The circular economy proposes a paradigm shift from the ‘take-make-waste’ type of economic system and aims to foster innovation, resource efficiency, and waste prevention. Mega sporting events can be considered great opportunities to promote sustainable cities and communities and leave a lasting positive legacy after the post-game stage. Qatar will organize the upcoming FIFA World Cup in 2022 and Ras Abu Aboud (RAA) is designed as a fully reusable and modular shipping container stadium, which will be dismantled, relocated, and reused after the tournament. This study aims to present the first comprehensive analysis on the social sustainability and legacy aspects of a circular and sharing economy application for the FIFA World Cup organization. The research analyzes the entire life cycle phases of the RAA stadium including the raw material production, construction, operations, and end-of-life. The Ecoinvent v.3.7.1 is used to quantify the midpoint environmental and endpoint human health impacts. For its operation phase assessment, two operation scenarios are comparatively analyzed: one-year temporary operation (Scenario 1) and 50 years of permanent operation (Scenario 2). Later, a simulation-based sensitivity analysis is conducted. Finally, we discussed how circular and modular design thinking can bring long-lasting legacy post-event, through reuse and recycling from a socio-economic perspective. An important finding shows that circular design under Scenario 1 can save up to 60% of human health impacts and significantly reduce the material footprint and dependence on imported construction materials. This research will enhance future awareness for sustainability benefits of circular and sharing economy application adopted by mega sporting events concerning the United Nations 2030 Agenda for Sustainable Development and FIFA's post-game legacy and sustainability strategies.

循环经济提出了从“采取-制造-废物”类型经济体系的范式转变，旨在促进创新、资源效率和废物预防。大型体育赛事可被视为促进可持续城市和社区发展并在赛后阶段后留下持久积极遗产的绝佳机会。卡塔尔将在 2022 年举办即将到来的 FIFA 世界杯，Ras Abu Aboud (RAA) 被设计为一个完全可重复使用的模块化集装箱体育场，在比赛结束后将被拆除、搬迁和重新使用。本研究旨在首次对 FIFA 世界杯组织的循环和共享经济应用的社会可持续性和遗产方面进行全面分析。该研究分析了 RAA 体育场的整个生命周期阶段，包括原材料生产、建设、运营和报废。Ecoinvent v.3.7.1 用于量化中点环境和终点人类健康影响。对其运营阶段评估，比较分析了两种运营场景：临时运营一年（场景1）和长期运营50年（场景2）。随后，进行了基于仿真的敏感性分析。最后，我们从社会经济的角度讨论了循环和模块化设计思维如何通过重用和回收来带来持久的事后遗产。一项重要发现表明，情景 1 下的循环设计可以减少高达 60% 的人类健康影响，并显着减少材料足迹和对进口建筑材料的依赖。这项研究将提高未来对循环和共享经济应用的可持续性收益的认识，这些应用被关于联合国 2030 年可持续发展议程和国际足联赛后遗产和可持续性战略的大型体育赛事所采用。