Recently, emergency structures have been in the spotlight because of the coronavirus disease (COVID-19) pandemic. This research examines the use of modular integrated construction (MiC) in developing an emergency hospital for individuals with novel coronavirus-infected pneumonia (NCIP). The whole process of building is based on the modular design and assembly idea. The primary structure was constructed using the modular steel buildings (MSBs) concept to suit emergency structures’ functional qualities and quick construction needs. An intelligent operation and maintenance management platform was built utilizing 5G, AI, IoT (IoT), cloud, big data, an d other technologies. A BIM model was created to evaluate and compare the construction plan, develop the combined section and connection node plan, and complete the detailed design of assembled steel structures. On-site modularization of fundamental structural components and accessories is utilized in a flowing operating mode, where the housing and supporting installation are closely coordinated. The research results show that information and data interaction is the key to speedy building design and construction, with digital simulation in one stage and on-site assembly in a crammed way. The study findings may be used to build comparable structures faster, utilizing modular building techniques.

The corrosion of steel bars embedded in concrete structures results in the degradation of their structural capacity. In earthquake-prone zones, the corroded structure may be considerably vulnerable under mainshock–aftershock sequences relative to a single mainshock. Therefore, it is necessary to reinforce corroded structures to resist potential natural hazards. In this study, the effects of both pitting and uniform corrosion on the structural capacity of a bridge pier before and after strengthening were studied. Subsequently, the failure probability of a corroded bridge was calculated, which is conditional on the corrosion level, steel plate thickness, and ground-motion intensity. The findings implied that both pitting and uniform corrosions significantly reduced the capacity of the bridge pier, particularly pitting corrosion. The fragility curves showed that with an increased thickness of the steel plate, the probability of failure decreases if the intensity of the mainshock–aftershock sequences is higher than the threshold value. In addition, the threshold value has a high correlation with the thickness of the steel plate and the corrosion ratio.

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