Measurement Simulation of the Protection Capacity of A National Defense Cave Anti-blast and Anti-penetration Design

摘要

During the wars in the history, attacking the opposing part's logistics is the primary scheme that the both battle sides want to adopt. In the future, the caves will be the key and whole object of such logistics. In general, many caves are hidden and undistinguishable because they are located in the mountains, but their gateways are the most susceptible and the easiest aggression way of the arm. Therefore the gateway is the most important defense area which must be strengthened. In this paper, a new anti-blast and anti-penetration protective solution is proposed which can reinforce the defense capability of the gateway and protect the cave from attacking. Moreover, a protective wall with specific material and structure in front of the gateway is designed. The structure utilize air-cavity insulation effect. By using reduced model, the efficiency of the complex design structure for anti-blast is verified in LS-DYNA, a nonlinear-dynamic finite element program. Under the same explosive load and the same peak load, the different responses between the specific protective wall and normal reinforced concrete wall are compared in this article. Above simulation result shows that the new protective structure can protect the caves under the explosive load very effectively. It is proved that the specific protective wall is significant and economical in the actual cave protective solution.