外文翻譯——預應力混凝土建筑-建筑結構-wenkub.com
2025-05-07 05:26 本頁面
【正文】 因此，作者建議采用較結實的管道材料，或者重新布置管道。這取決于管道的尺寸和所用的材料，因此應該做出對控制 截面進行布置的全比例草圖。在全截面上，必須保證振子的通過。 近 來有實驗表明，采用較小的間距比增加尺寸更有效。鋼筋束和加筋肋應給出全部尺寸，而不適應點線表示這樣有利于隊混凝土構件進行放置和固結。如果預應力重心跡線是拋物線形的，為了預拉就需要一種弦近似，同時適當定位支撐點。美國的“預應力混凝土結構”定期發(fā)布一些關于技術及應用的雜志和手冊，同時還建立了將其傳播給建筑師、工程師以及施工人員的程序。因此他會關注承載和連接細節(jié)、撓度、蠕變、收縮、熱運動及耐久性保證等，并向設計工程師提供相應的建議。例如鋼筋的放置及錨定細節(jié)的等。 施工 工程師在設計中參與的工作是有限的。然而，預應力通過對建筑有破壞作用的裂縫等缺陷源的消除，而使結構系統(tǒng)更加有效。在 預應力混凝土為一棟建筑物的總體結合提供了方便。 Availability, through use of local materials and labor to a high degree. Most of the above are also properties of conventionally reinforced concrete. Presrressing, however, makes the structural system more effective by enabling elimination of the technical of difficulty, ., cracks that spoil the architectural treatment. Prestressing greatly enhance the structure efficiency and economy permitting longer spans and thinner elements. Above all, it gives to the architectengineer 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。 Architectural treatment of surfaces。 Structure rigidity。 Durability。 Sound insulation。 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.
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