WHILE RETRACTING THE LANDING GEAR AFTER TAKEOFF, THE GEAR HESITATED BRIEFLY AT ABOUT MIDPOINT BEFORE RETRACTING FULLY. ATTEMPTS TO EXTEND THE GEAR THROUGH NORMAL AND EMERGENCY PROCEDURES FAILED. THE ACFT LANDED AT DULLES INTERNATIONAL AIRPORT WITH THE GEAR IN AN INTERMEDIATE POSITION. IT WAS THE PLT'S DECISION TO LAND IN THE GRASS TO THE LEFT OF RWY 30. IMMEDIATELY AFTER GROUND CONTACT, THE ACFT IMPACTED A TWO FEET HIGH EMBANKMENT. EXAMINATION OF THE WRECKAGE REVEALED THAT THE LANDING GEAR MOTOR CIRCUIT BREAKER WAS TRIPPED. RETRACTION TEST INDICATED THAT THE MAIN GEAR FUNCTIONED PROPERLY, HOWEVER EXTENSIVE DAMAGE PRECLUDED TESTING OF THE NOSE GEAR. PRIOR TO THE ACCIDENT, WHILE THE ACFT WAS TIED DOWN, ANOTHER TAXIING ACFT STRUCK ITS SPINNER AREA, NECESSITATING MAINT ATTENTION, WHICH IMMEDIATELY PRECEDED THE ACCIDENT FLT.