Abstract:

The main typical groups of existing buildings are considered, according to their types of wall materials and load-bearing structural systems. General approaches to the issue of modernization of individual groups of buildings are stated. For the increased seismicity conditions of the area, one of the main approaches to improve the seismic resistance of the existing buildings is proposed the reconstruction-reinforcement of the load-bearing structural system of the building by installing metal frames with seismic insulators inside the building. In the restoration of damaged buildings, crucial is such interconnection of new and old load-bearing systems that ensures their reliably joint behavior for arbitrary direction of new calculated seismic loads. The creation of such joint spatial systems from new and old load-bearing structural systems must, in each case, be preceded by a comparative analysis of the various variants processed using appropriately accurate spatial and nonlinear calculation methods.

Keywords: building; stability; seismic resistance; reconstruction.