COMPARISONS ANALYSIS OF MAJOR DESIGN SPECIFICATIONS ON CALCULATING LOAD-BEARING CAPACITY OF STEEL REINFORCED CONCRETE (SRC) COLUMN

The calculation methods to calculate load-bearing capacity of steel reinforced concrete(SRC) column are mostly based on calculation of the bearing capacity of reinforced concrete column,the allowable stress law of steel column and the superposed method.Four typical calculation methods respectively based on the above patterns provided by ACI-318-02 specification,AISC-LRFD design code,and the Specification for SRC structure(YB 9082-97) of China are introduced.According to a calculation example of load-bearing capacity of SRC eccentrically compressed,calculation method and steps of the four routine calculations pattern are presented.Load-bearing capacities of a series of SRC columns specimens tested before in references are also calculated using the method of the above specifications and codes,and comparison analysis between calculated results and test results are also conducted.It is denoted that among the four typical methods,the AISC-LRFD calculation method provides very conservative calculation results,calculation methods of the ACI specification and YB 9082-97 specification provides results close to the test results.