The ornamental design for a swimmingpoolframestructure, as shown and described.
FIG. 1 is a top plan view of an alternative embodiment of a swimming pool
frame structure showing my new design, the portion shown in dotted lines
is included for illustrative purposes only and forms no part of the
claimed design,
FIG. 2 is a bottom view thereof, the portion shown in dotted lines is
included for illustrative purposes only and forms no part of the claimed
design,
FIG. 3 is a front view thereof, the portion shown in dotted lines is
included for illustrative purposes only and forms no part of the claimed
design and the rear view is a mirror image thereof; and,
FIG. 4 is a left side view thereof, the portion shown in dotted lines is
included for illustrative purposes only and forms no part of the claimed
design and the right side view is a mirror image thereof.