Numerical Simulation On Bearing Characteristics Of Tunnel‑Type Anchorage Of A Grand Bridge Over Qingjiang River,
2024
CCCC Second Harbor Engineering Survey and Design Institute Co .， Ltd.， Wuhan ， Hubei 430074 ， China
Numerical Simulation On Bearing Characteristics Of Tunnel‑Type Anchorage Of A Grand Bridge Over Qingjiang River, Yin Hongmei, Shi Qian, Zhang Yihu
Journal of China & Foreign Highway
This paper took the tunnel-type anchorage on the left bank of a grand bridge over the Qingjiang River as an example and established a three-dimensional geological generalization model based on the engineering geological analysis.In addition，the paper used different software to realize the approximate grid discrete division of complex rock mass and tunnel-type anchorage structure.FLAC3D software was used to simulate different working conditions，and the deformation characteristics and bearing capacity of the tunnel-type anchorage were obtained.It is found that the potential failure mode of the tunnel-type anchorage is that the anchor and the rock mass cut by the structural plane on the …
Expressway Traffic Flow Prediction Based On Data From Multiple Related Toll Stations,
2024
School of Transportation ， Fujian University of Technology ， Fuzhou ， Fujian 350118 ， China
Expressway Traffic Flow Prediction Based On Data From Multiple Related Toll Stations, Zhang Yang, Yao Fangyu, Yang Shumin
Journal of China & Foreign Highway
The strong inter-economic connection makes a spatial correlation between traffic data from multiple related toll stations between urban cluster regions，and an accurate description of this connection can improve the accuracy of expressway traffic flow prediction.However，due to many uncertainties，the correlation is difficult to be captured and quantified.To solve this problem，an ATGCN-ResGRU deep learning-based expressway traffic flow prediction method was proposed.By combining attention mechanisms，three graph convolutional networks （GCN ） topological networks with high，medium，and low attention levels were constructed，and spatial learning data was obtained according to the weighted attention level of each network.The connection of multiple related toll stations was quantified and graded.At …
Study On Length Of Deceleration Lane Of Left Off‑Ramp For Urban Underground Interchanges Based On Traffic Conflicts,
2024
Wuhan Urban Railway Construction Investment & Development Co .， Ltd.，Wuhan 430061 ，China
Study On Length Of Deceleration Lane Of Left Off‑Ramp For Urban Underground Interchanges Based On Traffic Conflicts, Wang Hailiang, Cheng Chong, Guan Hong, Ding Naikan
Journal of China & Foreign Highway
To set a reasonable range of the length of the deceleration lane in the diverge area of the left off-ramp for urban underground interchanges，the effects of the length of the deceleration lane，as well as interactions between traffic volumes and design speeds of mainline and ramp on traffic conflict in the diverge area，were exami ned.By taking the underground interchange of the Wuhan East-South Lakes Tunnel Project as an example，the VISSIM micro traffic simulation test was carried out，and the conflict rate （RCR） and exposed time to collision （TTET） were extracted.The results show that ① when the length of the deceleration lane increases，the …
Study On Safety Risk Assessment System For Waste Dump Of Mountainous Expressways,
2024
Yunnan Key Laboratory of Digital Communications ， Broadvision Engineering Consultants ， Kunming ， Yunnan 650041 ， China
Study On Safety Risk Assessment System For Waste Dump Of Mountainous Expressways, Ye Xian, Yin Hao, Zhao Xin, Wang Guanqun, Gao Yu
Journal of China & Foreign Highway
The safety of waste dump projects of mountainous expressways is related to environmental protection，water and soil conservation，highway building protection，and downstream environment-sensitive point protection，so it is necessary to put forward safety assessment methods.Based on the data analysis of 1 369 waste dumps in Yunnan Province，the safety risk factors of the waste dump engineering were proposed and summarized as five primary indicators，including site selection and design factors，construction factors，regional geological factors，external influencing factors，and data integrity factors，and 18 secondary indicators were further put forward.The group decision-making analytic hierarchy process （AHP ） model was established，and the weight of secondary indexes was determined by 64 technical …
Carbon Emission Calculation And Scheme Selection For Roadbed Drainage Ditches By Mechanized Construction,
2024
The Fourth Engineering Company of China Railway Seventh Group Co .， Ltd.， Wuhan ， Hubei 430074 ， China
Carbon Emission Calculation And Scheme Selection For Roadbed Drainage Ditches By Mechanized Construction, Xing Hao, Wu Jiarun, Li Han, Lin Yuliang, Guo Dongdong
Journal of China & Foreign Highway
Aligned with the peak carbon and neutrality goals，the mechanized construction of roadbed drainage ditches should consider not only construction efficiency and economic factors but also carbon emissions.This study，centered on the Meng-LYU highway，devised approaches to calculate roadbed drainage ditches' carbon emissions and investment costs across three stages：building material production，transportation，and construction.By introducing the concept of carbon trading to align carbon emissions and investment costs，a comprehensive comparison was conducted between the conventional supporting formwork method and the hydraulically powered sliding formwork method regarding equivalent carbon emissions.An orthogonal experiment was conducted involving the upper length of the roadbed drainage ditch，pouring thickness，haul distance，and construction length …
Technical Essentials Of Road Geometric Design In Serbia,
2024
China Railway Design Corporation ， Tianjin 300142 ， China
Technical Essentials Of Road Geometric Design In Serbia, Xu Da, Yang Xueyong, Yuan Yingshuang, Chen Dongsheng
Journal of China & Foreign Highway
With the continuous advancement of China's Belt and Road Initiative，more and more Chinese enterprises are participating in the construction of engineering projects in Central and Eastern Europe，which brings some challenges for designers to master and use local codes for engineering design and consultation.According to the concrete practice of road reconstruction design of Hungary-Serbia Railway （Serbia section ），the application of horizontal and vertical indexes in road geometric design in Serbian was summarized.It is found that road design in Serbian has perfect design standards and systems.The Serbian code and the Chinese code are relatively close in terms of road geometric design standards，and …
Analysis On Design Concept Of Subgrade And Pavement Of Colombia High‑Grade Highway,
2024
CCCC First Highway Consultants Co .， Ltd.， Xi'an ， Shaanxi 710075 ， China
Analysis On Design Concept Of Subgrade And Pavement Of Colombia High‑Grade Highway, Liu Tao, Hu Guanhua, Yuan Yi
Journal of China & Foreign Highway
Colombian highway design predominantly adheres to American Standards，emphasizing design concepts reflective of the United States while encompassing Colombia's engineering design habits，concepts，and characteristics.This paper introduced the main design schemes of the Colombia MAR 2 Highway Project in northern Colombia，including protection engineering，drainage engineering，subgrade filling，spoil ground，and pavement.It conducted a comparative analysis between Colombian and Chinese design concepts，highlighting similarities and disparities，and put forward the thinking of mutual learning.
Scrutinizing The Adoption Of Smart Contracts In The Mena Region’S Construction Industry,
2024
The British University in Egypt
Scrutinizing The Adoption Of Smart Contracts In The Mena Region’S Construction Industry, Ahmed Gouda Mohamed
Civil Engineering
The construction industry embodies a paramount role in the economic growth of various nations, including the Middle East and North Africa (MENA) region. Despite its significance, the industry faces construction disputes and payment issues, inducing financial losses and project postponements. Consequently, the construction industry has mutated smart contracts to enhance operational efficiency, which automates contract management tasks and offers perks, including transparency and efficiency. However, the adoption of smart contracts in the MENA construction sector remains limited, and the region lacks thorough research on this topic. This study addresses this gap by examining the level of cognizance and apprehension of …
104. I-69 Orx Section 3: Completing The Connection,
2024
Purdue University
104. I-69 Orx Section 3: Completing The Connection, Steven Nicaise
Purdue Road School
The I-69 Ohio River Crossing (ORX) will be a key, final connection of I-69 between Evansville, Indiana and Henderson, Kentucky. The transformational project includes three contracts, two states and one much-anticipated new river crossing. In this session, you will hear an update on the ORX project as a whole and learn about I-69 ORX Section 3.
28+1 Bridge Preservation: From Silane To Epoxy Best Practices,
2024
Advanced Chemical Technologies, Inc.
28+1 Bridge Preservation: From Silane To Epoxy Best Practices, Brad Ehle
Purdue Road School
Attendees will gain a comprehensive understanding of early prevention using penetrating Silane through the 20- to 25-year lifecycle of complimenting epoxy, LMC and other rehabilitative overlay methods, and managing temperature and viscosity for improved application and performance. This session summarizes county and state best practice in the Midwest region.
Work Zone Safety Fundamentals And Best Practices,
2024
INDOT
Work Zone Safety Fundamentals And Best Practices, Mischa Kachler
Purdue Road School
Join us for a discussion of fundamental principles and best practices of temporary traffic control (TTC) that promote work zone safety. This session will cover topics that designers should know and consider when developing TTC plans. Attendees who will most benefit from this session are designers new to TTC and experienced designers looking for a refresher.
Purple Line Bus Rapid Transit Project Overview,
2024
HNTB
Purple Line Bus Rapid Transit Project Overview, Michael Schneider, Rachel Wilson
Purdue Road School
The Purple Line will be Indianapolis’ second Bus Rapid Transit (BRT) Line, opening for revenue service in the fall of 2024. It will provide rapid transit service along 15.2 miles of E. 38th Street and Post Road, between Indianapolis and Lawrence, for a total cost of $188 million. This presentation will provide an overview of IndyGo’s overall capital program with a focus on the Purple Line project—its unique design features and successful project delivery—from design through construction.
Demystifying Utility Coordination: Understanding The Basics,
2024
Missouri University of Science and Technology
Demystifying Utility Coordination: Understanding The Basics, Josshe I. Palm
Purdue Road School
This session will explain utility coordination to non-utility coordinators. It will help educate others about the role and responsibilities of a utility coordinator, an OSA, easy UC and design mistakes to avoid, scope and design considerations, items commonly overlooked, when to coordinate SUE, and how to work with your UC to request a letting adjustment. We will also highlight UC submittals and allow time for questions about the UC’s role in a project’s success.
Assessment Of Educational Facilities In Osogobo Metropolis Nigeria,
2024
Osun State University, Nigeria
Assessment Of Educational Facilities In Osogobo Metropolis Nigeria, Dele S. Ogundahunsi, Martins B. Gasu, Samuel B. Adedotun, Olayiwola Olayode, Akintayo O. Ojo, Christiana Olayode
CSID Journal of Infrastructure Development
This study assessed educational facilities in the Osogbo metropolis, Nigeria, aiming to evaluate the available educational facilities, examine student and staff satisfaction levels, and analyze their availability across schools in the area. The sample consisted of 476 schools, from which 73 were randomly selected. A multistage sampling procedure was employed to sample 1,863 pupils/students and 87 teachers for questionnaire administration, complemented by observation. Data were analyzed using Mean Weighted Average, Summation of Weighted Value, and Analysis of Variance. Findings showed that 63.4% of primary schools had the listed facilities, while 75% of secondary schools reported 81% availability. Public primary school …
Root And Causes Of Skilled Labor Shortage In Construction Industry: Comprehensive Literature Review,
2024
Louisiana State University
Root And Causes Of Skilled Labor Shortage In Construction Industry: Comprehensive Literature Review, Nicholas Hardy, Carolina Barbosa-Resende, James Kereri, Arash Taghinezhad
The Professional Constructor
The skilled labor shortage is well documented from a historical perspective via studies focusing various construction trades such as carpentry, mechanical, electric and plumbing, and tile setters. Causes of such shortages such as industry image, college as a preferred choice after high school, and construction being a last resort have been investigated extensively. Consequently, possible solutions ranging from amplifying shop classes in high school to intensifying recruiting efforts for union training programs have all been addressed throughout the last 40 years. However, recent studies have focused on identifying the magnitude and reach of the skilled labor gap while limited attention …
Sustainability Of Apparel Exporting Industry Facilities In South Asia,
2024
Michigan State University
Sustainability Of Apparel Exporting Industry Facilities In South Asia, Sree L. Anilkuma, George H. Berghorn, M.G. Matt Syal
The Professional Constructor
The apparel industry’s contribution to the gross domestic product in South Asian countries is significant and provides livelihoods for millions of people in this region. Although this industry’s contribution towards the economy is substantial, its negative impact on the environment and the working conditions have always been critical issues of concern. The two countries of emphasis in this research, Bangladesh, and India, have experienced numerous garment factory accidents in the form of building collapses, factory fires, and boiler explosions, which have killed and injured thousands of workers. These incidents have brought attention on the need to improve poor facilities and …
Taxonomy Of Trust And Maslow’S Hierarchy Of Needsin The Construction Industry,
2024
Clemson University
Taxonomy Of Trust And Maslow’S Hierarchy Of Needsin The Construction Industry, Ann B. Lyons, Vivek Sharma, Shima Clarke
The Professional Constructor
Trust is vital in every facet of life, enabling collaborative efforts and valuing contributions from various individuals. This is particularly true in the construction industry, where teamwork is essential for success. Prior research has consistently demonstrated that heightened trust levels significantly contribute to better project outcomes and increased client satisfaction. Despite its critical role, the construction industry has yet to adopt a structured hierarchical perspective of trust that aligns with its unique demands. This study aims to fill this gap by validating a comprehensive taxonomy of trust specifically designed for the construction sector. Through literature review, this study identifies key …
Building Services Engineering March/April 2024,
2024
Technological University Dublin
Building Services Engineering March/April 2024
Building Services Engineering
No abstract provided.
A Statistical Analysis Of Phased Construction Projects,
2024
Air Force Institute of Technology
A Statistical Analysis Of Phased Construction Projects, Timothy M. Dejong
Theses and Dissertations
The construction industry is known for exceeding target budgets and schedules, and Department of Defense projects are no exception. The Air Force Installation & Mission Support Center (AFIMSC) manages a budget of $3.14 billion to repair, alter, demolish, and maintain Air Force facilities. However, an ever-increasing backlog of maintenance and repair work and a consistently underfunded repair program pose an increased financial risk to the sustainability of the construction and repair program. Phasing large construction efforts is a potential strategy that has recently been used to yield efficiencies by AFIMSC program managers. This study presents a statistical analysis of phased …
Optimizing Hub And Spoke Selections For Adaptive Basing In Agile Combat Employment,
2024
Air Force Institute of Technology
Optimizing Hub And Spoke Selections For Adaptive Basing In Agile Combat Employment, Alan Heng
Theses and Dissertations
Advancing technologies and emerging competitors within the Indo-Pacific region have rendered the use of fixed installations for United States Air Force (USAF) operations less than optimal for generating airpower. The adoption of Agile Combat Employment (ACE) is imperative and emphasizes a hub-and-spoke model. However, the methodology for selection of contingency locations remains undecided. Current selection of optimal sites hinges on an optimization framework, employing either rank-based or mathematical approaches that consider various criteria to assess and quantify each location. These criteria are then addressed through objectives and constraints, forming the basis for an effective decision-making process. This paper introduces two …
