Simplified Assessment of the Resilience Capacity of Urban Areas affected by Microtunneling Activities

Authors

Pineda, Jorge Arturo

Larrañaga, Sherley Catheryne

Abstract

Recently, in cities of developing countries, trenchless excavation technology for the underground space development projects has been incorporated in the construction stages to cause the least impact on the stability of the elements of the urban environment, favoring the mitigation of risk damage to elements already built on the surface in the intervention areas. However, some cases of irreversible and accelerated deterioration of consolidated urban areas caused by deformations induced on the surface during tunneling have shown the need to address the risk assessment that trenchless technology entails and the determination of the resilience capacity that they possess. the areas to intervene to face the risk caused and recover from the consequences. This article presents an approach to the simplified evaluation of the resilience of urban areas in the face of the execution of low coverage tunnels using trenchless technology based on multi-criteria interdisciplinary analysis associated with the definition of the aspects of robustness, redundancy, resourcefulness, and capacity of recovery implicit in the classical definition of resilience. The proposed criteria were evaluated and weighted from the assignment of values on the scale from 0 to 1, allowing a simplified quantitative evaluation of the resilience capacity at moments before and during construction for an application case in a complex intersection of the first Bogota metro line in Colombia. The proposed methodology constitutes an innovative approach as a complementary tool for risk assessment on urban environments and decision making for the sustainable implementation of trenchless technology.