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Tests were conducted on ten concrete beam-interior column frame assemblies subjected to static cyclic loading simulating the effect of severe earthquake loading. The frame members were near full-scale and contained a range of proportions of prestressing steel and nonprestressed steel. Information applicable to seismic design concerning inelastic flexural deformation capacity and degree of damage was obtained. A central prestressing tendon at mid-depth in the beam passing through the joint was shown to be effective in contributing to joint core shear strength. Several design recommendations are proposed.
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Park et al. (1977) studied this question.
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