详情

原文传递 Bond Behavior of Concrete-Filled Steel Tubes at Elevated Temperatures

题名：	Bond Behavior of Concrete-Filled Steel Tubes at Elevated Temperatures
其他题名：	Aly,T.,Elchalakani,M.,Thayalan,P.,and Patnaikuni,I.(2010)."Incremental collapse threshold for pushout resistance of circular concrete filled steel tubular columns."J.Constr.Steel Res.,66(1),11–18.Bhadeshia,H.,and Honeycombe,R.(2006).Steels,microstructure and properties,3rd Ed.,Butterworth-Heinemann,Oxford,U.K.CEN(European Committee for Standardization).(2004)."Design of composite steel and concrete structures.1–1:General rules and rules for buildings."EN 1994-1-1,Eurocode 4,Brussels,Belgium.CEN(European Committee for Standardization).(2005)."Design of composite steel and concrete structures.1–2:General rules-structural fire design."EN 1994-1-2,Eurocode 4,Brussels,Belgium.Chang,X.,Huang,C.K.,Jiang,D.C.,and Song,Y.C.(2009)."Push-out test of pre-stressing concrete filled circular steel tube columns by means of expansive cement."Constr.Build.Mater.,23(1),491–497.Culfik,M.S.,and Ozturan,T.(2010)."Mechanical properties of normal and high strength concretes subjected to high temperatures and using image analysis to detect bond deteriorations."Constr.Build.Mater.,24(8),1486–1493.Ding,J.,andWang,Y.C.(2008)."Realistic modelling of thermal and structural behaviour of unprotected concrete filled tubular columns in fire."J.Constr.Steel Res.,64(10),1086–1102.Gardner,L.(2005)."The use of stainless steel in structures."Prog.Struct.Eng.Mater.,7(2),45–55.Jaspart,J.P.(1991)."Study of the semi-rigidity of beam-to-column joints and its influence on the resistance and stability of steel buildings."Ph.D.thesis,Liège Univ.,Liège,Belgium.Petrus,C.,Abdul Hamid,H.,Ibrahim,A.,and Nyuin,J.D.(2011)."Bond strength in concrete filled built-up steel tube columns with tab stiffeners."Can.J.Civil Eng.,38(6),627–637.Qu,X.S.,Chen,Z.H.,Nethercot,D.A.,Gardner,L.,and Theofanous,M.(2013)."Load-reversed push-out tests on rectangular CFST columns."J.Constr.Steel Res.,81(3),35–43.Roeder,C.W.,Cameron,B.,and Brown,C.B.(1999)."Composite action in concrete filled tubes."J.Struct.Eng.,10.1061/(ASCE)0733-9445(1999)125:5(477),477–484.Shakir-Khalil,H.(1993)."Pushout strength of concrete-filled steel hollow sections."Struct.Eng.,71(13),230–243.Song,T.Y.,Han,L.H.,and Yu,H.X.(2010)."Concrete filled steel tube stub columns under combined temperature and loading."J.Constr.Steel Res.,66(3),369–384.Standards Australia.(2004)."Bridge design.Part 6:Steel and composite construction."AS5100.6,Sydney,Australia.Tao,Z.,Han,L.H.,Uy,B.,and Chen,X.(2011)."Post-fire bond between the steel tube and concrete in concrete-filled steel tubular columns."J.Constr.Steel Res.,67(3),484–496.Tao,Z.,Song,T.Y.,Uy,B.,and Han,L.H.(2016)."Bond behavior in concrete-filled steel tubes."J.Constr.Steel Res.,120(4),81–93.Tao,Z.,Wang,X.Q.,and Uy,B.(2012)."Stress-strain curves of structural and reinforcing steels after exposure to elevated temperatures."J.Mater.Civil Eng.,10.1061/(ASCE)MT.1943-5533.0000676,1306–1316.Virdi,K.S.,and Dowling,P.J.(1980)."Bond strength in concrete filled steel tubes."IABSE Proc.,P-33/80,International Association for Bridge and Structural Engineering,Zurich,Switzerland,125–139.
正文语种：	英文
作者：	Tian-Yi Song
关键词：	Concrete-filled steel tubes;Bond strength;Fire;Stainless steel;Push-out;Metal and composite structures
摘要：	Extensive studies have been conducted into the bond behavior in concrete-filled steel tubes (CFST) at ambient temperature. However, the bond behavior of CFST columns subjected to fire is still unclear. A total of 24 push-out tests were conducted to investigate the bond strength of CFST columns at elevated temperatures, 12 reference specimens at ambient temperature, and 16 postfire specimens were also tested for comparison. The main test parameters explored in this test program include: steel type (carbon and stainless steels), concrete type (normal and expansive concretes), cross-section type (circular and square sections), interface type (normal interface, interface with shear studs, and interface with an internal ring), temperature level (20, 200, 400, 600, and 800°C), hold time period of heating (45, 90, 135, and 180 min), and applied axial load during heating. The experimental results indicated that the bond of specimens with normal interface could be completely broken in fire. However, welding internal rings or shear studs onto the inner surface of the steel tube can effectively retain a portion of the bond strength in fire.
出版年：	2017
论文唯一标识：	P-26Y2017V143N11003
英文栏目名称：	TECHNICAL PAPAERS
doi：	10.1061/(ASCE)ST.1943-541X.0001890
期刊名称：	Journal of Structural Engineering
拼音刊名(出版物代码)：	P-26
卷：	143
期：	11
页码：	17-28