A STUDY ON STIFFENING CAPACITY OF DOUBLE-TUBE MEMBERS

Susumu Kuwahara, Motohide Tada, Takaya Yoneyama, Katsuhiko Imai

Journal of Structural and Construction Engineering (Transactions of AIJ) · 1993 · 31 citations · 0 references

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Abstract

The double-tube member presented here consists of outer circular tube and inner circular tube which has shorter length than the outer. The outer tube resists axial force and inner tube restrains lateral displacement of outer tube by bending resistance. The results obtained from the axial loading test to confirm laterally stiffening effect of inner tube are as follows. Inner tube with suitable strength and stiffness prevents buckling of the member in elasto-plastic range and the remarkable axial deformation of the member is obtained beyond yield load without any decrease of loading both under monotonic and repeated loading.