Seismic Performance of RC Coupled Short-Pier Shear Walls with Concealed Bracing

Abstract

The RC short-pier shear wall structure is a new type of structural system in tall residential buildings. It has been applied in many buildings in China, but its seismic performance is worse than that of normal shear wall structures. Therefore, how to improve its seismic performance becomes a problem which has been paid much attention by engineers. In this paper, the seismic performance of short-pier shear walls with concealed bracing is investigated. An experimental study of four 1:3 scale coupled short-pier shear wall specimens has been carried out, two of which were normal coupled short-pier shear walls, and the other two coupled short-pier shear walls with concealed bracing. Based upon the experimental study, the effects of concealed bracing on the load-carrying capacity, stiffness, ductility, hysteretic behavior, energy dissipation and failure mechanism of shear wall are discussed. It is shown that the seismic performance of short-pier shear walls is greatly improved by concealed bracing. Finally, mechanical models for calculating the load-carrying capacity of the shear wall are proposed, and the theoretical results agree well with those from experiments.

Keywords

reinforced concrete short-pier shear wall concealed bracing seismic performance

Get full access to this article

View all access options for this article.

References

Cao

W.L.

Dong

H.Y.

G.Z.

Zhang

J.W.

and Huang

X.M.

(2004a). “Experimental study on seismic behavior of RC coupled shear wall with concealed bracings”, Journal of Building Structures, Vol. 25, No. 3, pp. 22–28.

Cao

W.L.

Xue

S.D.

and Zhang

J.W.

(2003a). “Seismic performance of RC shear wall with concealed bracing”, Advances in Structural Engineering, Vol. 6, No. 1, pp. 1–13.

Cao

W.L.

Zhang

J.W.

Cui

L.Z.

Song

W.Y.

and Zhang

H.Y.

(2003b). “Experimental study on seismic behavior of low-rise double-function RC shear wall with concealed bracings”, Journal of Building Structures, Vol. 24, No. 1, pp. 46–53.

Cao

W.L.

Zhang

J.W.

Tian

B.F.

Liu

L.C.

and Song

W.Y.

(2004b). “Experimental study on seismic behavior of low-rise RC shear walls with concealed bracings and calculation of their load-carrying capacity”, China Civil Engineering Journal, Vol. 37, No. 3, pp. 44–51.

Cheng

S.G.

Chen

S.Y.

and Liu

J.W.

(2000). “A shaking table test on shear wall structure with frame short pillars for high-rise buildings”, Building Science, Vol. 16, No. 1, pp. 12–16.

Dong

H.Y.

Cao

W.L.

Huo

and Zhang

J.W.

(2002). “Nonlinear FEM analysis of RC low-rise shear wall with concealing bracings”, Earthquake Engineering and Engineering Vibration, Vol. 22, No. 5, pp. 66–70.

Dong

H.Y.

Cui

L.Z.

Cao

W.L.

and Tian

B.F.

(2001). “Influence of reinforcement proportion of the concealed bracings on seismic behavior of RC shear wall”, World Earthquake Engineering, Vol. 17, No. 3, pp. 76–79.

Huang

D.S.

Cheng

W.R.

and Peng

(2005). “Low-cycle loading experiment study on symmetric double short-pier shear walls”, Journal of Building Structures, Vol. 26, No. 3, pp. 51–56.

Iliya

and Bertero

(1980). Effects of Amount and Arrangement of Wall-Panel Reinforcement on Hysteretic Behavior of Reinforced Concrete Walls, Report UCB/EERC-80/04, Berkeley (CA): Earthquake Engineering Research Center, University of California.

10.

Paulay

Priestlty

M.J.N.

and Synge

A.J.

(1982). “Ductility in earthquake resisting squat shear walls”, ACI Srtuctural Journal, Vol. 79, No. 4, pp. 257–269.

11.

Rong

B.S.

(1997). “Short-leg shear wall structural system used in tall residential buildings”, Journal of Building Structures, Vol. 18, No. 6, pp. 14–19.

12.

Thomas

N. S.

(2002). “Shear strength and deformation patterns of R/C wall with aspect ratio 1.0 and 1.5 designed to Eurocode 8 (EC8)”, Engineering Structures, Vol. 24, pp. 39–49.

13.

Zhang

and Lu

Z.T.

(2001). “Earthquake simulation test of short leg shear wall tube model”, Journal of Southeast University, Vol. 31, No. 6, pp. 4–8.

14.

Zhang

Z.T.

and Feng

(2001). “Special-shaped column light-weight frame and short-leg shear wall residential structure system”, Building Structure, Vol. 31, No. 7, pp. 48–50.

15.

Zhang

J.W.

Cao

W.L.

Sun

J.Q.

and Zhang

Z.G.

(2003). “Nonlinear seismic response analysis of RC shearwall structure with concealing bracings and large space on the ground floor”, World Earthquake Engineering, Vol. 19, No. 3, pp. 91–96.

16.

Zhang

J.W.

Cao

W.L.

Tian

B.F.

Hou

G.Y.

and Han

(2004). “Earthquake simulation test of RC shearwall structure with concealed bracings and large space on the ground floor”, Journal of Building Structures, Vol. 25, No. 6, pp. 44–51.