Journal of Civil Engineering and Materials Application

Journal Information
EISSN : 2588-2880
Published by: OMICS Publishing Group (10.15412)
Total articles ≅ 14
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, Mahmoud Rahimi
Journal of Civil Engineering and Materials Application, Volume 1, pp 1-7; https://doi.org/10.15412/j.jcema.12010101

Abstract:
Iran is considered as one of the most seismic countries in the world and its cities have been frequently damaged by this natural phenomenon. Tehran, as the first metropolis of the country, is no exception to this, and prone to damage also due to its compactness, and being located on three active faults (Mesha fault, North Tehran fault, Rey fault). If activated, Mesha fault, North Tehran fault and Rey fault will destroy 20%, 35% and 55% of the city, respectively. Farahzad neighborhood in northern Tehran is one of the most seismic parts of Tehran metropolis. Hence, the main objective of this study is to investigate the seismicity of the neighborhood in terms of the risk of earthquakes. For this purpose, descriptive analysis, GIS software and Euclidean distance analysis were used. The results of this study showed that 57 hectares of Farahzad (136 hectares) with a relative area of 41% are located in a zone with a high earthquake risk (less than 400 m to the fault line). The area with a high seismic risk (400 to 800 meters) covers an area of 39 hectares, 29 percent of the total neighborhood. Also, 20 hectares of total residential buildings (34 hectares), with a relative area of over 58 percent, are located in a zone with a high risk of earthquakes.
, Mohammad Reza Kavian Pour
Journal of Civil Engineering and Materials Application, Volume 1, pp 108-117; https://doi.org/10.15412/j.jcema.12010303

Abstract:
Dams and Power Plants of Siah Bisheh are the first projects of the dams and Storage Pump Power Plant in Iran. The project is located 125 kilometers north of Tehran, Mazandaran province, which due to its proximity to the Siah Bisheh village it's called the same name. The purposes of this project are to create a balance in the consumable power grid of the country at high and low consumption hours, reduce the cost of thermal power of amortization, create a recreational and tourism environment in the region, and create job creation during the implementation and operation. This project has been found of two upper and lower dam and a Power Plant which is used of two channels due to the water transformation between the upper and lower dam. according to the relatively large distance between dams from each other and the complex topography of the Siah Bishe project, the design and implementation of channel tunnels have complexity and special importance, which it’s more important factors are being long route of the channel, passing the channel from the earthquake-prone and fault areas, high water pressure, the presence of tunnels and geological complexity of the area. According to the above subjects, the Siah Bishe projects had been one of the most complex and difficult parts of the project for design and implementation. In this article has been proceeded to the description of the important points of the value engineering application in the design and implementation of the channels, which its results and achievements will be very useful in designing and constructing of other country’s projects.
, Masoud Khodadadifard, Shahriar Afandizadeh
Journal of Civil Engineering and Materials Application, Volume 1, pp 8-15; https://doi.org/10.15412/j.jcema.12010102

Abstract:
Recently, the rapid growth of urbanization, in conjunction with a lack of proper transportation infrastructures, has raised traffic congestion in a great number of developing cities. The growing concern about traffic congestion persuades governments to promote public transit services which mostly need a substantial amount of money to implement. Budget limitations entice decision-makers to choose Bus Rapid Transit (BRT) systems as a less expensive solution. The implementation of BRT lines always comes with advantages and disadvantages. Furthermore decision-makers need a tool to evaluate the effects of converting a mixed-flow lane to a BRT lane. The main aim of this paper is to provide a decision-making criterion for the problem of lane conversion for BRT. To do so, Benefit-Cost Analysis (BCA) is applied, and finally, we assess Tehran BRT line 4, as a case study, in order to evaluate the impact of dedication of one lane to BRT on Chamran highway.
Sayed Hamid Reza Barnjani, ,
Journal of Civil Engineering and Materials Application, Volume 1, pp 28-32; https://doi.org/10.15412/j.jcema.12010105

Abstract:
Spur dikes are the intersecting or transverse structures, which are projected from the river bank toward the flow axis and cause diversion and direction of the flow from the banks towards central axis of the river. This structure affects the flow lines and causes change in the river flow pattern and protects the banks against erosion. Recognition of the flow pattern around a spur dike could help in a better understanding of the scour pattern and, as a result, achieving an accurate value of maximum scour depth. In this study, the k-ε turbulence models are investigated in determining the rotational flow and flow field around the spur-dike using FLUENT software. The results show that the software incorporating the k-ε model could appropriately model velocity distribution around the spur dike and the results exhibit a good compatibility with an average error of 9.24%.
Shahin Shabani,
Journal of Civil Engineering and Materials Application, Volume 1, pp 16-21; https://doi.org/10.15412/j.jcema.12010103

Abstract:
A layer of rubber surface in an aircraft will be separated by takeoff and landing in flight surfaces and these layers stick to the surface of the runway and by repetition, the thickness of these layers increases and improves lubrication and reduces the effect of signs on flight surfaces. In this paper, we prepared a diagrammatic presentation of test in the friction between eastern and western parts of the flight. Average values of friction of each of the three sections of the runway, in down stroke and up stroke, were measured once before tire removal operation and the second time after the tire relaxation and the exploitation rate index and minimum quality of flight surfaces were determined and then compared with the values and standards of the Federal Aviation Organization ICAO and international aviation regulations. The results show that the average coefficients of friction before removal of the tires, to the eastern part and the western part are 0.31 and 0.63, respectively which are lower than standard rates in comparison with standard values. And along with removal of tires, according to the minimum number of daily landings in runway of Imam Khomeini airport friction test should be measured every 4 months. Also, after tire removal, friction test should be carried out again and average friction coefficients for eastern and western parts were measured to be 0.72 and 0.67, respectively which were obtained after comparison with standard values.
M. Naserifard, S. Piroozbakht, M. Dashti Rahmat Abadi
Journal of Civil Engineering and Materials Application, Volume 1; https://doi.org/10.15412/j.jcema.12010302

Abstract:
Providing advanced publishing systems for journals, providing specialized services for authors and students, advanced services to libraries and scientific information indexing units, holding and hosting scientific conferences, scientific workshops and accepting PhD students in journal management.
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