Combined behavior of the hinged facade system and reinforced concrete frame of the building under seismic impact

Строительные конструкции, здания и сооружения

The object of research is an element of system of hinged facade construction. This work aims to study the influence of building frames on the stress–strain state (SSS) of the subsystem of hinged facade systems (HFS) with their joint numerical calculation on the effect of dynamic seismic load. Method. In research the external enclosing structure numerical modeling isolated from the building and together with the reinforced concrete frame of the building. The comparison of SSS and the first natural frequency of the HFS is carried out with an isolated and joint calculation with the building. SSS and the first natural frequency are also compared for various provisions of the HFS. Results. When the HFS is calculated together with the building, the maximum stresses in the subsystem increase up to 5.8 times. The first natural frequency of HFS directly decreases in the range from 1.4% to 7.6%. In this case, the net fluctuations of the HFS occur at the tenth natural frequency of the combined model. The position of the HFS on the facade of the building has little effect on the VAT of the subsystem and does not affect its first natural frequency.