Analysis of the influence of temperature loads on the stress-strain state of a pre-stressed cylindrical shell
Zhangabay N.Zh. Moldagaliyev A.B. Buganova S.N. Bektursunova A.K. Tursunkululy T. Ibraimova U.B.
2025Belgorod V G Shukhov State Technology University
Construction Materials and Products
2025#8Issue 4
The progressiveness of the idea of prestressing consists, on the one hand, in the possibility to regulate the stress state in accordance with the peculiarity of the structure operation, and on the other hand, in the expansion of the economically advantageous range of application of high-and high-strength steels. Such strengthening is also relevant for cylindrical shells, the throughput or storage volumes of which are directly proportional to the operating pressure. The most effective type of prestressing in this case is considered to be winding on the shell body at an angle to the longitudinal axis or in the annular direction without tilting the high-strength profile. In this regard, in this work, a theoretical study of the influence of temperature loads on the stress state of the combined shell was carried out. As a result of the study, an analytical evaluation method was developed that takes into account the mechanical, geometric values of the wall and wrapping material, as well as the parameters of the prestress, taking into account temperature effects. The developed method also found that the established ring stresses in the shell wall increase with an increase in the temperature gradient, and the stresses in the wrapping decrease. At a temperature gradient of 70°C, the ring stresses increased by 1.8 times, and the stresses in the wrapping decreased by 1.3 times. At the same time, the change in operating temperature has a noticeable effect on the distribution of stresses in the wall of the shell and wrapping. Thus, calculations of a main pipeline pre-stressed with steel wire showed that at a temperature gradient of ΔΤ=30°C, the achieved level of prestressing can decrease by 10-12% compared to the initial one, and at ΔΤ=50°C, the pre-stressed wrapping does not affect the stress state of the shell wall. The obtained results of the study indicate that, taking into account the temperature loads on the structure, it is possible to adopt the necessary design parameters for further design of steel shells even more accurately.
prestress , steel shells , temperature loads , winding angle , winding thickness
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Department of Architecture and Urban Planning, M. Auezov South Kazakhstan University, Kazakhstan
Department of Mechanics and Mechanical Engineering, M. Auezov South Kazakhstan University, Kazakhstan
Department of Technology and Design of Textile Materials, M. Auezov South Kazakhstan University, Kazakhstan
Department of Building Technologies and Infrastructure, Management International Education Corporation (KazGASA), Kazakhstan
Department of Architecture and Urban Planning
Department of Mechanics and Mechanical Engineering
Department of Technology and Design of Textile Materials
Department of Building Technologies and Infrastructure
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