| Owning the advantages of high bearing capacity, high stiffness, good seismic performance, and effectively reducing the section size, Steel Reinforced Concrete(SRC)structures have been widely used in construction industry. SRC columns are the main vertical components in the structural system, and their mechanical properties will have a significant effect on the overall performance of the structure. In recent years, national and international researchers have carried out a large number of experimental studies on the flexural and shear capacity of SRC columns and proposed the calculation methods of the load carrying capacity,some of which have been encoded. The present study compares the calculation methods and the associated experimental data of SRC columns in terms of the flexural and shear bearing capacities. The main research contents and results are summarized as follows:1) Regarding the flexural bearing capacity, the Standards and associate calculation models based on the superposition principle are able to predict the bearing capacity of short SRC columns accurately but under-estimate the bearing capacity of long SRC columns with a significant scattering. On the other hand, the Standards and associate models based on the reinforced concrete principle are able to predict the bearing capacity of SRC columns more accurately.2) Regarding the shear carrying capacity, YB2006 is based on the superposition principle and over-estimates the responses of the components with a large shear span ratio components, without considering the reduction effect of the shear span ratio on the shear strength of the section steels. JGJ2012 are able to predict the responses satisfactorily and conservatively.3) Through the practical examples of the mega-column calculation, it is found that,YB2006 and JGJ2012 have slightly difference in calculation of the flexural carrying capacity and the former is simpler than the latter. JGJ2012 tends to be more conservative in the shear carrying capacity calculation. |
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