To study the standardized evaluation method of vibration comfort pedestrian bridges, effect transient response term is ignored based on generalized single degree freedom (SDOF) with reference to American Institution Steel Construction inc (AISC 11) specification. The resonance conditions between crowd and bridge structure are also considered, simplified an SDOF system. Then, peak acceleration u...

Abstract Moral decision-making depends on the interaction between emotional and cognitive control processes, which are also affected by sleep. Here we aimed to assess potential role of sleep in modulation moral decisions over time testing change behavioral responses dilemmas (1 week). Thirty-five young adults were tested twice, with one week sessions. In each session, participants presented 24 ...

Abstract Footbridges are among long-span light-weight structures that because of their low damping ratio susceptible to vibration. Excessive vibration in footbridges usually occurs when they subjected rhythmic dynamic loads caused by human activities like walking and running. In order mitigate the induced vibrations footbridges, an increase is often suggested as most economical approach. Tuned ...

The paper focuses on the optimal design of grounded tuned mass damper inerter (TMDI) in footbridges and some practical implementation issues. An procedure is implemented for perfectly ideal TMDI (infinite stiffness connection at ground plus linear nondissipative inerter). based reduced-order models footbridge by assuming frequency ratio damping factor as parameters, a given number values inerta...

On its opening day the London Millennium footbridge experienced unexpected large amplitude wobbling subsequent to the migration of pedestrians onto the bridge. Modeling the stepping of the pedestrians on the bridge as phase oscillators, we obtain a model for the combined dynamics of people and the bridge that is analytically tractable. It provides predictions for the phase dynamics of individua...

JF Mr. John Haworth, the Manager of the Sheffield Sewage Disposal Department at Wincobank, has considerable inroads made upon his time by deputations from other Councils and by other interested observers, he is paying the penalty of being a pioneer and the possessor of a courteous and interesting personality. We were informed by a friendly guide, who directed us to the works by way of an unhall...