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孫大勇
(中國(guó)建筑設(shè)計(jì)研究院上海分院，上海200120)

[摘要] 某在建展廳采用鋼筋混凝土框架結(jié)構(gòu)，由于使用功能發(fā)生變化，部分樓面需降底Im。這些改變涉及混凝土梁板拆除、梁柱加固及梁上柱接長(zhǎng)落地等。根據(jù)加吲改造的實(shí)際情況及要求分別采用了外包鋼結(jié)構(gòu)法加固柱，粘貼碳纖維布加崮梁。同時(shí)還對(duì)鋼梁與已有混凝土柱剛接節(jié)點(diǎn)進(jìn)行有限元計(jì)算和分析，以保證地震作用下節(jié)點(diǎn)的安全性。
[關(guān)鍵詞] 改建加固；鋼梁與混凝土剛接節(jié)點(diǎn)；梁上立柱接長(zhǎng)落地

    Introduction of renovation and strengthen of a constructed project
    Sun Dayong
    ( China Architecture Design & Research Group Shanghai Branch, Shanghai 200120, China)

Abstract: The partial floor of one exhibition hall with RC frame structure needs to be lowered by 1m, due to the change of function. These changes involved not only removal of concrete slab, but also reinforcement of the beam, column and the spreading to the ground of column upon beam. According to the actual situation and requirements of renovation, the column was strengthened with the outsourcing of steel, and the beam was strengthened with CFRP adhesive sheets. In the mean time, finite element calculation and analysis ofthe steel girder-existing concrete column rigid joints were conducted to ensure the safety of the joint under earthquakes.
Keywords: renovation; strengthen; steel girder-concrete rigid joint; the column upon beam spreading to the ground