Knowing the real dynamic properties of a structure, natural frequencies and vibration modes is essential to ensure comfort and safety for users, as well as predictability for maintenance of public equipment. With this objective in mind, two pedestrian footbridges on the São Paulo subway were monitored by IEME Brasil last March, which used Vibrodina, a mechanical device that makes the structure vibrate at a specific frequency range, in the dynamic forced vibration test.

“The precise determination of the structure’s natural frequency is extremely important for validating theoretical models and ensuring that it does not coincide with the excitation frequencies generated by pedestrian traffic. Avoiding resonance is essential to ensure user comfort and the structural integrity of the footbridge,” explains engineer Marco Juliani, director of IEME.

The footbridges are located at the Santo Amaro station of the São Paulo subway, which is shared by subway lines 5-Lilás (ViaMobilidade) and 9-Esmeralda, of CPTM. They are 111m long and 7.4m wide and are formed by a metal lattice structure with tubular profiles and a steel deck slab. The central span, which crosses the Pinheiros River, is approximately 80m long. The work is the responsibility of EGTC Infra.

  1 de 11

 

 

On February 13, MorumBIS hosted none other than Shakira, performing the second show of her world tour “Las Mujeres Ya No Lloran”. The Colombian singer returned after seven years for a show full of classics from her career, sung in unison by almost 80 thousand people.

Shakira, with 35 years of experience, has already won 266 awards and had 590 nominations, including 3 Grammy Awards and 12 Latin Grammy Awards, making her the most awarded female Latin artist of all time.

As we know, excessive vibration from the audience in the stands poses safety risks if it exceeds the limits allowed by technical standards, and can cause panic, accidents and even structural collapse. Therefore, regular monitoring of structures is essential, as is the case with São Paulo Futebol Clube (SPFC), when looking after the well-being of its stadium users and its assets.

At Shakira’s concert, as well as at other events of this size, the IEME Brasil team was present to measure the behavior of the structure, using sensors and evaluating the effects of dynamic loads generated by the public. This type of monitoring ensures not only the integrity of the construction, but also the safety and comfort of spectators.

  1 de 1

 

 

The “New King of Pop”, nickname given to the American singer and multi-instrumentalist Bruno Mars, lives up to his title. During the six shows he gave in São Paulo, from October 4 to 13, the star gathered a true legion of fans at MorumBIS. Approximately 409 thousand tickets were sold for the São Paulo tour, 15% of which were for tourists from other cities, according to SPTuris, the city’s events and tourism company.

As always happens on these occasions, a team from IEME Brasil was present at the São Paulo Futebol Clube (SPFC) stadium to monitor the structural behavior of the stands. The monitoring included sensors to measure the acceleration of the structure, subjected to dynamic loads, such as those generated by the public at artistic and sporting events.

It is worth remembering that the excitement of the audience generates vibrations in the structure that can exceed the limits allowed by technical standards and cause panic, accidents and even structural collapse. Regular monitoring, as carried out by SPFC, ensures the safety and comfort of users.

As a matter of interest, Bruno Mars has already won 15 Grammy Awards, including three in the “Record of the Year” category, in addition to dozens of other important awards since the beginning of his career in 2010, with the release of the album Doo-Wops & Hooligans.

  1 de 2

 

 

A team from IEME Brazil was present at the São Paulo Futebol Clube stadium on Saturday, September 7, to monitor the structural behavior of the stands during the concert by Canadian singer The Weeknd.

As is regularly done at events at MorumBIS, the monitoring work included sensors to measure the deformation of the structure, subjected to dynamic loads, such as those generated by the public at artistic and sporting events. The measurement is important because the excitement of the audience generates vibrations in the structure that can exceed the limits permitted by technical standards and cause panic, accidents and even structural collapse. Regular monitoring, as is done by SPFC, allows the adoption of preventive measures that guarantee the safety and comfort of users.

Due to the regular monitoring of the structure, the excitement was only due to the show, which ended the trilogy that began with After Hours (2020) and continued with Dawn FM (2022), at the same time that the singer gave a small sample of “Hurry Up Tomorrow”, his new album. The show ended with a pyrotechnic show on the huge stage set up on the track and drones forming the name of the artist’s new work, which drove the audience wild.

  1 de 2