Abstract
The authors reported on the experimental results of this thema under repeated pure bending in Part-1 (No.128 Oct. 1966). And this report concerns two test executed afterwards under different condition : under pure shear and under bending and shear. Some of the result are as following; 1) Under pure shear : The load deflection curves are nearly the same as that for the joint-less beam till the first major slip and show very limited deformation at each slip. The major slip occurs at the web splices. But the deformation is very small as long as the flange splices are securely connected, and there is ample reserve capacity beyond the first major slip. The clamping force in the web bolts tends to decrease with increasing load similarly in the flange bolts under pure bending. 2) Under bending and shear (i. e. General condition) : The rigidity of high-tensile-bolt-jointed beams is very high and is almost the same as a joint-less beam. The strength of the joints may be defined by the load at the first major slip, and it may be occured at the flanges by bending stress. The clamping force in the bolts tends to decrease with increasing load, that of the flanges by bending and of the webs by shear. The load of first major slip tends to declease with repetition of loading. This phenomena is recognized at the cas of both pure. bending and pure shear.
