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張俊兵1，  張良平1，  鐘玉柏1，  馬臣杰2

（1深圳華森建筑與工程設(shè)計(jì)顧問有限公司，深圳518054；2中建國際（深圳）設(shè)計(jì)顧問有限公司，深圳518000)

 

[摘要] 利用LS-DYNA，考慮結(jié)構(gòu)的材料及幾何非線性，對(duì)深大地鐵上蓋超高層建筑3個(gè)典型節(jié)點(diǎn)進(jìn)行有限元分析，考察節(jié)點(diǎn)在標(biāo)準(zhǔn)組合及大震組合下的應(yīng)力分布狀態(tài)，得到節(jié)點(diǎn)區(qū)域應(yīng)變分布。數(shù)值分析結(jié)果表明，標(biāo)準(zhǔn)組合下節(jié)點(diǎn)區(qū)域型鋼處于彈性階段，節(jié)點(diǎn)區(qū)混凝土很小部分區(qū)域達(dá)到強(qiáng)度極限，節(jié)點(diǎn)具有良好的工作性能。大震組合下，節(jié)點(diǎn)核心區(qū)混凝土內(nèi)型鋼翼緣部分區(qū)域屈服進(jìn)入塑性階段，雖然混凝土部分應(yīng)力增加不少，但3個(gè)節(jié)點(diǎn)仍能繼續(xù)工作。

[關(guān)鍵詞] 非線性；有限元；高層建筑；鋼管混凝土；節(jié)點(diǎn)

中圖分類號(hào)：TU398.7    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2012) S2-0433-06

 

Zhang Junbing1,  Zhang Liangping1,  Zhong Yubai1,  Ma Chenjie2

(1 Huasen Architecture & Engineering Design Consultants Ltd., Shenzhen 518054, China; 2 Construction Design International Co.  Ltd.( Shenzhen Branch), Shenzhen 518000, China)

 

Abstract: Three typical joints between concrete filled steel tubular beam and column of a lugh rise building located on Shenzhen University Railway Station analyzed by LS-DYNA were presented. The material nonlinearity and geometrical nonlinearity has been considered.The Working performance of joints under standard forming of load and medium earthquake were simulated and the distributions of stress of joints were present. The numerical results show that the steel in core concrete of joints was mostly in elastic stage and few parts of concrete could be found to reach their ultimate strength. It has been show that the steel and concrete ofjoints have good performances at this stage. Part of the flanges of steel I beam has been yield under medium earthquake. Although the stress of concrete has increased greatly, the selected three joints can still work at this stage.

Keywords: nonlinearity; finite element method; high rise building; concrete filled steel tubular beam and column; joint