Hinged Brick Facade Systems for Seismic Regions of Russia

Abstract

The results of experimental studies on the assessment of seismic resistance of various structural solutions of hinged facade systems with a facing layer of brickwork under the action of dynamic loads on the structure, simulating seismic effects in earthquakes of 7-9 points on the scale of MSK-64 are presented. Dynamic tests were carried out with the use of an installation developed at Moscow State University of Civil Engineering, which included a metal stand with special movable supports, hydraulic cylinders (Actuator) and modern measuring equipment. This equipment made it possible to evaluate during testing the force effects on the stand, accelerations, displacements and deformations in any element of the stand and the hinged facade system. Two design variants of the hinged facade system, in which different types of masonry fastening to the supporting substructures are applied, are considered. The factors affecting the seismic stability of the facing layer under the action of dynamic loads and excluding its destruction and the appearance of cracks in it are established. During the tests, accelerations and deformations of the structures of the hinged facade system at the specified points were obtained. On the example of the analysis of the results of experimental dynamic studies of the system of the ATS-450 type of "U-kon" Company of, the effectiveness of the use of special measures that ensure the monolithic masonry and, accordingly, its reliability under seismic influences is shown.