This is the eighteenth in the CIVIL-COMP series of conferences concerned with the application of computers to civil, structural and environmental engineering. The conference will provide a forum for the presentation and dissemination of recent research and developments in the use of computers in civil, structural and environmental engineering. The conference themes encompass both the latest hardware and software developments as well as algorithmic and theoretical techniques.

The first conference was held in London in 1983. Further Civil-Comp Conferences have been held in Europe on a regular basis. Previous venues for the Civil-Comp Conferences have included: Edinburgh, Budapest, Prague, Leuven, Lisbon, Gran Canaria, Athens, Valencia, Dubrovnik, Naples, Sitges and Montpelier.

The 15,000 papers from past conferences are archived on www.ctresources.info and papers are allocated DOIs.

A major objective of the conference will be to link research and innovative ideas to engineering practice. Presentations describing technology transfer from recent research projects to practical projects are encouraged.

The conference is also concerned with both theoretical, mathematical and scientific developments as well as applications of established technology to new domains.

The conference runs concurrently with:

• AI CIVIL-COMP 2025: The Seventh International Conference on Artificial Intelligence, Soft Computing, Machine Learning and Optimization in Engineering, and
• PARENG 2025: The Eighth International Conference on Parallel, Distributed, GPU and Cloud Computing for Engineering

Conference participants may attend sessions from any of the three conferences.

This list is in the course of preparation.

The current list of special sessions includes:

• CC-S1: Railway Research and Technology Development
  organised by:
  Prof. João Pombo, UK
  Dr. Pedro Aires Montenegro, Portugal
  Dr. Pedro Antunes, UK
  Dr. Diogo Ribeiro, Portugal
  
  Increasing demands on improving the efficiency, competitiveness and sustainability of the railway networks require the operation and maintenance cost reduction, usually done by increasing the life cycle of both vehicles and infrastructure. Further challenges lie in increasing the speed, interoperability, safety and comfort of railway transportation.

  This multidisciplinary session aims at bringing together researchers and experts from various fields reporting on the current state of railway research and technology development. The discussion should promote the interaction and collaboration among universities, research centers, railway operators and industry in order to identify problems, propose solutions and indicate directions of future research and innovation.

  Please note: This specail session is for papers with a strong computational, optimization or ai theme relating to railway technology.

• CC-S2: Structural Response to Dynamic Loadings: Modelling, Analysis and Mitigation
  organised by:
  Pierfrancesco Cacciola,Fuzhou University, China
  Alessandro Contento, Fuzhou University, China
  Gian Felice Giaccu, University of Sassari, Italy
  Bruno Briseghella, Fuzhou University, China
  
  Dynamic loadings inducing structural vibrations pose a challenge to researchers and practitioners in various branches of engineering. Unpredicted vibrations can deteriorate or ultimately even lead to the failure of structural components or the collapse of entire structures. In this regard, it is imperative to model input and structures accounting for inherent uncertainties and/or nonlinearities for the reliable assessment of the structural integrity and the evaluation of the probability of failure. On the other hand, the detailed modelling still presents computational challenges hindering the accuracy of the structural analysis and the reliability of the mitigation strategies. The aim of this special session is to bring together expertise from different disciplines and to share approaches and novel developments in the wide field of structural dynamics. Contributions addressing modelling, analysis or mitigation of structural vibrations are particularly welcomed.
• CC-S3: Advances in Computational Design for Metamaterials, Composites, and Multifunctional Lattice
  organised by:
  Liang Xia, Huazhong University of Science and Technology, China
  Liang Meng, Northwestern Polytechnical University, China
  Jie Liu, Yanshan University, China
  Yuliang Hou, Zhengzhou University, China
  
  This session focuses on computational design methods for metamaterials, composite structures, and lattice architectures with tailored mechanical, acoustic, and dynamic functionalities. Key themes include:
  1) Topology optimization frameworks for multiscale metamaterials (acoustic damping, vibration isolation, energy absorption);
  2) Computational inverse design of anisotropic composites and graded lattice geometries;
  3) Multiscale modeling bridging microstructural topology optimization to macroscale performance in hierarchical structures;
  4) Manufacturing-integrated computational strategies for 3D-printed lattices and programmable metamaterials;
  5) Validation through nonlinear computational mechanics and experimental benchmarking.

  Emphasis is placed on method development for lightweight, adaptive, and multifunctional structures across aerospace, robotics, and smart infrastructure applications.

• CC-S4: to be announced
  
• CC-S5: Advances in Finite, Boundary and Discrete Element Methods
  organised by:
  Jaroslav Kruis, Czech Technical University in Prague, Czech Republic
  
  With the increasing power of computers, more and more complex problems are emerging, especially in the case of coupled multiphysics problems. Their solution not only requires a large number of arithmetic operations, but the existing tools in the finite element method, boundary element method and discrete element method are not sufficient. It is necessary to construct new elements, improve numerical integration methods and solve problems related to complex material models. The growing number of degrees of freedom requires efficient tools for solving systems of linear or nonlinear algebraic equations and for calculating eigenvalues and eigenvectors.
• CC-S6: Analytical and Numerical Developments in Fracture Mechanics of Classical and Non-classical Materials
  organised by:
  Meral Tuna, University of Bologna, Italy
  Nicholas Fantuzzi, University of Bologna, Italy
  Marco Pingaro, Sapienza University of Rome, Italy
  
  Since defects having the potential of comprising the overall structural performance, this session focuses on discussing the phenomenon of fracture mechanics in classical and non-classical (complex) engineering materials by bringing researchers and experts from theoretical and computational fields.
• CC-S7: Advances in the Numerical Approximation of Multiphysics Problems
  organised by:
  Lucia Gastaldi, University of Brescia, Italy
  Fabio Credali, King Abdullah University of Science and Technology, Saudi Arabia
  
  The mathematical description of multiphysics problems (e.g. fluid-structure interactions, multiphase flows, thermo-mechanical problems) usually involves partial differential equations of different types or with discontinuous coefficients, so that the computational domain is decomposed into several regions, which may evolve in time. Thus, the finite element discretization of such problems requires not only an accurate representation of the geometry but also new approaches in order to improve accuracy of the solution without requiring additional computational effort.

  We invite researchers working in this field to present their latest results and discuss the related challenges and future perspectives. We encourage contributions coming from all kinds of applications as topics of interest include, in a broad sense, mathematical analysis, error analysis, mesh adaptivity, integration strategies, geometric representation, efficient algorithms, and parallel solvers.

• CC-S8: Advances in Optimization and Automated Design of Engineering Structures
  organised by:
  Professor Alberto Martins, Department of Civil Engineering, University of Coimbra, Portugal
  Professor Luís Simões, Department of Civil Engineering, University of Coimbra, Portugal
  Professor János Lógó, Department of Structural Mechanics, Budapest University of Technology and Economics, Hungary Professor Matteo Bruggi, Department of Civil and Environmental Engineering, Politecnico di Milano, Milano, Italy
  
  This session focuses on recent advances in optimization-based approaches towards an automated design of civil engineering structures. These approaches are particularly suited to assist in the design aiming at economic and sustainable solutions. Utilizing the increasing computational resources, it is relevant to promote the implementation of these techniques in design practice, thus contributing to the automation of design procedures. This session aims to gather expertise on the topic and to, simultaneously, promote the exchange of knowledge and discussions on future developments. Contributions on the use of optimization algorithms in the assessment and retrofitting of existing structures are also welcomed.
• CC-S9: Coupled Problems Involving Cementitious Materials at all Scales
  organised by:
  B. Pomaro, Assoc. Professor G. Mazzucco and Professor C. Majorana
  Department of Civil, Environmental and Architectural Engineering, University of Padova, Italy
  
  Coupled problems are prevalent in computational mechanics applied to building materials. These may involve sophisticated mechanical constitutive formulations (e.g., elasto-plasto-damage, visco-plasto-damage) or multiphysics coupling (e.g., thermo-mechanics, thermo-hydro-mechanics, chemo-hydro-mechanics). More unconventional applications, such as those involving radiation, species diffusion, or electromagnetic fields, also pose significant computational challenges.

  Depending on the specific application, optimal numerical strategies—ranging from the Finite Element Method (FEM) and Discrete Element Method (DEM) to (semi-) analytical approaches, machine learning techniques, molecular dynamics, and stochastic methods—can enhance accuracy and predictive capabilities.

  The objective of this Special Session is to bring together researchers, scientists, and experts in computational mechanics applied to cementitious materials at both the material and structural scales. We invite novel contributions that address the most pressing numerical challenges in an efficient and innovative manner.

• CC-S10: Advanced Analysis of Steel and Steel-Concrete Composite Structures
  organised by:
  Professor J.G. Santos da Silva, State University of Rio de Janeiro, UERJ, Brazil
  Professor L.F. Costa Neves, University of Coimbra, UC, Portugal
  
  The aim of this special session is to summarize the progress in theoretical, computational and experimental research in the field of structural analysis of steel and steel-concrete composite structures. Special emphasis is always given to new concepts and procedures concerning the computational modelling, structural analysis and design of steel and steel-concrete composite structures. Topics of interest include static and dynamic structural analysis, fatigue analysis, seismic analysis, vibration control, stability design, structural connections, cold-formed members, bridges and footbridges, fire engineering, trusses, tower and masts, linear and nonlinear structural dynamics and soil-structure interaction. Papers of all research areas related to theoretical, numerical and experimental aspects concerning the computational modelling, analysis and design of steel and steel-concrete composite structures are very welcome.
• CC-S11: Computational and Stochastic Approaches for Structural Performance and Reliability
  organised by:
  Asst Professor Ioannis P. Mitseas, School of Civil Engineering, University of Leeds, UK
  Professor Michael Beer, Institute for Risk and Reliability, Leibniz Universität Hannover, Germany
  Professor Antonina Pirrotta, Department of Civil, Environmental & Materials Engineering, University of Palermo, Italy
  Professor Jianbing Chen, State Key Laboratory of Disaster Reduction in Civil Engineering & College of Civil, Tongji, University, China
  
  Structural systems are inherently subjected to uncertainties stemming from material properties, loading conditions, environmental influences, and modeling assumptions. The integration of stochastic methods and computational techniques is crucial for accurately assessing structural performance and reliability, ensuring robust and resilient engineering designs under uncertain conditions.

  This Mini-Symposium aims to bring together experts in stochastic dynamics, uncertainty quantification, computational mechanics, and performance-based engineering to discuss novel methodologies and emerging trends. Topics of interest include, but are not limited to: Stochastic modeling and uncertainty propagation in structural systems, Computational methods for nonlinear and stochastic dynamics, Advanced Monte Carlo simulation techniques and surrogate modelling, Fractional and stochastic calculus approaches for structural behavior analysis, Machine learning and data-driven approaches for uncertainty quantification, Joint time- frequency analysis, sparse representations, and signal processing in structural response assessment, Probabilistic reliability and risk assessment frameworks, Reduced-order modeling and stochastic model reduction techniques.

  By fostering an interdisciplinary discussion, this session seeks to bridge theoretical research and practical applications, offering new insights into the computational treatment of uncertainty in performance-based structural engineering. Contributions from both fundamental research and applied engineering perspectives are encouraged.

• CC-S12: Advances in Nonlocal Computational Modelling
  organised by:
  Francisco Vieira, Instituto Superior Técnico, University of Lisbon, Portugal
  Professor Aurélio Araújo, Instituto Superior Técnico, University of Lisbon, Portugal
  
  The purpose of this session is to stimulate the exchange of ideas in nonlocal modelling and related research topics. In recent years, it has been proven that nonlocal models provide a reliable alternative to classical local descriptions in demanding problems such as fracture or involving phase changes. Also, as these models introduce a length scale they can be applied to a varied range of scales. For instance, peridynamics has been increasingly applied in problems involving damage and crack propagation in solids and structures. Topics include, but are not limited to, peridynamics, multiphysics and multiscale nonlocal models, nonlocal discretization methods, coupling between local and nonlocal model, nonlocal fracture models and engineering applications with nonlocal models.