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(1 北京市住宅產(chǎn)業(yè)化集團(tuán)股份有限公司,北京 100071； 2 北京建誼投資發(fā)展 (集團(tuán)) 有限公司，北京 100071； 3 中國建筑科學(xué)研究院有限公司,北京 100020)

摘要: 為研究 H 型鋼梁柱的弱軸連接節(jié)點(diǎn)的性能，對(duì)有蓋板的 H 型鋼梁柱弱軸連接節(jié)點(diǎn)以及梁柱是否偏心節(jié)點(diǎn)進(jìn)行了試驗(yàn)研究和有限元校核模擬，并對(duì) 8 組蓋板參數(shù)不同的梁柱連接節(jié)點(diǎn)的受力性能進(jìn)行有限元分析。研究結(jié)果表明:無偏心和偏心弱軸連接節(jié)點(diǎn)的試驗(yàn)現(xiàn)象分別為梁翼緣至腹板的開裂和懸臂梁段的平面外失穩(wěn)；有限元的分析結(jié)果與試驗(yàn)結(jié)果吻合較好，能夠正確反映節(jié)點(diǎn)的受力情況；蓋板的高度能夠一定程度地加強(qiáng)節(jié)點(diǎn)的初始轉(zhuǎn)動(dòng)剛度；蓋板能夠明顯改善鋼柱節(jié)點(diǎn)域的局部應(yīng)力集中，加強(qiáng)節(jié)點(diǎn)的剛度，并提升柱的屈服承載力；偏心弱軸連接節(jié)點(diǎn)在有、無蓋板的情況下可分別視作剛性連接節(jié)點(diǎn)和半剛性連接節(jié)點(diǎn)；蓋板的設(shè)置能夠顯著地提升節(jié)點(diǎn)的轉(zhuǎn)動(dòng)剛度和耗能能力。

關(guān)鍵詞: H 型鋼梁柱節(jié)點(diǎn)； 弱軸加蓋板； 弱軸連接節(jié)點(diǎn)； 偏心節(jié)點(diǎn)； 受力性能

中圖分類號(hào):TU391 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)19-0098-07

DOI:10.19701 / j.jzjg.YG220784

Test and finite element analysis on H-shaped steel beam-to-columnconnection with cover plate in the weak axis

SU Lei1,CAO Zhiliang2,LIN Haipeng3,LIU Bufang1

(1 Beijing Building Industrialization Group Co. ,Ltd. ,Beijing 100071,China； 2 Beijing Jianyi Investment Development(Group) Co. ,Ltd. ,Beijing 100071,China； 3 China Academy of Building Research,Beijing 100020,China)

Abstract: In order to explore the mechanic performance of H-shaped steel beam-to-column connection in the weak axis,theeccentricity and non-eccentricity of H-shaped steel beam-to-column connection with cover plate in the weak axis werestudied by testing and numericial simulation,in which case the finite element analysis in 8 gourps of the beam-to-columnconnections with different parameters at cover plate was conducted for mechanical performance research. The results showthat: the experimental phenomena of the eccentricity and non-eccentricity connection were the cracks from the flange to theweb and the out-of-plane instability of the cantilever beam segment； the finite element analysis results are in good agreementwith the experimental results,which can correctly reflect the mechanical performance of connections； the height of the coverplate can strengthen the initial rotational stiffness of the connection to a small extent； the cover plate can significantlyalleviate stress concentration problem in panel zone,enhance the stiffness of the connection and the yield capacity of thecolumn； the eccentric connection in weak axis with and without cover plate shall be regarded as rigid connection andsemi-rigid connection respectively； the installation of cover plate can obviously improve rotational stiffness and the energydissipation capacity.

Keywords:H-shaped steel beam-to-column connection； the cover plate in weak axis； connection node in weak axis；eccentricity node； mechanical performance

第一作者:蘇磊，博士，高級(jí)工程師，主要從事鋼結(jié)構(gòu)領(lǐng)域的設(shè)計(jì)工作，Email:sageyou@ 163. com。

[引用本文]蘇磊，曹志亮，林海鵬，等. 帶有蓋板的 H 型鋼梁柱弱軸連接節(jié)點(diǎn)試驗(yàn)及有限元分析[ J]. 建筑結(jié)構(gòu)，2022，52(19):98-104. SU Lei，CAO Zhiliang，LIN Haipeng，et al. Test and finite element analysis on H-shaped steelbeam-to-column connection with cover plate in the weak axis[J]. Building Structure，2022，52(19):98-104.