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Infrastructures, Volume 10, Issue 8

August 2025 - 31 articles

Cover Story: This paper presents a formulation for the dynamic analysis of dam–reservoir–foundation systems, based on a true coupled approach. A state-space method is used for modal analysis, resulting in non-stationary vibration modes. A time-stepping method is applied for seismic analysis; nonlinear behavior is simulated by combining a constitutive joint model and a concrete damage model with tension and compression damage variables. The case study is the Cahora Bassa arch dam, instrumentalized in 2010 with a continuous dynamic monitoring system. The natural frequencies and mode shapes, obtained from ambient vibrations recorded over the years, are analyzed and compared to numerical results for different reservoir levels. The nonlinear seismic response is simulated to evaluate the structural effects due to vertical joint movements and concrete damage. View this paper
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Articles (31)

  • Article
  • Open Access
1 Citations
505 Views
19 Pages

Icing on eight-bundled conductors can significantly alter their aerodynamic behavior, potentially leading to structural instabilities such as galloping. This study employed wind tunnel experiments and numerical simulations to analyze the aerodynamic...

  • Article
  • Open Access
359 Views
31 Pages

The aim of this paper is to tailor the geometry and material parameters of a three-layer railway track model to achieve favorable properties for the circulation of high-speed trains at very high velocities. The three layers imply that the model shoul...

  • Article
  • Open Access
797 Views
23 Pages

To address the issues of low permeability, clogging susceptibility, and insufficient circumferential bearing capacity of traditional drainage blind pipes behind tunnel linings in water-rich areas, this study proposes a novel curved-mesh circumferenti...

  • Technical Note
  • Open Access
848 Views
22 Pages

Effects of the Aggregate Shape and Petrography on the Durability of Stone Mastic Asphalt

  • Alain Stony Bile Sondey,
  • Vincent Aaron Maleriado,
  • Helga Ros Fridgeirsdottir,
  • Damian Serwin,
  • Carl Christian Thodesen and
  • Diego Maria Barbieri

Compared to traditional dense asphalt concrete mixtures, stone mastic asphalt (SMA) generally offers superior performance in terms of its mechanical resistance and extended pavement lifespan. Focusing on the Norwegian scenario, this laboratory-based...

  • Article
  • Open Access
560 Views
18 Pages

To study the optimization of construction parameters and schemes for complex connecting tunnels in extra-long highway tunnels in granite strata, the research team, relying on the construction project of the complex connecting tunnel between the Xiaol...

  • Article
  • Open Access
1 Citations
721 Views
18 Pages

Study on Harmless Treatment and Performance of Phosphogypsum-Based Inorganic Cementing Material

  • Hui Xiang,
  • Chenyang Dong,
  • Hao Wu,
  • Xiaodi Hu,
  • Bo Gao,
  • Zhiwei Fan,
  • Jiuming Wan,
  • Yuan Ma and
  • Hongtao Guan

Phosphogypsum, a by-product of phosphate fertilizer production, was predominantly used as a supplementary additive in recycled construction materials. However, there are few detailed studies on utilizing phosphogypsum as the primary component in inor...

  • Article
  • Open Access
1 Citations
711 Views
21 Pages

Aging railroad bridges present complex challenges due to advancing deterioration and outdated design assumptions. This study develops a comprehensive analytical approach for assessing an aging steel truss railroad bridge through finite element (FE) m...

  • Article
  • Open Access
598 Views
24 Pages

Post-tensioned (PT) reinforced concrete bridges are particularly vulnerable structures, as the deterioration of internal tendons is often difficult to detect using conventional inspection methods or visual assessments. This paper introduces a practic...

  • Article
  • Open Access
694 Views
30 Pages

This paper presents a formulation for the dynamic analysis of dam–reservoir–foundation systems, employing a coupled finite element model that integrates displacements and reservoir pressures. An innovative coupled approach, without separa...

  • Article
  • Open Access
2 Citations
1,085 Views
26 Pages

Thermal Degradation and Microstructural Evolution of Geopolymer-Based UHPC with Silica Fume and Quartz Powder

  • Raghda A. Elhefny,
  • Mohamed Abdellatief,
  • Walid E. Elemam and
  • Ahmed M. Tahwia

The durability and fire resilience of concrete structures are increasingly critical in modern construction, particularly under elevated-temperature exposure. With this context, the current study explores the thermal and microstructural characteristic...

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Infrastructures - ISSN 2412-3811