Study On Mechanical Properties Of Improved High Liquid Limit Soil Based On Solid Waste,
2025
School of Transportation, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Study On Mechanical Properties Of Improved High Liquid Limit Soil Based On Solid Waste, Zhang Yafei, Qin Yalan, Wu Jiacheng, Zhang Rui, Gao Yingli, Zhu Zhanghuang, Li Lu
Journal of China & Foreign Highway
To improve the application of the solid waste polymer-modified high liquid limit soil as filler in the upper embankment or road bed work area,this study prepared colloidal polymer and improved materials of traditional cement by using industrial solid waste (fly ash,steel slag,etc.) and compared them with the improved high liquid limit soil to investigate its mechanical properties and economic benefits.The mechanical properties of high liquid limit soil improved by the colloidal polymer of solid waste,as well as its stability and durability when immersed in water were studied through a liquid-plastic limit test,a laboratory compaction test,a shrinkage test,a California bearing ratio …
Comparison Of Calculation Methods For Local Scour In Bridge Pier Foundation Of Piles-Cushion Cap,
2025
Hubei Communications Planning and Design Institute Co ., Ltd., Wuhan, Hubei 430051, China
Comparison Of Calculation Methods For Local Scour In Bridge Pier Foundation Of Piles-Cushion Cap, Liu Hui, Jiang Yanhua, Yan Jiechao
Journal of China & Foreign Highway
In order to analyze the calculation methods for local scour in bridge pier foundation of piles-cushion cap,this paper listed the six common Chinese and foreign calculation methods,described their calculation process and selection of calculation parameters,and analyzed the difference of the calculation methods according to typical engineering examples.The results show that there are differences in the selection of parameters in the calculation methods for local scour in bridge pier foundation of piles-cushion cap in Code for Survey and Design on Hydrology of Railway Engineering (TB 10017—2021 ) and Hydrological Specifications for Survey and Design of Highway Engineering (JTG C 30—2015 ),and …
A Method For Determining Integrity Degree Of Tunnel Surrounding Rock Based On Mobilenet,
2025
School of Civil and Environmental Engineering ,Changsha University of Science & Technology, Changsha, Hunan 410114, China
A Method For Determining Integrity Degree Of Tunnel Surrounding Rock Based On Mobilenet, Liu Houxiang, Yang Caixia
Journal of China & Foreign Highway
To determine the integrity degree of tunnel surrounding rock more efficiently,a precise determination method for the integrity degree of tunnel surrounding rock based on the lightweight neural network MobileNet-v 2 was proposed.Firstly,the image was grayscaled and denoised,and the edges of cracks were detected.Then,the lightweight neural network MobileNet-v 2 model was pre-trained on the ImageNet dataset,and combined with transfer learning to complete data detection on the training,validation,and testing sets.Finally,a comparative experiment was conducted with traditional neural networks RestNet- 50 and VGG 16.By identifying the area,width,and length of cracks,the crack ratio Ks was introduced as an indicator to evaluate the integrity of …
Study On Thermal Corrosion Resistance Of Asphalt Modified By Phase Change Materials,
2025
School of Transportation, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Study On Thermal Corrosion Resistance Of Asphalt Modified By Phase Change Materials, Li Ping, Wang Zhijian, Zheng Zhipeng, Yi Chengxi, Zhou Dexiang
Journal of China & Foreign Highway
In order to address the degradation issues faced by asphalt mixtures in airport runways and highway pavement,particularly focusing on thermal stability and thermal corrosion under high-temperature conditions,this paper investigated the impact of phase change materials (PCMs ) on the thermal corrosion resistance of asphalt.Three types of PCMs were utilized to jointly modify SBS-modified asphalt,and a series of tests were conducted to systematically analyze the performance of the modified asphalt,including thermogravimetric-differential scanning calorimetry (TG-DSC ) analysis,heat storage and release performance evaluation,laboratory thermal corrosion simulation of asphalt,three-index testing,and dynamic shear rheometer (DSR ) testing.The results indicate that PCMs can effectively regulate asphalt …
Construction And Application Of Knowledge Graph For Quality Management In Bridge Pile Engineering,
2025
Guangdong Transportation Industry Investment Co ., Ltd., Guangzhou, Guangdong 510030, China
Construction And Application Of Knowledge Graph For Quality Management In Bridge Pile Engineering, Fang Xiaofeng, Dong Runhao, Gu Yanke, Pan Yanran
Journal of China & Foreign Highway
To enhance the efficiency of quality management in bridge pile foundation construction,this study constructed a knowledge graph applicable to the construction field of bridge pile foundation engineering to enable systematic representation and intelligent organization of knowledge.A methodology combining top-down design and bottom-up design was adopted to develop a framework for constructing a knowledge graph for the quality management of bridge pile foundation construction that encompasses both the schema layer and the data layer.The schema layer was established through ontology modeling,clarifying the concept categories,hierarchical structure,and their attribute relationships.The data layer employed a bidirectional long short-term memory (BiLSTM ) network integrated with …
Numerical Simulation Analysis On Support Performance Of Inclined-Vertical Combined Double-Row Interlocked Steel Pipe Piles,
2025
School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Hunan Construction Investment Group, Changsha, Hunan 410004, China
Numerical Simulation Analysis On Support Performance Of Inclined-Vertical Combined Double-Row Interlocked Steel Pipe Piles, Zhou Yi, Zhang Ning, Wang Yanhua, Zhou Dequan
Journal of China & Foreign Highway
To select appropriate support structures in foundation pit engineering of underground tunnels for the Hong Kong International Airport (HKIA ),this paper proposed the use of inclined-vertical combined interlocked steel pipe piles,which are beneficial for support,water isolation,and recovery.Numerical simulations were conducted using finite element software Midas GTS NX to analyze the effect of different combination types and inclination angles on the engineering response of the inner-row piles of inclined-vertical combined double-row interlocked steel pipe piles.The results show that the inclined-vertical combined double-row piles reduce the horizontal displacement at the top of the inner-row piles by approximately 50% and decrease the peak …
Influence Mechanism Of Static And Dynamic Loading On Adsorbed Bound Water And Deformation In High Liquid Limit Soils,
2025
Hainan Transportation Engineering Construction Bureau, Haikou, Hainan 570100, China
Influence Mechanism Of Static And Dynamic Loading On Adsorbed Bound Water And Deformation In High Liquid Limit Soils, Fang Zhongwang, Zhou Shiji E, Xiao Yupeng, Peng Xin, Zhang Rui
Journal of China & Foreign Highway
In order to reveal the evolution law of adsorbed bound water and the deformation characteristics of high liquid limit soil under static and dynamic loading,Hainan high liquid limit soil and Hunan clayey sand were selected as comparative samples.Through consolidation,consolidation-creep,and dynamic triaxial tests,the deformation patterns of high liquid limit soil under different loading conditions were obtained.By combining nuclear magnetic resonance tests,the variation pattern of adsorbed bound water content in specimens before and after the consolidation and dynamic triaxial tests was studied.The results show that under static loading,the compression coefficient of high liquid limit soil meets the requirements of the Specifications for …
Study On Creep Mechanical Properties And Constitutive Models Of Silty Clay With Different Compaction Degrees,
2025
CCCC Second Highway Engineering Co ., Ltd., Xi’an, Shaanxi 710061, China
Study On Creep Mechanical Properties And Constitutive Models Of Silty Clay With Different Compaction Degrees, Li Mingchao, Wu Gangrong
Journal of China & Foreign Highway
In order to ensure the smooth construction and long-term stable operation of silty clay sections in the Zhoukou –Pingdingshan highway project,this paper conducted one-dimensional creep tests on silty clay samples with different compaction degrees under different stress levels and studied the effect law of compaction degree on its long-term creep mechanical properties.By establishing the corresponding creep constitutive models,a theoretical basis was provided for the prevention and control of creep failure in silty clay subgrades in engineering practice.Research results show that:① Under the same stress level,with the increase of compaction degree,the instantaneous strain,creep strain,and total strain of the samples all decrease …
Workability And Compressive Strength Of Steel Slag Powder-Cement-Based Self-Compacting Iron Tailings Mortar,
2025
China Railway Construction Group Co ., Ltd., Beijing 100040, China
Workability And Compressive Strength Of Steel Slag Powder-Cement-Based Self-Compacting Iron Tailings Mortar, Yang Zaiqing, Jin Shengji, Zhang Xiaogang, Sheng Guohua
Journal of China & Foreign Highway
Steel slag and iron tailings are typical industrial solid waste.Their large-scale stockpiling occupies a significant amount of land and has a negative impact on the environment.To respond to the Guiding Opinions on the Comprehensive Utilization of Bulk Solid Waste in the 14th Five Year Plan and expand the use of steel slag powder and iron tailings sand as concrete admixtures and aggregates,this study prepared steel slag powder-cement-based self-compacting iron tailings mortar.The workability index of mortar was determined through two tests:the flow expansion test and the V-shaped funnel test.Additionally,the compressive strength of the mortar was measured using a servo press.The results …
Mechanical Properties Of Transition Section Of Cable-Stayed Bridge With Kilometer-Scale Steel-Uhpc Composite Girders,
2025
Bridge Design Institute, CCCC Second Highway Consultants Co ., Ltd., Wuhan, Hubei 430000, China
Mechanical Properties Of Transition Section Of Cable-Stayed Bridge With Kilometer-Scale Steel-Uhpc Composite Girders, Li Qiu, Zhi Haitao, Peng Yanqing, Peng Jianxin, Yuan Qin, Wu Xuewei
Journal of China & Foreign Highway
To study the mechanical properties of the steel-concrete composite section between steel box girders and steel-ultra-high performance concrete (UHPC ) composite girders,the Guanyinsi Yangtze River Bridge with a main span of 1 160 m was used as the background.Through refined finite element modeling,the stress characteristics under the most unfavorable load conditions and transmission mechanism of the steel-concrete composite section were analyzed,and the main factors affecting the stress of the composite section were discussed.The results indicate that under the most unfavorable load conditions,the stress of each component in the steel-concrete composite section is within 160.4 MPa,which is lower than the material …
Wind Tunnel Test Study On Wind-Resistant Performance Of Shuangliu Yangtze River Bridge,
2025
Hubei Communications Investment Group Co ., Ltd., Wuhan, Hubei 430051, China
Wind Tunnel Test Study On Wind-Resistant Performance Of Shuangliu Yangtze River Bridge, Li Xiukun, Wu Xuewei, Yang Can, Peng Xiaobin, Huang Zhiwen
Journal of China & Foreign Highway
The main bridge of Shuangliu Yangtze River Bridge on the Xingang Expressway in Wuhan City is a single-span suspension bridge with a main span of 1 430 m and a bridge tower of 272.75 m.The stiffening girder is in the form of a closed flat steel box girder with a width of 50.5 m.In order to study the wind-resistant performance of the bridge during operation,the performance of vortex-induced vibration of the girder was tested through wind tunnel tests of section model with two different geometric scales of 1∶60 and 1∶30,respectively.The sensitivity of the vortex-induced vibration response to the structural damping …
Application Of Forward-Ba Ck Ana Lysis And Difference Iteration Method For Solving Initial Cable Tension Of Arch Bridge,
2025
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong 510641, China
Application Of Forward-Ba Ck Ana Lysis And Difference Iteration Method For Solving Initial Cable Tension Of Arch Bridge, Xu Yufeng, Li Zihui, Zhang Zhantao
Journal of China & Foreign Highway
This article presented a method that c ombined the forward-back analysis method and the difference iteration method to solve the initial cable tension according to the state of a built bridge for an arch bridge.Given the known target state of the bridge,a reasonable set of initial cable tensions was determined as the initial value of iteration by the forward-back method.These initial tensions were then applied to the calculation model based on the actual construction process.Through the difference iteration method,the initial cable tensions were optimized.The results show that the method can effectively determine the final cable tension that meets engineering precision …
Experimental Study On Bending And Shear Performance Of Joint With Looped Reinforcement In Prefabricated Components,
2025
College of Civil Engineering, Tongji University, Shanghai 200092, China; Shanghai Bridging Engineering Consulting Co ., Ltd., Shanghai 200084, China
Experimental Study On Bending And Shear Performance Of Joint With Looped Reinforcement In Prefabricated Components, Liu Zhiquan, Hu Ke, Shi Xuefei, Zhong Yuzhuo
Journal of China & Foreign Highway
A joint with looped reinforcement is a type of steel bar connection structure with wet joints characterized by quick construction.In order to study the bending and shear stress performance and load-bearing capacity characteristics of the wet joints,four bearing capacity tests for bending and shear were designed and conducted for common application scenarios.The load,strain,and displacement changes of the specimens during the test process were tested,and the failure characteristics,load–displacement changes,and ultimate bearing capacity of this type of wet joint were analyzed.The results show that the wet joint with looped reinforcement has good ductility and conforms to the design principles of reinforced concrete.The …
Bending Moment Calculation And Reinforcement Recommendations For Cast-In-Place Cover Slabs In Slab Culverts,
2025
Hunan Provincial Communications Planning, Survey & Design Institute Co ., Ltd., Changsha, Hunan 410200, China
Bending Moment Calculation And Reinforcement Recommendations For Cast-In-Place Cover Slabs In Slab Culverts, Li Yukun, Wan Kecheng, Fu Fulin
Journal of China & Foreign Highway
To address the complexity and lack of practical methods for calculating bending moments of cast-in-place cover slabs in slab culverts,the slabs were simplified as one-way slabs with a pair of opposing edges simply supported and the other pair of edges free.Theoretical formulas for calculating the bending moments within the slabs under uniformly distributed loads were derived using elastic theory.The accuracy of the theoretical formulas was validated through case studies via finite element software.Various combinations of length,width,and fill heights exist in highway projects,making the use of theoretical formulas for bending moment calculations cumbersome.Therefore,a simplified method for calculating maximum bending moments in …
Research On Whole-Hole Testing Technology For Under-Anchor Tension In Prestressed Concrete Girders,
2025
Ningbo Traffic Construction Engineering Test and Testing Center Co ., Ltd., Ningbo, Zhejiang 315100, China
Research On Whole-Hole Testing Technology For Under-Anchor Tension In Prestressed Concrete Girders, Zhu Jianzhao, Dong Hao, Gu Jungang, Feng Lu, Li Shuyang, Zhang Shoulong, Chen Chaung
Journal of China & Foreign Highway
This study aims to propose a new testing method,namely whole-hole back-pull testing technology,to reduce costs and increase efficiency in under-anchor tension testing,effectively addressing the engineering challenges of large testing volume and tight schedules.Based on the principle of the traditional back-pull method,the mechanism of whole-hole back-pull testing technology was explained through theoretical analysis and formula derivation.Technical optimization was carried out in conjunction with experimental research,and a complete application method was proposed.A feasibility analysis was carried out.The study obtained the simplified mechanical model and typical test curves of the whole-hole back-pull testing technology and proposed a formula and application method for determining …
Settlement Mechanism And Re Inforcement Measure For Large-Diameter And Small-Clearance Parallel P Ipe Jacking Undercrossing Complex Building,
2025
CCCC-SHB Forth Engineering Co ., Ltd., Luoyang, Henan 471013, China; School of Civil Engineering and Architecture, Henan University of Scien ce and Technology, Luoyang, Henan 471000, China
Settlement Mechanism And Re Inforcement Measure For Large-Diameter And Small-Clearance Parallel P Ipe Jacking Undercrossing Complex Building, Tang Gang, Huang Wen Jie, Zhang Wenbo, Li Wenjie, Liang Bin
Journal of China & Foreign Highway
This study aims to study the settlem ent changes and distribution of various parts of a complex building during the construction of a large-diameter and small-clearance parallel pipe jacking undercrossing complex building.On the basis of the pipe jacking project of water quality guarantee engineering 2# for Tiegang –Shiyan Reservoir in Shenzhen,the settlement mechanism of pipe jacking undercrossing construction was analyzed.Through numerical simulation,the influence of the presence or absence of grouting reinforcement,and parameters such as longitudinal spacing and burial depth of pipe jacking on the variation trend and distribution law of building settlement was analyzed.The theoretically predicted values,numerical simulation values,and on-site …
Bridge Damage Detection And Bim Localization Methods Based On Image Recognition,
2025
Central Southern Safety and Environment Technology Institute Co ., Ltd., Wuhan, Hubei 430071, China
Bridge Damage Detection And Bim Localization Methods Based On Image Recognition, Li Yu, Guo Hongjun
Journal of China & Foreign Highway
To overcome insufficient information of 2D detection data in traditional bridge maintenance,which hinders precise decision-making,this study proposed an automated method based on deep learning and structure from motion (SfM ) technology,which realized the complete process from image recognition to the accurate mapping of damage information in a building information model (BIM ).First,the YOLOv 8 deep learning model was used to automatically detect bridge surface damage.Second,the SfM technology was applied for the local 3D reconstruction of the damage area and to determine the 3D coordinates of the damage.Then,the least squares method was used to align the local coordinate system with the …
Bending Capacity And Strengthening Design With Bonding Steel Plates Of Concrete Sections In French Standards,
2025
Research and Development Center on International Engineering Standards, CCCC, Wuhan, Hubei 430056, China; CCCC Second Highway Consultant Co ., Ltd., Wuhan, Hubei 430056, China
Bending Capacity And Strengthening Design With Bonding Steel Plates Of Concrete Sections In French Standards, Wu Zi
Journal of China & Foreign Highway
In the French general technical clauses widely used in Francophone African countries,only the calculation principles for the bending capacity of normal concrete sections are provided,with explicit formulas not listed,and the strengthening design of structures is not involved.According to the fundamental principles of concrete structures and French standard regulations,the calculation formulas for the bending capacity of normal concrete sections were derived.On the basis of the assumptions of strengthening design,calculation formulas for strengthening with bonding steel plates were derived.Through practical engineering calculations conducted on the VDN Expressway project in Senegal,the applicability and reliability of the proposed formulas were verified.This study can offer …
Quantitative Evaluation Of Tunnel Rock Mass Integrity Based On Mwd Technology,
2025
Guangxi Road and Bridge Engineering Group Co ., Ltd., Nanning, Guangxi 530200 ,China
Quantitative Evaluation Of Tunnel Rock Mass Integrity Based On Mwd Technology, Zhang Kunmu, Peng Hao, Liang Ming, Han Yu, Song Guanxian
Journal of China & Foreign Highway
In tunnel construction,the quantitative evaluation of rock mass integrity heavily relies on information from the exposed face,and there are challenges when drilling data is used for integrity evaluation.To this end,this study introduced a novel method for quantitative evaluation of rock mass integrity during drilling,integrating numerical statistics with machine learning.A substantial dataset of digital drilling data was collected,covering three common types of rock mass integrity:relatively intact,relatively fractured,and fractured.Subsequently,a high-performance random forest model for the classification of rock mass integrity was developed through data preprocessing and hyperparameter optimization.The interpretability of the model ’s predictive results was enhanced using Shapley additive explanations (SHAP …
Object Detection And Tracking Based On Fusion Of Radar And Camera On Highway Side,
2025
Putian Management Branch, Fujian Expressway Group Co ., Ltd., Putian, Fujian 351100, China
Object Detection And Tracking Based On Fusion Of Radar And Camera On Highway Side, Zeng Yongqiang, Zhang Yonghua, Zhao Hui, Liu Xin, Xu Mingsheng, Shen Jianwei, Hu Zhiwei, Chen Zhenquan
Journal of China & Foreign Highway
Camera is the most widely used sensor in intelligent transportation systems (ITS),but the decline of detection and positioning accuracy caused by target occlusion and external environment interference has always been an important factor restricting the development of ITS.In order to solve this problem,a multi-mode fusion target detection and tracking method based on millimeter-wave radar (MWR ) and camera on highway side was designed.Compared with cameras,high-resolution MWR had better measurement accuracy and weather robustness,serving as a better complement to camera perception.The proposed method used the center point-based radar and camera fusion algorithm for target detection and adopted the greedy algorithm for …
