884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 廣西大學(xué)土木工程學(xué)院， 南寧 530004； 2 廣西防災(zāi)減災(zāi)與工程安全重點(diǎn)實(shí)驗(yàn)室， 南寧 530004）

［摘要］梁柱T形鋼連接節(jié)點(diǎn)通過螺栓和T形鋼把鋼框架中的梁柱連接在一起，構(gòu)造簡單、受力明確、抗震性能優(yōu)越，是一種剛勁的半剛性連接方式，但普通梁柱T形鋼連接節(jié)點(diǎn)應(yīng)用于高層建筑中仍存在剛度、強(qiáng)度不足的問題。通過試驗(yàn)和有限元數(shù)值模擬研究了普通梁柱T形鋼連接節(jié)點(diǎn)的力學(xué)性能，從該節(jié)點(diǎn)的最薄弱部位著手，探討了加強(qiáng)上部T形鋼構(gòu)造的六種方案：腹板增設(shè)一排抗剪螺栓、腹板與翼緣間設(shè)加勁肋、增加翼緣及腹板寬度、增加翼緣及腹板寬度同時增加翼緣橫向螺栓數(shù)量、梁腹板與柱之間增設(shè)單腹板和雙腹板連接角鋼。數(shù)值分析結(jié)果表明，以上六種方案均能直接或間接地提高節(jié)點(diǎn)的彈性極限、初始剛度和極限承載力，但對最終的破壞模式影響較小。最后針對T形鋼連接節(jié)點(diǎn)的構(gòu)造加強(qiáng)方式提出了一些建議。

［關(guān)鍵詞］梁柱T形鋼連接節(jié)點(diǎn)； 極限承載力； 半剛性連接； 有限元模擬； 節(jié)點(diǎn)加強(qiáng)

中圖分類號：TU391，TU392.1    文獻(xiàn)標(biāo)識碼：A    文章編號：1002-848X(2015)03-0053-06

Study on mechanical property and strengthening method  of steel beamtocolumn Tstub connections

Li Xiumei1,2, Zhang Keshi1,2, Wang Tao1, Huang Haitang1, Zheng Xiaowei1

 (1 Institute of Civil Engineering, Guangxi University, Nanning 530004, China;

2 Guangxi Key Laboratory of Disaster Prevention and Engineering Safety， Nanning 530004， China）

Abstract:Steel beamtocolumn Tstub connections, which connects steel beams and columns in steel frame together through bolts and Tstub, is a kind of semirigid strong connection form with simple details, definite mechanical ways and well seismic performance. But the ordinary steel beamtocolumn Tstub connections used in highrise buildings still have problems of insufficient stiffness and strength. The mechanical properties of the steel beamtocolumn Tstub connections were studied through the test and finite element numerical simulation. The weakest part of the connection was focused and six schemes to strengthen upper Tstub details were discussed, including a row of shear bolts additionally provided in the web, stiffener arranged between the flange and web, increase of the width of the flange and web, increase of transverse bolts of the flange and web, and additionally provided connected angle steel on one side or both sides of the beam web to connect the column. The numerical analysis results show that the above six schemes can directly or indirectly improve the elastic limit, initial stiffness and ultimate bearing capacity of the connection, but has little effect on the final failure mode. Finally some suggestions on structural strengthening method of T\|stub connections were given.

Keywords:steel beamtocolumn Tstub connection; ultimate bearing capacity; semirigid connection; finite element numerical simulation; connection strengthening

*廣西理工科學(xué)實(shí)驗(yàn)中心重點(diǎn)項(xiàng)目（LGZX201101）,廣西教育廳項(xiàng)目（201012M5009）。

作者簡介：李秀梅，博士，教授，Email: lixiumei_gx@126.com。

參考文獻(xiàn)

［1］POPOV E P,  YANG T S,  CHANG S P. Design of steel MRF connections before and after 1994 Northridge earthquake［J］. Engineering Structures, 1998, 20(12): 10301038.

［2］Load and resistance factor design specification for structural steel buildings［S］. Chicago: American Institute of Steel Construction Inc., 1999.

［3］舒興平,胡習(xí)兵. T型鋼半剛性連接節(jié)點(diǎn)的承載力分析［J］. 鋼結(jié)構(gòu), 2005, 20(81): 3540.

［4］舒興平,胡習(xí)兵,熊嚁. 鋼框架梁柱T型鋼半剛性連接節(jié)點(diǎn)的性能研究［J］. 建筑結(jié)構(gòu), 2006, 36(8): 69.

［5］戴紹斌,黃俊,朱健. 鋼框架T型鋼連接節(jié)點(diǎn)的受力性能研究［J］. 工業(yè)建筑, 2005, 35(9): 9093.

［6］TAKHIROV S M,  POPOV E P. Bolted large seismic beamtocolumn connections part 2: numerical nonlinear analysis［J］. Engineering Structures, 2002, 24(12): 15351545.

［7］VAHID SABERI, MOHSEN GERAMI, ALI KHEYRODDIN. Comparison of bolted end plate and Tstub connection sensitivity to component thickness［J］. Journal of Constructional Steel Research, 2014,98(7): 134145.

［8］SWANSON J A,  KOKAN D S,  LEON R T. Advanced finite element modeling of bolted Tstub connection components［J］. Journal of Constructional Steel Research, 2002, 58(58): 10151031.

［9］李鳳霞,布欣,王新武.剖分T型鋼梁柱連接滯回性能研究［J］.建筑科學(xué), 2010,26（5）:2832.

［10］宋曉光, 申成軍, 郭兵.鋼框架梁柱T型鋼連接滯回性能的研究［J］.建筑鋼結(jié)構(gòu)進(jìn)展, 2008，10（4）：1825.

［11］JONG WAN HU. Mechanical modeling of bolted Tstub connections under cyclic loads part I: stiffness modeling［J］. Journal of Constructional Steel Research, 2011, 67(11): 17101718.

［12］黃海棠.T型鋼梁柱半剛性連接節(jié)點(diǎn)在靜載作用下的極限承載性能研究［D］. 南寧：廣西大學(xué)，2012.

［13］李澤森，李秀梅，鄭曉偉，等. T形鋼連接梁柱半剛性節(jié)點(diǎn)滯回性能試驗(yàn)研究與數(shù)值分析［J］. 建筑結(jié)構(gòu)學(xué)報, 2014, 35(7): 6168.