5047

279 دكتري

دكتري

سازه

اصفهان: دانشگاه صنعتي اصفهان، دانشكده عمران

1388

چهارده، 227ص: مصور، جدول، نمودار

ص.ع.به: فارسي و انگليسي

محمد مهدي سعادت پور، مجتبي ازهري

2/12/88

مجتبي محزون، حميد محرمي، بيژن برومند

مهندسي عمران

ID279 دكتري

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

Theoretical Investigation on Unstiffened Thin Steel Plate Shear Wall Part I Principal Stress Behavior of the Tension Field Parham Memarzadeh Parham memarzadeh@yahoo com 15th December 2009 Department of Civil EngineeringIsfahan University of Technology Isfahan 84156 83111 Iran1st Supervisor M M Saadatpour mmehdi@cc iut ac ir2nd Supervisor M Azhari mazhari@cc iut ac irDepartment Graduate Program CoordinatorAbstractWhen the buckling occurs in the infill plate of steel plate shear wall SPSW a diagonal tensionfield is formed through the plate This paper investigates the influence of torsional and out of plane flexural rigidities of boundary members on the buckling coefficient as well as on thedistribution and orientation patterns of principal stresses associated with the buckling modes The linear buckling equations in the sense of von Karman have been solved in conjunction withvarious boundary conditions by using the Ritz method Keywordssteel shear wall shear buckling anchoring tension field thin plate Ritz method IntroductionThe steel plate shear wall is a lateral load resisting system consisting of an infill plate locatedwithin a frame The plate can either be welded or bolted to the frame Many researchers havebeen interested in studying the SPSWs While performing experimental investigations on the thinaluminum shear panels of an aircraft Wagner found out that in thin webbed structures with stiffboundary members a diagonal tension field would be formed when buckling occurs ThenWagner 1 developed the pure tension theory stating that the formation of the tension field is theprimary mechanism for shear resistant This theory does not explain about the extent uniformityor non uniformity and also the angle of inclination of the tension field and the affecting factors An analytical model termed the strip model was developed by Thorburn et al 2 to simulatethe tension field behavior wherein the infill plate is modeled as a series of tension only strips atthe same angle of inclination as the tension field They derived the angle of inclination for thestrips from the principle of Least Work as a function of axial stiffness of boundary members TheCanadian Steel Design Standard 3 suggests the application of the strip model as a design toolfor steel plate shear wall CAN CSA 516 01 However researchers are still searching for anincrease in the precision of prediction of the overall behavior of the shear wall MethodologyThe surrounding members are modeled by the springs To define logical parameters for theamounts of torsional and out of plane flexural rigidities of surrounding members stiffnessparameters and are introduced as follows

محمد مهدي سعادت پور، مجتبي ازهري