Abstract: This paper presents a dry-assembly solution for precast concrete columns using orthogonal double H-shaped steel connections. By controlling the ratio of the ultimate flexural capacity between the steel section and the concrete column section, two precast concrete column specimens with steel connections and one cast-in-place column specimen were designed and fabricated. Quasi-static cyclic loading tests were conducted with the axial compression ratio as the variable. Systematic observations were made on the damage evolution law, failure modes, and mechanical performance of the connection zone for each specimen. Emphasis was placed on analyzing the influence of this connection type on seismic performance indicators, including hysteresis characteristics, skeleton curves, ductility, stiffness degradation, and energy dissipation capacity.The results indicate that the orthogonal double H-shaped steel connection does not alter the failure mechanism of the precast columns, and its seismic performance is generally comparable to that of the cast-in-place specimen, thus achieving the design objective of "equivalent to cast-in-place." For the specimen with a high axial compression ratio, the deformation capacity and ductility decrease to some extent, and the stiffness degradation rate accelerates. However, its ultimate drift ratio at failure reaches 1/38, which satisfies the limit requirement for inter-story drift ratio under rare earthquakes specified in current codes. Both the orthogonal double H-shaped steel connection segment and the anchor bars remain in an elastic working state. No obvious opening or slippage is observed at the interface between the steel anchor plate and the concrete, which verifies the reliability of this connection detail.