鋼框架中鋼梁高強螺栓拼接摩擦耗能的試驗研究
李啟才，劉剛，胡安吉，朱道洪
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(蘇州科技學院土木工程學院，蘇州 215011)［摘要］為了探索將鋼框架中的鋼梁高強度螺栓拼接節(jié)點按照摩擦耗能節(jié)點進行設計的可行性，進行了三個試件的循環(huán)加載試驗。所有試件的梁柱連接都采用焊縫連接，鋼梁拼接按照拼接中心處的實際受力設計，翼緣和腹板拼接全部采用10.9級高強螺栓摩擦型連接，螺栓孔采用長圓孔。試驗結(jié)果表明：三個試件都能夠?qū)崿F(xiàn)拼接中心的摩擦耗能作用，而且梁柱連接焊縫不會提前破壞；所有試件都表現(xiàn)出了良好的耗能性能；但試驗也發(fā)現(xiàn)了一些值得注意的問題，如在循環(huán)加載作用下，拼接節(jié)點的承載能力和耗能能力下降較多，長圓孔的開孔長度對節(jié)點的轉(zhuǎn)動能力和耗能能力影響較大等。［關鍵詞］鋼梁拼接；摩擦耗能；高強螺栓；試驗研究中圖分類號：TU391，TU317-2文獻標識碼：A文章編號：1002-848X(2011)05-0078-04Experimental study on frictional energy-dissipation behavior of bolted steel beam splicing in rigid frameLi Qicai, Liu Gang, Hu Anji, Zhu Daohong(College of Civil Engineering, University of Science & Technology of Suzhou, Suzhou 215011, China)Abstract:In order to investigate the possibility of designing steel beam splicing connection in rigid frame as frictional energy-dissipation joint, tests of three such specimens were carried out. All specimens are made of grade 10.9 high-strength bolts, both flanges and web are bolt-spliced. Bolt holes are all of slotted holes. Results show that the energy-dissipation mechanism can be formed without pre-damages at beam-to-column welded connection if the splice joint is designed according to real inner force at beam splice center. All specimens behaved very well. Some defaults were also found during test, such as the load-carrying capacity and energy-dissipation capacity of splice joint reduce dramatically with cyclic loading, and the joint rotation capacity and energy-dissipation capacity are also greatly affected by the length of slotted bolt holes.Keywords:steel beam splicing; frictional energy-dissipation; high-strength bolts; experimental test*國家自然科學基金資助項目（59978041），江蘇省研究生培養(yǎng)創(chuàng)新工程資助項目(cx08s013z)，建設部研究開發(fā)項目（2007-K2-12）。作者簡介：李啟才，博士，副教授，Email:ustsgjg@163.com。參考文獻［1］GARRELTS J M, MADSEN I E. An investigation of plate girder web splices［J］. Transactions of ASCE, 1942， (107)：1303-1320.［2］KULAK G L, GREEN D L. Design of connections in web-flange beam or girder splices［J］. Engineering Journal, AISC, 1990，16(2)：41-48.［3］SHEIKH\|IBRAHIM F I, FRANK K H. The ultimate strength of symmetric beam bolted splices\[J\]. Engineering Journal, AISC, 1998,22(3)：106-118.［4］ASTANEH-Asl A. Seismic design of steel column-tree moment-resisting frames［M］. Steel Tips, Structural Steel Educational Council, Moraga, CA, 1997.［5］KURT MICHAEL MCMULLIN, ABOLHASSAN ASTANEH\|ASL. Steel semirigid column\|tree moment resisting frameseismic behavior［J］. Journal of Structural Engineering, 2003,129(9)：1243-1249.［6］李啟才，蘇明周，顧強，等. 帶懸臂梁段拼接的梁柱連接循環(huán)荷載試驗研究［J］. 建筑結(jié)構(gòu)學報，2003，24(4)：54-59.［7］周云.摩擦耗能減震結(jié)構(gòu)設計［M］.武漢：武漢理工大學出版社，2006:14-23.［8］TZONG SHOUH YANG. Experimental and analytical studies of steel connections and energy dissipaters［D］. University of California at Berkeley, 1995.［9］DOUGLAS WAY, EUGENE LOH. Friction-damped moment frames［C］//11th World Conference on Earthquake Engineering, 1996.［10］CHENG CHIH CHEN, CHUN CHOU LIN, CHIEH HSIANG, et al. Ductile moment connections used in steel column-tree moment-resisting frames［J］. Journal of Constructional Steel Research, 2006,(62) ：793\|801.
