Journal of Architectural and Engineering Research

Journal Information
EISSN : 2738-2656
Total articles ≅ 24
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Grigor Arakel Arakelyan, Amalya Karapet Karapetyan, Maria Martin Badalyan, Anahit Arshak Ghahramanyan, Evgeny Michael Makarov
Journal of Architectural and Engineering Research, Volume 2, pp 3-8; https://doi.org/10.54338/27382656-2022.2-001

Abstract:
This work aims to investigate the physical and mechanical characteristics of high-strength lightweight concrete components on the basis of local porous fillers and complex additives. It is theoretically substantiated and practically proven that with optimal amounts of the complex additives – micro silica and superplasticizer Melflux 5581F, it is possible to obtain concrete with a compressive strength of up to 62 MPa  and bending strength of 10.5 MPa, profitably using the microsilica pozzolanic activity and super plasticizer, which favorably changes the nature of porosity. Depending on the water/cement ratio, micro-and macro capillary pores of different origins, as well as other shape pores appear in the cement stone, which significantly affects the physical and mechanical characteristics of the concrete: strength, water absorption, water permeability, frost resistance, durability, etc.
Henrik Tigran Sergoyan, Grigor Vahan Bezirganyan
Journal of Architectural and Engineering Research, Volume 2, pp 83-91; https://doi.org/10.54338/27382656-2022.2-012

Abstract:
Real estate is one of the major sectors of the Armenian economy and has been developing dynamically since Armenia transitions from planned to market economies in early 1990s. More recently, large online platforms have been developed in Armenia to advertise real estate offerings, thus reducing information asymmetry, and increasing liquidity in both sales and rental markets. Simultaneously, granular geospatial data became increasingly affordable via platforms such as OpenStreetMap, Google Maps and Yandex Maps. With granular data concerning a representative portion of the real estate offering available online, it is increasingly tenable to monitor the real estate market in real time and develop analytical tools that can automatically and accurately estimate the value of real estate assets based on their internal and external features. This paper sets out to analyze Armenia real estate market and assess the performance of a special class of machine learning models while predicting the price of a square meter of apartments in Yerevan. Furthermore, it is presented the way to determine the most decisive factors which have an influence on the price of apartments on sale.
Hamlet Gurgen Shekyan, Norayr Grigor Hovumyan, Aramais Vardan Gevorgyan
Journal of Architectural and Engineering Research, Volume 2, pp 92-96; https://doi.org/10.54338/27382656-2022.2-013

Abstract:
The idea of this paper is to propose research methods designed for strength analysis of composite materials which are widely used in load-carrying structures. It is shown that the strength analysis and study of composite materials are carried out in two directions – considering them as inhomogeneous composite materials, representing a regular multilayer medium of alternating reinforcement layers and a polymer binder, and the study of the issue of structural strength, in which composites are considered as homogeneous elastic orthotropic bodies, to which the theory of elasticity of anisotropic media is applicable. These approaches enables to represent the composites in the form of a continuous medium and  use the methods of the theory of elasticity of anisotropic media in calculating the acting stresses, which makes it possible to use the influence of the elements of manufacturing technology on the physical and mechanical characteristics.
Narine Emil Mkhitaryan, Sherly Andranik Avedian
Journal of Architectural and Engineering Research, Volume 2, pp 52-58; https://doi.org/10.54338/27382656-2022.2-008

Abstract:
The article touches upon the origin of khachkar art, symbolism, stages of compositional development, as well as characteristics of artistic means. Since the 9th century, khachkar art has become a means of expressing the spiritual aspirations, religious perceptions and ideas of the Armenian nation. Thousands of khachkars, being one of a kind, are scattered not only throughout the Republic of Armenia and Arcakh, but also in the territory of Historical Armenia, including Turkey and Nakhichevan, as well as the Armenian colonies. Unfortunately, thousands of khachkars have been destroyed by vandals, who have tried and are trying to erase the Armenian trace outside the territory of present-day Armenia. The study aims at systematical presentation of the sequence of the phased development of khachkars, the compositionl, ornamental and national features typical of each period. We think that any research devoted to those purely Armenian monuments is still up-to-date and can enrich the list of scientific works dedicated to Armenian culture.
Suzanne Monnot
Journal of Architectural and Engineering Research, Volume 2, pp 59-70; https://doi.org/10.54338/27382656-2022.2-009

Abstract:
The corpus of accounts by European travelers who visited Armenia (Fig. 1), extracted from A. Marouti's research, as well as various writings by authors - Armenian architects during the Russian then Soviet period - will serve as a starting point for this research. Its objective is to put two questions in parallel: what consideration of vernacular constructions as genuine architectures in Armenia; and how this interest is situated about these architectures in the West. Using the Timelines tool, a chronological comparison ("side by side" in French) allows us to identify Soghomon Vardanian as a precursor to the recognition of the vernacular.
Vadim Igor Bespalov, Mihran Grigor Stakyan, Grigorii Sergey Grishin
Journal of Architectural and Engineering Research, Volume 2, pp 9-13; https://doi.org/10.54338/27382656-2022.2-002

Abstract:
The scientific article is devoted to determining the effectiveness of the use of geoinformation systems (GIS) in the design of gas distribution and gas consumption networks. An experiment was carried out on a laboratory stand modeling ring, dead-end and mixed gas networks. The electronic model of a gas network identical to the laboratory stand in the ZuluGaz 10.0 software package, a module for expanding the GIS functionality for calculating gas supply networks designed to solve various industry. A comparative analysis of the results of an experiment and the results obtained during simulation in GIS is carried out. Based on the analysis, a conclusion is made about the accuracy of the GIS results and the feasibility of using GIS for the design of gas distribution and gas consumption systems.
Aram Ashot Sahakyan, Elena Gennady Tsurikova
Journal of Architectural and Engineering Research, Volume 2, pp 75-82; https://doi.org/10.54338/27382656-2022.2-011

Abstract:
The problem of converting attenuated hydraulic energy into power energy in an artificial local resistance unit placed on a gravity drinking water pipeline (outlet control valve, pressure regulator) without disrupting the hydraulic regime of the water pipeline is examined. It is recommended to replace the regulator with the same resistance hydraulic turbine, and thus,with its corrective device, automatically adjust the consumption outlet of the water pipe. The energy and economic data of the hydraulic turbine unit to be built on the «Arzakan-Yerevan» drinking water main pipelines have been presented as an example of proposal implementation. According to estimations, the small hydroelectric power plant on the Yerevan water pipeline could produce 90 million kWh of electricity per year. It should be noted that the water supply system in Yerevan has around 300 half-open valves and pressure control devices, and in case of conversion of many of them, it is possible to apply the suggestion given in the article.
Khungianos Stepan Yavruyan, Evgeniy Sergey Gaishun
Journal of Architectural and Engineering Research, Volume 2, pp 97-99; https://doi.org/10.54338/27382656-2022.2-014

Abstract:
The use of by-products of the coal industry in the production of wall ceramics is quite relevant.Coal waste is a promising raw material base for the production of ceramic wall materials. Coal sludge is widely used in the production of clay bricks at factories in the Urals and Kazakhstan.The most mastered technology is the use of coal waste as an additive in the production of ceramic products. The use of local waste allowsto minimize raw material costs. A new are of recycling existing products will help to not only lower the cost of the future products, but will also preserve natural resources.
Koruyn Ashot Karapetyan, Sargis Hrachik Hairoyan, Eghishe Samvel Manukyan
Journal of Architectural and Engineering Research, Volume 1, pp 32-39; https://doi.org/10.54338/27382656-2021.2-2

Abstract:
The results of an experimental study of changes in strength and deformability during the period of time subjected to short-term loading of elements made of a soil-cement composite based on white soil (belozems) of carbonate composition are discussed. Research was carried out in accordance with current standards, as well as a well-known method that has been repeatedly tested earlier. To assess the experimentally established data, the results of similar studies by other authors, carried out applying elements from soil-cement based on clay soils, as well as from lightweight concrete on lithoid pumice (volcanic rock), are also presented. On the basis of the comparative analyzes of the experimentally established data, conclusions are formulated. The consideration of those may be useful both for the estimation of optimal schedules of the construction of buildings from a soil-cement composite, and for the assessment of their stress-strain state.
Nina Armen Nersesyan
Journal of Architectural and Engineering Research, Volume 1, pp 47-54; https://doi.org/10.54338/27382656-2021.1-12

Abstract:
Preservation of Artsakh's architectural heritage and the issues of use have acquired a special significance today. The historical stages of the construction of the city of Hadrut in Artsakh, and, as a result of their analysis, their impact on the further sustainable development of the city have been revealed. There are 5 main stages: formation, late Middle Ages, from the 19th century to the first half of the 20th century, Soviet and independence periods. Suggestions are given on the territorial development of the city.
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