DEVELOPMENT OF AN INNOVATIVE SEISMIC DESIGN PROCEDURE FOR FRAME-WALL STRUCTURES

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DEVELOPMENT OF AN INNOVATIVE SEISMIC DESIGN PROCEDURE FOR FRAME-WALL STRUCTURES

T. J. SULLIVAN, M. J. N. PRIESTLEY and G. M. CALVI

Rose School, University of Pavia

Via Ferrata 1, 27100 Pavia, Italy

A displacement-based design (DBD) methodology for structures that are comprised of

both frames and walls has been proposed and then tested through examination of several

case studies. Strength proportions between walls and frames are decided before any

analysis has begun. The various steps required to represent a frame-wall structure as a

single-degree of freedom system are identified and a Direct DBD process is then adopted

to set the required strength level. To test the design methodology, two sets of 4, 8, 12,

16 and 20-storey reinforced concrete structures are designed, with different proportions

of the total strength assigned to the frames. A suite of time-history analyses have then

been conducted to validate the methodology, which is seen to perform reasonably well.

Finally, improvements to the procedure are outlined and areas for future research are

identified.

Keywords: Displacement based design; frame wall; dual system; seismic design.

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