The Alternation Story-Height Truss Lateral-Load-Resisting System and its Simplified Analytical Method

Based on the characteristics of 3D parking, a new type of 3D parking structure with alternation story-height truss lateral-load-resisting system is proposed in this paper. By adoption of the assumption of inflection point, a simplified analytical method for this system under horizontal load is studied and the formulas for internal forces of it are derived. The numerical example indicates that the error of the results calculated by the presented formulas does not exceed 5% in comparison with those by finite element method. Therefore, the method and its related formulas are feasible for preliminary design of the steel 3D parking structure since its accuracy and briefness.