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     吳耀輝
    （東南大學(xué)土木工程學(xué)院  南京 210096）

[提要]  通過(guò)對(duì)加固改造中舊柱新梁節(jié)點(diǎn)設(shè)計(jì)方案的詳細(xì)討論，推薦了新增牛腿這種簡(jiǎn)單可靠的方案。在新增牛腿的設(shè)計(jì)時(shí)，提出了應(yīng)同時(shí)按桁架機(jī)理和剪摩擦機(jī)理進(jìn)行牛腿的配筋計(jì)算。最后給出了牛腿的配筋形式以及牛腿和粱之間的連接構(gòu)造。
[關(guān)鍵詞]  節(jié)點(diǎn)  牛腿  桁架機(jī)理  剪摩擦機(jī)理

The design scheme of the corbel between the old column and the new beam in the strengthening projects is discussed in detail, and a simple and reliable scheme that uses the bracket is recommended. In the design of the bracket, both the truss mechanism and the shear friction mechanism should be used to calculate the reinforcement of the bracket simultaneously. Finally the reinforcement forms of the bracket and the connecting construction between the bracket and the beam are proposed.
Keywords: corbel; bracket; truss mechanism; shear friction mechanism