Seismic Response of Multi-Storey Reinforced Concrete Walls Subjected to Eastern North America High Frequency Ground Motions

Abstract eng:
A research program has been undertaken to better characterizing the contribution of higher modes of vibration on the bending moment and shear force demand on cantilevered reinforced concrete shear walls. Emphasis is put on constructions located in eastern North America. Ground motions in this region have higher dominant frequency, which leads to relatively more significant higher mode response. An example of higher mode contribution is given for two sites in Canada exhibiting different seismic settings. A shake table test program is currently being prepared to examine the influence of damping and shear and flexural stiffness degradation on higher more response. The design of the test specimens and the results from prediction analyses are discussed. A preliminary test program conducted to validate assumptions in the use of reduced-scale wall test models is also presented.

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