Efecto del grado de capacidad de disipación de energía sísmica seleccionado en las cantidades de obra de muros de concreto reforzado

Benjumea, José; Monroy, Fredy Saúl Sotelo; Melo, Camilo Eduardo Celis; Cho, Gustavo Chío

doi:10.14483/udistrital.jour.tecnura.2016.4.a01

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…Con el fin de reducir las pérdidas humanas y materiales ante un evento sísmico, el reglamento de construcción sismorresistente establece requisitos mínimos de diseño para elementos estructurales en función del sistema estructural, los materiales usados, el desempeño sísmico esperado de la edificación y el nivel de amenaza sísmica. [19] El proyecto sismorresistente convencional se basa en los conceptos de ductilidad, redundancia estructural y capacidad de los elementos que forman la estructura primaria de la construcción para disipar energía mediante deformaciones plásticas. Sin embargo, esto permite deformaciones plásticas en los elementos primarios de la estructura, implica admitir daños estructurales después del terremoto cuya reparación puede ser muy costosa, y conducir a la demolición del edificio.…”

Section: Introductionunclassified

Analysis of the Influence of the Use of Seismic Dissipators in Buildings

Neyra Torres,

Campos Vasquez,

Manturano Chipana

et al. 2023

Proceedings of the 21th LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2023): “Leaders

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Currently in the market there are diverse types of energy dissipation devices that are used both for installation in new structures, and in the reinforcement of some that are at risk of causing an accident caused by a large earthquake. The article that will be presented below has the purpose of analyzing buildings with energy dissipators, the response they generate in the face of a large-magnitude earthquake and the recommendations on seismic design to develop structural reinforcement strategies for old and damaged buildings that need it. The first part deals with the types of energy devices that are most used and efficient on the market. Subsequently, the application and performance for the design of buildings with dissipators are mentioned, in addition to the improvement obtained by placing it in deteriorated structures or on the verge of collapsing. On the other hand, the purpose of the research is to generate interest so that more people know about energy dissipators and how they can minimize damage to buildings and deteriorated structures in the event of an earthquake.

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Section: Introductionunclassified

Analysis of the Influence of the Use of Seismic Dissipators in Buildings

Neyra Torres,

Campos Vasquez,

Manturano Chipana

et al. 2023

Proceedings of the 21th LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2023): “Leaders

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Comparative study of costs for reinforced concrete portico buildings designed with different degrees of seismic performance

Cáceres

Márquez

Rojas

2019

J. Phys.: Conf. Ser.

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The Colombian regulation of earthquake resistant construction NSR-10 establishes that the seismic-resistant capacity of a building must be classified according to three degrees of energy dissipation: Special energy dissipation, moderate energy dissipation and minimum energy dissipation. The dimensioning and detailing requirements for structural elements that are demanded according to each grade depend on the need to withstand earthquakes in the inelastic range according to the seismic hazard zone in which the structure is located. This work presents an analysis of the incidence of the requirements of each degree of energy dissipation on the costs of multi-storey building structures. For this, the structural analysis and design of four building configurations (2, 3, 4 and 5 floors) for each minimum energy dissipation, moderate energy dissipation, and special energy dissipation grade has been carried out and the quantities of work with their respective total cost have been determined. As a general conclusion, it can be stated that the cost of building a structure that has special energy dissipation capacity for a given building can be twice that of a structure that has minimum energy dissipation capacity for the same building. On the other hand, it was observed that in order to guarantee a rigidity comparable to that of the other models analyzed, the system of reinforced concrete portal resistant to moments for DES level requires large column dimensions in the case of buildings of four or more floors, which suggests that other types of more efficient elements should be used in the vertical seismic resistance system.

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Accumulation of cadmium and lead in macroinvertebrates in relation to sediment concentration and the dynamics of environmental parameters in a tropical estuary of the Colombian Pacific

Erazo-Enríquez,

Duque,

Cogua

2023

Preprint

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Estuaries provide a wide variety of ecosystem services; therefore, they are densely populated coastal regions with high activity and vulnerable to contaminants from natural and anthropogenic sources. The estuary of Buenaventura Bay is environmentally affected by liquid and solid wastes of anthropogenic origin, which arrive through the discharges of the main rivers of the region, as well as by gold mining and port activities, generating problems of environmental stress and contamination. For this reason, the main objective of the study was to determine how the environmental dynamics of the bay influences the processes of contamination and accumulation of heavy metals, cadmium (Cd) and lead (Pb), in sediments and in the muscle tissue of macroinvertebrates. For this purpose, macroinvertebrate samples were collected in two areas of Buenaventura Bay during three different climatic periods in 2018. In addition, sediment samples were collected for granulometric and organic matter data, and physicochemical water data were recorded. Cd and Pb concentrations in sediments and muscle tissue of four species were quantified. The concentrations of Cd and Pb in the sediments were undetectable and therefore did not exceed the maximum permissible values for marine sediment quality (Cd 0.6 mg/kg and Pb 35 mg/kg, TEL values, threshold effect level). The low levels of Cd and Pb in the sediments are due to their granulometric composition: high content of fine sand and low percentage of silt, clay and organic matter, conditions that do not favor the accumulation of metals in this matrix. The concentrations of Cd and Pb in the muscle of the organisms did not exceed the limit established for organisms for human consumption (crustaceans Cd 0.5 mg/kg and Pb 0.5 mg/kg; cephalopods Cd 1.0 mg/kg and Pb 0.3 mg/kg, fresh weight), indicating the absence of serious contamination by these two metals. It was found that the climatic seasons, as well as the peculiarities of each zone of the estuary and their interaction, influenced the dynamics of the physicochemical variables of the water and sediments of the bay. Climatic seasons also influenced the accumulation of Cd in the muscle of crustacean species, being higher under conditions of lower precipitation (dry and transitional seasons). Spatially, the outer zone of the bay showed a trend of higher Cd concentration in crustacean muscle. The environmental variables that best explained the Cd concentrations in the muscle of the four species were: temperature, salinity, and mean sand.

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Efecto del grado de capacidad de disipación de energía sísmica seleccionado en las cantidades de obra de muros de concreto reforzado

Cited by 4 publications

References 3 publications

Analysis of the Influence of the Use of Seismic Dissipators in Buildings

Analysis of the Influence of the Use of Seismic Dissipators in Buildings

Comparative study of costs for reinforced concrete portico buildings designed with different degrees of seismic performance

Accumulation of cadmium and lead in macroinvertebrates in relation to sediment concentration and the dynamics of environmental parameters in a tropical estuary of the Colombian Pacific

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