Study On Bearing Capacity For SRC Special Shaped Columns

Based on experimental study of SRC special shaped columns subjected to low cyclic loading, through bearing capacity, the arrangement of T-shape steel, channel steel and angle shape steel used in different types of SRC special-shape columns is analyzed. The relationship between the steel position and concrete cover thickness in SRC special-shaped columns, and the principle of shape steel layout of SRC special-shaped columns are also studied. Through experiment, reveal the action behavior, failure patterns and bearing capacity of the T, L and + shaped SRC columns, examines the hypothesis of plane cross-section of average strain and preliminary obtain the general variation regularity of failure of SRC special shaped columns. On the basis of above mention research work, got the N-M ,M_x- M_y and M - φ interaction curve by the soft of XTRACT. The computer programs of calculation of M -φ interaction curve by using numerical iterative method. With this program, we can calculate ultimate strength of different cross-sections. Also, Furthermore, according to the Technical specification for steel reinforced concrete composite structures, calculated the bearing capacity of members. The comparison between theoretical result and experimental result shows satisfactory agreement. In addition, calculation and comparison the bearing capacity of SRC special shaped between members, this member are different in cross-section, shape steel ratio , material and loading angles. Finally, initial research above the practical designing method for SRC columns with special shaped cross-section are given in this paper.