The Impact of Textile-Reinforced Concrete on the Stress-Strain State of Cantilever Elements in High-Rise Buildings
Abstract
The Impact of Textile-Reinforced Concrete on the Stress-Strain State of Cantilever Elements in High-Rise Buildings
Incoming article date: 12.12.2025A comparative study was conducted to examine the impact of high-strength and dispersion-reinforced concrete on the stress-strain state and structural economics of a high-rise building. The objective of the study was to select optimal solutions for load-bearing columns and cantilever elements. Using a model of a 104.0-meter-tall business center, calculations were performed in the LIRA-SAPR software package for B40 and B80 grade concrete, steel fiber reinforced concrete (based on B40), and a new material—textile-reinforced concrete (TFC). TFC demonstrated improved strength properties. It was found that using steel fiber reinforced concrete for columns allows for a reduction in their cross-section, and the required area of reinforcement bars is reduced by 30–60% compared to conventional concrete. Moreover, for small cross-sections (400x400 mm), the use of high-strength B80 concrete is limited by the standard maximum reinforcement percentage. Calculation of cantilever slabs showed that using 80 mm thick TAB instead of traditional 120 mm thick reinforced concrete results in a 35% reduction in deflection and ensures multiple fine cracking. An economic analysis revealed that the cost per linear meter of a 400x400 mm steel fiber reinforced concrete column is 20.6–26.9% lower than its B80 and B40 counterparts. The cost per square meter of a cantilever slab made of TAB is 14% lower than the base case. The results confirm the high efficiency of the combined use of fiber-reinforced concrete for the frame and TAB for thin-walled cantilever elements in high-rise construction.
Keywords: Textile-reinforced concrete, steel fiber concrete, high-strength concrete, high-rise building, cantilever structures, columns, stress-strain state, LIRA-SAPR, dispersed reinforcement, concrete strength, crack resistance