Jordan Journal of Civil Engineering最新文献_第2页

Spatiotemporal Analysis of Property Damage-only Accident Hotspots Using GIS in Sharjah, UAE 利用地理信息系统对阿联酋沙迦仅造成财产损失的事故热点进行时空分析

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-04-12 DOI: 10.14525/jjce.v18i2.13

Lubna Obaid

{"title":"Spatiotemporal Analysis of Property Damage-only Accident Hotspots Using GIS in Sharjah, UAE","authors":"Lubna Obaid","doi":"10.14525/jjce.v18i2.13","DOIUrl":"https://doi.org/10.14525/jjce.v18i2.13","url":null,"abstract":"Recent research on road-traffic accidents (RTAs) has become a focal point for safety and transportation experts, focusing on understanding their rates, characteristics, causes and effects. A significant development in this field is using Geographic Information Systems (GISs) to analyze RTAs. The primary objective of this study is to introduce a GIS-based approach for the comprehensive analysis of the spatial and temporal distribution of RTAs, specifically Property Damage-only (PDO) accidents. This research also endeavors to pinpoint accident-prone areas, commonly called ‘hotspots,’ and high-density accident clusters. This was achieved through spatialautocorrelation analysis, incorporating techniques, including inverse distance weighting, Moran’s index and the Getis Ord Gi* statistic. By focusing on eight years of accident data (2015-2022) in the Sharjah Emirate of the United Arab Emirates, this study contributes to a deeper understanding of the distribution of traffic accidents. The analysis of temporal patterns revealed that the monthly distribution of PDO accidents showed the lowest frequencies of incidents in July, August and September throughout the study period. Furthermore, PDO accident frequencies peaked in 2015, followed by a decline until 2018, after which there was a slight increase until the conclusion of the analysis in 2022. Spatial analysis highlighted significant clustering of PDO-related RTAs. Hotspot analysis specifically identified downtown areas of Sharjah city as more prone to PDO accidents than other regions. The findings underscore the effectiveness of the analytical methods employed, which can be utilized for identifying and prioritizing accident hotspots. Keywords: Road-traffic accidents, Property Damage Only (PDO), Spatial analysis, Hotspot analysis, GIS.","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709572","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

Investigating the Effects of Adhesive on the Shear Capacity of Bolted Steel Connections 研究粘合剂对螺栓连接钢筋剪切能力的影响

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-04-12 DOI: 10.14525/jjce.v18i2.06

Bilal Yasin

{"title":"Investigating the Effects of Adhesive on the Shear Capacity of Bolted Steel Connections","authors":"Bilal Yasin","doi":"10.14525/jjce.v18i2.06","DOIUrl":"https://doi.org/10.14525/jjce.v18i2.06","url":null,"abstract":"Recently, there has been a particular emphasis on the use of structural adhesives in steel connection systems. Applying adhesives that possess both high strength and flexibility would be highly advantageous for structural purposes. In this study, experimental tests are conducted on two main different types of steel-plate connections; namely, bolted connections and bolted connections with glue. The number of bolts ranged from one to eight for each connection type, such that a total of seven specimens of each type are tested. Additionally, one specimen with only glue is also tested for comparison. The findings indicated that the inclusion of up to four bolts with glue along the connection does not significantly increase the ultimate stress. This can be attributed to the non-uniform distribution of normal stresses, induced by the tightening of the small number of bolts that are not arranged across the entire connection region, on the capacity of the connection in the perpendicular direction. Thus, the connection could have been adequately established the same capacity through the use of adhesive alone. In contrast, the capacity is increased up to 60% and 100% when six or eight bolts are added, respectively, compared to the use of the connection with glue only. A three-dimensional finite-element analysis is developed based on the tested connections using ABAQUS/Explicit software. The glued interface between two steel plates is modelled using cohesive and damage criteria. The results are demonstrated to be consistent with the experimental findings. Keywords: ABAQUS, Adhesive, Bolts, Finite-element analysis, Shear, Steel connections","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709445","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

Strategies for Enhancing Traffic Safety among Adolescent and Adult Motorcycle Riders in Indonesia 加强印度尼西亚青少年和成年摩托车驾驶员交通安全的战略

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-04-12 DOI: 10.14525/jjce.v18i2.11

Pada Lumba

{"title":"Strategies for Enhancing Traffic Safety among Adolescent and Adult Motorcycle Riders in Indonesia","authors":"Pada Lumba","doi":"10.14525/jjce.v18i2.11","DOIUrl":"https://doi.org/10.14525/jjce.v18i2.11","url":null,"abstract":"This research places emphasis on strategies for enhancing traffic safety among adolescent and adult motorcycle riders. 87.36% of accidents in Indonesia involved motorcycle riders and approximately 25% of these accidents involve underage riders. Therefore, a reasonable solution is needed to reduce the number of accidents in Indonesia. The criteria for respondents in this study were adolescent and adult motorcycle riders. The respondents were interviewed for approximately 10 minutes. The total sample amounted to 530 respondents. The research was conducted in Riau province, Indonesia. The research results indicate that adolescent riders are about 4 times more likely to experience accidents compared to adult riders. Model validation demonstrates an accuracy level of up to 89% for the obtained model. The findings of this research suggest strategies for enhancing the safety of both adolescent and adult motorcycle riders, including advising riders to drive their motorcycles in good stamina and performance, advising riders to rest when fatigued, advising riders not to ride between 12:00 AM and 06:00 AM, enforcing strict measures by law enforcement to apprehend riders without a valid driving license, exercising caution when crossing straight roads and roads with non-variable roadside variability. Another finding from this research is that the model in this research took 3 factor types into consideration that cause accidents including human factors, road and environmental factors and vehicle factor. Then, these factors are modeled simultaneously. Keywords: Adolescent, Adult, Motorcycle, Riders, Safety, Strategies.","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709915","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

Modeling of Traffic Noise along Urban Arterials in Irbid City of Jordan 约旦伊尔比德市城市干道交通噪声模型

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-04-12 DOI: 10.14525/jjce.v18i2.14

Hashem R. Al-Masaeid

{"title":"Modeling of Traffic Noise along Urban Arterials in Irbid City of Jordan","authors":"Hashem R. Al-Masaeid","doi":"10.14525/jjce.v18i2.14","DOIUrl":"https://doi.org/10.14525/jjce.v18i2.14","url":null,"abstract":"Traffic-related noise pollution is a recurring problem in large and medium-sized cities. The objective of this study is to quantify traffic-noise levels along selected urban arterials and model the generated traffic noise based on traffic and pavement characteristics. Urban arterial and collector streets in Irbid city, Jordan, were taken as a case study. The city is considered an example of a medium-sized city. 65 urban arterial and collector sections were selected to achieve the stated objective. For each section, ten noise measurements were taken using a time interval of 2.5 minutes for each observation. The statistical pass-by method was used to measure 650 externalnoise observations. In addition, data on traffic, pavement and section geometric characteristics was obtained through field measurements. The collected traffic characteristics, including traffic flow, percentage of trucks and speed in each direction of travel, were obtained. In addition to the measurement of pavement macrotexture depth, an international roughness index was measured using a smartphone application. Investigation of the collected noise data indicated that urban streets experienced high noise levels, reaching maximum and average values of 82 and 77.2 dB(A), respectively. The results of the analyses showed that an increase in each of the included traffic characteristics resulted in significantly higher noise levels. For example, an increase in speed from 35 to 55 km/h would increase noise by 2.7 dB(A). In addition, the interaction term of roughness index and pavement macrotexture depth was found to increase the generated noise. Finally, the results of the analysis indicated that both multivariate linear -and exponential-regression models are suitable to model the generated traffic noise. Each model explained approximately 54% of the noise variability. Probably, traffic composition and vehicle-power type heterogeneity might reduce the level of explained variability. Keywords: Traffic noise, Urban arterials, Pass-by method, Noise modeling, Jordan.","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140710286","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

Behavior of Sand Specimens Subjected to Cyclic Loads under Drained and Undrained Conditions in Variable Loading Amplitudes 砂试样在不同加载振幅的排水和非排水条件下承受循环载荷的行为

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-04-12 DOI: 10.14525/jjce.v18i2.09

Van Thuy Do

{"title":"Behavior of Sand Specimens Subjected to Cyclic Loads under Drained and Undrained Conditions in Variable Loading Amplitudes","authors":"Van Thuy Do","doi":"10.14525/jjce.v18i2.09","DOIUrl":"https://doi.org/10.14525/jjce.v18i2.09","url":null,"abstract":"Dynamic loads with different magnitudes cause shear stress and strain in the soil and increase the pore water pressure, reducing soil strength and leading to structural failure. This article presents the behavior of natural river-sand specimens subjected to cyclic loads under both drained and undrained conditions, as observed in cyclic triaxial tests conducted in the laboratory. The experiments were performed on sand specimens with a relative compaction of 0.95 when changing the loading amplitude with three different levels of 30 kPa, 50 kPa and 60 kPa. Experimental results show that, under the condition of drained cycle load, the pore water pressure does not form; only accumulated strain and dynamic parameters are almost unchanged. Meanwhile, with the condition of undrained cyclic load, the pore water pressure increases and causes liquefaction of the specimen, then the axial strain increases dramatically and is not capable of recovery. When varying the loading amplitude under drained condition, the initial-strength values increase as the amplitude of the load increases. This trend has the opposite direction when testing under undrained condition, which means that when increasing the loading amplitude, the initial-strength values decrease and the liquefaction potential of the specimens is faster. Further, under the undrained condition, the loading amplitude of 30 kPa effect is almost negligible on the liquefaction ability of the specimen. Keywords: Sand, Drained condition, Undrained condition, Loading amplitude, Cyclic triaxial tests","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140711715","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

Mapping Floods during Cloudy Weather Using Radar Satellite Images 利用雷达卫星图像绘制阴天洪水地图

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-01-01 DOI: 10.14525/jjce.v18i1.03

Nawras Shatnawi

{"title":"Mapping Floods during Cloudy Weather Using Radar Satellite Images","authors":"Nawras Shatnawi","doi":"10.14525/jjce.v18i1.03","DOIUrl":"https://doi.org/10.14525/jjce.v18i1.03","url":null,"abstract":"Monitoring floods using optical satellite images in winter is challenging. Because of the thickness of clouds, the electromagnetic bands used by satellites are too narrow and the resulting signals are reflected into space. The purpose of this study is to assess the potential of implementing a high-resolution synthetic aperture radar system (SAR) for the purpose of mapping floods in Jordan while the weather is cloudy. TerraSAR-X satellite was utilized to acquire images of high resolution for flood monitoring. This research employed TerraSAR-X thresholding images to identify flood-prone areas and track floods over time using time-series images. It was possible to determine the places of the landscape that have been impacted by the flood and to establish the degree of damage by conducting an analysis of the changes that have occurred in the landscape. The accuracy of the study's findings was confirmed using backscatter texture analysis on the images, which revealed a small difference between thresholding and texture analysis approaches of less than 3% in the mapped test region's flood area. While monitoring floods, it is recommended to use TerraSAR-X images, particularly in conjunction with other data sources, such as weather predictions and hydrological models. KEYWORDS: Flood mapping, Polarimetric SAR, TerraSAR-X, Texture analysis, Thresholding, Interferometric SAR","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139391812","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

Expansive Soil Stabilization Using Steel Factory Dust 利用钢铁厂粉尘稳定膨胀性土壤

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-01-01 DOI: 10.14525/jjce.v18i1.11

Z. Abdalqadir

{"title":"Expansive Soil Stabilization Using Steel Factory Dust","authors":"Z. Abdalqadir","doi":"10.14525/jjce.v18i1.11","DOIUrl":"https://doi.org/10.14525/jjce.v18i1.11","url":null,"abstract":"One of the geotechnical-engineering roles is soil stabilization, because it affects the long-term strength and functionality of structures. For suitability and durability of expansive soils for construction projects, shear strength, bearing capacity and other characteristics can be enhanced through the stabilization process. This study is focused on the effects of steel factory dust (SFD) as an additive on the improvement of the undesired geotechnical properties of expansive soil (CH soil). A series of laboratory tests were conducted on intact and treated samples. SFD was added by 0, 2, 4, 6, 8 and 10% to the dry soil. The conducted tests are consistency, specific-gravity, modified Proctor compaction, swelling-pressure and -percent and unconfined compression tests. The addition of SFD reduced the values of liquid and plastic limits, plasticity index, modulus of elasticity and allowable bearing capacity. Significantly, the 10% SFD addition significantly reduced swelling percent and pressure by 26.8% and 25.4%, respectively while notably increasing the unconfined compressive strength (UCS) from 475 MPa to 629 MPa. SFD was found to be a successful waste material in improving expansive soil by using 10% as the best addition percent, which usefully saves the environment. KEYWORDS: Expansive soil, Stabilization, Steel factory dust, Swelling, Unconfined compressive strength. INTRODUCTIO","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139394868","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 Axial Stretching Mechanical Property Of Plant Fiber Reinforced Cementitious Composites 植物纤维增强水泥基复合材料的轴向拉伸力学性能研究

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-01-01 DOI: 10.14525/jjce.v18i1.05

Xinyuan Wang

引用次数: 0

Optimal Design of Truss Using a Hybrid Method Based on Particle Swarm Optimizer and Harris Hawk Algorithm 使用基于粒子群优化器和 Harris Hawk 算法的混合方法优化桁架设计

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-01-01 DOI: 10.14525/jjce.v18i1.07

M. Yassami

引用次数: 0

Assessing the Accident-Cost Relationship in Building Construction Projects Using Structural Equation Modeling 利用结构方程模型评估建筑施工项目中的事故与成本关系

IF 1.1

Jordan Journal of Civil Engineering Pub Date : 2024-01-01 DOI: 10.14525/jjce.v18i1.02

Milad Ghanbari

{"title":"Assessing the Accident-Cost Relationship in Building Construction Projects Using Structural Equation Modeling","authors":"Milad Ghanbari","doi":"10.14525/jjce.v18i1.02","DOIUrl":"https://doi.org/10.14525/jjce.v18i1.02","url":null,"abstract":"This study aimed to evaluate the accident-causing factors affecting the total cost of building construction projects using a structural-equation model (SEM). Through the analysis of 35 identified factors categorized into construction, natural disaster, physical and human and psychological domains, this study examined their effects on project costs. The data collected from 120 construction experts in Iraq was analyzed using the SmartPLS software. This study assessed the fit of the measurement model using the following key criteria: reliability, convergent validity and divergent validity. All latent constructs demonstrated Cronbach’s-alpha values of above 0.70 and composite-reliability (CR) values of above 0.70, indicating their reliability. The average variance extracted (AVE) values exceeded the 0.5 threshold, confirming convergent validity. The model also demonstrated acceptable discriminant validity. The results confirmed the significant impact of accident-causing factors on project costs, with \"excessive physical activity,\" \"storm,\" \"improper ventilation,\" \"low motivation and low efficiency of the workers,\" and \"fire, explosion and vibration\" emerging as the top five influencing factors. These findings emphasized the need for tailored safety measures to mitigate such risks. The study underscored the importance of addressing accident-causing factors to enhance both safety planning and financial outcomes in building construction projects. KEYWORDS: Accident-causing factors, Project cost, Construction-project management, Safety assessment, Structural-equation modeling","PeriodicalId":51814,"journal":{"name":"Jordan Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139391939","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