ULTIMATE LOAD ANALYSIS OF EXTERNALLY PRESTRESSED CONCRETE BRIDGES
Orienting to the specific characteristics of behaviors of externally prestressed concrete bridges under segmental construction, a joint model of the same displacement constraint is proposed by using freedoms coupling and mixed coordinate systems. Considering material nonlinearity, the second-order effect of external prestressing cables and the joints, both 8-node plane quadrilateral equal element and one-dimensional truss element are used for concrete and internal or external tendons. Then a finite element model is established and programmed, which is capable of performing the nonlinear all- stage analysis of segmental construction externally prestressed concrete bridges. Based on the above theory, main parameter influencing the ultimate load of the concrete bridges is analyzed and some advices are also given in the paper.
Mei-Liang Yang Chuan-Xi Li Jian-Ren Zhang
Changsha University of Science & Technology, Changsha 410076, P.R. China
国际会议
长沙
英文
235-240
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）