Abstract
Because of the development of high performance steel and the increasing attention on the performance based design in recent years, the application of hybrid plate girders have been investigated. However, it seems that there have not been sufficient experimental and analytical data to propose specifications for performance based design. In this paper, 17 hybrid girders were fabricated and statically tested with various combinations of moment and shear. The results indicated that there was no significant interaction between moment and shear strength based on stress distributions in web panels. In addition, the test results confirmed that the proposed equation by authors gives more reasonable estimation for the shear strength of hybrid girders.