Proceedings of the Institution of Civil Engineers-Transport最新文献_第3页

An improved prophet emergency traffic flow prediction model 一种改进的先知应急交通流预测模型

4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-10-13 DOI: 10.1680/jtran.23.00081

Xueyi Gao, Jianwei Zhou, Yusheng Ci, Lina Wu

{"title":"An improved prophet emergency traffic flow prediction model","authors":"Xueyi Gao, Jianwei Zhou, Yusheng Ci, Lina Wu","doi":"10.1680/jtran.23.00081","DOIUrl":"https://doi.org/10.1680/jtran.23.00081","url":null,"abstract":"Emergencies are rare and random, but cause dramatic changes in traffic volumes whenever they occur. It therefore poses a huge challenge to accurately predict emergency traffic volumes. This paper aims to provide a practical methodology for predicting traffic volumes during emergencies, which was built using the Prophet model and improving the event function of the model. The proposed approach isolates the event impacts through time series decomposition techniques, and allows the model to add points in time when traffic flow changes abruptly and to incorporate external factors useful to adapt to the specific background imposed by the emergency. The main data used in the paper was the daily traffic volume dataset published on the Luxembourg Data Open Platform. These data were collected over a span from January 2017 to December 2021. The dataset covers the period of impact of the two emergencies. The proposed method and four comparative models were applied to the second emergency period. The results show that the proposed method can accurately predict unconventional changes caused by emergencies and has better prediction accuracy with real data than the other comparative models under the same attribute conditions through a comparative analysis.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135917923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 the green degree evaluation model of construction for prefabricated buildings 装配式建筑施工绿色度评价模型研究

4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-10-13 DOI: 10.1680/jsmic.23.00016

Zhipeng Huo

{"title":"Study on the green degree evaluation model of construction for prefabricated buildings","authors":"Zhipeng Huo","doi":"10.1680/jsmic.23.00016","DOIUrl":"https://doi.org/10.1680/jsmic.23.00016","url":null,"abstract":"To promote new urbanisation and the transformation of the construction industry, a green degree (GD) evaluation model for prefabricated buildings was proposed under the guidance of the industrial green concept. A combined ordered weighted average operator was used to assign weights to each index. On this basis, a GD evaluation model for prefabricated buildings was established by combining normal cloud theory and matter-element theory. The application effect was analysed using the dual-case method. The results indicated that for a steel-frame-supported prefabricated structure, the GDs of energy resource indicators and environmental protection indicators were both in level 2. The GD of construction management indicators, technological innovation indicators and social coordination indicators was in 3. The overall trend was from level 2 to level 3. For prefabricated concrete structures, all indicators had a GD of level 2. In contrast, frame-supported prefabricated structures had more development advantages and had important practical significance in guiding the transformation of the construction industry and the development of new urbanisation. The GD evaluation model could obtain comprehensive evaluation results under different assembly structures, providing assistance for the green development of the construction industry.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135804556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the precision of Light Weight Deflectometers through annual correlation trials 通过年度相关试验提高轻型偏转仪的精度

4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-10-09 DOI: 10.1680/jtran.23.00062

Michael Gordon, Michael J. McHale, Alan Ferguson

引用次数: 0

Research and application of cost control algorithm for engineering projects based on BIM technology 基于BIM技术的工程项目成本控制算法研究与应用

4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-10-02 DOI: 10.1680/jsmic.23.00021

Yun Zhang

{"title":"Research and application of cost control algorithm for engineering projects based on BIM technology","authors":"Yun Zhang","doi":"10.1680/jsmic.23.00021","DOIUrl":"https://doi.org/10.1680/jsmic.23.00021","url":null,"abstract":"In recent years, the construction industry has experienced unprecedented development, and the rise in cost factors in various stages of engineering projects has made various project participants pay more attention to cost control work. It is urgent to strengthen cost control throughout the entire process of engineering projects to achieve profit goals. To reduce the cost of the projects, the study proposes a cost control strategy based on BIM. Firstly, the risk identification algorithm of engineering projects is proposed based on BIM, then the cost control model is constructed based on the risk identification results, and the genetic algorithm is added to the model to improve its performance, and finally the simulation experiment is designed to verify the effectiveness of the method, and the results show that the identification accuracy of the risk identification algorithm proposed by the study reaches 99.7%, and the C-C method based on BIM can significantly reduce the cost expenditure of engineering projects. The evaluation method proposed in this study evaluated the effectiveness, scientificity, feasibility, and generalizability of the C-C method by more than 90 points. The above results show that the application of BIM can effectively realize the cost control of engineering projects, which is of great significance to the smooth development of engineering construction.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on fuzzy algorithm for intelligent power saving control of urban street lamps 城市路灯智能节电控制的模糊算法研究

4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-09-28 DOI: 10.1680/jsmic.23.00010

Hanmei Wu, Chun’e Li, Guofan Duan

{"title":"Research on fuzzy algorithm for intelligent power saving control of urban street lamps","authors":"Hanmei Wu, Chun’e Li, Guofan Duan","doi":"10.1680/jsmic.23.00010","DOIUrl":"https://doi.org/10.1680/jsmic.23.00010","url":null,"abstract":"Urbanization has increased the demand for energy efficient and environmentally friendly street lighting systems. However, traditional urban lighting uses time interval control and cannot be intelligently controlled according to the environment. Therefore, an intelligent urban street lighting control system based on advanced fuzzy control technology is developed. The system uses a fuzzy control algorithm based on ZigBee technology to study the street lighting system. The fuzzy control system determines input and output variables and obtains demand instructions for intelligent control of street lights through fuzzy operation. The number of node visits and node degree is optimized to complete the construction of the street lamp intelligent control system. Experimental simulations showed that the proposed scheme can reasonably control the brightness of the street lighting according to the ambient light. At 5:00 p.m., the proposed scheme adjusts the street lighting to 80W. The system is illuminated at rated power and the current power consumption is 100W. A test was carried out under a street lighting system, and the proposed scheme dynamically adjusted the lighting brightness reasonably considering various factors such as light intensity, noise intensity and vehicle speed. The proposed street lamp fuzzy control algorithm has good control performance and significantly reduces the system energy consumption. The research has important reference value for energy saving and intelligent control of urban lighting.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135388644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of methodologies for extraction of horizontal alignment features of roads in terms of cost and time 基于成本和时间的道路水平线形特征提取方法研究

4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-09-14 DOI: 10.1680/jtran.23.00044

Mohd Atif, Gourab Sil

{"title":"Investigation of methodologies for extraction of horizontal alignment features of roads in terms of cost and time","authors":"Mohd Atif, Gourab Sil","doi":"10.1680/jtran.23.00044","DOIUrl":"https://doi.org/10.1680/jtran.23.00044","url":null,"abstract":"The lack of coordination between the driver and geometry results in driver errors and crashes. Road geometric data is one of the primary requirements for safety analysis and improvement projects. This paper presents a systematic literature review to identify existing methodologies for road geometric data extraction. Methodologies based on GPS, GIS maps, AutoCAD digital maps, satellite imagery, IMU, LiDAR, and vision technology were found employing manual, semi-automatic, and automatic algorithms for extraction of horizontal alignment features of roads. A multi criteria analysis in terms of device/software cost, data treatment cost, and time acquisition was performed for the methodologies using an expert survey. Survey responses were analysed to rank the methodologies for minimum cost and time using Analytical Hierarchal Process (AHP). GPS and GIS maps-based methodologies were the most economical, while the LiDAR-based methodology was the most uneconomical. Overall, the findings provide valuable insights into components of existing methodologies. The findings would benefit practitioners, policymakers, enforcement authorities, vehicle manufacturers, and researchers in choosing an appropriate methodology judiciously. An inventory of road geometric data could also be established to develop an intelligent transportation system (ITS) by combining vehicle, road, and driver in effective communication through information technologies.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134911074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic selection and evaluation of alternative milling types for railway points 铁路点位备选铣削型式的动态选择与评价

IF 0.8 4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-08-16 DOI: 10.1680/jtran.23.00069

Yang Cao, Weihua Zhao, Jiaofeng Li, Xiaohan Ding, Hao Shi

{"title":"Dynamic selection and evaluation of alternative milling types for railway points","authors":"Yang Cao, Weihua Zhao, Jiaofeng Li, Xiaohan Ding, Hao Shi","doi":"10.1680/jtran.23.00069","DOIUrl":"https://doi.org/10.1680/jtran.23.00069","url":null,"abstract":"The milled shape of point blades is one of the main factors causing structural problems with railway points (also known as turnouts or switches). Choosing the right type of milling for point blades can improve train running performance. Based on wheel–rail system dynamics, a vehicle–points dynamic model with various milling methods was established, from which a selection and evaluation method for milling was proposed. The service performance of four milling types was compared and combined with point blade robustness to provide a comprehensive evaluation. It was found that a small rate of railhead width change for an oblique tangent point blade resulted in better running performance of trains. The oblique secant point blade caused an abrupt change in the rail layout, which reduced train running steadiness. The railhead widths of longitudinal secant and longitudinal secant–oblique tangent point blades increased quickly, and the corresponding dynamic responses were at an intermediate level. The proposed selection and evaluation method for milling types took into account the dynamic characteristics and structural durability of the points. It will be beneficial in selecting an appropriate milling type for points blades according to their service requirements.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86361183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editorial: Embracing the opportunities of sustainable transportation for a better future 社论:拥抱可持续交通的机遇，创造更美好的未来

IF 0.8 4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-08-01 DOI: 10.1680/jtran.2023.176.5.261

Lingyun You, Zhengwu Long

引用次数: 0

Effective utilization of waste cement concrete dust in bituminous concrete 沥青混凝土中废水泥混凝土粉尘的有效利用

IF 0.8 4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-07-25 DOI: 10.1680/jtran.23.00045

Jayvant Choudhary, Gaurang Asthana, Mayank Sukhija, V. Wagh, Chayan Gupta

引用次数: 0

Using data to develop cost-effective battery-swap networks for electric vehicles 利用数据为电动汽车开发具有成本效益的电池交换网络

IF 0.8 4区工程技术

Proceedings of the Institution of Civil Engineers-Transport Pub Date : 2023-07-20 DOI: 10.1680/jtran.23.00050

Lei Zhang, Pengfei Xia, Lijia Peng, Chengwei Yang, Jianwu Li, Jianxin Lin

{"title":"Using data to develop cost-effective battery-swap networks for electric vehicles","authors":"Lei Zhang, Pengfei Xia, Lijia Peng, Chengwei Yang, Jianwu Li, Jianxin Lin","doi":"10.1680/jtran.23.00050","DOIUrl":"https://doi.org/10.1680/jtran.23.00050","url":null,"abstract":"Electric vehicle development faces the challenges of range anxiety and the high construction and operating costs of charging and battery-swap infrastructure. To address these issues, this paper describes a proposed battery swap network comprising battery-swapping-van service points and battery-swap stations to provide local, fast and cost-effective battery-swapping services. A data-driven approach was developed to analyse and model vehicle trajectory data to obtain realistic battery-swap demand distributions. An optimisation model based on location cover was then developed to minimise the cost of a battery-swapping network using a greedy algorithm. Real traffic network driving distance was adopted to improve authenticity and accuracy. In a case study, a battery-swapping network used a one-week trajectory dataset of taxis in Beijing and tested the effects in eight scenarios. The results showed that the mesh size of service points, service radius and coverage rate all had an impact on service quality and cost. It is concluded that a battery-swapping network could be cost-effectively deployed by adjusting these parameters to suit the needs of electric vehicles at different development stages. This paper provides useful a reference for decision-makers and operators to formulate policies and strategies.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"6 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87618577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0