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    滕  軍，  曹冬雪，  李祚華，  呂海霞
    （哈爾濱工業(yè)大學(xué)深圳研究生院，深圳 518055）

[摘要] 針對(duì)汶川震害中鋼筋混凝土框架結(jié)構(gòu)較多形成柱鉸破壞的現(xiàn)象，通過(guò)對(duì)簡(jiǎn)化模型和精細(xì)化模型在靜力、動(dòng)力荷載作用下所形成破壞機(jī)制的對(duì)比分析，得到二者在屈服模式上的不同，簡(jiǎn)化模型可以實(shí)現(xiàn)“強(qiáng)柱弱梁”破壞模式，而精細(xì)化模型無(wú)法實(shí)現(xiàn)“強(qiáng)柱弱梁”的破壞模式。通過(guò)對(duì)有無(wú)樓板框架結(jié)構(gòu)以及彈性樓板結(jié)構(gòu)和彈塑性樓板結(jié)構(gòu)的對(duì)比分析，進(jìn)一步研究了現(xiàn)澆樓板對(duì)“強(qiáng)柱弱梁”破壞模式形成的影響。分析結(jié)果表明，在結(jié)構(gòu)整體地震反應(yīng)分析中，宜建立精細(xì)化模型來(lái)充分考慮現(xiàn)澆樓板的空間作用，進(jìn)而能夠真實(shí)地反映結(jié)構(gòu)的地震破壞模式。
[關(guān)鍵詞] 框架結(jié)構(gòu)；強(qiáng)柱弱梁；現(xiàn)澆樓板；汶川地震
中圖分類(lèi)號(hào)：TU398.7    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：1002-848X(2011) Sl-0285-06

Disscussion on frame structure strong column weak beams pattern formation of earthquake damage
    Teng Jun, Cao Dongxue, Li Zuohua, Lu Haixia
    (  Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, China)

Abstract: In view of many reinforced concrete frame structures are destroyed first column plastic hinge then beam in eanhquake at present, the paper gets two different pattems in yield through the analysis of the difference between the simple model and refinement model in failure mechanism under load:  simplified model can implement' strong column weak beam9failure mode, but the fine model. In addition, based on comparison of slab frame structure and without, and then structure with elastic floor and elastic-plastic floor, this paper discusses the the role of cast-in-situ floor in formation of' strong column weak beam7failure mode. The different result reveals the essence that simplified model tends to unsafe on the problem considering' strong column weak beam' in the design.
Keywords: strong column weak beam; concrete frame; cast-in-situ floor; Wenchuan earthquake