Fragilit Y Analysis Of Continuous Rigid Frame Bridge With High Piers And Long Span Subjected To Near‑Field Earthquakes,
2024
Gansu Luqiao Highway Investment Co .， Ltd.， Lanzhou ， Gansu 730050 ， China
Fragilit Y Analysis Of Continuous Rigid Frame Bridge With High Piers And Long Span Subjected To Near‑Field Earthquakes, Sun Yongjiang
Journal of China & Foreign Highway
Near-field earthquakes are more destructive to the continuous rigid frame bridge with high piers and long span.Based on a new-built continuous rigid frame bridge with high piers and long span，considering the seismic demand probability of bridges under near-field earthquakes，this paper utilized OpenSees to analyze the time history of the bridge.The structure response of the bridge under near-field earthquakes was obtained by the nephogram method，and the vulnerability of the bridge under earthquake was analyzed based on the curvature demand probability model of the structure.The results show that the probability response of curvature demand of a continuous rigid frame bridge with high …
Prediction Method Of Surrounding Rock Deformation Of Highway Tunnels Based On Bayes‑Lstm,
2024
CCCC First Highway Consultants Co .， Ltd.， Xi'an ， Shaanxi 710076 ， China
Prediction Method Of Surrounding Rock Deformation Of Highway Tunnels Based On Bayes‑Lstm, Liu Zhi, Li Xinyu, Li Zhen, Kong Xianguang, Chang Jiantao
Journal of China & Foreign Highway
In the process of highway tunnel construction，the stability of surrounding rock has a great impact on tunnel construction.Therefore，the monitoring measurement and accurate prediction of surrounding rock deformation of highway tunnels are the keys to ensuring the safety of tunnel construction.In view of the low prediction accuracy and poor generalization ability of tunnel surrounding rock deformation，this paper proposed a Bayesian （Bayes ）-based method to optimize the long-term and short-term memory （LSTM ） network.The method first preprocessed the original monitoring data of crown settlement and peripheral convergence，then constructed the initial LSTM model of crown settlement and peripheral convergence of highway tunnels，and used …
Research On Shape Optimization Of Four‑Center Circular Highway Tunnel Based On Parametric Modeling Idea,
2024
CCCC Tunnel and Bridge （Nanjing ） Technology Co .， Ltd.， Nanjing ， Jiangsu 211800 ， China
Research On Shape Optimization Of Four‑Center Circular Highway Tunnel Based On Parametric Modeling Idea, Zhu Lei, Guo Meng, Guo Jinyong, Shen Caihua, Zhang Hanyi
Journal of China & Foreign Highway
The rational cross-sectional form of the four-center circular highway tunnel contributes to enhancing the stress state of the lining structure，reducing cracks in the composite lining，and enhancing the durability of the tunnel structure.Utilizing the Ansys APDL programming platform and guided by the design principle of continuous-curvature，a parametric modeling equation for the geometrical dimensions of local tunnel shape in arch foot area was established.The calculation method and numerical simulation models for the equivalent mechanical parameters of the anchor reinforcement area were also developed.The study revealed the impact of the local tunnel shape parameter design in the arch foot area on the internal …
Test On Water Mist Wrapped Dust Reduction Technology For Tunnels,
2024
CCCC Second Highway Engineering Co .， Ltd， Xi'an ， Shaanxi 710065 ， China
Test On Water Mist Wrapped Dust Reduction Technology For Tunnels, Wang Yijun, Wang Fei, Jia Yuedi, Pan Weihua, He Xingchun, Yao Wenhui
Journal of China & Foreign Highway
In order to eliminate the dust produced by tunnel blasting more quickly and effectively，two kinds of mist spray and dust reduction schemes were put forward，which were the “air duct water mist wrapped type ” and the “vehicle-mounted water mist wrapped type ”.The field test was carried out on Jiaoding Tunnel in Yunnan.The results show that for the dust reduction technology scheme of “air duct water mist wrapped type ”，the dust concentration of the No.1 characteristic position at the tunnel face decreases to 3.87 mg/m3 after 10 minutes of dust reduction，which meets the specification requirements.For the dust reduction technology of “vehicle-mounted …
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.
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.
Confessions Of A Former Vision Zero Coordinator,
2024
Purdue University
Confessions Of A Former Vision Zero Coordinator, Maria Cantrell
Purdue Road School
Maria Cantrell, P.E. served as the City of Columbus Vision Zero Coordinator from 2019 to 2023. She lead the development of the City’s multiagency plan and program intended to eliminate fatal and serious injury crashes. Learn about what efforts and strategies worked, what didn’t, and a few pointers picked up along the way.
Maximize Drainage Design With Bentley Openroads Technology,
2024
HNTB
Maximize Drainage Design With Bentley Openroads Technology, Nathan A. Goins, Jennifer Basham
Purdue Road School
Whether you’re creating brand new drainage networks or tying into existing networks, learn how to maximize your efficiency with Bentley’s OpenRoads Drainage and Utilities (SUDA) Technology. We’ll explore tips, tricks, and lessons learned using this improved tool for drain-age design on INDOT projects.
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.
Indiana Design Manual Chapter 46 Updates,
2024
Indiana Department of Transportation
Indiana Design Manual Chapter 46 Updates, Nathaniel Shellhamer, Taylor Ruble
Purdue Road School
INDOT is working on a total revision of Chapter 46 “Intersections at Grade” of the Indiana Design Manual (IDM). These revisions address numerous longstanding concerns with the way intersections are designed in Indiana and also contribute design information for alternative intersections.
Demystifying Traffic Engineering For The Rest Of Us,
2024
Indiana Department of Transportation
Demystifying Traffic Engineering For The Rest Of Us, Nathaniel Shellhamer, David Reamer
Purdue Road School
Have you ever uttered the phrase “I’m not a traffic engineer”? When traffic engineers go off on a tangent, can it start to sound like a foreign language? This session is for you! We will break down traffic engineering concepts, such as innovative intersections, traffic analysis buzzwords and acronyms, and more. This session will be geared towards non-traffic engineers and anyone else who might explain these concepts to the traveling public.
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.
Analyzing Video And Isobus Data To Understand Risk And Safety Practices For Roadside Mowing,
2024
Purdue University
Analyzing Video And Isobus Data To Understand Risk And Safety Practices For Roadside Mowing, Nathan Sprague, Timothy Wiegman, J. T. Evans
Graduate Industrial Research Symposium
In Indiana, roadside mowing covers 11,200 miles, presenting significant risks. The Indiana Department of Transportation (INDOT) seeks safer methods, including automated evaluations and autonomous robots. Analyzing 120 hours of video and ISOBUS data, we quantify mower interactions with the road and obstacles, finding mowers on -road up to 91% of the time in rural areas and 57% on highways. Key obstacles identified include signs and posts. This research aids in developing risk assessment models and safety evaluations, aiming to improve mowing safety and efficiency, and it supports future development of autonomous mowing technologies.
