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https://nap.nationalacademies.org/catalog/27432/critical-issues-in-transportation-for-2024-and-beyond

MODEL TECHNIQUES AND RESPONSE TESTS OF REINFORCED CONCRETE STRUCTURES SUBJECTED TO BLAST LOADS

COMPARISON OF RESULTS OF FULL AND MODEL SCALE EXPLOSIVE TESTS OF CUBICLES AND OTHER SIMILAR REINFORCED CONCRETE PROTECTIVE STRUCTURES HAVE SHOWN THAT A REASONABLE ESTIMATE OF THE BLAST RESISTANT CAPABILITIES OF THESE STRUCTURES CAN BE OBTAINED FROM MODEL TESTS AS SMALL AS ONE-TENTH SCALE. HOWEVER, THE RESULTS OF THE TESTS HAVE ALSO INDICATED THAT CARE MUST BE EXERCISED IN THE PREPARATION OF THE MODEL AND THE TEST SITE AS WELL AS IN THE PERFORMANCE OF THE TEST TO ACHIEVE THE TEST DATA DESIRED. DESIGN OF MODEL CUBICLES MAY BE ACCOMPLISHED USING THE "GEOMETRIC SCALING" LAWS WHEN THE EFFECTS OF GRAVITY CAN BE NEGLECTED. EFFECTS PRODUCED BY THE VARIANCE OF THE STRENGTH AND DUCTILITY OF THE MATERIALS USED WILL USUALLY BE A KEY FACTOR IN MOST MODEL DESIGNS. PROBLEMS IN CONSTRUCTION OF MODELS WILL GENERALLY BE MORE NUMEROUS FOR SMALLER MODELS. HOWEVER, MOST OF THESE PROBLEMS CAN BE ELIMINATED BY JUDICIOUS SELECTION AND, IF NECESSARY, BY MODIFICATION OF AVAILABLE MATERIAL AND METHODS USED FOR THE CONSTRUCTION OF THE MODEL. IN GENERAL, NO FIXED MODEL SCALE CAN BE RECOMMENDED AND, THEREFORE, THE VARIOUS COMPONENTS INVOLVED MUST BE EVALUATED FOR EACH TEST DESIGN. THIS EVALUATION SHOULD CONSIDER: CONSTRUCTION PROBLEMS OF THE TEST STRUCTURE INCLUDING ARRANGEMENT (SINGLE OR MILTI-CUBICLES), SIZE (HEIGHT, WIDTH, AND DEPTH), THICKNESS OF INDIVIDUAL ELEMENTS, CONCRETE STRENGTH, AND STRENGTH AND DUCTILITY OF REINFORCEMENT; TYPE, WEIGHT, AND LOCATION OF EXPLOSIVE OR EXPLOSIVES; SITE CONDITIONS INCLUDING ACCESSIBILITY AND AVAILABILITY OF THE SITE, SOIL CONDITIONS, MAXIMUM EXPLOSIVE QUANTITY PERMITTED, EXPERIENCE AND AVAILABILITY OF TEST SITE PERSONNEL; AND THE DEGREE OF STRUCTURAL DAMAGE ANTICIPATED. TO VERIFY DESIGN AND CONSTRUCTION TECHNIQUES REQUIRED FOR COMPARATIVE SCALING, AN EXPLOSIVE CUBICLE TEST PROGRAM WAS DEVELOPED WHICH INCLUDED TESTS OF ONE-TENTH, ONE-EIGHTH, ONE-FIFTH, ONE-THIRD MODELS AND FULL SCALE STRUCTURE OF A TYPICAL EXPLOSIVE STORAGE BAY. THE MODELS AND THE PROTOTYPE STRUCTURE EACH WERE TESTED SEVERAL TIMES WITH FULL SCALE EQUIVALENT CHARGES AS LARGE AS 7500 LB OF TNT. THE RESULTS OF THIS TEST SERIES INDICATED THAT DAMAGE SUSTAINED BY MODEL AND FULL SCALE STRUCTURE IS SIMILAR IF EACH IS TESTED IN A SIMILAR MANNER, THEREBY ESTABLISHING THAT MODEL TESTS MAY BE USED TO EVALUATE THE STRUCTURAL RESPONSE OF THE FULL SCALE REINFORCED CONCRETE STRUCTURES TO HIGH EXPLOSIVE DETONATIONS. /ACI/

  • Supplemental Notes:
    • No 24, TitlE NO SP 24-17
  • Authors:
    • Dobbs, N
    • Cohen, E
  • Publication Date: 1970

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Filing Info

  • Accession Number: 00209292
  • Record Type: Publication
  • Source Agency: Am Concrete Inst Journal & Proceedings
  • Files: TRIS
  • Created Date: Oct 5 1970 12:00AM