Steel-concrete composite beams (CB) are widely used in super high-rise buildings, extra-large bridges, underground space engineering and large-scale energy facilities because of their strong bearing capacity, good plastic deformation, convenient construction and low cost. As a result, maintaining the mechanical qualities of steel and concrete constructions requires the integrity of the contact between the two materials. The interface flaws would lessen the steel tube's constraint on the structure's core concrete and alter its mechanical characteristics. Therefore, an essential problem is the intelligent simulation of the interface connection between steel and concrete CB. The goal of this work was to examine the benefits of steel and concrete CB and to model them effectively using the discrete element approach. This work proposed a particle model based on the discrete element approach. The model can effectively establish and analyze the three-dimensional space of buildings in real life, and improve the efficiency of building construction. According to the test results, the maximum durability of rigid joints exceeded 90%, while the maximum durability of spliced steel main beams was only about 70%. Obviously, the elasticity of the rigid joint is higher than that of the spliced steel girder, and the stability was also higher than that of the spliced steel girder. Based on the results of the discrete element method, steel-concrete CB with rigid joints have high stability and elasticity, and can be safely used in different buildings.

Yanqiu Ma, Jiayuan Chen, Yukang Zeng. Research on Intelligent Simulation Calculation of Interface Connection between Steel and Concrete Composite Beams Based on Discrete Element Method. Academic Journal of Architecture and Geotechnical Engineering (2025), Vol. 7, Issue 2: 15-24. https://doi.org/10.25236/AJAGE.2025.070203.

[1] Karthik S, Rao P, Awoyera P O.Strength properties of bamboo and steel reinforced concrete containing manufactured sand and mineral admixtures[J]. Journal of King Saud University - Engineering Sciences, 2017, 29( 4):400-406.

[2] Xie J , Li J , Lu Z , Li Z, Fang C, Huang L. Combination effects of rubber and silica fume on the fracture behaviour of steel-fibre recycled aggregate concrete[J]. Construction & Building Materials, 2019, 203(APR.10):164-173.

[3] ORTOLAN, Vinicius, de, Kayser. Comparative assessment of corrosion of concrete reinforced with unprotected steel and hot-dip galvanized steel.[J]. Revista de la construcción, 2017, 16(2):238-248.

[4] Faris, Meor, Ahmad. Performance of Steel Wool Fiber Reinforced Geopolymer Concrete.[J]. AIP Conference Proceedings, 2017, 1885(1):1-5.

[5] Boukhalkhal S H , Ihaddoudene A , Neves L ,  Madi W. Dynamic behavior of concrete filled steel tubular columns[J]. International Journal of Structural Integrity, 2019, 10(2):244-264.

[6] Nam J , Lyu J , Park J . Particle generation to minimize the computing time of the discrete element method for particle packing simulation[J]. Journal of Mechanical Science and Technology, 2022, 36(7):3561-3571.

[7] Lv Y , Li H , Zhu X , Song NN, Zheng Z. Discrete element method simulation of random Voronoi grain-based models[J]. Cluster Computing, 2017, 20(1):335-345.

[8] Canonne C L , Diakonikolas I , Gouleakis T ,  Rubinfeld R. Testing Shape Restrictions of Discrete Distributions[J]. Theory of computing systems, 2018, 62(1):4-62.

[9] Yan B , Regueiro R . Large-scale dynamic and static simulations of complex-shaped granular materials using parallel three-dimensional discrete element method (DEM) on DoD supercomputers[J]. Engineering Computations, 2018, 35(2):1049-1084.

[10] Fukuda D , Mohammadnejad M , Liu H . Development of a 3D Hybrid Finite-Discrete Element Simulator Based on GPGPU-Parallelized Computation for Modelling Rock Fracturing Under Quasi-Static and Dynamic Loading Conditions[J]. Rock Mechanics and Rock Engineering, 2020, 53(3):1079-1112.