This article examines the influence of internally layered reinforcement on a fully penetrated sand column embedded in soft clay using a 1-g model test. The design parameters of the test model were chosen to emulate a geotextile-reinforced granular column prototype to ensure a comparable behavior. The performance of the internally reinforced sand columns was evaluated in terms of its load carrying capability and bulging behavior. The test results show that a reduction of spacing between two consecutive reinforcement layer discs allowed by a column with strong reinforcement will lead to an increase in the bearing capability of the column. Only a column design with a proper spacing/diameter ratio and reinforcement strength can ensure a column’s bearing capability with an increase in the reinforced column length. Reinforcing a granular column with a length exceeding the predominant bulging depth of a unreinforced column will be an effective mean to ensure its bearing capability.