Diseño de estructura de soporte de correa transportadora de uso minero mediante NCH 2369.OF2025
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Date
2026
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Concepción
Abstract
Los terremotos forman parte de la historia de Chile. La continua exposición de la sociedad chilena a estos eventos ha moldeado aspectos fundamentales de ésta. Sin duda, un ámbito donde la realidad símica nacional ha tenido gran incidencia es en el quehacer de la industria nacional. En Chile el diseño sísmico en la industria siguió en un principio los pasos de países con realidades similares y mayor desarrollo en el tema. Surge así la NCh2369: “Diseño sísmico de estructuras e instalaciones industriales”, cuya primera versión oficial se publica en 2003, los objetivos de desempeño sísmico de esta norma se alinean con dos principios clave: La protección de la vida y la continuidad operacional y, su filosofía de diseño se basa en proveer sobrerresistencia y ductilidad moderada. La ocurrencia de grandes sismos desde su haber ha servido para calibrar sus disposiciones y la idoneidad de éstas respecto de sus objetivos declarados. En 2023 entra en vigencia la actualización de dicha norma tras un proceso de revisión de casi una década. Ahora, la NCh2369.Of2025 oficializada en marzo de 2026 actual mantiene los fundamentos de la filosofía de diseño y el enfoque en los objetivos de su versión previa, avocándose a reflejar el estado del arte actual de esta disciplina. Este trabajo tiene por objetivo estudiar las implicancias de la actualización de las disposiciones de la norma en el diseño de una estructura industrial de acero existente, mediante el desarrollo en el software SAP2000 de modelos de la estructura cuyos atributos atingentes se analizan comparativamente. Se contempla resultado de la replicación del diseño original o “as-built” y el modelo actualizado, que corresponde a la modificación de diseño original a conformidad de la NCh2369 vigente. Los modelos se contrastan permitiendo, a priori, evaluar las implicaciones de la actualización normativa en el diseño. Este análisis permite caracterizar los efectos de la modificación de la norma y la coherencia de la norma vigente con los objetivos de desempeño sísmico y filosofía de diseño que planteados en ella
Earthquakes are an integral part of Chile’s history. The continuous exposure of Chilean society to these events has shaped fundamental aspects of it. Undoubtedly, one area where the country’s seismic reality has had significant impact is in the operations of national industry. In Chile, seismic design for industrial facilities initially followed the steps of countries with similar realities and more advanced development in this field. This led to the creation of the chilean code NCh2369: “Diseño sísmico de estructuras e instalaciones industriales”, whose first official version was published in 2003. The seismic performance objectives of this standard align with two key principles: life safety and operational continuity. Its design philosophy is based on providing overstrength and moderate ductility. The occurrence of major earthquakes since then has served to calibrate its provisions and their suitability in relation to the stated objectives. In 2023, an updated version of this standard came into effect after an almost decade-long review process. The current NCh2369.Of2025 maintains the foundational design philosophy and focus on the objectives of its previous version, aiming to reflect the current state of the art in this discipline. This study aims to analyze the implications of the updated standard’s provisions on the design of an existing industrial steel structure, through the development of a set of structural models in SAP2000. These models are comparatively analyzed based on relevant attributes. It includes the model which replicates the original or 'as-built' design and the updated model, which modifies the original design to comply with the current version of NCh2369. The models undergo a comparative analysis that allows for a preliminary assessment of the implications of the code update on structural design. This analysis characterize the effects of the code’s revision and the consistency of the current version with its stated seismic performance objectives and design philosophy. The structure under consideration corresponds to the support system of a mining conveyor belt. Its original design was completed in 2002, prior to the first version of NCh2369.
Earthquakes are an integral part of Chile’s history. The continuous exposure of Chilean society to these events has shaped fundamental aspects of it. Undoubtedly, one area where the country’s seismic reality has had significant impact is in the operations of national industry. In Chile, seismic design for industrial facilities initially followed the steps of countries with similar realities and more advanced development in this field. This led to the creation of the chilean code NCh2369: “Diseño sísmico de estructuras e instalaciones industriales”, whose first official version was published in 2003. The seismic performance objectives of this standard align with two key principles: life safety and operational continuity. Its design philosophy is based on providing overstrength and moderate ductility. The occurrence of major earthquakes since then has served to calibrate its provisions and their suitability in relation to the stated objectives. In 2023, an updated version of this standard came into effect after an almost decade-long review process. The current NCh2369.Of2025 maintains the foundational design philosophy and focus on the objectives of its previous version, aiming to reflect the current state of the art in this discipline. This study aims to analyze the implications of the updated standard’s provisions on the design of an existing industrial steel structure, through the development of a set of structural models in SAP2000. These models are comparatively analyzed based on relevant attributes. It includes the model which replicates the original or 'as-built' design and the updated model, which modifies the original design to comply with the current version of NCh2369. The models undergo a comparative analysis that allows for a preliminary assessment of the implications of the code update on structural design. This analysis characterize the effects of the code’s revision and the consistency of the current version with its stated seismic performance objectives and design philosophy. The structure under consideration corresponds to the support system of a mining conveyor belt. Its original design was completed in 2002, prior to the first version of NCh2369.
Description
Tesis presentada para optar al título de Ingeniero/a Civil.
Keywords
Diseño de estructuras, Estructuras de acero, Terremotos