。因此，作者建議采用較結(jié)實(shí)的管道材料，或者重新布置管道。這取決于管道的尺寸和所用的材料，因此應(yīng)該做出對(duì)控制 截面進(jìn)行布置的全比例草圖。 近 來(lái)有實(shí)驗(yàn)表明，采用較小的間距比增加尺寸更有效。如果預(yù)應(yīng)力重心跡線是拋物線形的，為了預(yù)拉就需要一種弦近似，同時(shí)適當(dāng)定位支撐點(diǎn)。因此他會(huì)關(guān)注承載和連接細(xì)節(jié)、撓度、蠕變、收縮、熱運(yùn)動(dòng)及耐久性保證等，并向設(shè)計(jì)工程師提供相應(yīng)的建議。 施工 工程師在設(shè)計(jì)中參與的工作是有限的。在 預(yù)應(yīng)力混凝土為一棟建筑物的總體結(jié)合提供了方便。 Architectural treatment of surfaces。 Durability。 that is, the layout of tendons, anchorage details, etc. It is particularly important that he gives careful attention to the mild steel and concrete details to ensure these are patible with his presressing details. Third, the construction engineer is concerned with temporary stresses, stresses at release, stresses in picking, handling and erection, and temporary condition prior to final pletion of the structure, such as the need of propping for a posite pour. Fourth, although the responsibility for design rests with the design engineer, nevertheless the construction engineer is also vitally concerned that the structure be successful form the point of view of structural integrity and service behavior. Therefo
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