Journal of Civil Engineering and Urbanism最新文献

Intercomparison of Rainfall Estimates of Three Distributions for Computation of PFD using Rational Formula and SUH Approach 用Rational公式和SUH方法计算PFD的三种分布的雨量估计的比较

Journal of Civil Engineering and Urbanism Pub Date : 2023-03-25 DOI: 10.54203/jceu.2023.2

N. Vivekanandan, C. Srishailam, R. Patil

{"title":"Intercomparison of Rainfall Estimates of Three Distributions for Computation of PFD using Rational Formula and SUH Approach","authors":"N. Vivekanandan, C. Srishailam, R. Patil","doi":"10.54203/jceu.2023.2","DOIUrl":"https://doi.org/10.54203/jceu.2023.2","url":null,"abstract":"Peak flood discharge (PFD) for a given return period is considered as one of the most important parameters for planning and design of hydraulic structures, river protection works, and development of integrated water resources management projects. This can be achieved by adopting various methods such as flood frequency analysis, rational formula, envelope curves and Synthetic Unit Hydrograph (SUH) approach. Out of which, rational formula is applied for estimation of PFD for ungauged catchments with catchment area less than 25 km2 while SUH approach is adopted for ungauged catchments with catchment area more than 25 km2. This paper aims to investigate the study on intercomparison of probability distributions for estimation of extreme (i.e., 1-day maximum) rainfall for computation of PFD by adopting rational formula and SUH approach for the Vadhavan Port Project (VPP). The annual 1-day maximum rainfall series is extracted from the daily rainfall data observed at Dahanu site during the period 1969 to 2019 and also used for estimation of rainfall. The probability distributions viz., Extreme Value Type-1, 2-parameter Log Normal and Log Pearson Type-3 (LP3) adopted in extreme value analysis of rainfall is evaluated through diagnostic test using root mean square error and accordingly LP3 is adjudged as the best fit for estimation of rainfall. The 1-day maximum rainfall obtained from LP3 is considered to compute the rainfall intensity by applying one-third rule of IMD (India Meteorological Department) and also used for computation of PFD through rational formula. In SUH approach, the areal rainfall, physiographic and SUH parameters of the ungauged catchments are considered for computation of PFD. The study suggests the 25-year, 50-year and 100-year return period PFDs at six locations within the study area using rational formula and SUH approach could be considered for design purposes while designing any civil and hydraulic structures in the VPP.","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132565394","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

Seismic Performance of Steel Moment Frame with Side-Plate Connections Combined with Friction Dampers 带摩擦阻尼器的侧板连接钢弯矩框架的抗震性能

Journal of Civil Engineering and Urbanism Pub Date : 2023-03-25 DOI: 10.54203/jceu.2023.1

Taher Omranifa

{"title":"Seismic Performance of Steel Moment Frame with Side-Plate Connections Combined with Friction Dampers","authors":"Taher Omranifa","doi":"10.54203/jceu.2023.1","DOIUrl":"https://doi.org/10.54203/jceu.2023.1","url":null,"abstract":"With the gradual change in the design method of structures from resistance-based methods to performance-based methods, existing common building frames do not respond to the criteria of these methods, and if these frames are designed with new performance criteria, the design will be uneconomical. The basic problem of the existing types of frames is the imbalance between hardness and plasticity in them. A structure must have sufficient hardness in order not to be displaced in an earthquake, and it must have high ductility in order to dissipate the energy of the earthquake well. In this article, the purpose of the structure's performance in the combination of friction dampers and side-pleat joints in the steel structure of the bending frame is according to the constraints in solving the problem such as architectural, executive and design limitations and considering the uncertainties inherent in the system. This problem is solved in such a way that all three conditions are estimated, and for this purpose, three structures, 6, 10, 15 stories, have been modeled in three dimensions and have been analyzed under time history analysis. In examining the arrangement of dampers in the frames, the amount of energy in the 3x3 structures in the second frame is more than the first frame, which has increased by about 15%. But in 5x5 structures, the amount of energy when the frame damper is 3 is more than other frames. In these structures, when the damper is in the third frame, the energy of the structure has increased by about 10% compared to other states. Also, the effect of side plate connection in increasing the hardness is also important. that the above connection will reduce displacement by creating hardness at the connection point, and as a result, it will absorb more energy.","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125365237","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

Property Value Pertinence for Residential Investments in Christian Mission Estates: An Investigation of Canaan-city of Ogun State, Nigeria 基督教传教小区住宅投资的物业价值相关性:对尼日利亚奥贡州迦南市的调查

Journal of Civil Engineering and Urbanism Pub Date : 2022-12-25 DOI: 10.54203/jceu.2022.9

O. A. Akinjare, Victoria Adeola Akinjare, C. Ayedun, Afolasade Olubunmi Oluwatobi, Matilder Nomteik Alexander

{"title":"Property Value Pertinence for Residential Investments in Christian Mission Estates: An Investigation of Canaan-city of Ogun State, Nigeria","authors":"O. A. Akinjare, Victoria Adeola Akinjare, C. Ayedun, Afolasade Olubunmi Oluwatobi, Matilder Nomteik Alexander","doi":"10.54203/jceu.2022.9","DOIUrl":"https://doi.org/10.54203/jceu.2022.9","url":null,"abstract":"The rapid expansion and urbanization of Lagos state of Nigeria due to uncontrolled rural - urban migration seems to have succeeded in transforming the peri-urban areas of Ota, Ogun state into a mini economic hub, thus propelling property values skywards. The present study ascertains if passing rents, as well as sales value for the various apartments in Canaan city estate as charged by the project developer, is overpriced, and underpriced or fair-priced. The rental data collected from the residents of the estate were compared with rental opinion obtained from practicing estate surveyors and valuers in Ogun State. 240 questionnaires were administered to residents of the estate while 22 questionnaires were administered to registered estate surveying and valuation firms. Interviews and questionnaires were deployed to solicit data from the Physical Planning Department (PPD) being the managers of the estate. The retrieved data were then collated and presented using figures and Tables. Findings showed that the passing rents for all cadres of residential apartments in the estate were discounted with the most discounted apartment type being the 2-bedroom luxury flats and the least discounted apartment type being the 4-bedroom semi-detached houses. For sales value, findings showed that the high end apartments – the detached houses, semi-detached and also the 3-bedroom terrace houses were hugely discounted. Unfortunately, the 1-bedroom and 2-bedroom flats were the least discounted while the 2-bedroom luxury flats and 3-bedroom flats were either within range or slightly overpriced. The study concluded that the passing rents were underpriced due to the income nature of tenants and subsequently, the sales value proposed by the developer of the estate was underpriced. The study recommended an upward review of sales prices should the estate proprietor still continue with the sales of its apartment within Canaan city.","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123086409","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

Determination of Earthquake Behaviors of a Reinforced Concrete Building with and without Earthquake Base Isolation 有无隔震基础的钢筋混凝土建筑抗震性能测定

Journal of Civil Engineering and Urbanism Pub Date : 2022-07-25 DOI: 10.54203/jceu.2022.8

Bulent Kaplan, F. Şahin

{"title":"Determination of Earthquake Behaviors of a Reinforced Concrete Building with and without Earthquake Base Isolation","authors":"Bulent Kaplan, F. Şahin","doi":"10.54203/jceu.2022.8","DOIUrl":"https://doi.org/10.54203/jceu.2022.8","url":null,"abstract":"There are many fault lines within the borders of our country, especially the North Anatolian Fault line. For this reason, earthquake resistant structural design is a very important issue in order to prevent possible economic losses after earthquakes, especially the life safety of people living in our country. The main goal in earthquake insulation, which is a new approach in earthquake design of buildings, is to reduce the possible effects on the structure by placing flexible elements in the horizontal direction and rigid in the vertical direction, by greatly reducing the earthquake loads and accelerations acting on the superstructure. In this study, the earthquake behavior of the buildings, which were designed by the Housing Development Administration of the Republic of Turkey and designed as a base isolation support, and the structures designed according to the principles determined in the Turkey Building Earthquake Code 2018 by using base isolation, were determined according to the non-linear time history analysis method. The behavior changes of the structure designed using earthquake base isolation compared to the conventional structure were examined, and the period values, floor accelerations and base shear forces of the two structures were compared. As a result of the results obtained, the positive effects of the period increase and the decrease in floor accelerations in the earthquake insulated structure were revealed.","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131701905","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

Progressive Collapse Evaluation of Low-Rise Reinforced Concrete Buildings Designed for Different Occupancy Classes 不同使用等级下低层钢筋混凝土建筑的连续倒塌评价

Journal of Civil Engineering and Urbanism Pub Date : 2022-05-25 DOI: 10.54203/jceu.2022.6

Aydin Demir

{"title":"Progressive Collapse Evaluation of Low-Rise Reinforced Concrete Buildings Designed for Different Occupancy Classes","authors":"Aydin Demir","doi":"10.54203/jceu.2022.6","DOIUrl":"https://doi.org/10.54203/jceu.2022.6","url":null,"abstract":"The study aims to investigate the progressive collapse behavior of low-rise reinforced concrete buildings designed for different occupancy classes. For this objective, two low-rise reinforced concrete framed buildings were designed independently according to the Turkish Seismic Code for Buildings by considering the Residential Occupancy Class and Government Buildings Occupancy Class. A nonlinear dynamic analysis method was employed to evaluate the progressive collapse response of the buildings by using the alternate path direct design approach of UFC 4-023-03 and GSA-2016 guidelines. Three-dimensional finite element models were created for the analyses, and fiber hinges were used to represent the nonlinear behavior of the load-bearing members. Three column loss scenarios were implemented independently. The analysis results show that the residual displacement of the residential building is higher than that of the government building in all column removal scenarios. Moreover, the damage conditions of the residential building are commonly worse than the government building for all column loss scenarios. It is deduced from the study that the buildings experienced the most severe local damage, disproportionate to the initial failure, under the inner column loss scenario","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132977149","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

Intercomparison of Estimates of Reference Evapotranspiration of Surat Region of Gujarat, India 印度古吉拉特邦苏拉特地区参考蒸散估算的相互比较

Journal of Civil Engineering and Urbanism Pub Date : 2022-05-25 DOI: 10.54203/jceu.2022.7

N. Vivekanandan, C. Srishailam, R. Patil

{"title":"Intercomparison of Estimates of Reference Evapotranspiration of Surat Region of Gujarat, India","authors":"N. Vivekanandan, C. Srishailam, R. Patil","doi":"10.54203/jceu.2022.7","DOIUrl":"https://doi.org/10.54203/jceu.2022.7","url":null,"abstract":"Evapotranspiration is a vital parameter for irrigation planning and management, and for hydrological and climatological studies. This can be estimated by using Blaney-Criddle (BC), Thornthwaite (TW), Hargreaves (HG) and Penman-Monteith (PM) methods. Out of these methods, BC and TW are known as temperature based whereas HG is radiation based and PM is based on Food and Agriculture Organization (FAO) report on crop water requirements. This paper illustrates a study on comparison on estimates of reference evapotranspiration (ETo) obtained from temperature, radiation and FAO based methods for Surat region. The meteorological data such as air temperature, relative humidity and sunshine hours observed at Surat region for the period 2001 to 2016 is used. In addition, the wind speed and solar radiation data is downloaded from the International Water Management Institute website and used in estimation of ETo using PM. The performance of the methods used in estimation of ETo is evaluated through regression analysis by developing a linear regression between the observed and estimated values of ETo using BC, TW and HG, and FAO based PM. The results of linear regression analysis indicated that there is a good line of agreement between the observed and estimated ETo using PM with CC of 0.968 when compared with those values of BC, TW and HG. The study show that the PM is better suited amongst four methods applied in estimating the ETo for Surat region, Gujarat.","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116325666","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

A Historical Perspective on the Impact of the Infectious Disease Outbreaks on Architectural and Urban Changes 传染病爆发对建筑和城市变化影响的历史透视

Journal of Civil Engineering and Urbanism Pub Date : 2022-05-25 DOI: 10.54203/jceu.2022.5

P. Bursa

引用次数: 0

Development of a Framework for Reduction of Urban Traffic Congestion: Case Study of Akure Central Business District, Nigeria 减少城市交通拥堵框架的发展:以尼日利亚阿库雷中央商务区为例

Journal of Civil Engineering and Urbanism Pub Date : 2022-03-25 DOI: 10.54203/jceu.2022.4

S. Adelakun, Aderinlewo Olufikayo

{"title":"Development of a Framework for Reduction of Urban Traffic Congestion: Case Study of Akure Central Business District, Nigeria","authors":"S. Adelakun, Aderinlewo Olufikayo","doi":"10.54203/jceu.2022.4","DOIUrl":"https://doi.org/10.54203/jceu.2022.4","url":null,"abstract":"Traffic congestion has become a problem in the central business district of Akure. These roads during peak periods have defied measures to alleviate such congestion, leading to poor mobility and economic losses in form of costs of fuel, oil, as well as time cost of road users. The field survey was conducted on two major roads in the Central Business District (CBD) namely Oba Adesida and Arakale roads while considering the two directions along each route namely directions A and B, C and D respectively. Traffic parameters such as flow rate, speed and density were analyzed from the traffic data collected from each route along each direction. The field survey was carried out for a week (from Monday to Sunday) during the peak periods.ÂÂÂÂ The speed along direction A of Oba Adesida road was low due to more vehicles traversing the route. However, the speed of vehicles along direction D of Arakale road was lower than that along direction C. The traffic parameters were plotted against each other for the four directions for the morning, afternoon and evening periods. The derived linear models (equations) along the four directions gave minimum speeds for morning, afternoon and evening of 33.64 km/hr, 33.65 km/hr and 30.71km/hr respectively along direction A and 30.94 km/hr, 31.80 km/hr and 31.88 km/hr respectively along direction B for Oba-Adesida road; 36.59 km/hr , 35.30 km/hr, 33.58 km/hr respectively along direction C and 35.25 km/hr, 34.75 km/hr and 34.07 km/hr respectively along direction D for Arakale road for no congestion to occur.","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131651536","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

Study on Compressive of Plypropylene Fibre Concrete at Abnormally Hight Temperature 丙烯纤维混凝土在异常高温下的抗压性能研究

Journal of Civil Engineering and Urbanism Pub Date : 2022-03-25 DOI: 10.54203/jceu.2022.3

D. Thanh, P. Tinh, Cao duc Thinh

引用次数: 0

The Efficiency of Grey Water Treatment by Using Selected Sand Bed Bioreactors in South West Nigeria 尼日利亚西南部选定砂床生物反应器处理灰水的效果

Journal of Civil Engineering and Urbanism Pub Date : 2022-03-25 DOI: 10.54203/jceu.2022.2

J. Famakinwa, O. M. Ojo, Charles Williams

{"title":"The Efficiency of Grey Water Treatment by Using Selected Sand Bed Bioreactors in South West Nigeria","authors":"J. Famakinwa, O. M. Ojo, Charles Williams","doi":"10.54203/jceu.2022.2","DOIUrl":"https://doi.org/10.54203/jceu.2022.2","url":null,"abstract":"The In drinking or treated water, filtration plays a relevant role in the multi barrier approach used for the removal of pathogens. The presence of suspended solids and other particulate matter in grey water increases the resistance of most microbes to disinfection. These study aimed to determine the most suitable sand that can be utilized in the construction of sand bed bioreactor in grey water treatment. The bioreactor is expected to remove significant amount of grey water physical properties (odor, color, turbidity), physicochemical properties (pH, total solids, total dissolved solids, hardness, Nitrate, Magnesium, etc) and heavy metals (Iron, Cadmium, Chromium, Biological Oxygen Demand or BOD, Chemical Oxygen Demand or COD). Sand samples are collected from four different locations in southwest Nigeria to serve as the filter media in the bioreactor. Soil physical property test is carried out on all sand samples that was collected across southwest. The result of the study showed an improvement in physical property, about 80% improvement in physicochemical property and heavy metals. Eleyele soil sample effectively improved water quality compared to other soil samples.","PeriodicalId":151760,"journal":{"name":"Journal of Civil Engineering and Urbanism","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129088419","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