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The Application of Design Thinking and Project-Based Learning in Human-Computer Interaction Courses for construction engineering Students

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Journal of civil engineering Education 2024年第2期150卷

作者： Tsai, Meng-Han Dept. of Civil and Construction Engineering National Taiwan Univ. of Science and Technology Taipei10607 Taiwan

This research describes a case study of an integrated human-computer interaction (HCI) course for construction engineering students using project-based learning and experiential learning cycle methods. To help engineering students keep pace with the increasing use of information technology (IT) in the construction industry, educational institutions have started to add IT-related courses to their civil engineering curriculum. However, these courses usually focus more on fundamental knowledge and technical skills such as programming and system development, and the design of HCI, which plays one of the most critical roles in the IT field, has been rarely discussed in current training programs. Therefore, this research developed a HCI course that focuses on helping students cultivate nontechnical skills, such as communication and teamwork. The developed course was implemented as a graduate-level course at the National Taiwan University of Science and technology. Based on the feedback collected from students, the HCI course did help them identify real problems through interacting with potential users and developing corresponding solutions using IT. Students also felt that such a learning package did help them gain tangible experience identifying real problems by interacting with potential users, brainstorming possible solutions with their peers, and developing corresponding solutions by using new technologies. © 2023 American Society of civil Engineers.

关键词： engineering education

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Advancing Pavement Distress Detection in Developing Countries: A Novel Deep Learning Approach with Locally-Collected Datasets

arXiv

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arXiv 2024年

作者： Kyem, Blessing Agyei Denteh, Eugene Kofi Okrah Asamoah, Joshua Kofi Tutu, Kenneth Adomako Aboah, Armstrong North Dakota State University Department of Civil Construction and Environmental Engineering United States Kwame Nkrumah University of Science and Technology Department of Civil Engineering Ghana Kwame Nkrumah University of Science and Technology Department of Civil Engineering Ghana North Dakota State University Department of Civil Construction and Environmental Engineering United States

Road infrastructure maintenance in developing countries faces unique challenges due to resource constraints and diverse environmental factors. This study addresses the critical need for efficient, accurate, and locally-relevant pavement distress detection methods in these regions. We present a novel deep learning approach combining YOLO (You Only Look Once) object detection models with a Convolutional Block Attention Module (CBAM) to simultaneously detect and classify multiple pavement distress types. The model demonstrates robust performance in detecting and classifying potholes, longitudinal cracks, alligator cracks, and raveling, with confidence scores ranging from 0.46 to 0.93. While some misclassifications occur in complex scenarios, these provide insights into unique challenges of pavement assessment in developing countries. Additionally, we developed a web-based application for real-time distress detection from images and videos. This research advances automated pavement distress detection and provides a tailored solution for developing countries, potentially improving road safety, optimizing maintenance strategies, and contributing to sustainable transportation infrastructure development. © 2024, CC BY.

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study on the Distribution Law of Vertical Earth Pressure in the construction of a Metro Station using PBA Method in a Loess Stratum

study on the Distribution Law of Vertical Earth Pressure in ...

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2022 International Conference on Advanced Manufacturing technology and Manufacturing Systems, ICAMTMS 2022

作者： Shang, Xuexuan Wang, Shaoxiong Yao, Hanjuan Lei, Qi Zheng, Xuanrong Chen, Qingmi Yang, Kang Shaanxi Construction Engineering Group Company Limited China Department of Architecture and Civil Engineering Xi'an University of Science and Technology Shaanxi Xian710054 China

ISBN: (纸本)9781510656840

The PBA method is essential to master vertical earth pressure distribution law in the subway station construction in the loess layer. Based on the engineering background of the Hejiaying Station of Xi'an Metro, this paper investigates the vertical earth pressure distribution of headings and buckle arches under different construction sequences based on numerical simulation and compares them with measured on-site data. The research results indicate the following. (1) The vertical earth pressure at the arch springing of headings A and D in the upper layer is approximately 1.06 times the vertical earth pressure at the arch crown. Moreover, the vertical earth pressure at the arch springing of headings B and C in the upper middle is approximately 1.015 times the vertical earth pressure at the arch crown, signifying that the vertical earth pressure at the middle heading B and C is more evenly distributed. (2) Comparing the different excavation sequences of the same layer of caves, the two sequences "excavating the upper layer first and then the lower layer" and "excavating the lower layer first and then excavating the upper layer" have a more significant impact on the vertical earth pressure of the headings. The heading initially excavated bears the slightest vertical earth pressure. (3) If Scheme 2 is applied to construct the buckle arch, the vertical earth pressure at the junction of the buckle arch and the heading is relatively large, approximately 1.69 times the vertical earth pressure of the buckle arch. Meanwhile, if Scheme 1 is applied for buckle arch construction, the force on the upper part of the buckle arch is relatively uniform. However, the earth pressure on the top of the arch is more significant than that of Scheme 2. It signifies that the earth pressure at the middle part of the arch is mainly transferred to the two ends of the arch when construction is performed using Scheme 2. © 2022 SPIE.

关键词： Arches

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Experimental study on the infrared precursor characteristics of gas-bearing coal failure under loading

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International Journal of Mining Science and technology 2021年第5期31卷 901-912页

作者： Shan Yin Zhonghui Li Dazhao Song Xueqiu He Liming Qiu Quan Lou He Tian School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China School of Safety Engineering China University of Mining and TechnologyXuzhou 221116China School of Municipal and Environmental Engineering Henan University of Urban ConstructionPingdingshan 467036China

The stress and gas pressure in deep coal seams are very high,and instability and failure rapidly and intensely *** is important to study the infrared precursor characteristics of gas-bearing coal instability and *** this paper,a self-developed stress-gas coupling failure infrared experimental system was used to analyse the infrared radiation temperature(IRT)and infrared thermal image precursor characteristics of gas-free coal and gas-bearing *** changes in the areas of the infrared temperature anomalous precursor regions and the effect of the gas on the infrared precursors were *** results show that high-temperature anomalous precursors arise mainly when the gas-free coal fails under loading,whereas the gas-bearing coal has high-temperature and low-temperature anomalous *** area of the high-temperature anomalous precursor is approximately 30%–40%under gasbearing coal unstable failure,which is lower than the 60%–70%of the gas-free *** area of the low-temperature abnormal precursor is approximately 3%–6%,which is higher than the 1%–2%of the gas-free *** increasing gas pressure,the area of the high-temperature anomalous precursor gradually decreases,and the area of the low-temperature anomalous precursor gradually *** highand low-temperature anomalous precursors of gas-bearing coal are mainly caused by gas desorption,volume expansion,and thermal *** presence of gas inhibits the increase in IRT on the coal surface and increases the difficulty of infrared radiation(IR)monitoring and early warning for gas-bearing coal.

关键词： Gas–bearing coal Gas pressure Infrared temperature Infrared thermal image Infrared precursory law

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Delivery of e-waste recycle plant using sustainability approach in Sub-Saharan Africa

Delivery of e-waste recycle plant using sustainability appro...

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IEEE International Conference on Emerging & Sustainable Technologies for Power & ICT in a Developing Society (NIGERCON)

作者： Chikezirim Okorafor Department of Civil Engineering & Construction Studies Durban University of Technology Scottsville South Africa

ISBN: (数字)9798331542559

ISBN: (纸本)9798331542566

Electronic waste refers to the discarded and outdated electronic gadgets that are no longer functional. Primarily, the waste consists of reused, poisonous, and hazardous materials that are discharged into the environment. The quick obsolescence and limited lifespan of electronic devices have led to a significant rise in e-waste in Sub-Saharan Africa, with little attention being given to the consequences of this issue. Therefore, it is crucial to prioritize the implementation of e-waste recycling plant projects in this scenario. The proposed method of comprehending the intricacies of e-waste recycling plant projects is emphasized and examined. The research paper suggests an environmentally-friendly structure for implementing e-waste recycling facilities in sub-Saharan Africa. The proposed framework elucidates the interconnection among various elements of e-waste recycling facilities, and the significance of the suggested framework for future research is examined.

关键词： Hazardous materials Humanities Africa Electronic waste Aging Recycling Sustainable development

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Assessing the large-scale climate predictor Southern Oscillation Index (SOI) for spring streamflow variability in Victoria: An artificial intelligence approach

Assessing the large-scale climate predictor Southern Oscilla...

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2024 Hydrology and Water Resources Symposium, HWRS 2024

作者： Bani, Sabrina Imteaz, Monzur Hossain, Iqbal Department of Civil and Construction Engineering Swinburne University of Technology HawthornVIC3122 Australia

ISBN: (纸本)9781925627893

Accurate prediction of streamflow during the spring months (September, October, November) is critical for effective water resource management in Victoria, Australia, a region characterized by significant climate variability. Traditional models often fail to discover the nonlinear relationships between large climate predictors and streamflow, limiting their practical utility. This study introduces a novel approach by employing Artificial Neural Networks (ANN) and using the Levenberg-Marquardt algorithm to predict streamflow variability during the spring months across nine stations in east, west, and central Victoria. The integration of the Southern Oscillation Index (SOI) as a primary predictor across multiple lag periods (1 month, 3 months, and 6 months) enhances the model's predictive capabilities. Historical monthly streamflow data and SOI values from 1966 to 2023 were normalized and analysed. The ANN models, developed using MATLAB's Neural Network Toolbox, consisted of an input layer, one hidden layer, and an output layer. The Levenberg-Marquardt algorithm was employed to train the network, and model performance was evaluated using statistical measures such as Mean Square Error (MSE), Root Mean Square Error (RMSE), Mean Absolute Error (MAE), and the correlation coefficient (R). The ANN models exhibited varying degrees of accuracy across the nine streamflow stations, with R values ranging from 0.33 to 0.80, indicating low to moderate predictive accuracy. Mid-term predictions were particularly more accurate, while the accuracy for longer lag periods was lower. These results features the potential of AI-based models in improving streamflow forecasts and water resource management. Accuracy in short-term forecasts can aid immediate planning, while insights from long-term predictions support strategic decision-making. The study's findings highlight the importance of integrating multiple climate predictors and improving data quality to enhance model robustness and accur

关键词： Water management

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Investigating and determining the crucial construction site supervisory competencies influencing the effectiveness of building construction project activities

International Journal of Industrial Engineering and Operatio...

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International Journal of Industrial engineering and Operations Management 2024年第1期6卷 43-63页

作者： Manoharan, Kesavan Dissanayake, Pujitha Pathirana, Chintha Deegahawature, Dharsana Silva, Renuka Department of Civil Engineering Faculty of Engineering University of Peradeniya Peradeniya Sri Lanka Department of Construction Technology Faculty of Technology Wayamba University of Sri Lanka Kuliyapitiya Sri Lanka Department of Industrial Management Faculty of Applied Sciences Wayamba University of Sri Lanka Kuliyapitiya Sri Lanka Centre for Quality Assurance Wayamba University of Sri Lanka Kuliyapitiya Sri Lanka

Purpose: Sources highlight that insufficient skills of site supervisors considerably influence the progress of many construction projects in numerous countries. This study intends to identify the crucial supervisory competencies that influence the effectiveness of building project operations in the context of developing countries. Design/methodology/approach: The crucial construction site supervisory competencies were qualitatively identified through a comprehensive literature survey and a series of expert interviews with the use of thematic analysis approaches. A questionnaire survey was then carried out among 154 building project firms to quantify the impacts of the competencies on the effectiveness of project tasks with the use of the relative importance index approach. Additionally, industry-consultative meetings were held using problem-focused communication strategies to scrutinise the necessary actions. Findings: Overall, 22 cognitive elements and 24 skills/abilities of supervisors were determined as being critical according to their impact values, where the site supervisors cognitive domains in construction planning and construction materials were determined as the top-ranking competencies in the list, with their manual skills/abilities in labour management and labour performance evaluation. Accordingly, a group of key competency outcomes were produced for the considerations in developing new site supervisory training components. Relevant statistical analysis results and the industry consultative outcomes substantiated the validity and dependability of the overall results. Research limitations/implications: Although the study's focus was to site supervision procedures used in Sri Lankan building construction projects, the overall findings/outcomes might be put to the test in related situations in other emerging industries in other countries. Originality/value: The study has constructed a base that shows how the significant site supervisory competencies influe

关键词： Built environment construction supervision Productivity improvement Training development Work-based competencies

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Experimental investigation on the deformation characteristics of locking-steel-pipe(LSP)pile retaining structure during excavation in sand

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Underground Space 2022年第6期7卷 1098-1114页

作者： Shi Wei Rongzhu Liang Guoxiong Mei M.Hesham El Naggar Lianwei Sun Jinqing Jia Xiaohua Bao Xiaojian Wu Wenbing Wu Faculty of Engineering China University of GeosciencesWuhanHubei 430074China Guangxi Key Laboratory of Disaster Prevention and Engineering Safety College of Civil Engineering and ArchitectureGuangxi UniversityNanningGuangxi 530004China Geotechnical Research Centre Faculty of EngineeringThe University of Western OntarioLondonON N6A 5B9Canada Shanghai Construction Group Co. Ltd.Shanghai 200080China School of Civil Engineering Dalian University of TechnologyDalian 116024China College of Civil and Transportation Engineering Shenzhen UniversityShenzhenGuangdong 518060China

Locking-steel-pipe(LSP)piles connect with adjacent joints to form a pile row enclosure *** to the advantages of quick construction,efficiency in installation,and recycle utilization,the connected LSP piles are frequently used as retaining structure in deep ***,systematic studies of the deformation mechanism of the LSP pile retaining structure are rarely reported,and it still lack of experimental evidence to optimize the *** this study,a braced supported excavation experimental model test in sand was designed and conducted to investigate the deformation characteristics of LSP pile retaining *** dimensional(3D)printing technique was creatively applied to manufacture LSP model *** experimental results show that,a“S”shaped distribution of bending moments is observed along pile shaft when excavation is executed;the deflection of pile shaft develops deep-seated movements toward the excavation side as excavation went deeper,resulting in a“bowl”ground *** the deflection of LSP piles,a rotating trend was occurred between pairs of locking joint,and the severe open deformation of locking joint arose on excavation *** was a gradual reduction in earth pressure behind the LSP pile retaining wall with excavation *** earth pressure between two struts level had no obvious changing,owing to the supported effect of inner struts.

关键词： Locking-steel-pipe(LSP)piles Deep excavation Model test Deformation characteristics Three dimensional(3D)printing

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Analysis of pile-soil-excavation interaction and load transfer mechanism in multi-layered soil for an in-service pile group

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Computers and Geotechnics 2024年 171卷

作者： Bandyopadhyay, Paromeeta Teng, Fuchen Department of Civil and Construction Engineering National Taiwan University of Science and Technology Taipei Taiwan

A three-dimensional numerical analysis is conducted on a group pile adjacent to a deep multi-strutted excavation in a naturally occurring soil profile comprising both cohesive and non-cohesive layers. The contrasting soil layers affect the soil stiffness, strength, and deformation characteristics, thereby impacting the load transfer mechanism within a pile group. The primary aim of this study is to specifically understand how the presence of a non-cohesive soil layer within a predominantly cohesive soil profile, affects the behavior of a pile group during excavation. By systematically varying the position and thickness of the soil layers, the analysis highlights the significance of considering the actual soil profile's inherent heterogeneity rather than assuming a homogeneous clay layer. 19.2% and 17% deviations respectively are observed for pile group settlement and lateral deflection when a homogeneous clay layer is considered instead of the natural soil profile. The findings also show that the position of the non-cohesive soil layer within a predominantly clay soil profile is more critical than its thickness in determining the pile response to excavation-induced changes. The non-cohesive soil layers within the excavation depth, significantly influence the lateral and axial pile behavior, while those below the final excavation depth have a limited impact. A theoretical simplified framework is proposed for the preliminary assessment of the excavation-induced effect on an adjacent pile group. This simplification helps minimize the initial calculation time and effort while capturing the significant factors affecting the pile group behavior near the excavation. © 2024 Elsevier Ltd

关键词： Finite element method

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An Overview of Highway Failure and Its Maintenance on Old NH-2 1

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F-EIR Conference on Environment Concerns and its Remediation, F-EIR 2021

作者： Berwal, Parveen Pal, Maneesh Ali, Ishtiaque Singla, Shilpa Goyal, Rajesh Civil Engineering Department Galgotias College of Engineering and Technology Uttar Pradesh Greater Noida201310 India Civil Engineering Department Sant Longowal Institute of Engineering and Technology Punjab Sangrur148106 India School of Construction Management NICMAR Delhi NCR Bahadurgarh124507 India

ISBN: (数字)9783030962029

ISBN: (纸本)9783030962012

Full-grown transportation infrastructure is very important for social, industrial, cultural, and economic development. The main focus of this paper shows an examination to track down the adaptable asphalt distress and rigid pavement failure types and recognize the causes and select the best maintenance for the disappointment of flexible asphalt along the 10 km distance of old NH-2 (current NH-19) in Fatehpur district in Uttar Pradesh. It includes 8 km flexible pavement and 2 km rigid pavement. There are numerous kinds of distresses that occur in the road like various kinds of breaks, potholes raveling water dying, layering and pushing, misery and rutting. The fundamental driver of flexible asphalt is poor mixing of bituminous, heavy loads, poor drainage conditions, and heavy rainfall. The failures are removed by adequate planning, inspection, and treatment. These failures create problems for motorists, passengers and also increase cost maintenance. National highway authority of India suggests that to try maintenance regularly with the needs of critical support and accessibility of assets. Which is found during this examination. The present study identifies the different types and classifications of faults in flexible pavements and the sources of these faults and how to correct them also the current pavement flaws and associated maintenance procedures. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Asphalt

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