- 摘 要
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孟履祥
（中國建筑科學研究院 北京 100013)）[提要] 介紹了預應力混凝土結構設計分析程序PFA的功能特點及研制過程中對若干技術問題的處理。如計入預應力軸向變形的影響，則適于計算機分析的預應力錨固損失及摩擦損失計算、預應力筋用量估算及優(yōu)化、抗震設計計算考慮、施工階段驗算等。
[關鍵詞] 軸向變形 預應力 等效荷載 損失 施工 抗裂驗算The functions, features and some related problems of the software PFA (design and analysis program of prestressed concrete structure) are presented. These problems include the influence of prestressing axial deformation, the calculation of anchoring and frictional loss which is suitable for the analysis by computer, the estimation and optimization of the quantity of prestress tendons needed, the checking calculation of crack resistance in construction and the consideration for seismic design and calculation.
Keywords: axial deformation; prestress equivalent loads; loss of prestress; checking calculation; crack resistance; construction
