Earthquake-Resistant Design of Large-Panel Buildings
The article discusses the experience with the application of large-panel buildings in seismic areas. An analysis of the reasons why this type of buildings is one of the most promising of constructive systems construction in these areas. It is noted that among large-panel buildings most preferred constructive solutions are buildings with narrow step transverse load-bearing walls, which allows you to create a hard spatial system of the building. Are exposed to seismic improvement of large-panel buildings. Efficiency of large-panel buildings under seismic effects of different frequency composition significantly can be increased by a device in the base part of the special seismic tools in the form of seismic isolation and seismic blanking. Examples of implementation of various seismic systems in constructions of large-panel buildings in different series. Special attention is paid to constructive solutions 122 series called the roof of a building with a "dry". Presents the results of the study and refine models of large-panel buildings of this series, as well as methods of their calculation, which is of great practical significance. Analysis of settlement and theoretical studies of large-panel buildings with "dry" joints, which confirmed their high earthquake resistance. It is shown that the use of additional elements of dry friction in joints of panels allows to 30% reduced seismic loads on buildings and, accordingly, efforts in prefabricated elements of large buildings. At the same time, the reserve of bearing capacity of "dry" horizontal joints is ensured by the elastic-plastic properties of the gaskets used in them.