Damage Assessment of Shear Wall Structures in an Earthquake–Blast Disaster Chain

Shear wall structures are widely used in civil engineering, and their seismic design has been the focus of much attention. Explosions can result from the rupture and ignition of gas pipelines under seismic action, and there are currently no methods to appropriately assess the damage levels of shear wall structures under such hazard chains. Thus, this study provides a two-stage analysis method for the damage assessment of shear wall structures in an earthquake–blast disaster chain. A damage index of the structure is derived to evaluate the damage state. A 12-story shear wall structure is analyzed numerically to demonstrate the proposed assessment method. The results show that the damage state (DS) of the shear wall structure in an earthquake–blast disaster chain can be increased by one or even two levels when explosive loads are introduced following exposure to seismic actions. Therefore, the earthquake–blast disaster chain has an important impact on the response of shear wall structures and warrants further study to find ways that can better protect such structures against similar disasters.

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