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https://purl.org/pe-repo/ocde/ford#2.01.01
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1
artículo
Publicado 2019
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This paper initially describes aspects of the modeling of structures equipped with energy dissipators Shear Link Bozzo (SLB) and develops two iterative design procedures to select these devices. This methodology is applied to a precast 5-story reinforced concrete building. The SLB energy dissipation devices are initially stiff, but ductile with a range of yielding forces from 36 kN to 900 kN characterized by 52 + 52 standard devices. Moreover, these devices can be combined in parallel giving a very wide range of possibilities for selection and corresponding structural response. Therefore, to simplify its automatic selection, this article presents two procedures: (1) direct iteration and (2) inverse or fixed force iteration. Both procedures were implemented in an automatic application or “plugin” for the ETABS program that automates its selection for a specific structural system or ar...
2
artículo
Publicado 2012
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The objective of this work is to provide a reliable numerical model using the finite element method (FEM) for the dynamic analysis of reinforced concrete (RC) structures. For this purpose, a computer program based on a strain-rate sensitive elasto-plastic theory is developed using 3D brick finite elements. The implicit Newmark scheme with predictor and corrector phases is used for time integration of the nonlinear system of equations. In addition, the steel reinforcement is considered to be smeared and perfectly adhered to concrete and represented by membrane finite elements. Two benchmark examples are analyzed with the present numerical model and results are compared with those obtained by other authors. The present numerical model is able to reproduce the path failure, collapse loads and failure mechanism within an acceptable level of accuracy.
3
artículo
Publicado 2022
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Lima, the capital of Peru, has not suffered from a great earthquake since 1746, making this a prone Mw 8.8 earthquake area according to seismological studies. In this context, seismic structural health monitoring presents an opportunity to assess rapidly buildings after a great earthquake and protect inhabitant from those buildings with high risk of collapse due to aftershocks. A basic seismic structural health monitoring arrangement of a fifteenth-floor residential building is presented using a low-cost sensor called Raspberry Shake 4D. The implemented sensor incorporates both a vertical velocity geophone and three orthogonally positioned microelectromechanical systems accelerometers. The building is a reinforced concrete shear walls structure located in Comas, north of Lima. More than thirty seismic events have been recorded, including the Mw 8.0 Lagunas earthquake (05/26/2019) and the...
4
artículo
Publicado 2021
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In this work, we propose the nonmonotone projected spectral gradient method to solve the problem of minimizing compliance of a static structure, classic problem in topology optimization. The present method has proof of global convergence and is easy to implement. The performance of the proposed method is studied through numerical examples in two dimensions.
5
tesis de grado
La presente investigación trata sobre “El análisis estructural de la Iglesia San Pedro de Carabayllo” considerada el monumento histórico más antiguo de Lima Norte. Este trabajo se desarrolló con el objetivo de determinar su análisis estructural; utilizando un modelo matemático de acuerdo al método de elementos finitos, determinando los valores numéricos de los esfuerzos y sus desplazamientos. Esta tesis es una investigación aplicada, cuantitativa de diseño descriptivo y de tipo explicativo, no experimental, transversal y prospectivo. Se concluye que la estructura no cumple con los desplazamientos mínimos según norma sismo resistente y que falla al someterla a cargas de sismo, planteándonos de esta manera alternativas de reforzamiento para la estructura; evitando así afectar la autenticad de los materiales de la estructura. This research is about “Structural analysis ...
6
tesis de maestría
Presenta aplicaciones de optimización topológica para problemas de valor propio, como frecuencia natural o carga de pandeo linealizada utilizando elementos finitos-poligonales en dominios bidimensionales. En este trabajo se presentan algunos aplicaciones de optimización de topología para problemas de valores propios donde el objetivo principal es maximizar un valor propio especificado, como una frecuencia natural o una carga de pandeo linealizada utilizando elementos finitos poligonales en dominios bidimensionales arbitrarios. La idea es obtener la distribución óptima del material para maximizar la frecuencia natural fundamental (por ejemplo, para mantenerla alejada de una frecuencia de excitación externa o para maximizar la frecuencia más baja) o maximizar la carga crítica de pandeo (por ejemplo, para asegurar un mayor nivel de estabilidad de las estructuras) sometiendo a una r...
7
tesis de grado
Publicado 2024
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En los elementos estructurales, hechos a base de concreto, surge la necesidad de mejorar la resistencia, para lo cual, el fenómeno de curado es un factor de gran importancia, y mientras más opciones se tengan, será mucho mejor. El objetivo del presente trabajo de investigación , es d eterminar el mejoramiento de las propiedades de un concreto 210 kg/cm2 mediante los diferentes tipos de curados para elementos estructurales . Se empleó el método científico, de tipo aplicado, con un nivel explicativo y con un diseño cuasi - experimental. Se obtuvo como resultados de carbonatación a los 28 días : P ara el curado con agua de rio de 0.000 mm, por inmersión de 0.001 mm, para el curado por aspersión de 0.50 mm, para el curado con aceite de linaza de 2.45 mm, co n curado químico Chema de 2.625 mm y sin curado 4.063 mm; para los ensayos de resistencia a compresión , el concreto sin c...
8
artículo
Publicado 2012
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The objective of this work is to provide a reliable numerical model using the finite element method (FEM) for the dynamic analysis of reinforced concrete (RC) structures. For this purpose, a computer program based on a strain-rate sensitive elasto-plastic theory is developed using 3D brick finite elements. The implicit Newmark scheme with predictor and corrector phases is used for time integration of the nonlinear system of equations. In addition, the steel reinforcement is considered to be smeared and perfectly adhered to concrete and represented by membrane finite elements. Two benchmark examples are analyzed with the present numerical model and results are compared with those obtained by other authors. The present numerical model is able to reproduce the path failure, collapse loads and failure mechanism within an acceptable level of accuracy.
9
tesis de maestría
Publicado 2013
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This research work studies the fundamentals of the Hybrid Frequency-Time Domain (HFTD) method for dynamic analysis of structures, applied to the seismic analysis of dam-reservoir interaction systems. The theoretical consistency and accuracy of the HFTD method, based on the frequency domain Fourier analysis, is demonstrated through all the parts of the thesis, but particularly in Chapter 5 for linear and highly non-linear single degree of freedom (SDOF) models subject to several types of loading, and in Chapter 7 for a 2D dam-reservoir interaction finite element model subject to an earthquake ground acceleration loading. On the other hand, a Finite Element Method (FEM) formulation of dam-reservoir interaction problems is presented, being demonstrated the frequency-dependence nature of this type of systems. The fluid compressibility and boundary conditions of the reservoir are analytically...
10
artículo
This study suggests an interdisciplinary model for the analysis of school argumentation that applies the Theory of Argumentation to the educational field. For the reconstruction of the school argumentative discourse, two theoretical tools have been used: Lo Cascio’s (1998) textual linguistics —useful in order to discover the argumentative framework— and the new rhetoric of Perelman and Olbrechts-Tyteca (1958/1989), which will serve to recognize the argumentative techniques used. The method of this work is a qualitative research with descriptive orientation; the latter aspect can be seen in the systematic observation of the elements that make up the argumentation, the graphic representation of the arguments and the identification of the argumentative techniques used by the students in their dissertation. The evaluation of these data provides an understanding of the relationship betw...
11
Publicado 2021
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El objetivo de este trabajo de investigación fue para realizar edificaciones educativas se debe realizar un planteamiento arquitectónico; dentro de ellos se puede encontrar estudios, así como: estudio del clima, topografía, elementos naturales, elementos artificiales, desniveles interiores y exteriores. Además del planteamiento arquitectónico, otro aspecto importante a considerar, es la normatividad para infraestructuras educativas, así como: Norma A 040 y Norma A 130. Los elementos estructurales en el sector constructivo, brindan resistencia toda estructura, mientras que los elementos no estructúrales cumplen la función arquitectónica o estética de toda edificación. Los elementos estructurales de concreto armado, se caracterizan por ser resistentes a movimientos sísmicos. El concreto armado se usa en todo tipo de edificaciones, una de ellas son las infraestructuras educativ...
12
artículo
Publicado 2018
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The purpose of this research is to contribute to preservation of our historical heritage represented in this study by the Cathedral of Tacna, making an analysis of the cathedral with emphasis on the dome through a model in a specialized software, using the Finite element tool. From the structural analysis carried out, it was determined that the dome of the cathedral of Tacna would fail in several points, for which reason the respective reinforcement with the Geosteel 2000 material is proposed, whose inclusion in the model realized results in an improvement in its capacity resistant. Finally it is concluded that it is necessary to reinforce the dome and the proposed material fulfills the function of improving the resistant capacity of it.
13
artículo
Publicado 2018
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The purpose of this research is to contribute to preservation of our historical heritage represented in this study by the Cathedral of Tacna, making an analysis of the cathedral with emphasis on the dome through a model in a specialized software, using the Finite element tool. From the structural analysis carried out, it was determined that the dome of the cathedral of Tacna would fail in several points, for which reason the respective reinforcement with the Geosteel 2000 material is proposed, whose inclusion in the model realized results in an improvement in its capacity resistant. Finally it is concluded that it is necessary to reinforce the dome and the proposed material fulfills the function of improving the resistant capacity of it.
14
artículo
Publicado 2018
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The purpose of this research is to contribute to preservation of our historical heritage represented in this study by the Cathedral of Tacna, making an analysis of the cathedral with emphasis on the dome through a model in a specialized software, using the Finite element tool. From the structural analysis carried out, it was determined that the dome of the cathedral of Tacna would fail in several points, for which reason the respective reinforcement with the Geosteel 2000 material is proposed, whose inclusion in the model realized results in an improvement in its capacity resistant. Finally it is concluded that it is necessary to reinforce the dome and the proposed material fulfills the function of improving the resistant capacity of it.
15
artículo
Publicado 2021
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The Linguistics of the text proposes the study of a text from a global point of view, since it conceives it as a coherent unit, carrying meaning. From the perspective of that field of study, this research aims to show how, in the story "Agua" by José María Arguedas, there is an underlying textual superstructure corresponding to a discourse of denunciation, which becomes evident in the elements that form part of the fictional universe proposed by the story. We make use of the discursive categories that the researcher María Claudeville postulated as recurring in the textual structures of the denunciation discourses. These categories are present in the possible world manifested in the story "Agua", in which the existence of a problem and the search for a solution are exposed. Thus, it is shown how a fictitious text can serve as a means to publicize a speech of denunciation.
16
artículo
The social, economic, and environmental consequences of the failure of an arch dam make it essential to evaluate its dynamic response to mitigate the risk of a disaster. Since the slenderness and flexibility of these dams tend to increase the fluid-structure interaction during an earthquake, this work compares the dynamic response of a hypothetical arch dam in the Marañón river, in northern Perú, for both full and empty-reservoir conditions. Three formulations were used to estimate the hydrodynamic pressures: Westergaard’s added mass, Eulerian and Lagrangian. The comparisons were performed for earthquakes of distinct seismogenic sources, previously matched to a uniform hazard spectrum with a return period of 10000 years. The finite element method was used to derive the seismic demands of the dam-reservoir-foundation system in COMSOL Multiphysics software, carrying out time-history a...
17
artículo
Publicado 2011
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With our article FLEXIBLE COST STRUCTURES TO OVERCOME THE GLOBALIZATION AND COMPETITIVENESS IN THE COMPANIES, presented in the journal QUIPUKAMAYOC Nº 33 we began an investigation to propose a model that incorporates the increasingly used strategy to achieve cost competitiveness in the market. Companies, with the new model of competitiveness that demands flexible production processes, are implementing business strategies in order to SPEED UP, SIMPLYFY and SECURE processes. Service companies are part of this strategy, which they are transferred functions or activities carried out within companies. But as we discussed in this article, SERVICE or OUTSOURCING costs can no longer be treated inside the other indirect costs of production (ICP) so we are looking for the fourth element, as a proposal to manage costs more accurately. This time, we will analyze various service contracts to underst...
18
artículo
Publicado 2011
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With our article FLEXIBLE COST STRUCTURES TO OVERCOME THE GLOBALIZATION AND COMPETITIVENESS IN THE COMPANIES, presented in the journal QUIPUKAMAYOC Nº 33 we began an investigation to propose a model that incorporates the increasingly used strategy to achieve cost competitiveness in the market. Companies, with the new model of competitiveness that demands flexible production processes, are implementing business strategies in order to SPEED UP, SIMPLYFY and SECURE processes. Service companies are part of this strategy, which they are transferred functions or activities carried out within companies. But as we discussed in this article, SERVICE or OUTSOURCING costs can no longer be treated inside the other indirect costs of production (ICP) so we are looking for the fourth element, as a proposal to manage costs more accurately. This time, we will analyze various service contracts to underst...
19
tesis de grado
Publicado 2019
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En nuestra región y en todo el país existe mucha informalidad en la ejecución de viviendas de albañilería confinada, esto en su mayoría se debe a un mal diseño estructural y falta de criterio de los constructores por ello este trabajo pretende hacer un diseño tal que sirva a futuros profesionales como referencia en el desarrollo de proyectos de este tipo. En este trabajo se resolverá el problema aplicando la mejor manera de realizar el análisis y diseño estructural de un edificio de albañilería confinada tal que sea óptimo y económico de acuerdo los lineamientos de la Norma Técnica de Edificaciones E.070 conjuntamente con las demás normas vigentes de estructuras. Para el análisis del edificio que se diseñó se siguió una metodología que comienza con la estructuración donde se buscó una distribución para asegurar una rigidez adecuada en ambas direcciones para contr...
20
otro
Publicado 2021
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The purpose of this Professional Sufficiency Work entitled "The comic strip: elements and structure" is to support a learning session for second grade high school students, where students will understand the meaning of the comic strip, its characteristics, structure and elements it contains, as well as its purpose and usefulness for society. The comprehension of texts is a useful competence for the intellectual development of the student, facing this need arises the involvement of an adequate teaching for such learning. The usefulness of instructional texts allows this development and in turn the application of a learning session as the theme of the cartoon will allow introducing young people in the world of reading analysis; since this theme is appropriate because it is presented in a striking way, full of colors, symbologies and onomatopoeias; where the student can read without getting...
