Optimization of Constructions With Grates Made of Round and Oval Tubes

Marutyan, Aleksandr; Orobinskaya, V N

doi:10.22227/1997-0935.2016.10.45-57

Cited by 4 publications

(1 citation statement)

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“…To compare the new solution with the known, five variants of the steel truss of the coating of the industrial building with a span of 18 m from the profile pipes are considered: -a rafter truss made of curved profiles of rectangular (square) section [10]; -a truss with a lattice of rhombic pipe [11]; -a truss with a grille made of a round tube [12]; -a truss with a lattice made of an oval pipe [12]; -a truss with a lattice of flat-oval pipes, where the formation of the transition and flattened parts of the rod elements of the tube-shaped lattices is recommended to be performed with a slope of the transition section 1/4 [13].…”

Section: Discussionmentioning

confidence: 99%

Optimization of flat-oval pipes and perspectives of their application in core structures

2018

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The calculation of optimal parameters of flat-oval pipes is given by an approximate method, the correctness of which is confirmed by testing using standardized profiles. A new layout of gratings made of flat-oval shaped pipes is presented, developed for truss systems based on steel rod structures of coatings with replacement of bar-shaped bent elements with tubular ones. The caseless junctions of belts and lattices with direct joining of rod elements to each other without alignment are developed, as well as with structural eccentricities limited to 0.25 of the height of the waist elements, which allows not to take them into account in calculations and provides an increase in the degree of unification of the nodes of the upper and lower belts of carrier’s constructions. The prospects of using a new technical solution in light metal structures of buildings and structures are shown. The area of its rational application is outlined, where by means of variant design of typical, known and new solutions, a quantitative estimate of the reduction in the consumption of structural material is given. The whole diagram of changes in the design parameters of flat-oval pipes is shown in the transformation of their cross-sections from vertical configurations to horizontal ones, including the transition through the outline of a circular shape.

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Section: Discussionmentioning

confidence: 99%

Optimization of flat-oval pipes and perspectives of their application in core structures

2018

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Optimization of the Structure of Flat Metal Tube Trusses

Zin'kova

2020

Lecture Notes in Civil Engineering

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Loading optimization of the metal trusses has a variational basis. The universal criterion of optimization is the minimum of potential energy of the system (additional energy) in functional space expanded at the expense of functions fields of configuration and (or) material modules, as well load. The proposed variational method of truss synthesis is based on the principle of possible work and generalization of the variational principles of Lagrange and Castigliano by expanding the functional space of geometric parameters. The criterion of equal strength of the truss established in the linear statement of the variational problem creates the prerequisites for finding its optimal topology and geometry when specifying the type of load, directive parameters, mechanical characteristics of the material, and the flexibility of compressed rods. The global minimum potential energy of deformation of the optimal truss corresponds to the global minimum material consumption. As numerical experiment was consider the distribution of load P F i = const for the truss with descending (ascending) pivot. It is established the independence of optimal loading variant from truss grating structure.

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Optimization of constructions with the grids of lenticular pipes

Marutyan

Galdin²

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Presented a new technical solution, which is a highly efficient technical and economic indicators and massively used in industrial civil engineering. Development work and optimization design calculations of lattice structures using video surveillance from core pipes. Their new technical solution has been developed, the originality of which is confirmed by patent examination. Worked gussetless node connections of belts and grids with direct connection of core elements to each other without misalignments, as well as constructive eccentricities limited by 0.25 height of belt elements, which allows not to take them into account in the calculations, provides an increase in the degree of unification of the nodes of the upper and lower carrier zones designs. The whole diagram of changes in the design parameters of the lenticular pipes is given during the transformation of their cross sections from vertical to horizontal configurations, including a transition through a circular shape. The prospects of using a new technical solution in light metal structures of buildings and structures are shown. The area of its rational use is outlined, where, using alternative design of known and new solutions, a quantitative assessment of the resources of their carrying capacity is given.

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Optimization of Constructions With Grates Made of Round and Oval Tubes

Cited by 4 publications

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Optimization of flat-oval pipes and perspectives of their application in core structures

Optimization of flat-oval pipes and perspectives of their application in core structures

Optimization of the Structure of Flat Metal Tube Trusses

Optimization of constructions with the grids of lenticular pipes

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