Development Of Spatial Metal Wooden Bar Constructions Of Coatings, From Composition Wooden Elements

Аннотация

Metal wooden spatial core structure, including upper and lower grids, braces, combining the nodes of the upper and lower grids, and vertical strands, characterized in that, in order to ensure redistribution of forces and uniform load of structural elements and giving additional stiffness compressive composite small-sized boards of the upper belt and the lower metal belt with a special tensile nut to give the building a structural lift, are displaced in plan relative to each other by 45 °, while the braces in the nodes of the grids are located mutually perpendicular and in one direction they are made descending, and in the other ascending, through one node. KEYWORDS Metal-wood, spatial structure, rod structure, upper belt, lower belt, descending rod, ascending rod. INTRODUCTION reduce labor input and increase installation speeds. Currently, in Uzbekistan and abroad, The main directions of economic and social intensive searches are underway for new development of Uzbekistan for 2020-2025 and solutions of spatial wooden structural bar for the period until 2030 outlined measures to structures, methods for their calculation are reduce the material consumption of being improved. structures and increase the efficiency of capital construction. One of the ways to solve Very effective are lightweight orthogonal the set tasks is to develop and put into metal-wood structural structures. However, practice new lightweight effective building their known schemes have a number of structures, including metal-wooden structural drawbacks, and calculation methods require structures, which allow to save materials, clarification. Limited information on the The US A Journals Volume 02 Issue 12-2020 113 The American Journal of Applied Sciences IMPACT FACTOR (ISSN – 2689-0992) 2020: 5. 276 Published: December 27, 2020 | Pages: 113-121 Doi: https://doi.org/10.37547/tajas/Volume02Issue12-17 OCLC - 1121105553 deformability and long-term bearing capacity nodes of the upper and lower grids, and of such structures. It is necessary to further vertical strands, in order to ensure improve the nodal interfaces and study them redistribution of forces and uniform load of in real conditions to study the actual elements structures, the upper grid is shifted operation of the structure. Based on modern in plan relative to the lower one by 45 °, and requirements for structural coatings, the the braces in the grid nodes are mutually development of new effective orthogonal perpendicular and in one direction they are metal-wood structures and the improvement made descending, and ascending in the other, of methods for their calculation is an urgent through one node [3]. The disadvantage of and sought-after topic. this spatial design is that it does not fully ensure the redistribution of forces and The metal-wooden structure of composite uniform load on the structural elements, and wooden elements belongs to the field of also does not impart a structural lift to the construction and is intended for lightweight structure, as well as the cross section of the collapsible (if necessary) coatings of buildings compressed upper belts and braces made of with significant spans. With a small unit cell solid beams. size of 1500x1500 mm, it will be possible to build structures with dimensions of 6.0x6.0 m, The aim of this study is to ensure 6.0x9.0 m, 6.0x12.0 m, 6.0x15.0 m, 6.0x18.0 m, redistribution of forces and uniform load of and t The width and length of the structure structural elements and giving the structure a can be adjusted by adding a unit cell. These building lift, as well as additional rigidity due prefabricated structures are recommended to composite compressed rods. In this case, for agro-industrial, farm and dekhkan farms, the goal is achieved by the fact that the metal- livestock, poultry and horticultural complexes. wooden spatial bar structure, including the The small size of the unit cell allows the use of upper and lower grids, composite braces wood up to 2.0 meters in size, which will allow connecting the nodes of the composite upper modification of wood rods in small bathtubs and lower metal grids and vertical strands, the and transport in small vehicles. lower grid is shifted 45 ° in relation to the upper one, and the composite the braces in It is known that a spatial bar structural the nodes of the grids are arranged mutually structure, including intersecting rods of the perpendicularly and in one direction they are upper and lower zones and a lattice in which made descending, and in the other direction the vertices of the pyramids, the bases of ascending, through one node [1]. which are located in one belt, are located at the centers of the bases of the pyramids For the proposed version of the structural located in another belt, and the faces of the design measuring 12.0 x 12.0 m, the pyramids are shifted one relative to another dimensions of the cell elements are shown 120 °, and their tops are connected by strands below: in Fig. 1 shows