Study Of Seismic Performances On Prestressed Fabricated Pc Frame

Prestressed fabricated PC frames are assembled by precast prestessed 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 moirépipes. So prestressing force are brought to the joints of the frame. These tendons also can assume the moments at the end of the beam in ordinary condition. By way of these tendons, precest beam and columns can be assembled conveniently, and the joints and frame are monolithic and continuous. Consequently,this kind of frame systems possess higher reliability and solved the problems in the precess of assembling Concrete frames.A single-span three-storey prestressed fabricated PC frame was tested under low-cyclic reversed loading. The dissertation studied and analyzed the stress performance and deformability of the subassemblage and prestressed concrete frame under vertical load and horizontal seismic load. The crack distribution, failure pattern, hysteresis curve, skeleton curve and ductility of the frame were studied thoroughly. And using the finite element program Sap2000, the author carried out the Pushover analysis for the test frame. These researches showed that subassemblage and prestressed concrete frame had better seismic performance.