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(大連市建筑設(shè)計(jì)研究院有限公司，大連 116021)
［摘要］大連國(guó)際會(huì)議中心鋼平臺(tái)采用鋼桁架結(jié)構(gòu)，最大懸挑長(zhǎng)度達(dá)45m，跨度為20～60m。設(shè)計(jì)中桁架采用K形節(jié)點(diǎn)，在對(duì)節(jié)點(diǎn)的有限元驗(yàn)算分析中發(fā)現(xiàn)，部分節(jié)點(diǎn)不能滿足設(shè)計(jì)要求，采取了節(jié)點(diǎn)補(bǔ)強(qiáng)措施。為驗(yàn)算補(bǔ)強(qiáng)節(jié)點(diǎn)的有效性，設(shè)計(jì)制作了10個(gè)寬翼緣K形節(jié)點(diǎn)試件，對(duì)其進(jìn)行了低周反復(fù)荷載試驗(yàn)，測(cè)試了試件的承載力、破壞狀態(tài)、滯回性能和耗能能力等。通過(guò)試驗(yàn)和有限元分析可知，K形節(jié)點(diǎn)通過(guò)合理設(shè)計(jì)可達(dá)到設(shè)計(jì)要求。
［關(guān)鍵詞］K形節(jié)點(diǎn)；補(bǔ)強(qiáng)措施；低周反復(fù)荷載；承載力；破壞狀態(tài)
中圖分類號(hào)：TU391-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2012)02-0045-04
Experiment study on K joints of wide-flange steel truss
Wen Hailin, Jiang Bo, Cao Le, Liu Nan, Li Dongfang, Wang Lichang(Dalian-Architectural Design & Research Institute Co., Ltd., Dalian 116021，China)
Abstract:The steel truss, which span is 20~60m and the longest cantilever is 45m, is adopted in the platform of Dalian International Convention Center. The K joints are used in the steel truss. Through the-finite element analysis, it is found that, some joints can not meet design requirements, and reinforcement measures are used. To check the effectiveness of reinforcement joint, ten wide-flange steel K joints specimens were made. In the low reversed cyclic loading experiment, the bearing capacity, failure modes, hysteresis and ability of energy consumption were tested. According to the experiment and finite element analysis, K joints can meet design requirements through reasonable design.
Keywords:K joint; reinforcement measure; low reversed cyclic loading; bearing capacity; destroyed pattern
作者簡(jiǎn)介：溫海林，工程師，Email:wehailin801@163.com。
參考文獻(xiàn)
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