Strength calculation method of reinforced concrete structures of Tashkent underground tunnels with different stages of stress condition

• Published in: IOP conference series. Materials Science and Engineering 2019-10, Vol.615 (1), p.12083
• Main Author: Miralimov, M
• Format: Article
• Language: English
• Subjects: Bearing capacity; Concrete; Concrete construction; Concrete structures; Construction costs; Economic impact; Reinforced concrete; Structural members; Tunnel construction; Tunnel linings; Underground structures
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/615/1/012083

Modern requirements of engineering practice in tunnel construction are related to the problems of strength and the identification of reserves of bearing capacity of tunnel lining. The achieved success in creating rational reinforced concrete structures of tunnel linings is largely determined by the results obtained in the field of mathematical and mechanical modeling of deformation processes. Reinforced concrete large-sized building structures constitute the main structural elements of the Tashkent underground tunnels in Uzbekistan, as reinforced concrete under proper conditions gives a significant technical and economic effect, reducing the time and cost of construction. Experiments on the bending of reinforced concrete beams with a gradually increasing load indicate various stages of the stress condition. To achieve the most economical consumption of materials, it is proposed to calculate structures for the forces that act under breaking load. This paper presents a method for calculating the lining of reinforced concrete tunnels of the Tashkent underground based on the more accurate assessment of the fundamental properties of reinforced concrete that determine its behavior under external load.