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Ovidius University Annals of Constanta - Series Civil Engineering最新文献

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Contributions to the Analysis of Building’s Durability Made of Local Materials 对当地材料建筑耐久性分析的贡献
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0015
B. D. Pericleanu, M. Pericleanu
{"title":"Contributions to the Analysis of Building’s Durability Made of Local Materials","authors":"B. D. Pericleanu, M. Pericleanu","doi":"10.2478/ouacsce-2019-0015","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0015","url":null,"abstract":"Abstract This paper presents a synthesis of research carried out by authors on local materials used in construction over time in South Eastern Romania. The earth in various forms and technologies has been a perfectible building material that by technologies and specific procedures confers resistance and structural stability. For the research the authors have selected a few specific types of buildings detailing on structural compliance, their sustainability and the factors that led to the depreciation of the building.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132357480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Quest for the Ideal Darcy-Weisbach Friction Factor Equation from the Perspective of a Building Services Engineer 从建筑设备工程师的角度寻求理想的达西-韦斯巴赫摩擦系数方程
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0008
Bacoţiu Ciprian
{"title":"The Quest for the Ideal Darcy-Weisbach Friction Factor Equation from the Perspective of a Building Services Engineer","authors":"Bacoţiu Ciprian","doi":"10.2478/ouacsce-2019-0008","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0008","url":null,"abstract":"Abstract The calculation of the friction factor involved in the Darcy-Weisbach equation has a key role in the accurate assessment of distributed head losses. For the turbulent flow regime, this friction factor was mathematically expressed in the form of the Colebrook-White (C-W) equation, widely accepted by engineers and scientists. Nevertheless, the C-W equation is an implicit one and must be solved using numerical methods. This is a major disadvantage for the average engineer, who always prefers an explicit equation which could be easily integrated into his familiar spreadsheet environment. The present paper is investigating some of the most used explicit alternatives to the C-W equation, with respect to several case scenarios taken from typical Building Services hydraulic calculations.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"299 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133350767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Aspects Regarding the Commercial Profitability of the Companies from Localities on the Coastal Area of Tulcea County 图尔恰县沿海地区地方企业商业盈利的几个问题
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0014
K. Aivaz, D. Vintila, M. Stan, Ionela Ionițiu, D. Tenea
{"title":"Aspects Regarding the Commercial Profitability of the Companies from Localities on the Coastal Area of Tulcea County","authors":"K. Aivaz, D. Vintila, M. Stan, Ionela Ionițiu, D. Tenea","doi":"10.2478/ouacsce-2019-0014","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0014","url":null,"abstract":"Abstract The purpose of this paper is the analysis of the business environment in the coastal area of Tulcea county, by administrative-territorial units, with the help of a synthetic indicator to appreciate the economic-financial performance, the profit rate. The analysis was performed for year 2018, the economic phenomena and processes being captured at the spatial level. The results obtained from this work support the strategy for the rehabilitation of the coastal zone in order to increase the economic performances by adopting policies corresponding to the new realities.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133127443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Business Management Strategies for Business Development. Organization of the Territory and Planning of Construction Works 企业发展的企业管理策略。地盘组织及建筑工程规划
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0005
Nicolae Postăvaru, G. Draghici, Cosmin Filip, Al-Rubaye Mohammed, S. Mohammed
{"title":"Business Management Strategies for Business Development. Organization of the Territory and Planning of Construction Works","authors":"Nicolae Postăvaru, G. Draghici, Cosmin Filip, Al-Rubaye Mohammed, S. Mohammed","doi":"10.2478/ouacsce-2019-0005","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0005","url":null,"abstract":"Abstract In order for a project to be built with respect to quality, budget compliance and execution time - all required conditions, a professional management of site-level operations is required. The technical complexity, the importance of performing the work on the set deadline, the resource constraints and the substantial costs require the planning, programming and rigorous control of all the works.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124692223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Proper Infrastructure Design at High Vertical Loads, Nearby Waterfront Structures 在高垂直荷载下，适当的基础设施设计，附近的滨水结构
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0004
D. Petrișor, Djordje Krkljus, Vlăescu Daniel
{"title":"Proper Infrastructure Design at High Vertical Loads, Nearby Waterfront Structures","authors":"D. Petrișor, Djordje Krkljus, Vlăescu Daniel","doi":"10.2478/ouacsce-2019-0004","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0004","url":null,"abstract":"Abstract Hence economic growth requires more and more investments in the harbor area, especially nearby waterfront structures, a special attention must be taken into account regarding proper infrastructure design for structures with high vertical loads. At the same time, we have to consider the good behavior of the new design structures and also their impact on the existing nearby waterfront infrastructure. Being adjacent to waterfront structures and due to the limited available space, these structures are typically tall and narrow, and exert average soil pressures on the order of 300KPa. These loads can only be accommodated by ground with an adequate bearing capacity. This publication presents case studies of waterfront projects like grain silos storage facility. Available results for the certification and monitoring of the works are also presented, as well as other considerations based on the author’s experience.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114750881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Creating a Sustainable Business Model in the Construction Firm 在建筑公司中创建可持续的商业模式
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0009
A. Marichova
{"title":"Creating a Sustainable Business Model in the Construction Firm","authors":"A. Marichova","doi":"10.2478/ouacsce-2019-0009","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0009","url":null,"abstract":"Abstract Every firm today is facing significant problems which are a consequence of the influence of external and internal factors. This necessitates strategic changes in its activities, which focus on the development of the basic elements of intangible assets - people, knowledge and system, whose effective combination allows building competitive advantage and company growth. The main, specific intangible resource of the company is the business model itself, which is the economic basis of the strategic behavior of the company. From this point of view the purpose of the study is: 1) developing a sustainable business model for the construction firm, 2) analyzing the mechanism by which the manager creates and/or develops his own sustainable business model, taking into account the specifics of the construction market.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129599902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effect of Number and Position of Rotational Friction Dampers on Seismic Response of Steel Frame 转动摩擦阻尼器数目和位置对钢框架地震反应的影响
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0011
I. Oance, S. Gelmambet
{"title":"Effect of Number and Position of Rotational Friction Dampers on Seismic Response of Steel Frame","authors":"I. Oance, S. Gelmambet","doi":"10.2478/ouacsce-2019-0011","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0011","url":null,"abstract":"Abstract This paper deals with effect of number and position of friction dampers on seismic response of 2D steel frame. For the present study four structures with six storeys are subjected to a time history analysis. For each story are using two, four and six friction dampers with different positions keeping slip load and stiffness constant. To study the effect of number and position of dampers in structures, are analysed the time period, top roof displacement, maximum base shear and percentage energy dissipated in accordance with energy induced in the frame. The results indicate that number and placement of damper affects the structural response. A large number of dampers do not always lead to best benefit in terms of energy dissipation.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134595356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Tension and Compression Testing Machine for Friction Dampers 摩擦阻尼器拉力和压缩试验机
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0012
I. Oance, S. Gelmambet, A. Popa
{"title":"Tension and Compression Testing Machine for Friction Dampers","authors":"I. Oance, S. Gelmambet, A. Popa","doi":"10.2478/ouacsce-2019-0012","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0012","url":null,"abstract":"Abstract The present paper shows the advantages in using this prototype of tension and compression test machine proposed by the authors. The mechanical behaviour of different materials and components can be easily obtained by using this type of device. The equipment enables a simplified change between the types of testing performed. The operators can quickly and easily change elements and accessories used in testing. This equipment is the suitable choice for evaluating different types of friction dampers.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130169667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
GPR Application for Risks Detection in Subsurface Engineering Construction Projects 探地雷达在地下工程建设项目风险检测中的应用
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0006
G. Alsharahi, A. Faize, C. Maftei, A. Driouach
{"title":"GPR Application for Risks Detection in Subsurface Engineering Construction Projects","authors":"G. Alsharahi, A. Faize, C. Maftei, A. Driouach","doi":"10.2478/ouacsce-2019-0006","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0006","url":null,"abstract":"Abstract The aim of this work is to study and explore the causes of the landslide in different locations using Ground Penetrating Radar (GPR) technology. GPR uses the electromagnetic method related the high-frequency pulse that used widely in various field. The experimental study focused on the investigation of the landslide in the road by GPR method with antenna 200 MHz. The landslides become serious problems and required various technique and methods to investigate it in several places. GPR measurements present a useful technique for studies and investigation of the problem. The GPR can be categorized in the first place as an experimental method surveys landslide depths were recognized at 1-10 m below the natural terrain level. The results obtained revealed the causes of landslides on the road.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115198019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Projects to Reduce the Coastal Erosion of the Romanian Black Sea Area 减少罗马尼亚黑海地区海岸侵蚀的项目
Ovidius University Annals of Constanta - Series Civil Engineering Pub Date : 2019-12-01 DOI: 10.2478/ouacsce-2019-0013
M. Stan, K. Aivaz, Ionela Ionițiu
{"title":"Projects to Reduce the Coastal Erosion of the Romanian Black Sea Area","authors":"M. Stan, K. Aivaz, Ionela Ionițiu","doi":"10.2478/ouacsce-2019-0013","DOIUrl":"https://doi.org/10.2478/ouacsce-2019-0013","url":null,"abstract":"Abstract The entire Romanian Black Sea coastline is subject to erosion under the conditions of coastal dynamics changing. The problem the Romanian coastal area is facing is the accelerated number of conflicts between coastal development and coastal erosion. The purpose of this article is to present the projects realized and proposed for the protection and rehabilitation of the Romanian coastal area. The implementation of projects from non-reimbursable European funds to reduce erosion in the coastal area of the Romanian Black Sea coast aims to protect and improve the quality of the environment and the standard of living.","PeriodicalId":345086,"journal":{"name":"Ovidius University Annals of Constanta - Series Civil Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127013384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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