Article: Mechanical properties of materials during the removal of reinforced concrete internal support beams Journal: International Journal of Materials and Product Technology (IJMPT) 2026 Vol.70 No.5 pp.23 - 51 Abstract: This paper uses finite element analysis and fibre optic sensing technology to dynamically monitor and analyse the stress and strain changes of materials during the removal of reinforced concrete internal support beams, revealing the impact of different removal processes on the mechanical properties of materials. First, a three-dimensional finite element model is established using ANSYS, and the material parameters of the steel bars and concrete are input. Second, fibre optic Bragg grating (FBG) sensors are placed at key locations on the support beams to collect stress and strain data, which are then processed using Python. Finally, BIM technology is used to optimise the demolition sequence, and the impact of dynamic loads on the structure is evaluated based on finite element analysis. The experimental data revealed the effects of different demolition methods on the mechanical properties of reinforced concrete support beams. Inderscience Publishers - linking academia, business and industry through research

Title: Mechanical properties of materials during the removal of reinforced concrete internal support beams

Authors: Jie Luo; Boke Chen; Guisheng Yue; Shiliang Xie; Bingfu Bai

Addresses: China Construction Fifth Bureau, Haixi Investment and Construction Co., Ltd., Xiamen 361000, Fujian, China ' China Construction Fifth Bureau, Haixi Investment and Construction Co., Ltd., Xiamen 361000, Fujian, China ' China Construction Fifth Bureau, Haixi Investment and Construction Co., Ltd., Xiamen 361000, Fujian, China ' China Construction Fifth Bureau, Haixi Investment and Construction Co., Ltd., Xiamen 361000, Fujian, China ' China Construction Fifth Bureau, Haixi Investment and Construction Co., Ltd., Xiamen 361000, Fujian, China

Abstract: This paper uses finite element analysis and fibre optic sensing technology to dynamically monitor and analyse the stress and strain changes of materials during the removal of reinforced concrete internal support beams, revealing the impact of different removal processes on the mechanical properties of materials. First, a three-dimensional finite element model is established using ANSYS, and the material parameters of the steel bars and concrete are input. Second, fibre optic Bragg grating (FBG) sensors are placed at key locations on the support beams to collect stress and strain data, which are then processed using Python. Finally, BIM technology is used to optimise the demolition sequence, and the impact of dynamic loads on the structure is evaluated based on finite element analysis. The experimental data revealed the effects of different demolition methods on the mechanical properties of reinforced concrete support beams.

Keywords: reinforced concrete; demolition process; mechanical properties; finite element analysis; FEA; fibre optic sensor; fibre Bragg grating; FBG.

DOI: 10.1504/IJMPT.2026.153443

International Journal of Materials and Product Technology, 2026 Vol.70 No.5, pp.23 - 51

Received: 27 Mar 2025
Accepted: 09 Sep 2025
Published online: 08 May 2026 *

Title: Mechanical properties of materials during the removal of reinforced concrete internal support beams

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