Electronic Journal of Structural Engineering最新文献_第6页

The Application of the Best-Worst Method to Gain the Premier Modified Asphalt Mixtures 最佳-最差法在获得初级改性沥青混合料中的应用

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Electronic Journal of Structural Engineering Pub Date : 2021-11-30 DOI: 10.56748/ejse.21292

M. Zarei, A. A. Kordani, A. Salehikalam, F. Akbarinia, M. Karimi, S. Javadi

{"title":"The Application of the Best-Worst Method to Gain the Premier Modified Asphalt Mixtures","authors":"M. Zarei, A. A. Kordani, A. Salehikalam, F. Akbarinia, M. Karimi, S. Javadi","doi":"10.56748/ejse.21292","DOIUrl":"https://doi.org/10.56748/ejse.21292","url":null,"abstract":"The main purpose of Hot Mix Asphalt (HMA) is to choose the most suitable and the most affordable mix of bitumen and aggregates, so that it can maintain the technical properties of the asphalt concrete in certain amounts. Different methods have been suggested for mixing the Hot Mix Asphalt (HMA) including the Marshall method, the modified Marshall method, Hveem method, and the Superpave mixing method. Concurrently, the project of mixing Hot Mix Asphalt (HMA) in Iran is done based on the Marshall method and the modified Marshall method. Regarding the weaknesses of the asphalt mixes in different situations, the engineers try to modify and improve the properties of the asphalt mix by use of different additives. On the other hand, the additional expenses of various additives to the asphalt mix for building one kilometer of the road is a negative parameter. However, by use of the additives, the technical properties of the asphalt mix improve. Therefore, to decide on a proper choice out of the alternatives would be a difficult task. This paper, tries to provide an appropriate method for evaluating and choosing the best alternative by taking into consideration all the technical criteria. In this article, we first evaluate the score and the weight of each alternative in each criterion. Then, the weight of each criterion is evaluated using the best-worst method, and eventually, taking all aspects into consideration, the rankings of different alternatives will be determined based on two situations: certain situation and uncertain situation.","PeriodicalId":52513,"journal":{"name":"Electronic Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41953132","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

Numerical simulation of a conical roofed low-rise building to estimate the wind pressure coefficients 锥形屋面低层建筑风压系数的数值模拟

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Electronic Journal of Structural Engineering Pub Date : 2021-11-30 DOI: 10.56748/ejse.21289

Jagbir Singh, A. Roy

引用次数: 1

Slope Stability Analysis with Dual Reduction Factors Method Based on Field Variables Provided by ABAQUS 基于ABAQUS现场变量的双折减因子法边坡稳定性分析

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20248

Mingqing Du, Xuchun Wang

引用次数: 0

Application of concordance analysis method (CA) for optimal selection of asphalt mixtures reinforced with rubber powder and carbon fiber 一致性分析法（CA）在胶粉和碳纤维增强沥青混合料优选中的应用

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20246

M. Zarei, B. Mirbaha, F. Akbarinia, Z. Rahmani, M. Zahedi, A. Zarei

{"title":"Application of concordance analysis method (CA) for optimal selection of asphalt mixtures reinforced with rubber powder and carbon fiber","authors":"M. Zarei, B. Mirbaha, F. Akbarinia, Z. Rahmani, M. Zahedi, A. Zarei","doi":"10.56748/ejse.20246","DOIUrl":"https://doi.org/10.56748/ejse.20246","url":null,"abstract":"Unlike the conducted studies in the field of reinforcing the asphaltic mixture, this research has used the multi-criteria decision-making method to determine the optimal percentage of the asphalt mix, which was reinforced with rubber powder and carbon fibers. After adding different percentages of two kinds of additives, i.e. rubber powder and carbon fibers conjointly, conducting Marshall Tests, analyzing the data and plotting the needed diagrams, it was observed that adding these two additives leads to a change in the results of Marshall Tests. Analyzing the diagrams, the optimal percentages for combining the rubber powder with carbon fibers were obtained, 15% and 0.5%, respectively having the best effect on the asphalt mix. Subsequently, the extra cost caused by adding the additives to the asphalt was evaluated by conducting an economic analysis. Then, six Mar-shall Parameters were used as six indices in the concordance analysis method, which is a multi-criterion decision-making method. Ultimately, the superior alternatives were proposed according to the results of the ranking. Ac-cording to the results, the suggested alternatives differed from the estimated alternative and the concordance analysis method proposed better alternatives.","PeriodicalId":52513,"journal":{"name":"Electronic Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44698352","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: 19

Study of Landslide Prevention Schemes Options Using Probability Dom-inance Decision-Making Model 基于概率优势决策模型的滑坡防治方案选择研究

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20241

Fei Wang, Hui Zhang, Dongjun Li

{"title":"Study of Landslide Prevention Schemes Options Using Probability Dom-inance Decision-Making Model","authors":"Fei Wang, Hui Zhang, Dongjun Li","doi":"10.56748/ejse.20241","DOIUrl":"https://doi.org/10.56748/ejse.20241","url":null,"abstract":"Optimum selections of landslide scheme and scientific treatment are of great theoretical and practical importance to avoid or reduce the unnecessary loss of life and money. In this study, we shall first briefly introduce a Probability Dominance Decision-Making model to evaluate the effectiveness degree of landslide scheme considering the weights of relationship between decision attributes. Firstly, several meas-ured indicators of landslide control (Total Project Investment U1, Construction Difficulty U2, etc.) are selected as key impacting indicators to appraise alternative schemes correctly. Moreover, the attribute values of inter-val information for each landslide scheme is defined, and then the Attribute Dominance Relation is proposed to solve the index weights as well as the problem of unknown attribute weight in landslide control schemes. Next, the attribute weight values are ranked and picked by the dominance index relationship between the de-cision schemes and overall schemes. Simultaneously, this paper analyzed the probability decision making problem of using attribute value as Interval Number. In this procedure, we introduced the detailed derivation and analyzed the same and different points between the proposed model with the Deviation Maximization Al-gorithm. Finally, an example is given to illustrate the effectiveness and feasibility of the model.","PeriodicalId":52513,"journal":{"name":"Electronic Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46659339","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

Manufacture of Concrete Paver Blocks with Recycled Demolition Waste 利用再生拆除废料生产混凝土铺路砖

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20249

G. Balasubramanian, D. Salvia, D. Bharathi

引用次数: 4

Economical and Technical Study on the Effect of Carbon Fiber with High Strength on Hot Mix Asphalt (HMA) 高强度碳纤维对热拌沥青（HMA）影响的经济技术研究

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20240

M. Zarei, F. Akbarinia, Z. Rahmani, M. Zahedi, A. Zarei

{"title":"Economical and Technical Study on the Effect of Carbon Fiber with High Strength on Hot Mix Asphalt (HMA)","authors":"M. Zarei, F. Akbarinia, Z. Rahmani, M. Zahedi, A. Zarei","doi":"10.56748/ejse.20240","DOIUrl":"https://doi.org/10.56748/ejse.20240","url":null,"abstract":"In this article by adding different percentages of carbon fiber with high strength and doing the necessary Marshall tests, it was observed that the Marshall Resistance and its Flow increased. Due to their armed properties, the carbon fibers have a positive effect on Marshall Resistance. According to the results, in-creasing the percentage of fibers, reduces the resistance, so that the resistance of the sample containing 1.5% of carbon fiber is almost 32% more than the resistance of the sample without fiber. According to the results, the increased resistance compared to the previous researches and other fibers stems from the kind of fiber used in it and its high resistance. After increasing the fiber percentage to 3, a 12% decrease in the resistance was seen. On the other hand, by changing the percentage of the fibers added to the aggregates, the Flow will change, so that the sample containing 3% of fiber is almost 189% more Flow than the base sample. The economic analysis was used for a three-lane road. The results showed that economically speaking, due to their high price, these types of fibers are recommended to be used in restricted and optimal areas.","PeriodicalId":52513,"journal":{"name":"Electronic Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49651504","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: 21

Acceptable movements of road embankments 路堤可接受的移动

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20243

G.P. Papageorgiou, N. Alamanis, N. Xafoulis

引用次数: 7

Behaviour and Design of Steel I-Beam to Column End Plate Bolted Connections Based on Experimental and Numerical Investigations 基于试验与数值研究的工字钢-柱端板螺栓连接性能与设计

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20250

A.H. Salem, E.Y. Sayed-Ahmed, A.A. Elserwi, R.S. Aziz

{"title":"Behaviour and Design of Steel I-Beam to Column End Plate Bolted Connections Based on Experimental and Numerical Investigations","authors":"A.H. Salem, E.Y. Sayed-Ahmed, A.A. Elserwi, R.S. Aziz","doi":"10.56748/ejse.20250","DOIUrl":"https://doi.org/10.56748/ejse.20250","url":null,"abstract":"Steel Beam to column rigid connections are required to transfer forces and moments. I-beam are commonly connected to columns using bolted end plates rigid connections, which are mainly subjected to bending moment and shear force. Behaviour of these connections have been extensively investigated. How-ever, besides being complicated, current methods of estimating bolt forces and plate thickness of the connec-tions do not consider the interaction between the bolt elongation and the plate deformation. An experimental investigation is performed on rigid beam to column bolted connections with flushed and extended end plates. Then, a numerical model accounting for geometric and material nonlinearities is built up. The model results are verified against the experimental investigation data. Using this model, a parametric study is performed on the connection. Interaction curves have been presented, which reveals the effects of the investigated parame-ters on the bolts’ forces, the prying action, the thickness of the end plate and the connection capacity. Modes of failure of these connections have been scrutinized showing two distinct modes: bolts failure or steel end plate yielding. The results of the investigation are used to perform a critical review of the procedures adopted by AISC for these rigid connections revealing the shortcomings of the AISC design procedures. Finally, de-sign charts and equations for the rigid end plate connections are introduced based on the results of the exper-imental and numerical investigation, which may significantly facilitate the selection of both the bolt’s diame-ters and the end plate thickness for the investigated connections.","PeriodicalId":52513,"journal":{"name":"Electronic Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47623737","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

Elastic Buckling Loads of Fixed Frames By The Newmark Method 用Newmark法计算固定框架的弹性屈曲荷载

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Electronic Journal of Structural Engineering Pub Date : 2020-06-01 DOI: 10.56748/ejse.20239

A. Badir

引用次数: 0