Abstract:
Brazil has faced frequent and severe weather-related natural hazards in recent years. Events that were once considered unusual or unprecedented have affected many regions across the country, from the North to the South. These events include heatwaves, heavy rains, floods, and droughts. The Amazon Region, one of the most biodiverse ecosystems in the world, has been significantly impacted by these phenomena, experiencing historic floods and droughts in its major river systems in 2023. Alongside these environmental changes, numerous infrastructural issues have emerged, particularly affecting ports and bridges, some of which have partially or completely collapsed. This situation has led to increased research into soil behavior, especially regarding a phenomenon known as Fallen Lands. This term refers to the processes of riverbank erosion and the subsequent transport of materials, making the area more vulnerable to landslides. Researchers are focusing on how these factors influence the stability of riverbanks and nearby structures, as well as the design and construction characteristics of both existing and newly planned projects. In this scenario, this article examines the impacts of climate change on the worsening and intensification of the Fallen Lands phenomenon, as well as its effects on the stability and safety of infrastructure in river flood areas. Recent cases of bridge and port collapses highlight key factors that contributed to these failures during their service life. It is essential to recognize that certain issues may be directly related to project design and the construction methods used. The article provides technical guidelines for the design of future civil construction projects in this region, focusing particularly on geological-geotechnical and hydrodynamic aspects. These guidelines aim to create more resilient urban infrastructure with a reduced likelihood of failure and improved safety for users.
Referência:
CAMPOS, Gisleine Coelho de; SANTOS, Felipe Schaefer; GOMES, Claudio Luiz Ridente. Guidelines for resiliente infrastructures in Amazon Region, Brazil. In: CONFERENCE ON SOIL MECHANICS AND GEOTECHNICAL ENGINEERINGM 21., 2026, Viena, Austria. Proceedings… 6 p.
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