April 1, 2022

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Felipe Uribe Coauthored a Paper on Concrete Bracings and Ground Movements in Tunnelling and Underground Space Technology

Felipe Uribe, Ph.D., (Georgia) coauthored a paper titled "Construction-Induced Effects in a Cofferdam Excavation using Hypoplasticity and Shotcrete Models" that was published in Tunnelling and Underground Space Technology, Volume 124 to be published in June 2022.

Felipe was the lead author, and coauthors were Luis G. Arboleda-Monsalve, D. Alejandro Aguirre-Molina, and David G. Zapata-Medina.

Felipe Uribe is a Senior Geostructural Engineer based in Georgia focused on performance-based excavation designs, deep excavations in soft soils, slope stability, settlement analyses, and excavation-induced damage in urban infrastructure. With experience in soil-structure interaction, retained structures, and braced excavation, he designs and analyzes geostructures, performs structural analyses, and conducts complex numerical modeling in geotechnical and structural engineering.

Tunnelling and Underground Space Technology publishes original research and case studies on the tunnelling technology, the uses of underground space, and trenchless technology. The journal focuses on the interdisciplinary aspects of planning, creating, and regulating underground spaces, including the design, modeling, construction, maintenance and rehabilitation of tunnels and other structures; the planning, development, and operation of underground spaces and environments; and the installation and rehabilitation of underground pipelines, ducts, and cables.

Abstract

Construction-induced effects of concrete bracings on excavation-induced ground movements in an urban cofferdam are investigated using advanced constitutive models. The hypoplasticity model for clays and the shotcrete model for concrete were used to reproduce the performance of a bottom-up cofferdam excavation braced with seven levels of concrete ring beams. Construction effects associated with rapid cycles of soil removal and lateral bracing, low temperatures during concrete curing and installation, and concrete time-dependent effects (i.e., shrinkage, creep, and aging) are studied parametrically in terms of excavation-induced lateral wall movements. The computed results from the numerical simulations matched well-field performance measurements. Concrete material time-dependent effects represented approximately 30 percent of the maximum lateral wall movements; aging was the predominant effect. Concrete curing and ring beam installation effects represented 25 percent of the computed maximum lateral wall deformations. Excavation designs ignoring the proposed effects would potentially cause damage to nearby infrastructure.

More Information

Learn more about the article: https://authors.elsevier.com/a/1ens939eM4IChW
Learn more about the journal: https://www.sciencedirect.com/journal/tunnelling-and-underground-space-technology
For consultation regarding geostructural engineering, contact Felipe at This email address is being protected from spambots. You need JavaScript enabled to view it..
Learn more about Felipe: https://www.linkedin.com/in/afuribeh/