Damping mass systems in the building structures

Technological progress and needs of civil engineering development in the area of dynamic excitations: seismic, para-seismic loads, cause searching methods and means of protection building objects against vibrations. Considerable attention has been paid to researches of effectiveness of structural damping devices. Selected issues of application of dynamic vibration dampers in the building structures are discussed in the paper
DYNAMIC MASS DAMPERS IN BUILDING STRUCTURES
Technological progress and the needs related to the development of construction and dynamic excitations: seismic and para-seismic, make it necessary to search for new methods and means of protecting building structures against vibrations. Particular attention should be paid to research on the effectiveness of the damping devices used. The article discusses selected issues regarding the application of dynamic vibration dampers in building structures.
INTRODUCTION
Dynamical protection of structure has wide application in civil engineering [1,2,3].
In order to reduce level of vibrations the following methods are applied [1,4]: removal of vibration source, balancing, aligning of device resting on the foundation, modification of technological process, sliding of devices producing vibrations in a distance from object sensitive to vibrations, increasing base stiffness, active, semi-active, passive, hybrid vibration isolation, application of passive, active, semi-active, hybrid dynamic dampers, use of passive, active, semi-active, hybrid bracing.
Besides, in practice vertical or sloping trenches filled with isolation materials are applied to protect structures against seismic or para-seismic excitation. (…)

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