BEARING CAPACITY OF REINFORCEMENT CONCRETE MEMBERS UNDER COMBINED TENSION，BENDING AND SHEAR

Experiments of reinforced concrete (RC) members subjected to combined loading indicated that their tension，bending and shear strength would interact with each other． Based on the theory of tension-bending interaction and moment-shear correlation，a formula checking the bearing capacity of rectangular ＲC member was derived from the balance of sectional force，taking consideration of the interaction of small eccentric tension-shear and large eccentric tension-shear，respectively． Comparing with experimental data，the results calculated by the formula considering tension-bending-shear interaction consisted with the experimental data well． From a security point of view，it was suggested to further modify the design method for the members under combination of tension，bending and shear in Code for Design of Concrete Structures ( GB 50010—2010) ．