Desing of One Storey Building With Precast Concrete Sandwich Panels in Earthquake Regions

Abstract eng:
The object of this study is the development of a structural precast system for a supermarket chain in order to have the same quality of product construction all over Greece regardless of its application site and independently of the area seismicity. The dimensions of one typical storey building was approximately 50.0x25.0x0.50 (AxBxH m). The load bearing structure of the building consists of columns restrained in the foundation with special anchors or Koecher – Foundation. Between the columns were placed double-walls (precast Sandwich panels) with insulation and for the earthquake resistance some walls placed in certain positions along the external perimeter. These walls were designed by special connections with the foundations and columns in order to achieve restrain. The panels were connected on the top with beams by hinges (so called Dual Type), define as the combination of structural walls and frames. It is well known that precast concrete structures generally provide poor performance in earthquakes and the existing codes do not provide adequate guidelines for the designing of prefabricated structures so it is very important that the modeling of such structures must be very precise in order to be able to make the design of the connections. The structure was calculated with linear and finite surface elements (3d- modeling) by taking in mind every peculiarity of the building. Slab is acting as diaphragm. The seismic behavior was calculated according to the Dynamic Spectral Method (Norm: EC8). Seismic Behavior Factor q=1.5. Specially calculated and designed connections between the elements (columns- walls, column – beams, column/ wall – foundation, metal structure – concrete elements) is giving the ability to the system for uniform action.

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