Experimental Study On Proper Ratio Of Steel Skeleton Of Steel Reinforced High-Strength Concrete Columns

With the development of national economy and the enhancement of people's matter culture living standard, building structure has been faced with a new challenge. The requirement of height, span and strength of architecture is improved as well. The traditional structures have not met these needs. Steel reinforced high-strength concrete structure (SRHC), an amalgamation of two structure system, will possess their advantages naturally, and will obviously improve ductility and strength of the structure. With these advantages, the SRHC can maximize both social and economic benefits. So it is important in theory study and practical usage to study SRHC.The experimental study is carried out through four C80 SRHC columns with the span ratio of 3.0 and the axial pressure ratio of 0.26 subjected to low cyclic reversed lateral loads. The major factor, i.e., the proper ratio of steel skeleton, affecting the seismic behavior and bearing capacity of SRHC columns, is taken into consideration. In this paper,the analysis of the hysteretic behavior, skeleton curve, ductility, dissipated energies, intensity decrease, bond stress, cracking load and bearing capacity are discussed.With the affect of economical efficiency and execution conditions in terms of experimental results and theoretical analysis the proper ratio of steel skeleton is proposed depending on the high bearing capacity and proper displacement ductility in the end.