A member global buckling strength estimation of spatial truss roof with semi-rigid joints is proposed according to both the results of the connection bending tests of spatial roof truss joints. The proposed estimation method is introduced to a parameter formulation for the phenomenological constitutive model simulating yield strength increment by cold-forming, post-buckling behavior and post-buckling ductile fracture. The accuracy is validated against static unit-truss element test and dynamic shaking-table test, including truss member buckling and member fracture.
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