Digital Commons Network^™

Properties Of Recycled Concrete Incorporating Nano-Sio 2 And Pva Fibers For Airport Pavements, Hu Gang, Cai Jiuming, Li Julin, Li Bingxu, He Zhi, Li Rui, Li Yuanyuan, Ling Tianqing

Journal of China & Foreign Highway

To promote the efficient reuse of waste concrete resources and improve the overall performance of recycled concrete for airport pavements, this study used recycled coarse aggregate produced by crushing waste runway concrete from Terminal T 3B of Chongqing Jiangbei International Airport to investigate the synergistic effects of polyvinyl alcohol (PVA ) fibers and nano-silica (nano-SiO2) on the mechanical properties and durability of recycled concrete. PVA fibers were incorporated at volume fractions of 0.3%, 0.5%, and 0.7%, while nano-SiO2 was added at mass fractions of 1.5% and 2.0%. An orthogonal experimental design was adopted to evaluate the combined effects through tests …

Rheological Properties Of Bio-Rejuvenated Asphalt And Rejuvenator Dosage Optimization, Liu Jiayao, Zhang Yan, Chen Shuo, Li Jiange, Si Wei, Hu Yongping

Journal of China & Foreign Highway

To restore the pavement performance of aged asphalt, this study used a bio-based rejuvenator to treat laboratory-aged asphalt. The chemical composition of the rejuvenator was analysed using gas chromatography-mass spectrometry (GC-MS ) to investigate the rejuvenation mechanism. The high-temperature rheological performance, intermediate-temperature fatigue resistance, and low-temperature cracking resistance of virgin asphalt, aged asphalt, and rejuvenated asphalt were characterised using multiple stress creep recovery tests, linear amplitude sweep tests, and bending beam rheometer tests, respectively. The results show that the bio-based rejuvenator contains a large quantity of fatty acids, which can effectively restore the creep properties of asphalt, reduce its low-temperature …

Stress Characteristics Of Coarsely Processed Crushed (Cobbled ) Stone Subgrade Materials Based On Large-Scale Triaxial Tests, Xu Zuoqian, Shan Jingsong, Wu Shoukun, Zhao Mi, Guo Ling, Geng Haiyang

Journal of China & Foreign Highway

Large-scale static triaxial tests were conducted to investigate the mechanical properties of coarsely processed crushed (cobbled ) stone subgrade materials and refine engineering design parameters. Standard test specimens measuring 30 cm in diameter and 60 cm in height were prepared, and 18 test conditions were set, including three aggregate content levels (60%, 70%, and 80%) and three confining pressures (30 kPa, 45 kPa, and 60 kPa ), to test the stress and deformation characteristics of crushed (cobbled ) stone subgrade materials in various conditions. By taking the Xuancheng‒Jingxian Expressway as the research object, this paper monitored and analyzed the compressive …

Research On Looseness Diseases Of Pavement Base Course Based On Three-Dimensional Ground Penetrating Radar, Fu An, Li Di, Liu Weizhen, Yang Li

Journal of China & Foreign Highway

Three-dimensional ground penetrating radar (3D GPR ) has important application value in the detection of looseness diseases in road base course due to its advantages of high efficiency and non-destructive testing. However, the existing methods mainly rely on two-dimensional profile analysis, which is difficult to accurately identify the spatial distribution of diseases, and the interpretation of radar data is subject to multiplicity, which affects the detection accuracy and engineering application. Based on the GprMax and Matlab platforms, this paper used the finite-difference time-domain (FDTD ) method to carry out forward modeling, and combined the laboratory experiments and the measured data …

Cfd Numerical Simulation Of Uhpc Pouring Process In Thin‑Walled Shells With Complex Cavities, Yang Yingtao, Yin Yajun, Zhou Jianxin, Lei Xu

Journal of China & Foreign Highway

Renowned for its high strength, durability, and excellent flowability, ultra-high-performance concrete (UHPC ) is widely applied to lightweight thin-walled structures. However, its complex flow characteristics during pouring can easily cause pouring defects. To this end, a CFD numerical simulation framework was constructed based on the Herschel-Bulkley (H-B) rheological model to analyze the flow behavior of UHPC in thin-walled shells with complex cavities. Firstly, model parameters were calibrated by L-box tests to verify the simulation accuracy. The results show that simulation errors for the flow time and flow profile are within 1.0%‒7.2%, demonstrating that the H-B model can effectively capture UHPC …

Stiffness Correction Of Integral Joints In Steel Truss Bridges Based On Rsm-Nsga- Ⅱ, Guan Jingyuan, Chen Hao, Qin Yonggang, Ma Niujing, Zhen Xiaoxia

Journal of China & Foreign Highway

In response to the high precision requirements for alignment control, complex construction procedures, and significant stress variations in steel truss highway-railway bridges, this paper aims to improve the predictive accuracy of finite element models in bridge construction monitoring. The Hongqili highway-railway bridge was used as the engineering background, and a multi-scale numerical model was built using ANSYS. Based on the response surface method (RSM ) and NSGA- Ⅱ method, the joint stiffness of the member-based model was corrected to obtain a rigid-arm model equivalent to the multi-scale model. First, based on the improved AHP-CRITIC combination weighting method, the importance of …

Cable Force Measurement Method For Cable-Stayed Bridges Based On 3d Laser Point Cloud, Zhang Tilang, Shang Kaizhe, Xu Junsong, Zhou Tong, Liu Tingjie, Xiong Wen, Song Xiaodong, Wang Xiao

Journal of China & Foreign Highway

The cable force measurement of cable-stayed bridges plays a vital role in their design, construction, operation, and maintenance and even throughout their entire life cycle. It is the key to ensuring the safe construction, precise forming, and long-term stable operation of cable-stayed bridges. To improve the efficiency of cable force measurement for cable-stayed bridges, this paper proposed a cable force measurement method for them based on 3D laser point cloud, referred to as the cable shape method. The cylindrical fitting method based on the random sample consensus (RANSAC ) algorithm was used to fit the segments, and the influence of …

Internal Force Response Of High-Rise Pile Caps Under Different Load Transfer Paths, Yin Ping, Fan Kefeng, Fan Yujuan, Hu Yongchang, Miao Yichen

Journal of China & Foreign Highway

To clarify the mechanical characteristics and load transfer paths of high-rise pile cap foundations, this paper established a large-scale numerical model of a four-pile high-rise pile cap and used numerical simulation methods to analyze the stress diffusion characteristics and internal force transfer mechanism of high-rise pile caps under different distance-to-thickness ratios (ω/h0, where ω is the horizontal distance from the column edge to the pile center, and h0 is the effective height of the pile cap ). The results indicate the following. ① Reducing the distance-to-thickness ratio significantly alters the stress distribution pattern of the pile cap, making it transition …

Influence Analysis Of Cable Hoisting On Structural Stability In Cantilever Casting Arch Bridge, Luo Peng, Tian Zhongchu, Zhang Zujun, Xu Binlin

Journal of China & Foreign Highway

To clarify the influence of the cable hoisting system as an auxiliary system on structural stability during the construction of a cantilever casting arch bridge, this paper took the Shuiluo River Bridge as the engineering background, and established the model of the cable-stayed buckle hanging system and the cable hoisting system with the use of finite element software. It analyzed the influence on stability from the different lifting weights in the cable hoisting system, geometric nonlinearity considering geometric initial defects, material nonlinearity, the wall thickness of the buckle tower steel pipe, the removal sequence of buckle anchor cables, the installation …

Structural Optimization Of Steel-Concrete Composite Main Cable Saddle For Suspension Bridges, Gan Qianglin, Xu Hongsheng, Guo Fen, Ren Mengwei, Yan Donghuang

Journal of China & Foreign Highway

Traditional all-steel main cable saddles have high manufacturing costs and pose difficulties in construction and transportation. In addition, research on the optimization of steel-concrete composite main cable saddles in China remains limited. To reveal the evolution of mechanical damage in composite main cable saddles while balancing structural safety and engineering economy, a novel steel-concrete composite main cable saddle was proposed based on the main cable saddle design scheme of a major bridge. Concrete damaged plasticity theory (CDP model ), together with the finite element software Abaqus, was used to optimize and analyze the proposed structure. The effects of steel saddle …

Calculation Of Subsoil Bearing Capacity For Culverts With Separate Footings Considering Effect Of Culvert-Side Fill, Peng Xiaoming, Hu Qiong, Li Huan, Fu Fulin, Liu Xinqi

Journal of China & Foreign Highway

To investigate the influence of culvert-side fill height on the subsoil bearing capacity of culverts with separate footings and to establish a method for calculating this bearing capacity, an analytical solution for the ultimate subsoil bearing capacity considering the effect of culvert-side fill was derived using the assumed slip surface method. Meanwhile, finite element software was used to investigate the settlement and deformation characteristics of culverts with separate footings for different foundation soil types and culvert-side fill heights. The results indicate that considering the effect of culvert-side fill increases the subsoil bearing capacity of culverts with separate footings, and that …

Anti-Overturning Stability Of Single-Column-Pier Curved Girder Bridge Under Action Of Heavy Cargo Transportation Vehicles, Wang Sheng, Deng Junjie, Li Zhenyuan

Journal of China & Foreign Highway

This study aimed to mitigate the propensity for lateral overturning of single-column-pier curved girder bridge under the action of heavy cargo transportation vehicles, evaluate the influence of a vehicle ’s transverse traveling position on a bridge ’s anti-overturning stability, and propose feasible safety-enhancement measures. A (20 + 2 × 30 + 20) m prestressed-concrete continuous box-girder ramp bridge with single-column piers served as the engineering case. A three-dimensional grillage finite element model was developed in Midas Civil. The model simulated a heavy cargo transportation convoy —comprising a tractor and front and rear hydraulic modular trailers—transporting a prefabricated box girder weighing …

Seismic Resilience Analysis Of Offshore Cable-Stayed Bridges Considering Chloride Ion Erosion, Ye Hao

Journal of China & Foreign Highway

To analyze the seismic resilience of cable-stayed bridges under chloride ion erosion, based on the mechanism of chloride ion erosion, this study established a time-varying performance degradation model of reinforced concrete components and cables under the erosion environment, and integrated the theory of seismic vulnerability to construct a framework for assessing the seismic resilience of cable-stayed bridges during their long-term service life. Taking an offshore cable-stayed bridge in China as an engineering example, the study analyzed its seismic vulnerability and seismic resilience under chloride ion erosion. The results show that the seismic vulnerability of the cable-stayed bridge system is higher …

Distribution Characteristics Of Defects In Long Stay Cables Based On Dissection Testing, Shi Pochen, Yuan Binhong, Luo Li

Journal of China & Foreign Highway

Stay/suspension cables are crucial load-bearing and force-transmitting components in cable-supported bridge systems. As the service life of bridges increases, defects in these cables become increasingly prevalent, and some bridges built in earlier years face significant structural safety and durability risks. To study the defect distribution characteristics of stay/suspension cables, this paper investigated two long stay cables that had been in service for 21 years and subjected to environmental corrosion for the same duration. Through cable dissection, scanning electron microscopy (SEM ), and airtightness tests, the internal and external defects and their correlations were analyzed. The results show that the aging …

Virtual Reality Visualization For Three-Dimensional Geological Model Of Shield Tunnels, Huang Shan, Pan Qiujing, Wang Lai, Li Ji, Luo Lin

Journal of China & Foreign Highway

A framework for the visualization of three-dimensional (3D) tunnel geological models based on virtual reality (VR) technique was proposed to enhance geological interpretation by providing users such as tunnel engineers and owners with immersive experiences. Firstly, a 3D geological model was built by adopting the indicator Kriging method based on field borehole data. Then, the tunnel structure was modeled by employing the Blender software, and Boolean operations were performed with the built geological model to generate Unity 3D engine-compatible FBX files. Finally, the built geological model was imported into the Unity 3D engine, and VR visualization was realized by adopting …

Design Method And Application Of A New Integrated Anti-Cracking And Anti-Seepage Composite Lining For Mountain Tunnels, Wang Hailin, Liu Hanhong, Yang Fei, Liu Yangbo, Kang Lei, Gong Chenjie

Journal of China & Foreign Highway

Water leakage has long been a common quality issue plaguing mountain tunnel engineering. How to prevent long-term leakage water infiltration and ensure comprehensive waterproofing of tunnels is a technical challenge that urgently needs to be overcome in tunnel construction. To meet the anti-cracking and anti-seepage requirements of tunnel lining, this paper proposed an integrated anti-cracking and anti-seepage design method:a high-performance fiber-reinforced anti-cracking composite material was used to form the concrete lining layer, combined with a novel composite waterproof geomembrane as an auxiliary flexible waterproof layer. The two acted together as an integrated system on the tunnel lining. Through theoretical analysis …

Influence Mechanism And Control Measures Of Shield Tunneling Underneath Pile Foundations Of Masonry Structures, Wang Qingcheng, Chen Minghui, Wang Jian, Long Guihua, Yang Baoyu, Zhang Xuan, Ge Shaoyu, Liu Zhiyong, Kang Xin

Journal of China & Foreign Highway

To address the engineering challenge of excessive structural settlement caused by shield tunneling at close range beneath existing pile-supported buildings, this paper takes an intercity railway shield tunnel project passing beneath an industrial park as its engineering background. Numerical simulations were conducted using GTS NX software and combined with monitoring data collected during shield tunneling to investigate the effects of pile cutting by the shield machine on the ground surface and buildings, as well as to examine the rationality of reinforcement measures and the mechanisms of pile foundation deformation. The results are as follows. ① The ground surface exhibits a …

Automatic Tunnel Support Generation System Based On Intelligent Classification Of Surrounding Rock, Xu Min, Li Jun, Fu Helin, Cao Guiqian, Zhang Yiyi

Journal of China & Foreign Highway

Accurate and rapid classification of surrounding rock during tunnel construction plays a critical role in selecting support parameters. The tunnel face was taken as the research object, and an intelligent classification method was proposed by integrating deep learning and digital image processing technologies to realize intelligent and integrated operation of tunnel surrounding rock classification and support design. Combined with BIM technology, an automatic tunnel support generation system was developed to automatically generate support design drawings according to corresponding support parameters. Tunnel face images were preprocessed using Python to construct a deep learning dataset. The YOLOv 8 convolutional neural network model …

A Multi-Source Data Fusion Assessment Method For Bridges Based On Dempster-Shafer Evidence Theory, Tang Haitao, Lyu Zheng, Wu Haijun, Yang Xiaoxiang, Liu Chuan

Journal of China & Foreign Highway

This paper divided data fusion in bridge condition assessment into same-index fusion and different-index fusion. The different-index fusion can be further subdivided into multi-index fusion within the same component and cross-component fusion. A multi-source data fusion assessment method for bridges was constructed by utilizing Dempster-Shafer evidence theory as the core for improvement. A data conflict judgment criterion was introduced to further classify the same-index fusion into conflicting data fusion and consistent data fusion. This addresses the problem of information conflicts in multi-source monitoring data. The introduction of a data modification criterion effectively avoids the 0-trust paradox that may occur in …

Path Planning Method For Pavement Crack Repair Based On Improved Tabu Search Algorithm, Yu Jing, Zhou Ziang, Lyu Songtao, Xing Yadong, Yang Yi, Li Xiaohui, Zhao Yazi, Tan Puyu

Journal of China & Foreign Highway

Cracks are one of the most common pavement surface distresses. Early crack repair can effectively extend the service life of the pavement. To further enhance the intelligence level of crack repair, efficient automated crack repair technology is particularly important in practical engineering applications. To improve the efficiency of the path planning algorithm embedded in crack repair machines in engineering applications, this paper investigated the automatic repair path planning technology for the multi-crack repair path planning problem in pavement areas. Firstly, a multi-crack repair path planning model was established with the goal of minimizing the total repair path of the machine. …

Bridge Apparent Disease Detection Based On Improved Yolov 5 Algorithm, Huang Rong, Li Rui, Zhai Yuchen, Lyu Yan

Journal of China & Foreign Highway

An improved YOLOv 5 algorithm for bridge apparent disease detection was proposed to address the limitations of target detection algorithms in real bridge modeling disease detection with missing surrounding pixels. The conventional YOLOv 5 model suffers from problems in bridge disease detection, including weak ability in target disease localization and feature extraction, and low recognition accuracy of small-size target diseases. To this end, the CA attention mechanism module was first integrated into the feature extraction backbone network of conventional YOLOv 5 to enhance the model ’s ability to localize and extract features from the target diseases. Secondly, the C 2f …

Variable Speed Limits For Expressway Maintenance Work Zones In Low-Carbon Context, Liu Xiu, Yang Xu, Tan Jingjing

Journal of China & Foreign Highway

To address the decline in traffic efficiency and the increase in carbon emissions caused by lane closures in multi-lane expressway maintenance work zones, this study developed a multi-objective variable speed limit optimization model that integrates carbon emissions, traffic flow, and travel time to support low-carbon tr ansportation. A VISSIM-MOVES simulation platform and the NSGA -Ⅱ genetic algorithm were employed to optimize the speed limit scheme. Using the Suizhong section of the Beijing-Harbin Expressway as a case study, the results show that, compared with the fixed speed limit, the progressive variable speed limit scheme of 80 km/h‒ 80 km/h‒ 60 km/h …

Asphalt Pavement Roughness Prediction Model Based On Weighted Stacking Ensemble Learning, Wang Jiaqi, Tian Shun, Ren Youjun, Li Yingyi, Ren Feihong

Journal of China & Foreign Highway

Pavement roughness is a key indicator for evaluating pavement performance, which directly affects ride comfort and maintenance decisions. Based on the Long-Term Pavement Performance Program (LTPP ) database in the United States, data from 202 asphalt roads in California, Florida, and Minnesota were extracted. Meanwhile, multidimensional features such as pavement structure, climate, traffic loads, and pavement distress were combined to predict the variation of the international roughness index (denoted as IIRI when it is taken as the indicator variable ). Six regression models, including XGBoost, LightGBM, CatBoost, RandomForest, ExtraTrees, and NeuralNetTorch, were employed to address the issue of insufficient prediction …

Cmsi Translations #38: Furious Seas, Raging Waves: The Pla’S Development Of Sea-To-Shore Strike Capabilities, Tian Ying

CMSI Translations

At present, driven by anxiety and panic over China’s rising power and a desire to contain its peaceful development, U.S. political circles frequently provoke China on core interests related to Taiwan. They have even schemed to exploit “Taiwan Independence” elements to cross a red line regarding forced reunification. Such plots aim to “Ukrainize” Taiwan and drive the island to ruin, thereby raising the cost of reunification for China in order to weaken the country’s national strength and curb its development. Meanwhile, in recent months, “Taiwan Independence” forces on the island, emboldened by the backing of external powers, have acted with …

The Nevada Innovation Economy And Federal Funding, Len Jessup, Sean Curry

Policy Briefs and Reports

This policy brief examines the nascent Nevada innovation economy and the funding capacity of the federal government. The analysis highlights how federal innovation programs have stimulated research, commercialization, and long-term economic development in Nevada. Using a multi-level framework encompassing technological, industrial, and spatial innovation, this policy brief documents how federal research funding, augmented by state programs and university infrastructure, has contributed to the formation of new research capabilities, seeded industry clusters and startups, and expanded workforce capacity. The findings suggest that federal resources have been productively deployed to date, generating significant scientific, economic, and social returns, but that more must …

The Current - Volume 37 Issue 4, Nova Southeastern University

Student Newspapers

No abstract provided.

Astrophysical Radiative Capture Reaction Rates In Light Nuclei: A Review Of Results From The Modified Potential Cluster Model, S. B. Dubovichenko, B. M. Yeleusheva, A. S. Tkachenko, R. Ya. Kezerashvili

Publications and Research

A review of results obtained within a single theoretical framework—the Modified Potential Cluster Model (MPCM)—is presented for astrophysical radiative capture reactions involving the lightest and 1p-shell nuclei. The approach has been applied to reactions relevant to the r-process, the CNO and HCNO cycles, and parts of the Big Bang nucleosynthesis (BBN) and post-BBN scenarios. The model incorporates the classification of orbital states according to Young’s diagrams and has been successfully applied to describe the available experimental data on the total cross sections of the radiative capture of neutrons, protons, and the lightest clusters by 40 light nuclei at astrophysical energies. …

The External Reach Of Eu Labour Law: Channels Of Influence And The Case Of Vietnam, Małgorzata Grześków

Hasanuddin Law Review

This article examines how EU labour-law standards influence labour-related compliance beyond EU territory, despite the predominantly territorial character of public enforcement. It addresses the mismatch between the EU's state-centred enforcement framework and the transnational organisation of production, in which labour risks frequently arise in third-country supply chains. The aim of the article is to conceptualise ``external reach'' and to assess the main channels through which EU labour-related expectations operate outside the Union. Methodologically, the article combines doctrinal analysis with conceptual clarification and applies this framework to the case of Vietnam. It identifies three principal channels of external reach: labour provisions …

2026 Nsf Workshop On Research Data Management In Construction Engineering: Challenges And Opportunities, Bo Xiao, Ronghua Xu

Michigan Tech Publications

The growing use of digital technologies and artificial intelligence (AI) in construction research has increased the demand for reliable, accessible, and reusable research data. Construction projects generate diverse datasets across different activities, organizations, and information systems, yet managing and sharing these resources for broader research use remains challenging. The 2026 NSF Workshop on Research Data Management in Construction Engineering: Challenges and Opportunities was organized to examine these needs and promote collaboration between construction research, open science, and cyberinfrastructure communities.

The workshop focused on four objectives: (1) identifying technical and social challenges associated with managing and reusing construction research data; (2) …

Use Of The Well-Star Model And Well-Star Graphic In Healthcare, Fidan Korkut-Owen, Zubeyde Akpakir, Dean W. Owen

Journal of Wellness

No abstract provided.