Research progress and prospect of distribution layer in defense works

Aimed at the design of distribution layer in defense works, the advances in distribution research were summarized and analyzed. Perfect distribution layer should be economical, practicable, reliable and have enough static/dynamic strength, which should weaken the stress waves and absorb the energy deriving from explosion to the greatest extent under the repeated impact loadings. And the development tendency was discussed. The results show: the main materials in distribution layer are still concrete or soil in the present stage and next period of time, and the perfect structure should be the combination of layered structure and cavities-contained structure. All those can be referenced for the design of advanced distribution layer in defense works.