Analysis Of The Seismic Behaviour Of Subassemblage And Prestressed Concrete Frames Beam-Column Joints Under Reversed Cyclic Lateral Loads

Subassemblage and Prestressed concrete frames are assembled by precast prestressed beams and columns with tendons in the joints of the frames.These beams and columns are hoisted in site and the tendons are passed through the moire pipes.So prestressing force are brought to the joints of the frame.These tendons also can assume the moments at the end of the beams in ordinary condition. By way of these tendons,precest beams and columns can be assembled conveniently,and the joints and frame are monolithic and continuous.Consequently,compared with common reinforced concrete frams,this kind of frame systems possess higher reliability and solved the problems in the process of assembling Prestressed Concrete frames.Also it forms the framework of Subassemblage and Prestressed Concrete Frames,and explores a new way for industrial production of prestressed structures.Tow speciments of prestressed fabricated beam-column subassembly were tested under reversed cyclic loading. Experimental studies were carried out to investigate the strain distribution, failure mechanism and load-bearing capacity on the beam-column connections, as well as ductility, hysteresis curves energy dissipation, displacement restoring capacity of full PC speciments.