Suspension bridges possess a number of advantages, allowing overlapping average and large spans. The basic disadvantage of suspension bridges can be considered their increased deformability, particularly under the action of non-symmetrical and local loads. Deformability depends, in general, on the kinematical character of displacements of a flexible suspension cable. Required rigidity of suspension bridges is achieved, by increasing the height, and consequently the weight of a stiffening girder, by diagonal suspenders or two-cable or combined prestressed systems. Reduction of kinematical displacements of the main cable can also be achieved by a reduction of the sag-to-span ratio, but the smaller the sag of a cable, the greater are the cable thrust forces and the required cross-sectional areas of the cables. One of the ways of suspension systems stabilization is giving certain bending stiffness to the suspension cables. Such structural solution with success is used in suspension roofs. With the aim to increase the stability of suspension bridges the author proposes to use the finite bending stiffness cables. The cables can be made of standard steel profiles or have composite sections. Conventionally, they are called as “rigid cables”. To verify this solution, the investigation on behavior of suspension bridges with rigid cables under loading has to be undertaken.

Suspension bridges possess a number of advantages, allowing overlapping average and large spans. The basic disadvantage of suspension bridges can be considered their increased deformability, particularly under the action of non-symmetrical and local loads. Deformability depends, in general, on the kinematical character of displacements of a flexible suspension cable. Required rigidity of suspension bridges is achieved, by increasing the height, and consequently the weight of a stiffening girder, by diagonal suspenders or two-cable or combined prestressed systems. Reduction of kinematical displacements of the main cable can also be achieved by a reduction of the sag-to-span ratio, but the smaller the sag of a cable, the greater are the cable thrust forces and the required cross-sectional areas of the cables. One of the ways of suspension systems stabilization is giving certain bending stiffness to the suspension cables. Such structural solution with success is used in suspension roofs. With the aim to increase the stability of suspension bridges the author proposes to use the finite bending stiffness cables. The cables can be made of standard steel profiles or have composite sections. Conventionally, they are called as “rigid cables”. To verify this solution, the investigation on behavior of suspension bridges with rigid cables under loading has to be undertaken.

Baigiamojo darbo tikslas - ištirti daugiaaukščio kabamojo namo architektūrines galimybes ir konstrukcinius sprendinius. Pirmame skyriuje atlikta lyninių konstrukcijų apžvalga ir raidos analizė. Aprašytos lyno savybės, gamyba, eksplotacija ir dažniausiai naudojami lynų tipai. Pateiktos kabamųjų stogų, kabamųjų ir vantinių tiltų konstrukcinės schemos ir reikšmingiausi statiniai. Antrame darbo skyriuje tiriamos lynų panaudojimo daugiaaukščių pastatų konstrukcijose architektūrinės galimybės. Miestas suskaidomas į aukštus, suformuluojama miesto pirmo aukšto problema ir pateikiamas šios problemos sprendimas panaudojant kabamuosius namus. Pateikiami esami kabamųjų namų projektų ir realizuotų pastatų aprašymai. Sukurti nauji kabamųjų namų modeliai: vienos atramos trijų korpusų uostamiesčio namas, keturių atramų namas virš upės arba gatvės, aštuonių atramų namas virš aikštės arba parko. Trečiame skyriuje analizuojami kabamojo namo konstrukciniai sprendiniai. Sukurtos kabamųjų namų konstrukcinės schemos remiantis kabamųjų ir vantinių tiltų konstrukciniais sprendiniais. Atliktas konstrukcijų lyginamasis skaičiavimas. Nustatomas daugiaaukščio pastato tarpatramio ir masės santykis naudojant kabamąją ir rėminę konstrukcijas. Suformuluotos tiriamojo darbo išvados ir pateiktos rekomendacijos tolesniems moksliniams tyrimams. Darbo apimtis – 70 psl. teksto be priedų, 44 paveikslai, 1 lent., 21 bibliografiniai šaltiniai, 3 priedai. / The aim of this final paper is to explore architectural adaptability possibilities and constructional solutions of cable-suspended buildings. In the first chapter, the development of cable structure is reviewed. The peculiarities of cable properties, production, exploitation requirements and types of rope are described. Also, the main structural schemes with significant buildings analogue of cable roof, suspended bridge and stayed bridge are given. In the second chapter, the architectural possibilities of cable structure appliance in multistory buildings are analyzed. It is suggested to divide city to stages, also the a problem of the first stage is formulated and the solution to this problem is given using cable-suspended building. The descriptions of projects and realizations of cable-suspended buildings are presented. Moreover, new models of cable-suspended buildings are designed: a three corps seaport building of one support, a building of four supports above a river or street, a building of eight supports above the square or park. In the third chapter, constructional solutions of cable-suspended building are analyzed. Structural design schemes of cable-suspended building are made with reference to constructive solutions of suspended and cable-stayed bridge. Comparative calculation of two type constructions is given where the proportion between span and construction mass of cable-suspended and frame structure is measured. The conclusions of analysis are formulated and... [to full text]