Abstract
This paper presents results of an experimental investigation of the strength of lap splices of headed longitudinal bars which intend to decrease the splice length to 15db (db : bar diameter). Ten 1/2.5 scale R/C beams were tested to estimate the influence of joint type, shear reinforcement, concrete strength and shape of headed bars to the strength of lap splice. Seven simple beam type tests and three double curvature type tests were done. Based on the test, the equations of the strength of lap splices of headed bars in constant moment region and flexural shear region were proposed.
