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Prefabricated columns connected by grouted sleeves are increasingly used in practical projects. However, seismic fragility analyses of such structures are rarely conducted. Seismic fragility analysis has an important role in seismic hazard evaluation. In this paper, the seismic fragility of sleeve connected prefabricated column is analyzed.

A model for predicting the seismic demand on sleeve connected prefabricated columns has been created by incorporating engineering demand parameters (EDP) and probabilities of seismic failure. The incremental dynamics analysis (IDA) curve clusters of this type of column were obtained using finite element analysis. The seismic fragility curve is obtained by regression of Exponential and Logical Function Model.

The IDA curve cluster gradually increased the dispersion after a peak ground acceleration (PGA) of 0.3 g was reached. For both columns, the relative displacement of the top of the column significantly changed after reaching 50 mm. The seismic fragility of the prefabricated column with the sleeve placed in the cap (SPCA) was inadequate.

The sleeve was placed in the column to overcome the seismic fragility of prefabricated columns effectively. In practical engineering, it is advisable to utilize these columns in regions susceptible to earthquakes and characterized by high seismic intensity levels in order to mitigate the risk of structural damage resulting from ground motion.

This study aims to show how universities may engage in social responsibility approaches and to understand in depth how the university social responsibility (USR) practices contribute in achieving sustainable development.

Exploratory qualitative research was directed based on two Tunisian Universities (two case studies); the first one belongs to the public sector and the second one to the private sector. Data were collected through participant observations, group interviews, documentation as well as semistructured interviews with students and administrative staff. The survey was carried out in 2022, immediately following the COVID-19 health crisis. The interview lasted 45-min on average.

The results confirmed that USR was applicable within the two studied institutions. The two cases under investigation primarily concerned academic and philanthropic responsibilities, with practices pertaining to ethical and legal responsibilities being observed, albeit not to the same extent as the other two responsibilities. Therefore, universities prioritize the welfare of people over anything else when they implement a USR policy.

The USR is an approach that many higher education institutions, both public and private, must appropriate. Nevertheless, this field is still virgin in academic research and this theme remains unexplored within the Tunisian territory. Thus, through the present study, the authors were able to understand in depth the USR practices and confirmed that these two institutes were socially responsible. Consequently, the authors are inviting other Tunisian Universities to adhere to these approaches regarding their benefits among society, environment and economy.