The term «object reliability» is given in accordance with the current standards. The two main methods for determining the reliability of building structures are presented. Specific design features of spiral-fold silos and a brief history of their development are described. The results of experimental studies of spiral- fold silo structures are presented.

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Sergii Pichugin, Kateryna Oksenenko; A spiral-fold silo is an innovative storage for wood chips. AIP Conference Proceedings 15 February 2023; 2678 (1): 020013. https://doi.org/10.1063/5.0118821 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search

In the context of martial law, Ukraine's agricultural sector is suffering significant losses. By May 2022. Ukraine has already lost almost 13 million tonnes of elevator capacity, some of the grain warehouses have been completely destroyed, and some are in the occupied territories. In this regard, there is a need for elevator capacities, namely, prefabricated, cost-efficient storage capacities. Such structures are exemplified by silos. There are many design solutions for metal silos. However, the rising cost of materials is causing a need to reduce the material intensity of the structure, which is encouraging cylindrical silo manufacturers to search for new types of shell construction. An innovative design of lightweight, industrial silos is a metal spiral-fold silo. The article describes the design of steel spiral-fold silos. The specifics of the spiral-fold silo design, which affects their stress-strain state, are analysed. The characteristics of the silo that was used as a source of samples for the experiment are given. The samples and equipment for the experimental study of a wall of a metal spiral-fold silo are considered. The stages of the experiment are described. The loading of the samples was performed by a central bending load applied in a static mode in the range from 0 kN to 5.5 kN. To determine the relative strains, the structure was unloaded after each loading stage. The analysis of the sample's relative strains which were measured by AVD-4 is made. The character of interaction and deformation of the wall with the folding lock is revealed. The degree of the folding lock opening was estimated. The character of work of the wall and the folding lock in the limit and non-limit states is obtained. A comparison of experimental results with finite element analysis in the LIRA-SAPR software package was performed. The conclusion about the reliable operation of the wall of a spiral-fold silo under operational and increased loads is substantiated

В статті наведено історичні аспекти розвитку силосних конструкцій. Розглянуто конструкцію сталевих спірально-фальцевихсилосів та спосібформування циліндричного корпусу. Проілюстрована загальнаконструкція спірально-фальцевого силосу. Описаний досвід експлуатаціїспірально-фальцевихсилосів.

Metal capacities for the storage bulk materials are became widespread every year. The design of the steel spiral-fold silos and the peculiarities of the folding lock are considered in the article. The elements of the rigidity system of prefabricated metal silos from corrugated panels on bolted joints are given.

The article describes the types of silos depending on the wall design. A review of the standard documents that are in force on the territory of Ukraine and regulate the determination of loads and forces in silos is carried out. The differences between the calculations of horizontal and vertical pressures on the walls of silos according to DBN B2.2-8-98 Enterprises, buildings and structures for grain storage and processing and DSTU-N B EN 1991-4:2012 Eurocode 1: Actions on structures – Part 4: Silos and tanks were analyzed. The design formulas for defining pressures according to two standards are given. The spreads of statistical properties of particulate solids are analyzed. The normative horizontal pressure and vertical frictional pressures for a flexible silo were calculated according to two standards. Graphs of horizontal and vertical pressures of particulate solids material on the walls of a flexible silo are presented. According to the calculations, it is concluded that the spreads of statistical properties of particulate solids has a significant impact on the magnitude of loads on the vertical walls of silos. It is noted that the value of the wall friction coefficient has a significant impact on the calculation of horizontal pressure

The advantages of metal silos in comparison with reinforced concrete are given. Types of silos depending on a wall design are considered. The construction of steel spiral-fold silos and the method of forming a cylindrical body are considered. The general design of a spiral-fold silo is illustrated. Features of the folding lock, its geometry and location are described. The specifics of the construction of spiral-fold silo, which affects their stress-strain state, are analyzed. Listed two calculation schemes of silо depending on the complexity of input information for the computer. The standard documents which regulates the design of steel silo tanks on the territory of Ukraine are analyzed. The main loads and influences which are accepted at calculation of silos are listed. The basic formula of check of the general durability of a wall of a silo is resulted, the components of the formula are decrypted. The algorithm for calculating the spiral-folded silage is given.

Concept of bulk material and complexity of storing it are explained. The dependence between the physical and mechanicalproperties of the loose material and type of construction in which it is stored. Structural elements considered silos and siloswith conical and flat bottom are described. The common characteristics of metal silos for bulk materials are given. The classification of metal silos by type of housing design is given. The advantages and disadvantages of silos are described.The possibility of storage of bulk materials in cylindrical shells is analyzed depending on the type of construction. The history of occurrence of structures of spiral-fold silos is considered. The set of equipment for the construction of the housing ofthe spiral-fold silos is given, the step-by-step process of formation of the folding lock and features of the installation processare presented. The analysis of the structure is made and the advantages and disadvantages of spiral-fold silos are determined.