The Nonlinear Analysis Of High Performance Beams Under Reversed Cyclic Loading

At present, both at home and abroad in the high-performance concrete beams bending under monotonic loading and shear strength, stiffness, such as cracks and deformation properties of force has carried out more in-depth research, and proposed a number of the corresponding design method, but high-performance concrete structure in the low-cycle behavior of the subject under study also rarely, and the object of almost all studies of high-strength concrete and concrete beams for high-performance properties of force is still relatively small, with high durability is important characteristics of high-performance concrete structures on the seismic performance of still at an early stage. These have greatly affected the high-performance concrete in the earthquake zone application.Using finite element analysis software ANSYS on the four beams repeated loading for nonlinear analysis. Research in high-performance concrete beams under repeated loading force performance, come under repeated loading characteristics of load, skeleton curve, displacement ductility, the hysteresis curve, by the results of the analysis of high-performance concrete beams to study the seismic performance.Through the beam in the nonlinear analysis found under repeated loading characteristics of the load values measured with the theoretical value of the error smaller. The incorporation of high performance concrete admixtures on the beam load cracking enhance role of high-performance concrete beam does not affect the basic capacity, reinforcement in the same circumstances, the strength of the concrete beam on raising levels of the load-bearing capacity contributions not obvious; high-performance concrete beams with good displacement ductility, excellent seismic performance, but high performance levels and the strength of the concrete reinforcement rate of increase will lower beam displacement ductility; HPC improve the level of intensity of the beam stiffness degradation of nature no obvious impact of the rate increase was reinforced to improve the beam stiffness degradation.HPC because of its good performance and economic force, has been around the world have been more extensive application and broad prospects. This research shows that high-performance concrete beam has a good seismic performance. High-performance concrete beams in the earthquake zone application.