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Influence of traffic on the temperature field of tunnel in cold region:A case study on the world’s longest highway spiral tunnel

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Underground Space 2023年第1期8卷 196-209页

作者： Yifan Jiang Jianyou Yu Ping Zhou Feicong Zhou Jiayong Lin Jinyi Li Ming Lin Feiya Lei Zhijie Wang Key Laboratory of Transportation Tunnel Engineering Ministry of EducationSouthwest Jiaotong UniversityChengduSichuan 610031China School of Civil Engineering Southwest Jiaotong UniversityChengduSichuan 610031China project office of yanchong highway Zhang JiakouHebei 075000China Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversitySichuan 611756China Infrastructure Operations Department of West China Hospital Sichuan UniversityChengduSichuan 610000China

The impact of the piston wind caused by vehicle traffic on the temperature field distribution of the tunnel cannot be ignored,especially in spiral tunnels,where the temperature field distribution is more complicated than that in straight tunnels.Based on the world’s longest highway spiral tunnel,this study explores the influence of traffic on the temperature fields of spiral and straight tunnels,and proposes a new design method for laying length of insulation layer.The results show that traffic has a significant effect on the temperature field dis-tribution in the tunnel.The influence degree of different traffic elements decreases in the following order:average vehicle speed>daily traffic>morning rush hour>evening rush hour.The temperature field distribution of spiral tunnels is asymmetry on the left and right compared with straight tunnels,while the influence degree of traffic on the outside of spiral tunnels is similar to that of straight tunnels.Due to the difference of wind direction and traffic direction at different tunnel openings,an asymmetric insulation layer laying method is proposed.It is suggested that the lengths of the insulation layers of the Jinjiazhuang Tunnel should be 1200 m for the right tunnel inlet,700 m for the right tunnel outlet,700 m for the left tunnel inlet,and 1400 m for the left tunnel outlet.

关键词： highway spiral tunnel Vehicle traffic Cold Region Temperature field Length of insulation layer

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Bird’s-eye view of recycled solid wastes in road engineering

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Journal of Road Engineering 2024年第2期4卷 93-150页

作者： Zhuangzhuang Liu Tengteng Feng Xingyi Zhu Jie Gao Kui Hu Meng Guo Fan Gu Feng Li School of highway Chang'an UniversityXi'an 710064China Key Laboratory for Special Area highway Engineering of Ministry of Education Chang'an UniversityXi'an 710064China Key Laboratory of Road and Traffic Engineering of Ministry of Education Tongji UniversityShanghai 200092China School of Civil Engineering and Architecture East China Jiaotong UniversityNanchang 330013China College of Civil Engineering and Architecture Henan University of TechnologyZhengzhou 450001China State Key Laboratory of Bridge Engineering Safety and Resilience Beijing University of TechnologyBeijing 100124China Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing 100124China School of Traffic&Transportation Engineering Changsha University of Science and TechnologyChangsha 410114China School of Transportation Science and Engineering Beihang UniversityBeijing 102206China

Recent trends in road engineering have explored the potential of incorporating recycled solid wastes into infrastructures that including pavements,bridges,tunnels,and accessory structures.The utilization of solid wastes is expected to offer sustainable solutions to waste recycling while enhancing the performance of roads.This review provides an extensive analysis of the recycling of three main types of solid wastes for road engineering purposes:industrial solid waste,infrastructure solid waste,and municipal life solid waste.Industrial solid wastes suitable for road engineering generally include coal gangue,fly ash,blast furnace slag,silica fume,and steel slag,etc.Infrastructure solid wastes recycled in road engineering primarily consist of construction&demolition waste,reclaimed asphalt pavements,and recycled cement concrete.Furthermore,recent exploration has extended to the utilization of municipal life solid wastes,such as incinerated bottom ash,glass waste,electronics waste,plastic waste,and rubber waste in road engineering applications.These recycled solid wastes are categorized into solid waste aggregates,solid waste cements,and solid waste fillers,each playing distinct roles in road infrastructure.Roles of solid waste acting aggregates,cements,and fillers in road infrastructures were fully investigated,including their pozzolanic properties,integration effects to virgin materials,modification or enhancement solutions,engineering performances.Utilization of these materials not only addresses the challenge of waste management but also offers environmental benefits aiming carbon neutral and contributes to sustainable infrastructure development.However,challenges such as variability in material properties,environmental impact mitigation,secondary pollution to environment by leaching,and concerns regarding long-term performance need to be further addressed.Despite these challenges,the recycled solid wastes hold immense potential in revolutionizing road construction practices and fostering environmental stewardshi

关键词： Road engineering Industrial solid waste Infrastructure solid waste Municipal life waste Recycled materials

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FLEXURAL CAPACITY OF RC BEAM STRENGTHENED WITH PRESTRESSED C/AFRP SHEETS

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Transactions of Nanjing University of Aeronautics and Astronautics 2013年第2期30卷 202-208页

作者：王小萌周储伟艾军张剑王东 College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Lianyungang highway Management office

A method for strengthening concrete structures by prestressed intraply hybrid C/AFRP sheets(composed of aramid fiber and carbon fiber)is proposed,aiming at overcoming shortages of some current strengthening methods.The bending capacity of beams strengthened by prestressed intraply hybrid C/AFRP sheets is analysed.The result shows that the bending resistance,the extending performance and the economical efficiency of intraply hybrid fiber sheets are better than those of interlaminar hybrid fiber sheets and single-fiber sheets.Moreover,prestressed intraply hybrid C/AFRP sheets can improve the performance of the strengthened beam,effectively inhibit the expansion of the cracks,and reduce distortion and risk of early failure.

关键词： C/AFRP sheet prestress strengthening concrete beam bending resistance

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project Level Pavement Evaluation Using FWD,GPR,and Video Logging and Its Application in Pavement Rehabilitation in Indiana

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Journal of Civil Engineering and Architecture 2023年第8期17卷 406-417页

作者： Yigong Ji INDOT office of Research and Development 1205 Montgomery StreetWest LafayetteIndiana 47906USA

Pavement rehabilitation is a major activity for all highway agencies.Accurate and efficient measurement of the rehabilitated pavement performances becomes more and more important in this procedure.In the last 10 years,significant improvements have been made in pavement nondestructive evaluation.NDT(non-destructive testing)has gained popularity because of its advantage in comparison to laboratory testing.Some of these advantages include minimal or no damage to structure,in-situ full-scale testing,relatively low operational cost,and short test duration.The INDOT(Indiana Department of Transportation)has a project level pavement evaluation program that began several years ago.This project level evaluation program employs FWD(falling weight deflectometer),GPR(ground penetration radar)and video logging.The program provides valuable information about pavement performance characteristics and offers useful tools for developing pavement rehabilitation strategies,specifically overlays and pavement underseals.On the other hand,the state of Indiana had rehabilitated its flexible,rigid or composite pavement almost exclusively with asphalt.This AC(asphalt concrete)overlay can improve the condition of existing pavement and extend the service life of the existing pavement structure.This paper thus describes the experiences of pavement overlay with AC thickness design for the INDOT(Indiana State Department of Transportation)using the AASHTO(American Association of State highway and Transportation Officials)1993 Guide,the MEPDG(Mechanistic-Empirical Pavement Design Guide).In order to do that,backcalculation program was compared and evaluated to obtain subgrade resilient modulus and k value for pavement rehabilitation using FWD data.Video logging provides IRI(international roughness index)and rut depth for existing pavement condition and GPR provides thickness or pavement bonding conditions in pavement.Emphasis is placed on observations and issues encountered using the current AASHTO 1993 Guide and the MEPDG.

关键词： FWD GPR video logging backcalculation 1993 AASHTO MEPDG

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Review of advanced road materials, structures, equipment, and detection technologies

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Journal of Road Engineering 2023年第4期3卷 370-468页

作者： JRE Editorial office Maria Chiara Cavalli De Chen Qian Chen Yu Chen Augusto Cannone Falchetto Mingjing Fang Hairong Gu Zhenqiang Han Zijian He Jing Hu Yue Huang Wei Jiang Xuan Li Chaochao Liu Pengfei Liu Quantao Liu Guoyang Lu Yuan Ma Lily Poulikakos Jinsong Qian Aimin Sha Liyan Shan Zheng Tong B.Shane Underwood Chao Wang Chaohui Wang Di Wang Haopeng Wang Xuebin Wang Chengwei Xing Xinxin Xu Min Ye Huanan Yu Huayang Yu Zhe Zeng You Zhan Fan Zhang Henglong Zhang Wenfeng Zhu Editorial office of Journal of Road Engineering Chang’an UniversityXi’an 710064China Department of Civil and Architectural Engineering KTH Royal Institute of TechnologyStockholm 10044Sweden School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China School of highway Chang’an UniversityXi’an 710064China Department of Civil Engineering Aalto UniversityAalto 00076Finland School of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China National Engineering Research Center of highway Maintenance Equipment Chang’an UniversityXi’an 710064China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Transportation Southeast UniversityNanjing 211189China Institute for Transport Studies University of LeedsLeeds LS29JTUK School of Traffic and Transportation Engineering Changsha University of Science&TechnologyChangsha 410114China Institute of highway Engineering RWTH Aachen UniversityAachen 52074Germany State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Department of Architecture and Civil Engineering City University of Hong KongHong KongChina Empa Swiss Federal Laboratories for Materials Science and TechnologyDübendorf 8600Switzerland College of Transportation Engineering Tongji UniversityShanghai 200092China School of Transportation Science and Engineering Harbin Institute of TechnologyHarbin 150090China Department of Civil Constructionand Environmental EngineeringNorth Carolina State UniversityRaleighNC 27695USA Department of Road&Urban Railway Engineering Beijing University of TechnologyBeijing 100124China Department of Civil and Environmental Engineering University of LiverpoolLiverpool L693GHUK School of Civil Engineering&Transportation South China University of TechnologyGuangzhou 510640China College of Civil Engineering Hunan UniversityChangsha 410082China

As a vital and integral component of transportation infrastructure,pavement has a direct and tangible impact on socio-economic sustainability.In recent years,an influx of groundbreaking and state-of-the-art materials,structures,equipment,and detection technologies related to road engineering have continually and progressively emerged,reshaping the landscape of pavement systems.There is a pressing and growing need for a timely summarization of the current research status and a clear identification of future research directions in these advanced and evolving technologies.Therefore,Journal of Road Engineering has undertaken the significant initiative of introducing a comprehensive review paper with the overarching theme of“advanced road materials,structures,equipment,and detection technologies”.This extensive and insightful review meticulously gathers and synthesizes research findings from 39 distinguished scholars,all of whom are affiliated with 19 renowned universities or research institutions specializing in the diverse and multidimensional field of highway engineering.It covers the current state and anticipates future development directions in the four major and interconnected domains of road engineering:advanced road materials,advanced road structures and performance evaluation,advanced road construction equipment and technology,and advanced road detection and assessment technologies.

关键词： Road engineering Advanced road material Advanced road structure Advanced road equipment Advanced road detection technology

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Extrapolating plot-scale CO_(2) and ozone enrichment experimental results to novel conditions and scales using mechanistic modeling

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Ecological Processes 2018年第1期7卷 348-367页

作者： Eric J.Gustafson Mark E.Kubiske Brian R.Miranda Yasutomo Hoshika Elena Paoletti Institute for Applied Ecosystem Studies Northern Research StationUSDA Forest Service5985 Highway KRhinelanderWIUSA Institute of Sustainable Plant Protection National Council of ResearchVia Madonna del Piano 1050019 Sesto FiorentinoItaly

Introduction:The Aspen-FACE experiment was an 11-year study of the effect of elevated CO_(2) and ozone(alone and in combination)on the growth of model aspen communities(pure aspen,aspen-birch,and aspen-maple)in the field in northern Wisconsin,USA.Uncertainty remains about how these short-term plotlevel responses might play out over broader temporal and spatial scales where climate change,competition,succession,and disturbances interact with tree-level responses.In this study,we used a new physiologybased approach(PnET-Succession v3.1)within the forest landscape model LANDIS-II to extrapolate the FACE results to broader temporal scales(and ultimately to landscape scale)by mechanistically accounting for the globally changing drivers of temperature,precipitation,CO_(2),and ozone.We added novel algorithms to the model to mechanistically simulate the effects of ozone on photosynthesis through ozone-induced impairment of stomatal control(i.e.,stomatal sluggishness)and damage of photosynthetic capacity at the chloroplast level.Results:We calibrated the model to empirical observations of competitive interactions on the elevated CO_(2) and O_(3) plots of the Aspen-FACE experiment and successfully validated it on the combined factor plots.We used the validated model to extend the Aspen-FACE experiment for 80 years.When only aspen clones competed,we found that clone 271 always dominated,although the ozone-tolerant clone was co-dominant when ozone was present.Under all treatments,when aspen clone 216 and birch competed,birch was always dominant or co-dominant,and when clone 216 and maple competed,clone 216 was dominant,although maple was able to grow steadily because of its shade tolerance.We also predicted long-term competitive outcomes for novel assemblages of taxa under each treatment and discovered that future composition and dominant taxa depend on treatment,and that short-term trends do not always persist in the long term.Conclusions:We identified the strengths and weaknesses of PnET-Succession v3.1 and conclude that i

关键词： Scaling Global change Elevated CO_(2) Ozone pollution Aspen-FACE Forest composition Carbon dynamics Forest landscape modeling LANDIS-II PnET-succession

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1996—1999年2岁以下儿童对国家免疫指导方针的依从性

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世界核心医学期刊文摘（儿科学分册） 2006年第9期2卷 54-55页

作者： Mell L.K. Ogren D.S. Davis R.L. 贺莉 office of Genomics and Disease Prevention Centers for Disease Control and PreventionMailstop K-894770 Buford HighwayAtlantaGA 30341United States Dr.

for at health maintenance organizations (HMOs) and to examine effects on immunization status. Methods. A cohort study of 176 134 children born between January 1,1994,and December 31,1997,and monitored from birth to the second birthday was performed. Subjects belonged to the Vaccine Safety Datalink project,a study of children enrolled in 1 of 4 HMOs. Children were continuously enrolled in a HMO for the first 2 years of life. Prevailing recommendations regarding optimal ages of immunization and intervals between doses were applied to define appropriate immunization timing and immunization status. Noncompliance was defined as having a missing or late immunization or an immunization error. Immunization errors included invalid immunizations (too early to be acceptable),extra immunizations (superfluous immunizations or make-up immunizations for invalid immunizations),and missed opportunities resulting in late or missing immunizations. Results. Although 75.4% of children in these HMOs were up to date for all immunizations at 2 years,only 35.6% of children were fully compliant with recommended immunization practices. Less than 8% of children received all immunizations in accordance with strict interpretation of recommended guidelines. Fifty-one percent of children had at least 1 immunization error by age 2 years; 29.7% had a missed opportunity with subsequent late or missing immunization,20.4% had an invalid immunization,and 11.6% had an extra immunization. Common reasons for noncompliance included missed opportunities for the fourth Haemophilus influenzae type b vaccine (14.6% ) ,invalid fourth diphtheria-tetanus-pertussis/ acellular pertussis immunizations (11.0% ),and superfluous polio immunizations (9.8% ). Conclusions. Approximately 35.6% of children were compliant with prevailing childhood immunization recommendations from 1996 to 1999. Efforts to improve compliance with guidelines are recommended,to optimize childhood infectious disease prevention.

关键词：依从性疫苗接种指导方针脊髓灰质炎疫苗儿童免疫接种百日咳疫苗队列研究儿童感染性疾病健康

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The SOOS Asian Workshop: Exploring possibilities for collaboration

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Advances in Polar Science 2014年第2期25卷 126-132页

作者： Sebastiaan Swart Jiping Liu Parli Bhaskar Louise Newman Kim Finney Michael Meredith Oscar Schofield Southern Ocean Carbon & Climate Observatory CSIR PO Box 320 Stellenbosch 7955 South Africa Department of Oceanography Marine Research Institute University of Cape Town Rondebosch 7701 South Africa Department of Atmospheric and Environmental Sciences University at Albany State University of New York AlbanyNY 12222 USA National Centre for Antarctic & Ocean Research Headland Sada Vasco-da-Gama Goa 403 804 India Southern Ocean Observing System International project office Institute for Marine and Antarctic Studies University of Tasmania Australian Antarctic Division Channel Highway Kingston Tasmania 7050 Australia British Antarctic Survey Cambridge Cambridgeshire CB3 0ET United Kingdom Coastal Ocean Observation Laboratory Institute of Marine and Coastal Sciences Rutgers University New Brunswick NJ 08901 USA

The first Southern Ocean Observing System （SOOS） Asian Workshop was successfully held in Shanghai, China in May 2013, attracting over 40 participants from six Asian nations and widening exposure to the objectives and plans of SOOS. The workshop was organized to clarify Asian research activities currently taking place in the Southern Ocean and to discuss, amongst other items, the potential for collaborative efforts with and between Asian countries in $OOS-related activities. The workshop was an important mechanism to initiate discussion, understanding and collaborative avenues in the Asian domain of SOOS beyond current established eflbrts. Here we present some of the major outcomes of the workshop covering the principle themes of SOOS and attempt to provide a way forward to achieve a more integrated research community, enhance data collection and quality, and guide scientific strategy in the Southern Ocean.

关键词： Southern Ocean observing system Asia collaboration

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Research and Analysis on Refined Precipitation Forecast Method of highway during Flood Season in Gansu Province

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Meteorological and Environmental Research 2015年第1期6卷 23-28页

作者： Liu Kang Li Zhaorong Wang Yousheng Zhang Yu Yang Ruihong He Jinmei Wang Dongmei Yin Chun Gansu Provincial Meteorological Service Center Institute of Arid Meteorology China Meteorological Administration Gansu Province Artificial Modification office

In this paper, T639 global spectral model numerical forecast products issued by numerical prediction center of China Meteorological Administration and precipitation data at 676 regional stations of Gansu during flood season were used firstly for interpretation. Then, through the establishment of multiple linear stepwise regression equation, daily precipitation forecast with the time interval of 6 h during 0 -72 h in May, 2013 in Gansu Province was obtained. By precipitation forecast verification analysis, it was found that the precipitation forecast in Hexi region and central Gansu Province had best effect; forecast in some places of east Hedong region had relatively good effect; part of the city or state forecast effect in the plateau slope zone was relatively lower. The refined precipitation forecast had certain reference and use value in the post-production Gansu Province highway forecasting during flood season.

关键词： Refined precipitation forecast highway Gansu China

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New innovations in pavement materials and engineering:A review on pavement engineering research 2021

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第6期8卷 815-999页

作者： JTTE Editorial office Jiaqi Chen Hancheng Dan Yongjie Ding Yangming Gao Meng Guo Shuaicheng Guo Bingye Han Bin Hong Yue Hou Chichun Hu Jing Hu Ju Huyan Jiwang Jiang Wei Jiang Cheng Li Pengfei Liu Yu Liu Zhuangzhuang Liu Guoyang Lu Jian Ouyang Xin Qu Dongya Ren Chao Wang Chaohui Wang Dawei Wang Di Wang Hainian Wang Haopeng Wang Yue Xiao Chao Xing Huining Xu Yu Yan Xu Yang Lingyun You Zhanping You Bin Yu Huayang Yu Huanan Yu Henglong Zhang Jizhe Zhang Changhong Zhou Changjun Zhou Xingyi Zhu Editorial office of Journal of Traffic and Transportation Engineering(English Edition) Chang’an UnivieristyXi’an 710064China School of Civil Engineering Central South UniversityChangsha 410075China School of Civil Engineering Chongqing Jiaotong UniversityChongqing 400074China Department of Structural Engineering Faculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2628 CNthe Netherlands The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing 100124China College of Civil Engineering Hunan UniversityChangsha 410082China School of Civil and Transportation Engineering Beijing University of Civil Engineering and ArchitectureBeijing 100044China School of Transportation Science and Engineering Harbin Institute of TechnologyHarbin 150090China College of Metropolitan Transportation Beijing University of TechnologyBeijing 100124China School of Civil Engineering&Transportation South China University of TechnologyGuangzhou 510641China School of Transportation Southeast UniversityNanjing 211189China Department of Civil&Environmental Engineering University of WaterlooWaterlooON N2L 3G1Canada Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina School of highway Chang’an UniversityXi’an 710064China Institute of highway Engineering RWTH Aachen UniversityAachen 52074Germany School of Transportation&Logistics Dalian University of TechnologyDalian 116024China School of Civil Engineering Southwest Jiaotong UniversityChengdu 611756China Faculty of Architecture Civil and Transportation EngineeringBeijing University of TechnologyBeijing 100124China Department of Civil Engineering Aalto UniversityEspoo 02150Finland Nottingham Transportation Engineering Center(NTEC) University of NottinghamNottingham NG72RDUK State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China College of Transportation Engineer

Sustainable and resilient pavement infrastructure is critical for current economic and environmental challenges.In the past 10 years,the pavement infrastructure strongly supports the rapid development of the global social economy.New theories,new methods,new technologies and new materials related to pavement engineering are emerging.Deterioration of pavement infrastructure is a typical multi-physics problem.Because of actual coupled behaviors of traffic and environmental conditions,predictions of pavement service life become more and more complicated and require a deep knowledge of pavement material analysis.In order to summarize the current and determine the future research of pavement engineering,Journal of Traffic and Transportation Engineering(English Edition)has launched a review paper on the topic of"New innovations in pavement materials and engineering:A review on pavement engineering research 2021".Based on the joint-effort of 43 scholars from 24 well-known universities in highway engineering,this review paper systematically analyzes the research status and future development direction of 5 major fields of pavement engineering in the world.The content includes asphalt binder performance and modeling,mixture performance and modeling of pavement materials,multi-scale mechanics,green and sustainable pavement,and intelligent pavement.Overall,this review paper is able to provide references and insights for researchers and engineers in the field of pavement engineering.

关键词： Asphalt binder Asphalt mixture Modeling of pavement materials Multi-scale mechanics Green and sustainable pavement Intelligent pavement

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