Yaroshenko D. Development of schemes and methods of calculation of nonlinear dynamic interaction of buildings of frame type with damper devices

Object of research - nonlinear interaction of buildings and installations of frame type with damper devices at the dynamic loadings. The aim of the thesis - development of scientific positions in relation to the choice of structural charts and methods of calculation of nonlinear dynamic interaction of buildings of frame type with damper devices. Research methods - methods of structural mechanics, theories of natural and forced vibrations of the mechanical systems, finite element method, "method of lines"; Mathcad, LIRA, SCAD, laboratory experiment. Theoretical and practical results: charts and methods of creation and calculation of models of the system are developed "building + damper device", and also nonlinear process of dynamic interaction of its subsystems; the developed methods of calculations allow to determine the rational locations and charts of setting of damper devices in buildings and installations of frame type, and also parameters of nonlinear descriptions for providing of durability and stiffness of constructions, set level of comfort for people, good condition and capacity of devices and equipments. Scientific novelty - for the first time nonlinear differential equations of motion with the use of "method of lines" for a time-history design temporary realm of dynamic interaction of different damper devices with buildings of frame type, which have an eventual number of degrees of freedom; found out conformities to law in the frequency spectrums of forms of eigenmodes of one-story and multistory frames with the different joints and static loadings; found out scopes and principles of location of areas of condensing of frequencies are described; it is rotined that at adding to the system of nonlinear damper devices there can be effects of change of structure the model of building and motions with stops; at comparison of efficiency of different types and charts of damper devices it is discovered with linear and nonlinear dissipative elements, that efficiency of tuned mass dampers with a viscous and dry friction is most from the considered variants (it in 4-5 times higher than efficiency of absorbers of vibrations with a viscid and dry friction); for frame building the new chart of effective damper device, built on the basis of device of transformation of motion, is created, and also his dynamic model and method of calculation of all system is offered in time domain. Implementation extent: job performances are accepted to introduction in design work of public corporation the "Project institute of "Dneprproektstal'konstrukciya" for damping vibrations of transborder, Laboratory of pit heads of Donbas National Academy of Civil Engineering and Architecture (for the decline of vibrations of constructions of headframe), and also were inculcated in the educational process of SHEE "Pridneprovskaya State Academy Civil Engineering and Architecture" and Odessa State Academy of Civil Engineering and Architecture. Sphere of the use: dynamic calculations and protecting from the excessive vibrations of buildings and installations.