- 摘 要
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(中國建筑第八工程局有限公司， 上海 200135)
［摘要］為精準預(yù)測高強鋼端板連接節(jié)點在常溫、高溫及過火冷卻后的力學(xué)性能，基于組件法推導(dǎo)了高強鋼端板連接節(jié)點初始剛度計算方法。為驗證該方法的準確性，對比了采用該計算方法和現(xiàn)有計算方法計算得到的高強鋼端板連接節(jié)點常溫、高溫及過火冷卻后初始剛度的計算值和試驗值。研究結(jié)果表明，大部分節(jié)點初始剛度的試驗結(jié)果高于計算結(jié)果，但相較于歐洲規(guī)范EN 1993-1-8推薦方法的計算結(jié)果，本文提出的初始剛度計算方法可更準確地反映高強鋼端板連接節(jié)點在常溫、高溫及過火冷卻后的力學(xué)性能。
［關(guān)鍵詞］高強鋼；端板連接節(jié)點；高溫；過火冷卻；初始剛度
中圖分類號：TU391 文獻標識碼：A文章編號：1002-848X(2021)23-0090-05
Research on calculation method of initial stiffness of high-strength steel end-plate connection joints in fire and after fire
WU Nianduo, WAN Zhanjun, XU Nuo, HE Chao, WANG Cong
(China Construction Eighth Engineering Division Co., Ltd., Shanghai 200135， China)
Abstract: In order to accurately predict the mechanical properties of high-strength steel (HSS) end-plate connection joints at room temperature, at high temperature and after fire cooling, the calculation method for the initial stiffness of HSS end-plate connection joints was derived based on the component method. In order to verify the accuracy of this method, the calculated values of initial stiffness of HSS end-plate connection joints obtained by this calculation method and the existing calculation methods at room temperature, at high temperature and after fire cooling were compared with the experimental values. The research results show that the experimental results of the initial stiffness of most joints are higher than the calculated results, but compared with the results recommended by the European Code EN 1993-1-8, the proposed initial stiffness calculation method can more accurately predict the mechanical preformance of HSS end-plate connection joints at room temperature, at high temperature and after fire cooling.
Keywords:high-strength steel； end-plate connection joint； high temperature； fire cooling； initial stiffness
*國家重點研發(fā)計劃重點專項資助項目（2017YFB0304701），國家自然科學(xué)基金（51408150），中央高?；究蒲袠I(yè)務(wù)費專項資金（2014KJ044），財政部2013年施工新技術(shù)研究與開發(fā)項目（財企（2013）235號）。
作者簡介：武念鐸，博士，工程師，Email：331213494@qq.com。
