Abstract
Hybrid girders have been considered as an economical solution, especially if they are adopted in the performance based design. In this paper, five hybrid girders were tested experimentally to investigate moment-shear interaction and behavior of web panels. In addition, hybrid and homogeneous girders with various web slenderness ratios were tested analytically. Experimental results indicated no significant moment-shear interaction. Shear strength of the experimental tests were reasonably estimated by the nominal strength in LRFD, although those of analytical results were approximately 90% of the nominal strength. Analytical results revealed that yielding of the web panels occurs in different order based on the web slenderness ratio and whether hybrid or homogeneous girders.
