Analysis Based On The Measured Defects Within The Tube-truss Explosion

In recent years, large-span spatial structures are more widely used in China, spatialstructures as an important place of human activities and landmarks, their security is directlyled by the Department of social and economic wealth and life safety. With the tension of theinternational security situation, the sudden explosion of events, the spatial structure in theblast loading will result in serious damage to, or even total collapse causing casualties andproperty damage. Generally, in China, the reseach of sustainable design and aseismatic designof the building structure is more comprehensive and in-depth. The design of the temporarydesign and occasional design of the building structure is relatively lag behind, especially foraccidental design, for most of the building were not designed for accidental design situation.So the research on dynamic response and failure mode under the blast loads are verymeaningful to evaluate the structure’s safety and take the defense measure against accidentalexplosion and territories’attack．tube-truss roof structure based on an engineering track defects detected by the data, theuse of probability and statistical theory and methods, and establish the structure of defectsrandomly distributed, and parameters of statistical information, and on this basis, the use ofnon-linear display dynamic finite element analysis software ANSYS/LS-DYNA, to considerthe tube truss structure roof layer, without regard to the tube truss structure roof tier twoanalysis models, and taking into account the rod defects tube-truss structural dynamiccharacteristics, location of explosives, explosives equivalent parameters, by analysis comparedifferent parameters of the explosion on the tube truss structure of power response which hasbeen the impact of defects on the structure of the antiknock performance; and roofing layer,the relationship between the position of the explosion, explosives equivalent tube trussstructure antiknock performance and structure of the weak position provide a theoretical basisto ensure building safety.