Georeferenced monitoring of displacements of gabion walls

Abstract

Gravity retaining structures in gabion walls were built in the outdoor area of a shopping centre in the city of Manaus, State of Amazonas, Brazil. When the project was about half-way completed, horizontal displacements began to show excessive ‘bulging’, causing the stoppage of construction. Later studies revealed that the original geometric sections did not meet the requirements of internal, external and global geotechnical stability. Hence, it was necessary to study some alternatives to circumvent the problem. The fastest and most economical alternative proved to be increasing the cross-section of the walls, through the excavation of the backfill. The reconstruction of the walls and subsequent backfill compaction were performed step by step. The new cross-sections of the walls improved their theoretical and constructive stability, and this was proven by subsequent monitoring of horizontal and vertical displacements. It was found that the largest horizontal and vertical displacements of the gabion wall were about 20 mm and 11 mm, respectively.

Evaluating a Fit-For-Purpose Integrated Service-Oriented Land and Climate Change Information System for Mountain Community Adaptation

“…Open Street Map is using satellite navigation system in providing geospatial data [45]. Gabion is an iron-made basket that is filled with sand and soil to protect and to stabilize slopes from erosion [44]. Bocha communities installed gabion walls as a climate adaptation option to protect roads and buildings from landslides.…”

Editorial

“…In the paper by de Souza Campelo et al (2018), a detailed description is given of a gravity retaining structure project based on gabion walls built in Brazil, in which excessive horizontal displacement occurred during construction. The authors describe how the problem was tackled, evaluating a number of alternatives and finally opting for a wall cross-section increase.…”

Climate adaptation services

“…This figure shows how the user overlaid an adaptation option (gabion) from the climate-adaptation layer with the municipality layer. Gabion is an iron-made basket that is filled with sand and soil to protect and to stabilize slopes from erosion (Campelo et al, 2018).…”