Turkish Journal of Civil Engineering最新文献_第3页

Identifying Interrelated Factors of Fatal and Injury Traffic Accidents Using Association Rules 运用关联规则识别交通事故的相关因素

Turkish Journal of Civil Engineering Pub Date : 2023-06-23 DOI: 10.18400/tjce.1322965

Z. Kuyumcu, Hakan Aslan, Nilüfer Yurtay

引用次数: 0

Işıksız Kavşaklarda Kritik Aralık Kabulü İçin Yeni Bir Yaklaşım

Turkish Journal of Civil Engineering Pub Date : 2023-06-12 DOI: 10.18400/tjce.1314559

Sezin Hizarci, Serhan Tanyel, Selim Dündar, Ilgın Gökaşar, Burak Sengoz, Ali Topal

引用次数: 0

Kuzey Kıbrıs’taki Havzaların Morfometrik Parametreler Kullanılarak Kümelenmesi

Turkish Journal of Civil Engineering Pub Date : 2023-05-26 DOI: 10.18400/tjce.1312155

Hasan Zai̇foğlu

{"title":"Kuzey Kıbrıs’taki Havzaların Morfometrik Parametreler Kullanılarak Kümelenmesi","authors":"Hasan Zai̇foğlu","doi":"10.18400/tjce.1312155","DOIUrl":"https://doi.org/10.18400/tjce.1312155","url":null,"abstract":"Hidrolojik açıdan birbirine benzer havzaların sınıflandırılması özellikle bilginin ölçüm yapılmış havzalardan ölçüm yapılmamış havzalara taşınması açısından önemlidir. Bu çalışmada Kuzey Kıbrıs’ta yer alan havzalar bir takım temel, çizgisel, alansal ve rölyef morfometrik havza özellikleri göz önüne alınarak hibrid hiyerarşik k-ortalamalar kümeleme yöntemi ile beş farklı kümede sınıflandırılmışlardır. Coğrafi bilgi sistemleri (CBS) kullanılarak elde edilen bu morfometrik parametreler ile havzaların ve oluşturulan havza kümelerinin hidrolojik ve morfolojik özellikleri detaylı bir şekilde incelenmiştir. Elde edilen sonuçlara göre havzaların büyük çoğunluğunda ana akarsu kollarının orta dereceli akarsulardan oluştuğu ve sadece Küme 1 içerisinde yer alan havzalar ile bazı Küme 4 havzalarının nehir olarak tanımlanabilecek ana akarsu kolları olduğu belirlenmiştir. Havzaların büyük çoğunluğunda ise iyi gelişmiş drenaj ağı ile düşük drenaj yoğunluklarının olduğu saptanmıştır. Ayrıca Küme 1 ve 3 içerisinde yer alan havzaların yüksek havza rölyef özellikleri ile taşkınlar gibi doğal afetlere karşı daha yatkın oldukları belirlenmiştir.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130813431","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

Case Study of Stormwater Control by Permeable Road in Commercial Centre under Equatorial Climate 赤道气候下商业中心透水道路控制雨水的实例研究

Turkish Journal of Civil Engineering Pub Date : 2023-05-26 DOI: 10.18400/tjce.1310648

D. Mah, Norazlina Bateni, F. J. Putuhena

引用次数: 0

Simulation Models for Hydro-Electric Energy by Steady-Rate and Night-Shift-Pumped-Storage Operations 水电定率和夜间抽水蓄能运行的仿真模型

Turkish Journal of Civil Engineering Pub Date : 2023-05-26 DOI: 10.18400/tjce.1310667

T. Haktanir, A. Aydemir

引用次数: 0

Building's Controlled Seismic Isolation by Using Upper Horizontal Dampers and Stiff Core 上部水平阻尼器和刚性核心对建筑物控制隔震的影响

Turkish Journal of Civil Engineering Pub Date : 2023-05-01 DOI: 10.18400/tjce.1265467

Kourosh Talebi Jouneghani, M. Hosseini, M. S. Rohanimanesh, Morteza Raissi

{"title":"Building's Controlled Seismic Isolation by Using Upper Horizontal Dampers and Stiff Core","authors":"Kourosh Talebi Jouneghani, M. Hosseini, M. S. Rohanimanesh, Morteza Raissi","doi":"10.18400/tjce.1265467","DOIUrl":"https://doi.org/10.18400/tjce.1265467","url":null,"abstract":"The fundamental period of the seismically isolated buildings may be close to that of the long period pulses of near-filed earthquakes, leading to very large lateral displacements in isolators, which in turn can considerably reduce the stability of isolators, increase the chance of collision of the isolated buildings to adjacent buildings, or even result in overturning of the isolated buildings. Therefore, it is important to control these types of buildings and reduce the amount of lateral displacement in their isolating system. In this study, by conducting a series of time history analyses for a set of five multi-story steel buildings with various numbers of stories from 3 to 14, each having a very stiff core structure and a set of crosswise viscous dampers, connecting the building structure to the core structure at the lowest and the top floors, as well as the same structures without the core structure and dampers, the effect of stiff core and dampers in reducing the lateral displacement at isolators has been shown. Results indicate that by the proposed technique, the lateral displacement of the base isolation system is significantly decreased particularly for low-rise buildings.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129046431","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

Türkiye Bina Deprem Yönetmeliğindeki Performans Düzeylerinin Betonarme Kolonlar için Karşılaştırmalı Değerlendirilmesi

Turkish Journal of Civil Engineering Pub Date : 2023-05-01 DOI: 10.18400/tjce.1285845

Kaan Türker, Cengiz Gültekin

引用次数: 0

Car Fires in Multi-Story Parking Garages 多层停车场的汽车火灾

Turkish Journal of Civil Engineering Pub Date : 2023-05-01 DOI: 10.18400/tjce.1265492

Serdar Selamet, Burak Ayva

{"title":"Car Fires in Multi-Story Parking Garages","authors":"Serdar Selamet, Burak Ayva","doi":"10.18400/tjce.1265492","DOIUrl":"https://doi.org/10.18400/tjce.1265492","url":null,"abstract":"Automated multi-story parking garages are modern alternatives to conventional parking structures to save space and volume in highly demanded parking regions in urban areas. The design of such structures has significant knowledge gaps in terms of fire safety. The purpose of this study is to estimate the horizontal and vertical fire spread between passenger cars in automated multi-story parking garages and provide fire safety design to minimize fire spread and possible structural collapse. The fire spread between cars is established by estimating irradiance heat flux of each car component. An 8-floor automated multi-story parking garage with 56 passenger car capacity is designed in accordance with European standards. The results show that steel parking pallets underneath cars reach extreme temperatures about 1000 ℃ in early phases of fire for Category III vehicle fire with 8 MW maximum heat release rate, which could cause structural failure. Without any fire protection on the structure, the fire spreads to the car above in 23 minutes, to the neighboring car in 37 minutes and beyond the elevator shaft to the other cars in 82 minutes. The proposed sprinkler layout eliminates fire spread within 5 minutes. The most efficient way of passive fire protection is to seal steel pallet, its rail system and beams on the elevator shaft with 5 cm gypsum-based fire protection boards.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125073689","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

Effect of Different Screen Types on Head Loss in Deep Wells Used for Irrigation 不同筛型对灌溉深井水头损失的影响

Turkish Journal of Civil Engineering Pub Date : 2023-05-01 DOI: 10.18400/tjce.1265480

N. Orhan

{"title":"Effect of Different Screen Types on Head Loss in Deep Wells Used for Irrigation","authors":"N. Orhan","doi":"10.18400/tjce.1265480","DOIUrl":"https://doi.org/10.18400/tjce.1265480","url":null,"abstract":"This research was carried out with the help of a deep well simulator, which is commonly utilized for irrigation studies. In this study, flow types based on Reynolds number, well drawdown, head losses, and cost changes of these head losses were analyzed for four different sieve types used in wells. In addition, the flow types and head losses for the types of screen used were examined as per the theoretical calculations. \u0000Theoretically, the turbulent head loss among types of screens was calculated at the highest (0.37 m) in the bridge slot screen (ST4) and at least (0.028 m) in the round slot (ST3). The drawdown is the sum of the head losses for deep wells. Among the well-types, the maximum drawdown (113.46 cm) was measured within the bridge slot well type (WT4), and the minimum drawdown (50.37 cm) was measured in the horizontal slot oblong well type (WT2). The least head loss per unit flow rate in the wells was measured in the well, which was formed with a horizontal oblong slot (WT2) screen. Here, gravel and screen hole position affected the percentage of clogging in the screens. Overclogging of the screens caused the narrowing of the opening area, increased flow velocity and turbulent head loss, and increased drawdown. \u0000It has been revealed that the use of a horizontal oblong slot screen minimizes the head loss in the wells, depending on the physical properties of the gravel used in this study. One of the most important factors to be considered in well designs is the compatibility of the screen type depending on the physical properties of the gravel. Even the change of the geometric shape among the screen types having similar apertures changed the blockage of the gravel, causing the head loss to change. The well-designers should pay attention to the selection of gravel depending on the screen type or the selection of the screen depending on the type of gravel used.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123467148","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

Nanomontmorillonite Reinforced Fibre Cements and Nanomontmorillonite-Nanosilica Reinforced Mortars 纳米蒙脱土增强纤维水泥和纳米蒙脱土-纳米二氧化硅增强砂浆

Turkish Journal of Civil Engineering Pub Date : 2023-05-01 DOI: 10.18400/tjce.1265476

S. Papatzani, K. Paine

{"title":"Nanomontmorillonite Reinforced Fibre Cements and Nanomontmorillonite-Nanosilica Reinforced Mortars","authors":"S. Papatzani, K. Paine","doi":"10.18400/tjce.1265476","DOIUrl":"https://doi.org/10.18400/tjce.1265476","url":null,"abstract":"In this study the effect of an organomodified nanomontmorillonite (nMt) dispersion (nC2) and of a powder type nMt (nC4), were compared in quaternary low carbon footprint fibre-reinforced cementitious nanocomposites and mortars. 60% Portland cement, 20% limestone (LS) and 20% fly ash plus fibres/superplasticizer comprised the reference paste. nMt was added at 1% by mass. Pastes were investigated in terms of flexural strength, thermal properties, density and water impermeability. Neither of the two types offered strength enhancement. nC2 showed some potentials at late ages (90 days). Thermal gravimetric analyses showed limited additional pozzolanic activity towards the production of additional C–S– H at day 90, in agreement with flexural strength results and X-ray diffraction analysis, which showed the consumption of Ca(OH)2 even at day 28. No change in density was observed, whereas water impermeability tests showed that nC2 was more effectively organomodified not allowing water to be absorbed neither in the short nor in the long term, while nC4 at later ages seemed to be absorbing water back. Lastly, cubes of mortars were prepared and tested in compression in an attempt to fully investigate the potentials of the formulations. The effect of using simultaneously nMt and nanosilica (nS) was also recorded, however no increase in compressive strength was observed. The long-term density of the mortars was also investigated, results suggesting poor compaction which was not adjusted with the use of admixtures. These results are in support of previous studies undertaken in the field, showing that the purpose of use of organomodified nMt’s must be clearly defined before any formulations are designed.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133265934","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