| Popis: |
Terrorist attack is a great threat to the safety of the city. Due to particularity of the subway tunnel, the concrete lining will produce the strongly nonlinear response and dynamic damage under blast load, even collapse of the concrete lining structure. Protection technology of the concrete lining under blast load has become an urgent problem to be solved. By the means of the finite element software, this essay simulates the highly nonlinear response of concrete lining with aluminum foam. Aluminum foam has been widely used in the field of disaster preventive and mitigation. Application of the aluminum foam under blast load can absorb a large amount of impact energy and reduce the peak value of pressure in the concrete lining. |
