抄録
It has been known experimentally that the strength and rigidity of the welded steel trusses of tubular construction will often be decreased by the local deformations taken place at their panel points. Therefore in order to make these local deformations as small as possible and to utilize the merits in the structural shape-trusses, the author devised a welded steel truss in which the T-structural shape (half the H-structural shape) is adopted for its chord members and the steel tube for its web members. In this welded steel truss we shall be able to adopt two kinds of panel points in the construction of its panel points, such as the eccentric and non-eccentric panel points. In this paper a type of above mentioned welded steel trusses is treated, of which the panel points are non-eccentric panel ones. A specimen is tested to find its strength and rigidity in elastic range under the vertical concentrated loading at a panel point of its upper chord member, and the results in this test are discussed in comparison with the results of the theoretical analysis on consideration of the second stresses for the welded steel trusses. The results are as follows. The elastic behaviors of the specimen in the test were found to satisfy most of the results of the theoretical analysis and the foundation to get a elasto-plastic analysis for this welded steel trusses was established.
