A NEW FORMULA FOR BEARING CAPACITY OF RC ECCENTRIC COMPRESSION MEMBERS

In GB 500102002,the Mu-Nu relevant curve composed of two relevant curves couldn't transit well,and the small eccentric curves couldn't be connected with the axial point,which cause the calculation results with small eccentric formula near axial compression point to be unsafe.A unified calculation method is derived to connect pure bending,eccentric compression and axial compression.The formula has a definite physical meaning.Through the convergence between the small eccentric compression curves and axial compression point,these issues can be solved effectively.By comparing the curve of unified formula with that of code,which is consistent relatively,the judge of the type of eccentricity can be cancelled and the calculated reinforcement area can be returned to the unified formula for checking.The results show that there is a reinforcement mutation between small eccentricity formula and axial compression formula of the code.The small eccentric formula near axial compression point is not safe.The reinforcement calculation of the unified formula has a good transition and can meet the demand of GB 500682001.