A preliminary analytic evaluation of the seismic response of structural walls failing in a shear mode
This study examines the role of inelastic shear deformations in attenuating response of structural walls subjected to seismic excitation. Particular emphasis is placed on required shear strength having regard to damage potential, usable ductilities, and strength erosion. First the load-deformation relations for reinforced concrete structural walls failing in shear are discussed and simplified modelling of these relations introduced. Previous analytic studies using this simplified modelling and artificial earthquake simulation are then reviewed. This present study uses similar procedures to those previously employed, but with real earthquake accelerograms, and a modelling refined to account for strength erosion. It is demonstrated through simple concepts correlated by time history analyses that existing code provisions may be unnecessarily conservative in many applications.
NZS 4203:1984 "Code of Practice for the General Structural Design and Design Loadings for Buildings", Standards Association of New Zealand.
NZS 3101:1982 "Code of Practice for the Design of Concrete Structures", Standards Association of New Zealand.
NZS 4230:1985 "Code of Practice for the Design of Masonry Structures", Standards Association of New Zealand.
Robinson, L.M., "Shear Walls of Limited Ductility", Bulletin of the New Zealand National Society for Earthquake Engineering, Vol. 13 , No. 2, June 1980.
Barda, F., "Shear Strength of Low Rise Walls with Boundary Elements", Ph.D. dissertation, Lehigh University, Bethlehem, Pennsylvania, U.S.A., 1972.
Umemura, J., et al, "Earthquake Resistant Design of Reinforced Concrete Buildings, Accounting for the Dynamic Effects of Earthquakes", Giho-Do, Tokyo, Japan, 1973 (in Japanese).
Dean, J.A., Stewart, W.G. and Carr, A.J., "The Seismic Behaviour of Plywood Sheathed Shearwalls", Bulletin of the New Zealand National Society for Earthquake Engineering, Vol. 19, No. 1, March 1986. DOI: https://doi.org/10.5459/bnzsee.19.1.48-63
Moss, P.J., Carr , A.J. and Buchanan, A.H., "Seismic Response of Low-Rise Buildings", Bulletin of the New Zealand National Society for Earthquake Engineering, Vol.19 ,No.3, Sept. 1986. DOI: https://doi.org/10.5459/bnzsee.19.3.180-199
Murakami , M. and Penzien, J., "Non- Linear Response Spectra for Probabilistic Seismic Design of Reinforced Concrete Structures", Seventh World Conference on Earthquake Engineering, Istanbul, 1980.
Johnson, G.R. and Epstein, H.I., "Short Duration Analytic Earthquake", Journal ASCE, Structural Division, 102, No. ST5, 1976.
Copyright (c) 1986 L. M. Robinson
This work is licensed under a Creative Commons Attribution 4.0 International License.