Abstract: Based on a high - rise residential gas explosion accident case, the work flow of detection and reinforcement design of high-rise residential building after explosion was discussed. During detection, the scope of detection shall be determined according to the preliminary investigation of gas explosion accident site. According to the damage characteristics, crack condition and deformation of structural members, the damage degree of structural members is judged, and the basis for the reinforcement of the structure is also provided. For the reinforcement treatment of structural members, it shall be classified according to the actual damage degree. For the members which have been seriously damaged, it shall be replaced and repoured. For the rest members, relevant reinforcement measures also shall be acted, for meeting the bearing capacity and deformation of structure.

Key words: high rise shear wall structure, gas explosion, detection; reinforcement method