STRUCTURAL RESPONSE OF RESIDENTIAL-TYPE TEST STRUCTURES IN CLOSE PROXIMITY TO AN UNDERGROUND NUCLEAR DETONATION

摘要

Response was measured in three one-story simulated residential structures at distances of 2,000, 3,000 and 4,000 meters from Surface Zero for the Salmon event. Statham accelerometers were mounted at roof and floor levels in concrete block and wood frame structures. Peak measured accelerations ranged from about 1.5g (gravity units) at the near structure (concrete block) to about O.7g at the middle structure (wood frame) to about O.4g at the most distant structure (wood frame). No damage was observed in any of the instrumented structures;a companion block structure to the wood frame structure at the 4,000-meter distance suffered extension of pre-existing cracks.