- 摘 要
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（1 同濟(jì)大學(xué)建筑工程系， 上海 200092； 2 上海通正鋁合金結(jié)構(gòu)工程技術(shù)有限公司， 上海 201103）
［摘要］鋁合金板式節(jié)點是典型的半剛性節(jié)點，其在網(wǎng)殼平面內(nèi)的抗彎剛度對網(wǎng)殼桿件的穩(wěn)定承載力影響很大。首先基于組件法的思想推導(dǎo)出了節(jié)點在各受力階段的平面內(nèi)彎曲剛度以及所對應(yīng)的臨界彎矩值，然后建立數(shù)值模型，對鋁合金板式節(jié)點的網(wǎng)殼平面內(nèi)抗彎剛度進(jìn)行模擬，最后在數(shù)值分析結(jié)果的基礎(chǔ)上，擬合得到了節(jié)點的彎曲剛度公式，并提出了平面內(nèi)抗彎剛度的四折線模型。彎曲剛度公式與數(shù)值分析結(jié)果吻合良好，表明公式具有較高精度。
［關(guān)鍵詞］鋁合金板式節(jié)點； 彎曲剛度； 四折線模型
中圖分類號：TU395文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)14-0034-06
Study on in-plane bending stiffness of aluminum alloy gusset joint
Guo Xiaonong1, Zhu Shaojun1, Wang Li1, Ouyang Yuanwen2
(1 Department of Structural Engineering, Tongji University, Shanghai 200092, China; 2 Shanghai Tongzheng Aluminium Structure Engineering & Technology Co., Ltd., Shanghai 201103, China)
Abstract:The aluminum alloy gusset (AAG) joint is a typical semi-rigid joint, whose in-plane bending stiffness largely influences the stability of the members of a shell. Firstly, the in-plane bending stiffness and the corresponding bending moment of each loading stage were derived based on the component method. Then numerical models were established to simulate the in-plane bending stiffness of the AAG joint. Finally, the fitting formulae were obtained based on the numerical results, and the four polyline model of in-plane bending stiffness was proposed. The results of the formulae fit well with the numerical results, which indicate that the four polyline model has high accuracy.
Keywords:aluminum alloy gusset joint; bending stiffness; four polyline model
*國家自然科學(xué)基金（50908168，51478335）。
作者簡介：郭小農(nóng)，博士，副教授，博士生導(dǎo)師，Email: guo-xiao-nong@#edu.cn。
