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Study On Influence Of Udl Hyd Raulic Parameters On Anti-Seepage Performance Of Slope Treate D With Cover Layer, Xiao Jie, Yan Dongq Ing, Chen Guanyi, Hu Linjie, Chang Jin Apr 2026

Study On Influence Of Udl Hyd Raulic Parameters On Anti-Seepage Performance Of Slope Treate D With Cover Layer, Xiao Jie, Yan Dongq Ing, Chen Guanyi, Hu Linjie, Chang Jin

Journal of China & Foreign Highway

To explore the influe nce of hydraulic parameters of the drainage layer (UDL) on the anti-seepage performance of the capillary barrier cover (CBC) layer, the VG model was adopted to fit the soil-water characteristic curve and permeability function of soil based on the principle of unsaturated seepage in this paper. A simplified model of “fine-UDL-coarse ”-type CBC layer containing a UDL was established using Geo Studio finite element software. By carrying out the numerical simulation of seepage of expansive soil slope treated with the cover layer under heavy rain conditions, the influence rules of different hydraulic parameters of the UDL …

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Numerical Study On Mechanical Characteristics Of Positive-Negative Batter Pile Combinations At Embankment Slope Toe Under Different Pile Length Ratios, Zhou Yi, Chen Wei, Xie Zhuqing, Xia Wang, Zhou Dequan Apr 2026

Numerical Study On Mechanical Characteristics Of Positive-Negative Batter Pile Combinations At Embankment Slope Toe Under Different Pile Length Ratios, Zhou Yi, Chen Wei, Xie Zhuqing, Xia Wang, Zhou Dequan

Journal of China & Foreign Highway

Embankment filling on weak subgrades is prone to sliding and collapse failures. Positive-negative batter pile combinations were proposed to be installed at the embankment slope toe to constrain lateral deformations, but systematic inquiries into the mechanical characteristics of positive-negative batter pile combinations are still lacking. The mechanical responses of positive-negative batter pile combinations under lateral loads with different pile length ratios (1/2, 2/3, 1, 3/2, and 2/1) were systematically investigated by the finite element software Abaqus, and calculation and verification were conducted by the structural mechanics force method, providing a basis for the design of positive-negative batter pile combinations at …

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In-Situ Experimental Study On Static Pressure Bearing Characteristics Of Deep-Sea Super-Long Steel Casing, Su Bidi, Qiao Wei, Qiu Shumao, Lyu Xue, Chen Zhengui Apr 2026

In-Situ Experimental Study On Static Pressure Bearing Characteristics Of Deep-Sea Super-Long Steel Casing, Su Bidi, Qiao Wei, Qiu Shumao, Lyu Xue, Chen Zhengui

Journal of China & Foreign Highway

To reveal the distribution characteristics of stress and strain, load characteristics, and influence mechanism of super-long and large-diameter steel casings during the construction process in deep-sea areas, the dynamic stress and strain of the casing body were dynamically monitored during the static pressure construction of the steel casing in deep-sea areas in this paper to calculate the stress distribution of the steel casing;meanwhile, finite element simulation was conducted using Abaqus software to analyze the variation characteristics of pile top load, side friction resistance, and end resistance during the static pressure process of the steel casing on the inclined rock surface …

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Study On Stability Analysis And Reinforcement Scheme Of High Steep Road Cutting Slope Excavat Ion Under Rainfall Conditions, Chen Zhenshan, Peng Hao Apr 2026

Study On Stability Analysis And Reinforcement Scheme Of High Steep Road Cutting Slope Excavat Ion Under Rainfall Conditions, Chen Zhenshan, Peng Hao

Journal of China & Foreign Highway

To study the influence of excav ation and rainfall on the stability of high steep road cutting slopes, relying on an actual project, the unsaturated slope seepage and stability were analyzed by a self-programmed calculation program using FLAC3D software, and the corresponding reinforcement optimization scheme was studied through the analysis of the pile spacing of anti-slip piles and the length of the anchoring section. The results indicate that:① The surface soil of the slope is greatly affected by excavation. With the decrease of the excavation slope ratio, the horizontal displacement decreases;the vertical displacement remains basically unchanged, and stress concentration exists …

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Research On Dynamic Response And Deformation Characteristics Of Pre-Disintegrated Carbonaceous Mudstone Embankment, Zhang Ke, Liu Xinxi, Fan Zijian, Li Shengnan, Zhao Fufa Apr 2026

Research On Dynamic Response And Deformation Characteristics Of Pre-Disintegrated Carbonaceous Mudstone Embankment, Zhang Ke, Liu Xinxi, Fan Zijian, Li Shengnan, Zhao Fufa

Journal of China & Foreign Highway

To study the dynamic response and deformation characteristics of the carbonaceous mudstone embankment under traffic load, dynamic triaxial tests were conducted to investigate the variation laws of the dynamic backbone curve and dynamic elastic modulus of the carbonaceous mudstone embankment filler under the influence of different factors. Combined with numerical simulation, the dynamic response and deformation characteristics of the carbonaceous mudstone embankment were analyzed. The dynamic triaxial test results show that the dynamic backbone curve of the carbonaceous mudstone embankment filler can be described by the Hardin-Drnevich model. The dynamic elastic modulus of the carbonaceous mudstone filler is positively correlated …

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Advances In Properties Of Construction Waste Mixtures And Recycling Technologies For Road Construction, Liu Yuanqia Ng, Dai Wenbin, Jiao Weili, Xu Bin Apr 2026

Advances In Properties Of Construction Waste Mixtures And Recycling Technologies For Road Construction, Liu Yuanqia Ng, Dai Wenbin, Jiao Weili, Xu Bin

Journal of China & Foreign Highway

Resource utilization of construction waste is an important approach for the sustainable development of infrastructure. To improve the diversified recycling system of construction waste in China and resolve the contradiction between the yield of construction waste and lagging treatment technologies, the physical-mechanical properties, modification methods, and pavement performance of construction waste were systematically summarized in this paper. Firstly, by analyzing the sources and treatment processes of construction waste, material variability was clarified as the key factor restricting its high-value application. Secondly, the application characteristics of construction waste mixtures in the subgrade, base, and asphalt surface layer of road engineering were …

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Experimental Study On Compressive And Flexural Behaviors Of Pva Fiber-Reinforced Cement Soil, Lu Peng, Lu Bin, Zhang Jiahu, Zhou Siwei, Wang Jin, Hou Lijun Apr 2026

Experimental Study On Compressive And Flexural Behaviors Of Pva Fiber-Reinforced Cement Soil, Lu Peng, Lu Bin, Zhang Jiahu, Zhou Siwei, Wang Jin, Hou Lijun

Journal of China & Foreign Highway

To address the problems of low toughness and poor deformation ability of cement soil, short-chopped polyvinyl a lcohol (PVA) fibers were added to modify and toughen the cement soil in this paper, and unconfined compressive and flexural tests were conducted on the PVA fiber-reinforced cement soil with different cement contents. The results show that compared with plain cement soil, the fiber-reinforced cement soil has stronger compressive deformation capacity, a flatter descending branch of the compressive stress –strain curve, a higher residual stress level, and better compressive toughness. When the cement content increases from 5% to 10%, the overall growth rates …

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Preparation Of Composite Modified Mortar For Bonded Thin Overlay Of Cement Concrete Pavement, Zha Xudong, Lei Bingbing, Li Yunjie, Luo Runzhou Apr 2026

Preparation Of Composite Modified Mortar For Bonded Thin Overlay Of Cement Concrete Pavement, Zha Xudong, Lei Bingbing, Li Yunjie, Luo Runzhou

Journal of China & Foreign Highway

To address the surface distresses such as surface polishing, aggregate exposure, pitting, and unevenness in cement concrete pavement, a polymer composite modified cement mortar material incorporating both polypropylene fibers and redispersible latex powders was designed for the bonded thin overlay repair of existing cement concrete pavement. Based on the orthogonal test method, composite modified mortars with different mix proportions were prepared, and their performance indexes, including fluidity, flexural strength, compressive strength, and drying shrinkage, were tested to optimize and determine the optimal mix proportion. The corresponding workability, mechanical, bonding, and durability properties, as well as the microscopic characteristics, were verified …

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Preparation Of Water-Resistant Solid Waste-Based Solidifier And Study On Properties Of Solidified Soil, Yao Yanbo, Zhu Ting, Yang Guowei, Li Menglong Apr 2026

Preparation Of Water-Resistant Solid Waste-Based Solidifier And Study On Properties Of Solidified Soil, Yao Yanbo, Zhu Ting, Yang Guowei, Li Menglong

Journal of China & Foreign Highway

Under the background of the “carbon peaking and carbon neutrality ” goals, the improvement and resource utilization of industrial solid waste and waste soil have become increasingly important. High carbon emissions are generated during the production of traditional cement and lime-modified solidifiers, which exhibit poor crack resistance and tensile properties. In contrast, a composite organic-inorganic membrane can be formed by waterborne epoxy resin combined with C‒S‒H gel in cement soil to cement the internal flaky or spherical soil particles, thereby improving the tensile strength and water erosion resistance of the soil. In this paper, slag and desulfurization gypsum were selected …

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Research On Key Technologies For Pavement Design Of Shenshan West Expressway Reconstruction And Expansion Project, Xu Weinan Apr 2026

Research On Key Technologies For Pavement Design Of Shenshan West Expressway Reconstruction And Expansion Project, Xu Weinan

Journal of China & Foreign Highway

In recent years, expressway reconstruction and expansion projects have been increasing, and expansions from four to eight lanes and from six to ten lanes are relatively common. In the design process of reconstruction and expansion, the rationality of the design for overlay, widening, and lap treatment of “white-to-black” pavement has a significant impact on pavement reconstruction quality. The formation of ultra-wide pavement after reconstruction, especially in sections such as acceleration and deceleration lanes, areas with small composite longitudinal slopes, and the bottom of concave curves, makes pavement drainage difficult, which affects driving safety to some extent. Meanwhile, milling waste generated …

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Review On Self-Healing Capacity Of Asphalt Mixtures By Microwave Heating, Deng Yue, Dong Yuming, Sun Daquan Apr 2026

Review On Self-Healing Capacity Of Asphalt Mixtures By Microwave Heating, Deng Yue, Dong Yuming, Sun Daquan

Journal of China & Foreign Highway

Asphalt pavement generates cracking damage under the action of vehicle loads and other factors, which triggers various distresses. Microwave heating technology can rapidly increase the temperature of mixtures, enhance the self-healing capacity of asphalt, and thereby repair the damage. The research progress on the self-healing capacity of asphalt mixtures by microwave heating was reviewed in this paper and summarized from four aspects:the self-healing mechanisms under microwave heating, test methods, evaluation indicators, and influencing factors of the self-healing capacity. The results indicate that microwaves promote the flow and healing of asphalt through multiple mechanisms;the loading states of mixtures were simulated by …

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Analysis Of Mechanical Properties And Microscopic Discrete Element Study Of Foam Concrete Under Dry-Wet Cycles, Xu Ke, Zhang Jun, Kuang Yuyang Apr 2026

Analysis Of Mechanical Properties And Microscopic Discrete Element Study Of Foam Concrete Under Dry-Wet Cycles, Xu Ke, Zhang Jun, Kuang Yuyang

Journal of China & Foreign Highway

To reveal the effects of the number of dry-wet cycles and the material density gradient on the deterioration laws of macroscopic mechanical properties, microscopic damage mechanisms, and failure modes of foam concrete, foam concrete test blocks with densities of 800 kg/m3, 1 000 kg/m3, and 1 200 kg/m3 were investigated in this paper. Macro-micro joint tests and three-dimensional discrete element simulation methods were combined. Specifically, 25 dry-wet cycle tests, nuclear magnetic resonance pore analyses, and uniaxial compression tests were conducted, and a discrete element model considering particle expansion and contraction, as well as crystalline salt deterioration effects was constructed. The …

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Study On Calculation Method For Deflection Of Pc Beams Subjected To Local Corrosion, Yao Shuhao, Yao Yan, Peng Jianxin, Xiao Junyi, Zhao Yang Apr 2026

Study On Calculation Method For Deflection Of Pc Beams Subjected To Local Corrosion, Yao Shuhao, Yao Yan, Peng Jianxin, Xiao Junyi, Zhao Yang

Journal of China & Foreign Highway

To reasonably evaluate the increase in deflection of PC beams after local corrosion, a calculation method for deflection of corroded PC beams based on the stress and strain model of corroded reinforcement was proposed by considering the beam-arch effect formed by reinforcement corrosion and the degradation of bond strength between reinforcement and concrete. Bending tests on a batch of locally corroded PC beams were carried out to verify the calculation method, and a parameter analysis on the corrosion rate and corrosion position was conducted. The results show that the load ‒ deflection curves obtained by the calculation method are in …

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Characterization Of Stress State Of Corrugated Steel Web Girders Based On Mann-Kendall Criterion, Dou Fei, Chen Feng Apr 2026

Characterization Of Stress State Of Corrugated Steel Web Girders Based On Mann-Kendall Criterion, Dou Fei, Chen Feng

Journal of China & Foreign Highway

To reasonably characterize the stress state of corrugated steel web girders and determine the failure load, the stress state evolution pattern of corrugated steel web girders was investigated in this paper based on the structural stress state theory, relying on the model test of a continuous corrugated steel web composite box girder bridge with a span arrangement of (2. 65 + 4. 10 + 2. 65) m. First, the generalized strain energy density was constructed as a characteristic parameter using the longitudinal strain of the test girder, and then the strain energy density ‒ load curve was obtained. The Mann-Kendall …

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Study On Mechanical Characteristics Of Hydraulic Climbing Formwork Structure For Variable Cross-Section Hollow Thin-Walled High Piers In Shallow Hilly Areas, Wang Chengye, Liu Chuanqi, Li Lei, Liang Bin, Li Wenjie Apr 2026

Study On Mechanical Characteristics Of Hydraulic Climbing Formwork Structure For Variable Cross-Section Hollow Thin-Walled High Piers In Shallow Hilly Areas, Wang Chengye, Liu Chuanqi, Li Lei, Liang Bin, Li Wenjie

Journal of China & Foreign Highway

To address the problems of severe damage to the pier concrete caused by wall attachments of components such as guide rails and low climbing efficiency in traditional hydraulic climbing formwork construction, a new type of hydraulic climbing formwork structure suitable for the construction of variable cross-section hollow thin-walled high piers was designed based on the Miaolu River Bridge project of the Zhengzhou ‒ Luoyang Expressway in this paper. To ensure the safety of the structure during construction, a finite element model of the climbing formwork structure was established using Midas Civil;the stress and deformation of components such as formwork, climbing …

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Research On Girder-End Displacement Control Of Long-Span Cable-Stayed Bridges Based On Nonlinear Spring And Damping Restraint Device, Sun Bailin, Chen Jinlin, Sun Wencheng, Xu Jixiang, Liu Shengzhi, Niu Huawei Apr 2026

Research On Girder-End Displacement Control Of Long-Span Cable-Stayed Bridges Based On Nonlinear Spring And Damping Restraint Device, Sun Bailin, Chen Jinlin, Sun Wencheng, Xu Jixiang, Liu Shengzhi, Niu Huawei

Journal of China & Foreign Highway

To achieve the girder-end displacement control of long-span cable-stayed bridges under static and dynamic loads such as temperature, vehicle load, wind load, and earthquake, a new type of nonlinear spring and damping restraint device was developed in this paper, and a dynamic analysis finite element model of the structure was established. The influence laws of the limit parameter variations of the device on the girder-end displacement, the relative displacement between tower and girder, and the internal force at the tower bottom were analyzed, and reasonable parameter values were determined. On this basis, the dynamic responses of the long-span cable-stayed bridge …

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Study On Effect Of Reinforcement Ratio On Failure Mode Of Y-Shaped Pier Under Vehicle Eccentric Load, Li Xinfeng, Lin Guangyi, Xia Hao, Li Min, Peng Weibing Apr 2026

Study On Effect Of Reinforcement Ratio On Failure Mode Of Y-Shaped Pier Under Vehicle Eccentric Load, Li Xinfeng, Lin Guangyi, Xia Hao, Li Min, Peng Weibing

Journal of China & Foreign Highway

To construct urban three-dimensional transportation systems and reduce space occupation under bridges, the large cantilever-Y-shaped pier system was applied as a substructure of urban viaducts, with its application demand increasing year by year. However, related research on its reinforcement ratio under vehicle eccentric load has been rarely conducted. Based on an engineering case of an expressway construction project in Jiaxing City, Zhejiang Province, a 1∶5 scaled finite element model was established using Abaqus. The reinforcement ratios of Y-shaped piers in four models were set to 0. 42%, 1. 17%, 1. 69%, and 2. 29%, respectively. Among them, the reinforcement ratio …

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Analysis Of Bearing Capacity Of Large-Span Reinforced Concrete Box Arch Bridge Strengthened With Uhpc, Song Jianping, Chen Xiaohuang, Li Baojun, Yu Xinhua Apr 2026

Analysis Of Bearing Capacity Of Large-Span Reinforced Concrete Box Arch Bridge Strengthened With Uhpc, Song Jianping, Chen Xiaohuang, Li Baojun, Yu Xinhua

Journal of China & Foreign Highway

To analyze the applicability of the ultra-high performance concrete (UHPC) reinforcement method for box arch bridges, a reinforcement project of a reinforced concrete box arch bridge with a span of 125 m was taken as the background in this paper. By analyzing the limitations of the steel plate bonding method in reinforcing large-span box arch bridges, a UHPC reinforcement scheme was proposed, and the corresponding simplified calculation formulas were established. The research results indicate that:① Before reinforcement, the box arch of the bridge exhibits a large eccentric compression failure. After pasting steel plates on the bottom slab of the box …

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Numerical Simulation Of Retraction Effect Of Corroded Prestressed Steel Strands Based On Cohesive Contact, Xu Dejun, Li Jun, Yi Jiafei, Zhang Xiangzhen, Zhao Biao, Lin Yitian, Dai Lizhao Apr 2026

Numerical Simulation Of Retraction Effect Of Corroded Prestressed Steel Strands Based On Cohesive Contact, Xu Dejun, Li Jun, Yi Jiafei, Zhang Xiangzhen, Zhao Biao, Lin Yitian, Dai Lizhao

Journal of China & Foreign Highway

Concrete cracking and bond degradation caused by corrosion lead to retraction slip of prestressed steel strands and changes in transfer length. Simulating the retraction effect of corroded prestressed steel strands is a difficulty in current research. A numerical model for corroded prestressed concrete (PC) components based on Cohesive contact was established. The effects of different corrosion locations and corrosion rates on the retraction slip and transfer length of prestressed steel strands were analyzed. The rationality of the model was verified based on existing experimental data. Results indicate that Cohesive contact can effectively simulate the retraction effect of prestressed steel strands …

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Study On Temperature Field And Temperature Effect Of A Continuous Rigid-Frame Bridge With Horizontal Bottom Cables, Li Guodong, Li Guangmao, Gao Yingjie, Huang Fanglin, Zhou De Apr 2026

Study On Temperature Field And Temperature Effect Of A Continuous Rigid-Frame Bridge With Horizontal Bottom Cables, Li Guodong, Li Guangmao, Gao Yingjie, Huang Fanglin, Zhou De

Journal of China & Foreign Highway

To study the temperature field and temperature effects of a continuous rigid-frame bridge with horizontal bottom cables, a large-span prestressed concrete continuous rigid-frame bridge with a horizontally arranged bottom cable system was selected as the research object. A Python program was developed to calculate the solar radiation boundary conditions, and the Abaqus software was used to establish a two-dimensional transient heat conduction model of the bridge. The time-dependent temperature field of the bridge during summer and winter was analyzed. Based on this, the temperature effects caused by the vertical temperature gradient, transverse temperature gradient, effective temperature, and various temperature modes …

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Discussion On Several Key Design Issues Of Small- And Medium-Span Single-Tower Concrete Self-Anchored Suspension Bridge, Yang Zi Apr 2026

Discussion On Several Key Design Issues Of Small- And Medium-Span Single-Tower Concrete Self-Anchored Suspension Bridge, Yang Zi

Journal of China & Foreign Highway

For self-anchored suspension bridges, reasonable auxiliary span setting, cable force optimization, and structural system selection can not only effectively eliminate the negative reaction effect at the anchorage end, but also improve and optimize the mechanical performance of the stiffened girder. However, current theoretical research is mostly focused on large-span bridges crossing rivers, lakes, and seas, with fewer applications and a lack of corresponding attention in the field of small- and medium-span bridges. In particular, theoretical research on single-tower structures is relatively scarce. In this paper, combined with a practical engineering project, the bridge was studied using a simulation analysis method …

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Analysis Of Temperature Field In Negative Temperature Tunnel Based On Material Thermal Parameter Tests, Xin Quanming, Zhang Feng, Zhao Zhongliang, Sun Zhenhua Apr 2026

Analysis Of Temperature Field In Negative Temperature Tunnel Based On Material Thermal Parameter Tests, Xin Quanming, Zhang Feng, Zhao Zhongliang, Sun Zhenhua

Journal of China & Foreign Highway

In view of the temperature field problem of Asia ’s first four-season cross-country skiing tunnel reconstructed from an existing tunnel, based on the study of the thermal conductivity of tunnel materials by the HOTDISK method, steady-state heat transfer models under different protection conditions were established by using the finite element method and the multi-layer cylinder heat transfer theory, respectively. The temperature field distribution characteristics of the negative temperature tunnel were analyzed, and the influence laws and sensitivities of various factors were investigated. The results show that the freezing of the tunnel affects the material properties of the tunnel structure;the thermal …

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Study On Cause Analysis And Treatment Of Pavement Arching Disease In Highway Tunnels In Water-Rich Soft Rock : A Case Study Of Yunling Tunnel On Shiyan‒Manchuanguan Section Of Fuzhou‒Yinchuan Expressway, Lei Zongjian, Huang Dan, Wu Zheng, Wei Guoyu Apr 2026

Study On Cause Analysis And Treatment Of Pavement Arching Disease In Highway Tunnels In Water-Rich Soft Rock : A Case Study Of Yunling Tunnel On Shiyan‒Manchuanguan Section Of Fuzhou‒Yinchuan Expressway, Lei Zongjian, Huang Dan, Wu Zheng, Wei Guoyu

Journal of China & Foreign Highway

To explore the mechanism of pavement arching disease in phyllite soft rock tunnels and propose targeted disease treatment measures, based on the Yunling Tunnel in the Shiyan‒Manchuanguan section of the Fuzhou ‒ Yinchuan Expressway, typical tunnel diseases were investigated, and triaxial compression tests of phyllite in natural and saturated states were conducted to study the failure laws of the tunnel under the combined action of fault fracture zones and groundwater. The research results indicate that the compressive strength and elastic modulus of the rock in the saturated state are lower than those in the natural state, which demonstrates that the …

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Simulation Study On Smoke Propagation Characteristics At Vault In Urban Bifurcated Tunnel Fire, Guo Xiao, Lyu Jianwei, Tan Xiangjun, Ni Chenyang, Wang Youwei, Li Yuyang Apr 2026

Simulation Study On Smoke Propagation Characteristics At Vault In Urban Bifurcated Tunnel Fire, Guo Xiao, Lyu Jianwei, Tan Xiangjun, Ni Chenyang, Wang Youwei, Li Yuyang

Journal of China & Foreign Highway

To explore the influence of wind speed on the smoke temperature and distribution characteristics of the bifurcated diverging tunnel fire, Hangzhou West Station Tunnel on National Highway G 235 was taken as the engineering background in this paper. The numerical simulation method was used to investigate the influences of different upstream wind speeds and fire source positions on the fire smoke propagation in the diverging expansion section. The results indicate that:① A higher wind speed at the tunnel entrance results in a shorter smoke backflow length in the tunnel, and the rate of smoke backflow in the tunnel decreases accordingly;② …

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Research On Wing-Wall-Free Transition Between W-Beam Guardrail And Combined Bridge Guardrail, Jiang Guanglun, Shang Zhongping, Zhang Yinjiang, Wu Junhong, Li Zhen, Qian Jun Apr 2026

Research On Wing-Wall-Free Transition Between W-Beam Guardrail And Combined Bridge Guardrail, Jiang Guanglun, Shang Zhongping, Zhang Yinjiang, Wu Junhong, Li Zhen, Qian Jun

Journal of China & Foreign Highway

To address the transition problem between the W-beam guardrail and the combined bridge guardrail during the upgrading and reconstruction of in-service highway guardrails, an SB-level wing-wall-free transition section with simple construction and high efficiency was proposed. Computer simulation technology was adopted to study the stiffness transition, height transition, and cross-section transition of the wing-wall-free transition section. The guardrail stiffness transition was achieved by optimizing the column spacing and column cross-sectional dimensions. By comparing the contact area between the vehicle and the guardrail and the vehicle redirection situation under different height differences, it was preliminarily determined that the vehicle can be …

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Short-Term And Long-Term Integrated Design Idea Of Expressway Interchange, Guo Liwei, Shi Jishu, Jia Kui, Zhang Rui Apr 2026

Short-Term And Long-Term Integrated Design Idea Of Expressway Interchange, Guo Liwei, Shi Jishu, Jia Kui, Zhang Rui

Journal of China & Foreign Highway

It is a general way to construct expressway interchanges by stages. The engineering construction cost, road network operational efficiency, and operational security are directly affected by the rationality of the scheme design. Considering the features of short-term and long-term integrated design of interchange, the necessity of research on design ideas was analyzed. Two short-term and long-term integrated design principles were defined, and their applicable conditions, advantages and disadvantages were analyzed. The main control factors of design principles were thus determined. With the main control factors as the criterion and design principle as the goal, the analytic hierarchy process (AHP) was …

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Research On Intelligent Safety Control Of Deep Water Foundation Of Bridges Based On Digital Twins, Guo Feng, Li Ting, Mao Ali Apr 2026

Research On Intelligent Safety Control Of Deep Water Foundation Of Bridges Based On Digital Twins, Guo Feng, Li Ting, Mao Ali

Journal of China & Foreign Highway

To achieve real-time monitoring data collection, intelligent evaluation and warning of safety risks, and rapid disposal of emergency plans for steel cofferdam structures during the construction process of deep water foundations of bridges. Research on intelligent safety control of steel cofferdams of deep water foundations of bridges was conducted based on digital twins. Firstly, BIM software was used to construct a virtual model of the entire construction process of the steel cofferdam, and IoT devices were used to collect real-time data on the stress, displacement, and construction water level of the steel cofferdam structure. Secondly, by using the Web-GL engine …

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Study On Influencing Factors Of Vehicle Exhaust Emissions At Signal-Controlled Intersections, Tu Shengwen, Guo Wenyu, Lei Meimei Apr 2026

Study On Influencing Factors Of Vehicle Exhaust Emissions At Signal-Controlled Intersections, Tu Shengwen, Guo Wenyu, Lei Meimei

Journal of China & Foreign Highway

To reveal the main factors influencing vehicle exhaust emissions at signal-controlled intersections and their action mechanisms, a professional software system for analyzing intersection vehicle fuel consumption and emissions, SIDRA INTERSECTION, was used as the research tool in this paper. The influencing factors and their variation laws of the exhaust emissions of carbon dioxide (CO2), nitrogen oxides (NOx), carbon monoxide (CO), and hydrocarbons (HC) in the intersection area were explored from the aspects of traffic flow characteristics, signal cycles, and signal timing schemes. The research results indicate that:① The average vehicle exhaust emissions at road intersections increase with the rise in …

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Comparative Analysis Of Highway Carbon Emission Accounting Systems Between China And Britain, Liang Guangquan, Ding Lecheng, Xu Jin, Ren Zhen, Wang Wei, Liu Anyang Apr 2026

Comparative Analysis Of Highway Carbon Emission Accounting Systems Between China And Britain, Liang Guangquan, Ding Lecheng, Xu Jin, Ren Zhen, Wang Wei, Liu Anyang

Journal of China & Foreign Highway

With the goal of “achieving carbon peak by 2030 and carbon neutrality by 2060” proposed by China in 2020, energy conservation and carbon reduction in the transportation industry have become particularly important. As an established industrialized country, Britain started its research on carbon emission reduction in the transportation sector relatively early. This paper compared and analyzed the similarities and differences between the highway carbon emission accounting systems of China and Britain, so as to explore their respective policy backgrounds, accounting methods, and application effects and provide relevant suggestions for highway carbon emission reduction in China. Through literature analysis and case …

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Analysis Of Microscopic Crack Propagation In Polyurethane-Cement Stabilized Crushed Stone Based On Discrete Element Method, Yu Xin, Huang Yujie, Chen Chen, Jiang Ziqi, Wang Min, Ling Chenxin Apr 2026

Analysis Of Microscopic Crack Propagation In Polyurethane-Cement Stabilized Crushed Stone Based On Discrete Element Method, Yu Xin, Huang Yujie, Chen Chen, Jiang Ziqi, Wang Min, Ling Chenxin

Journal of China & Foreign Highway

To study the effect of polyurethane grouting on the crack repair performance of cement stabilized crushed stone, a microscopic model of cement stabilized crushed stone was established by the discrete element method (DEM) in this paper. SCB fracture simulation tests were conducted on specimens with different initial notch-to-depth ratios to obtain load ‒ displacement curves, and sensitivity analysis of microscopic parameters was performed. Then, by comparing microscopic characteristics such as crack propagation paths, crack types, and particle displacements before and after grouting, the repair effect of polyurethane grouting materials was evaluated. The results indicate that the grouting filler significantly enhances …

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