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Zhang W.-F.,PLA University of Science and Technology | Zhang W.-F.,Luoyang Hydraulic Engineering Technical Institute | Guo Z.-K,PLA University of Science and Technology | Ren W.-J.,PLA University of Science and Technology | And 3 more authors.
Advanced Materials Research | Year: 2013

Small span arch steel structures on spring-settlement support and normal support were designed as research objects. 1kg, 2kg, 3kg and 5kg TNT group charges were detonated respectively on the center surface of backfill above the structures. Numerous data was obtained during these tests. The comparisons of measured parameters were done between the structures with spring-settlement support and normal support. The results indicate that, the structure with spring-settlement support can reduce the magnitude of internal force, decrease the dynamic effects significantly, and enhance thebearing capacity. © (2013) Trans Tech Publications, Switzerland. Source


Zhang W.,PLA University of Science and Technology | Zhang W.,Luoyang Hydraulic Engineering Technical Institute | Guo Z.,PLA University of Science and Technology | Li D.,PLA University of Science and Technology | Yan F.,PLA University of Science and Technology
Journal of Information and Computational Science | Year: 2014

In order to analyze the dynamic response of flexible bearing-soil-structure system under explosion, and the affecting factors, the dynamic model of flexible bearing-soil-structure system is established, and the simulation analysis is carried out. First, the research development at home and abroad is summarized. Second, the simplification of explosion effect is discussed. Then, the explosion dynamic models of flexible bearing-soil-beam and flexible bearing-soil-arch system are constructed respectively. Finally, the weakened effect of stiffness and damping of flexible bearing on the explosion load, and the effect of the deflection and the inner force are obtained. 1548-7741/Copyright © 2014 Binary Information Press. Source


Weifeng Z.,PLA University of Science and Technology | Weifeng Z.,Luoyang Hydraulic Engineering Technical Institute | Zhikun G.,PLA University of Science and Technology | Dapeng L.,PLA University of Science and Technology | And 3 more authors.
Research Journal of Applied Sciences, Engineering and Technology | Year: 2013

In order to find effective method to decrease the dynamic effect, the arched structure with the spring-settlement support was designed. The parameters such as pressure, strain and displacement was determined to investigate the influence of the shallow-buried and the spring-settlement supported structure's bearing capacity under the dynamic loading. Experiment showed that the bearing capacity of the shallow-buried structure with the spring-settlement support was much enhanced as compared with conventional support under the dynamic loading. Experiment also proved that how much in a degree the spring- settlement support influence the bearing capacity is relative to spring's rigidity. © Maxwell Scientific Organization, 2013. Source


Du J.,Luoyang Hydraulic Engineering Technical Institute | Li W.,Luoyang Hydraulic Engineering Technical Institute | He Y.,Luoyang Hydraulic Engineering Technical Institute | Lv X.,Luoyang Hydraulic Engineering Technical Institute
Advanced Materials Research | Year: 2011

in this paper, the dynamic performance of the single rod magnetorheological damper (MRD) without accumulator in different working status is researched, which is a new type of MRD developed by us to apply in the environment of explosion and shock. It is concluded that there is no offset force in the new MRD. The maximum damping force and energy absorption capability increase non-linearly with the excitation current and piston's velocity. The mechanical model of this type MRD is proposed. By comparison of the results of tests with simulation, it is proved that the mechanical model proposed in this paper can simulate the dynamic performance of the new MRD accurately. © (2011) Trans Tech Publications. Source

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