This　paper　is　to　analyze　the　seismic　response　of　the　spatial　structure　supported　by　the　column　subjected　to　the　near　fault　excitation.　Three　analysis　models,　such　as　fix　base　model,　the　SSI　model　without　considering　the　radiation　damping　and　the　SSI　model　considering　the　radiation　damping,　are　analyzed　simultaneously　subjected　to　the　near　fault　excitation.　The　statistical　analysis　is　carried　out　for　the　displacement　at　the　mid-span,　the　axial　force　of　the　upper　chord,　the　web　and　the　bottom　chord　for　the　models.