Repozytorium publikacji - Politechnika Gdańska

Among the issues related to the idea of sustainable society is the safety of civil engineering structures devoted to satisfy different needs of people. One of the types of structures devoted to satisfy recreational needs are grandstands, which are used during sport events or music concerts. It is obligatory to consider interaction between structure and crowd load especially when the crowd movement involves rhythmic jumping, dancing, etc. Safety and serviceability of these structures may need to be checked. This paper describes the finite element modelling generated to predict modal characteristics of a structure. Modal analysis for the model of grandstand used in Poland (see Figure 1) has been conducted. The aim of using the finite element method (FEM) is to determine the modes of free vibrations and the lowest value of natural frequency for the empty and occupied grandstand. Differences between these two cases have been obtained. There is a significant level of interaction between the mass of the spectators and the grandstand. They provide additional mass that has a significant influence on the structure leading to the substantial reduction in the natural frequencies.

Autorzy

• dr inż. Natalia Lasowicz link otwiera się w nowej karcie ,
• prof. dr hab. inż. Robert Jankowski link otwiera się w nowej karcie