Reinforced concrete buildings with shearwalls are very efficient to re
sist earthquake disturbances. In general, reinforced concrete frames a
re governed by flexure and shearwalls are governed by shear. If a stru
cture includes both frames and shearwalls, the complicated interaction
of these two components will exist. This paper describes experiments
on frames and frame-wall structures, and the experimental results are
used to check the analytical models. The tests include four frames and
two frame-wall structures. The effects of concrete compressive streng
th, section size and wall on the frames are investigated. For frames,
the horizontal force-displacement relationship predicted by the trilin
ear theory is in good agreement with the test data. However, for frame
-wall structures, both the softening truss model and the IDARC program
give deviations from the test values in the horizontal force-displace
ment relationship.