超限三塔楼及连接空间桁架结构分析设计

温江文体中心结构由三座呈"品"字形排布的钢框架塔楼及空间桁架采光屋盖组成,三塔楼在标高23.7m处与屋盖刚性连接,最高塔楼总高约33m,属于重点设防类高层抗震超限建筑。结构设计过程中,利用多种分析软件,建立了整体模型、分塔模型以及三个单塔模型对主体结构进行小震下的弹性分析、弹性时程补充分析,大震下的弹塑性时程分析及构件性能化分析,并对结构中重要构件进行了专项分析,包括对屋盖和楼板的温度作用分析,利用移除构件法对屋盖托桁架进行抗连续倒塌分析以及对跃层斜柱的稳定性进行分析并反算长度系数等。上述各项分析结果表明,该结构设计合理可靠,各项指标满足规范相关要求,在小震、中震、大震作用下均能够完成预先设定的性能目标。

A relationship between temperature and aggression in NFL football penalties

Background： Increased ambient temperature has been implicated in increased physical aggression, which has important practical consequences. The present study investigates this established relationship between aggressive behavior and ambient temperature in the highly aggressive context of professional football in the National Football League （NFL）. Methods： Using a publicly available dataset, authors conducted multiple hierarchical regression analyses on game-level data （2326 games）. Results： The analysis revealed that temperature positively predicted aggressive penalties in football, and that this relationship was significant for teams playing at home but not for visiting teams. Conclusion： These results indicate that even in the aggressive context of football, warmer weather contributes to increased violence. Further, the presence of the heat-aggression relationship for the home team suggests that the characteristics of interacting groups may influence whether heat would have an adverse effect on the outcome of those interactions.

深圳虹湾花园多塔复杂超高结构设计

深圳虹湾花园为带5栋超高层塔楼的多塔结构。塔楼均为多项不规则且超B级高度的部分框支剪力墙结构。除根据各塔楼的超限特点采取相应加强措施外,从数值角度分析大底盘部分对塔楼地震作用的影响,并进行了大底盘混凝土楼板温度应力分析。最后,补充转换梁细部应力分析,校核常规梁单元模拟转换梁的计算结果,确保结构安全。