Numerical Simulation on Moment-rotation Behavior for Unbonded Post-tensioned Precast Concrete Beam-column Connections
An unbonded post-tensioned (PT) precast concrete beam-column connection is constructed by post-ten sioned the beam and the column using high-strength steel strands that are not bonded to the concrete.The PT tendons connect the precast beam and the column to resist moment and provide self-centering capacity.Numerical models of 5 beam-column connections subjected to monotonic and cyclic loading are built and ana lyzed via the general FEM software.Moment-rotation behavior of each connection is further investigated.And the influence of the main parameters such as the initial post-tensioned stress, reinforcement ratio of the precast beam, stirrup ratio of the beam and eccentricity of the post-tensioned tendons is discussed.The self centering behavior of the connections is also investigated.The results show that the connections have ade quate stiffness and strength capacity and good self-centering performance.Under 4% drift, the column and the main part of the beam remain elastic.
Jianping Han Jun Chen
Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, China
国际会议
哈尔滨
英文
458-463
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）