DESIGN PROCEDURE AND SEISMIC PERFORMANCE OF THE PARTIALLYUNBONDED PRESTRESSED PRECAST CONCRETE FRAME
The partially unbonded prestressed precast conctrete frame studied in the paper is a relatively new kind of precast frame, in which precast beams and columns are connected by partially unbonded post-tensioned tendons. In this paper, the basic concept and main advantages of this new kind of frame are introduced first. Owing to the particular structure form, design of this precast frame is quite different from other structures. Therefore, several key points in the seismic design of the frame are discussed briefly. In the following, to evaluate the seismic performance of this kind of precast frame, a three-storey, two-span, 2-D precast frame was designed, and then numerical analysis was conducted utilizing the finite element analysis procedure DRAIN-2DX. The analysis results indicate that under rarely occurred earthquake, deformation of the frame can fulfill the requirement of the seismic design code. Moreover, plastic hinges only appear at the bottom of the columns, while other column and beam ends all keep elastic, thus the residual drift of the frame is relatively small.From the analysis results, it can be concluded that the reasonably designed partially unbonded precast prestressed concrete frames will satisfy the aseismic require, and have preferable self- centering capacity, thus only a small amount of repair is needed after earthquake, and the oconomic lose will be decreased obviously.
Precast Frame Design procedure Seismic performance
Xun Chong Shao-Ping Meng
College of Civil and hydraulic Engineering, Hefei University of Technology, Hefei 230009,P. R. China College of Civil Engineering, Southeast University, Nanjing 210096, P. R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
1887-1892
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）