Gasii G. The steel and concrete composite cable space frames

Object – the steel and concrete composite cable space frames; aim – to address the issue of developing, researching and calculating new effective spatial combined structures; methods – material resistance and construction mechanics methods to analyse stress and strain state of the steel and concrete composite cable space frames; experimental research methods to study stress and strain state and determining destruction nature of the steel and concrete composite cable space frames; mathematical statistics methods to analyse experimental and numerical study results; novelty – developed and patented rational types of designs – the steel and concrete composite cable space frames; developed taking into account spatial work and engineering methods for calculating stress and strain state of created structures and their constituent elements; efficiency and expediency defined to use created structures as a buildings and structures roof, their technical and economic advantage is justified in comparison with those used in construction by analogues; for the first time, based on experimental test results, the stress and strain state of the created structures and destruction nature of their constituent elements have been studied; the acceptability defined of proposed methods for plates reinforcing and their combination with rod elements into spatial modules; deformation schemes defined; correctness confirmed of the developed calculation theory; finite-element models obtained for further development to calculate and conduct linear and nonlinear analysis of the stress and strain state of created structures and their constituent elements taking into account specifics of their construction and work; results – bearing systems, nodal connections and structural elements developed of the steel and concrete composite cable space frames; the branch defined for rational application of the steel and concrete composite cable space frames; work specifics studied, geometric parameters determined, main provisions formulated concerning the steel and concrete composite cable space frames design, including specifics of their calculation; experimental models, separate elements and large-scale samples developed and manufactured for the steel and concrete composite cable space frames, as well as study method for stress and strain state; tests performed, obtained data processed and analysed; calculations and finite-element analysis performed for strain and stress state of the steel and concrete composite cable space frames; basic provisions developed concerning manufacturing and installation technology, as well as technical and economic performance defined for the steel and concrete composite cable space frames; field – construction.