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     李爽夫  顧南勇  李慶福
    （山西省建筑設計研究院  太原 030013）

[提要]  結(jié)合工程實例介紹了加腋預應力鋼筋砼框架梁的設計方法，即通過加高支座處截面來增加其抗彎和抗裂能力。同時分析了加腋預應力梁的受力特點，給出了梁截面抗彎剛度為變數(shù)，形心線為非直線的計算處理方法。
[關(guān)鍵詞]  加腋 預應力  框架梁  加腋區(qū)  等效 無粘結(jié)筋

On basis of an engineering project, prestressed R.C.frame beam with haunches is introduced which can improve the flexural capacity and crack resisrance by increasing the height of support section, this kind of beam's feature is analysed and the calculation method is given to treat the condition in which the bending regidity is variable and the section centroid is not in one line.
Keywords: frame beam; haunch; prestress; haunched area; equivalent; unbonded bar