The Influence of Non-Rigid Floor Structures on Facade Rigger Braced High-Rise Trussed Frames

Abstract

This paper presents a graphical method of analysis for preliminary design of horizontally loaded tall buildings which are laterally supported by vertical trussed frames and horizontal off-set riggers which are located in the exterior or facade skeletal frame structures in the direction of the lateral loading. The interaction between the trussed frames and these facade riggers is through the two floor structures adjacent to the top and bottom cords of the riggers. The method of analysis requires the calculation of seven planar stiffness parameters: bending and shear stiffness of the vertical trussed frames, the horizontal off-set riggers and the floor structures in addition to the bending stiffness of the exterior skeletal frame structures which support the riggers. The method allows a graphical procedure for obtaining the optimum level of the facade riggers in addition to a rapid assessment of the influence of the floor structures and facade riggers on the performance of the high-rise structure such as the reduction in lateral deflection at the top and the overturning moment at the base of the trussed frames.

Keywords

tall buildings high-rise structures facade riggers trussed frames in-plane floor stiffness

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References

Boggs

P.C.

and Casparini

D.A.

(1983). “Lateral stiffness of core outrigger systems”, Engineering Journal, AISC, Vol. 20, pp. 172–180.

Hoenderkamp

J.C.D.

and Snijder

H.H.

(2000). “Simplified analysis of facade rigger braced high-rise structures”, The Structural Design of Tall Buildings, Vol. 9, No. 3, pp. 309–319.

Hoenderkamp

J.C.D.

and Bakker

M.C.M.

(2003). “Analysis of high-rise braced frames with outriggers”, The Structural Design of Tall and Special Buildings, Vol. 12, No. 4, pp. 335–350.

Hoenderkamp

J.C.D.

and Snijder

H.H.

(2003). “Preliminary analysis of high-rise braced frames with facade riggers”, Journal of Structural Engineering, ASCE, Vol. 129, No. 5, pp. 640–647.

Hoenderkamp

J.C.D.

Bakker

M.C.M.

and Snijder

H.H.

(2003). “Preliminary design of outrigger braced shear wall structures on flexible foundations”, Heron, Vol. 48, pp. 81–98.

Hoenderkamp

J.C.D.

(2004). “Shear wall with outrigger trusses on wall and column foundations”, The Structural Design of Tall and Special Buildings, Vol. 13, No. 1, pp. 73–87.

McNabb

J.W.

and Muvdi

B.B.

(1975). “Drift reduction factors for belted high-rise structures”, Engineering Journal, AISC, Vol. 12, pp. 88–91.

McNabb

J.W.

and Muvdi

B.B.

(1977). “Discussion: Drift reduction factors for belted high-rise structures”, Engineering Journal, AISC, Vol. 14, pp. 44–47.

Rutenberg

and Tal

(1987). “Lateral load response of belted tall building structures”, Engineering Structures, Vol. 9, pp. 53–67.

10.

Smith

Stafford B.

Cruvellier

Nollet

M.J.

and Mahayari

A.T.

(1996). “Offset outrigger concept for tall building structures”, Proceedings of the 67th Regional Conference on Tall Buildings – A World View, Council on Tall Buildings and Urban Habitat, Lehigh University, Bethlehem, Pennsylvania, pp. 73–80.

11.

Smith

Stafford B.

and Salim

(1981). “Parameter study of outrigger-braced tall building structures” Journal of the Structural Division, ASCE, Vol. 107, No. 10, pp. 2001–2013.

12.

Smith

Stafford B.

and Coull

(1991). Tall Building Structures, Wiley, New York.

13.

Taranath

B.S.

(1974). “Optimum belt truss location for high-rise structures”, Engineering Journal, AISC, Vol. 11, pp. 18–21.

14.

Taranath

B.S.

(1975). “Optimum belt truss location for high-rise structures”, Structural Engineer, Vol. 53, No. 8, pp. 345–347.

15.

Tong

G.S.

and Weng

(2008). “A simplified method for the buckling of outrigger-shear wall braced structures”, Advances in Structural Engineering, Vol. 11, No. 1, pp. 1–15.

16.

J.R.

and Li

Q.S.

(2003). “Structural performance of multioutrigger-braced tall buildings”, The Structural Design of Tall and Special Buildings, Vol. 12, No. 2, pp. 155–176.

17.

Zhang

Z.X.

Zhao

W.G.

Zhu

H.P.

and Zhou

C.S.

(2007). “Safety analysis of optimal outriggers location in high-rise building structures”. Journal of Zhejiang University SCIENCE A, Vol. 8, pp. 264–269.