Abstract: Based on the numerical analysis method, the finite element model of typical residential building was established by LS-DYNA software. The propagation law and overpressure load of gas explosion wave with different volume ratio θ in residential space were studied. The dynamic response and failure mode of masonry structure and reinforced concrete structure kitchen under gas explosion load were analyzed. The explosion-proof kitchen considering explosion-proof requirements was put forward and its explosion-proof effect was verified. The results showed that the peak overpressure does not decrease significantly when gas explosion wave propagates from kitchen to living room. Due to the reflection of the walls on both sides, the peak overpressure will increase significantly when the explosion wave propagates to the end of the corridor. The explosion-proof effect of reinforced concrete structure kitchen is obviously better than that of masonry structure. For kitchen with explosion-proof requirements, reinforced concrete structure should be preferred. The explosion-proof kitchen designed on the basis of reinforced concrete structure kitchen can reduce the damage of gas explosion wave to kitchen structural components and prevent the explosion wave from entering the interior space of the house.

Key words: gas explosion wave, typical residential building, explosion-proof kitchen, numerical analysis