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Full-Text Articles in Construction Engineering and Management

Mechanical Properties And Micro Analysis Of Cement Stabilized Steel Slag Macadam Base, Wan Tianbao Jul 2023

Mechanical Properties And Micro Analysis Of Cement Stabilized Steel Slag Macadam Base, Wan Tianbao

Journal of China & Foreign Highway

With steel slag as coarse aggregate, cement-stabilized steel slag macadam base material was designed and prepared by selecting three kinds of cement dosage and three kinds of steel slag content. The mechanical properties of cement-stabilized steel slag macadam base were studied through compaction and unconfined compressive strength tests, and XRD and SEM microscopic tests were carried out to analyze the mineral composition and microscopic morphology of steel slag and mixture and clarify the internal mechanism of hydration product formation and microstructure and strength formation. The results show that the maximum dry density and optimum moisture content of cement-stabilized steel slag …

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Analysis Of Influence Of Moisture Content ⁃Temperature Dual Factor On Mechanical Properties Of Red Clay, Wang Jiangtao, Bao Temenbaiyila, Yang Weiguang, Zhou Qi, Fu Helin Jul 2023

Analysis Of Influence Of Moisture Content ⁃Temperature Dual Factor On Mechanical Properties Of Red Clay, Wang Jiangtao, Bao Temenbaiyila, Yang Weiguang, Zhou Qi, Fu Helin

Journal of China & Foreign Highway

Under the new climatic environment and engineering construction requirements, engineering problems involving red clay are becoming more and more prominent, and it is urgent to deeply grasp the mechanical and engineering properties of residual slope red clay. The typical red clay in Hunan Province was studied in this paper. Based on the unconsolidated undrained direct shear test, this paper studied the mechanical properties of residual slope red clay under the influence of moisture content and temperature, focusing on the most unfavorable conditions affecting the mechanical properties of red clay. The results show that: ① The shear strength of red clay …

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Influence Of Steel Fiber And Polymer Emulsion On Mechanical Properties And Microstructure Of Concrete, Guo Guanglei, Sun Shiqiang, Li Ying, Zheng Yiwei, Mei Yingjun Jul 2023

Influence Of Steel Fiber And Polymer Emulsion On Mechanical Properties And Microstructure Of Concrete, Guo Guanglei, Sun Shiqiang, Li Ying, Zheng Yiwei, Mei Yingjun

Journal of China & Foreign Highway

The microstructure and mechanical properties of concrete were improved by adding steel fiber and polymer emulsion. The working properties and mechanical properties of steel fiber concrete, polymer emulsion-modified concrete, and steel fiber polymer concrete were tested at 3 d, 28 d, and 90 d. Nitrogen adsorption test, mercury injection test, and density method were used to obtain the total pore volume, median pore size, and closed porosity of concrete. The influence of steel fiber and polymer emulsion on the microstructure and mechanical properties of concrete was analyzed. The results show that the compressive strength of concrete after adding steel fiber …

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Effect Of Nano ⁃Metakaolin On Frost Resistance Of Concrete, Li Zhenfa Jul 2023

Effect Of Nano ⁃Metakaolin On Frost Resistance Of Concrete, Li Zhenfa

Journal of China & Foreign Highway

The denudation per unit area, relative dynamic elastic modulus, mechanical strength, and fracture characteristics of concrete with different nano-metakaolin contents before and after freezing and thawing were studied. The results show that nano-metakaolin can significantly improve the freezing resistance of concrete, and the denudation per unit area and relative dynamic elastic modulus loss rate of modified concrete are significantly improved compared with the reference group. The mechanical strength and fracture properties of nano-mekaolin-modified concrete before and after freezing and thawing are higher than those of the control group, and the mechanical strength, fracture toughness, and fracture energy loss rate are …

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Traffic Conflict Analysis Of Multila Neexpressway Based On Simulation, Ceng Yuekai, Zhou Tao, Chen Yazhen Jul 2023

Traffic Conflict Analysis Of Multila Neexpressway Based On Simulation, Ceng Yuekai, Zhou Tao, Chen Yazhen

Journal of China & Foreign Highway

In order to prevent traffic accidents on multi-lane expressways, the VISSIM traffic simulation model was established based on three types of multi-lane traffic conflicts: mixed passenger and cargo type, separated passenger and cargo type, and separated main and auxiliary type. SSAM software was used to obtain traffic conflict data, and the form, quantity, and location of the conflicts were analyzed. The results show that traffic conflicts are the most under the mixed passenger and cargo type, which are mainly distributed in the upper 100 m range of the innermost lane, outermost lane, and deceleration lane. The traffic conflicts under the …

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Risk Analysis Of Highway Nighttime Maintenance Operation Based On Sem, Fan Jinhua, Zou Leping, Qi Shaoren, Tian Zhen Jul 2023

Risk Analysis Of Highway Nighttime Maintenance Operation Based On Sem, Fan Jinhua, Zou Leping, Qi Shaoren, Tian Zhen

Journal of China & Foreign Highway

In order to analyze the factors affecting the risk of nighttime expressway maintenance operation and quantitatively assess the degree of influence of various factors on the risk of nighttime maintenance operation, this paper extracted five first-level indicators and 36 second-level indicators that affect the risk of operation through literature review, accident data, and questionnaire survey and built an evaluation system. The first-order and second-order confirmatory factor analysis models were constructed by using a structural equation model (SEM) based on 343 questionnaires of the nighttime maintenance operation risks. The results show that the driver factor has the greatest effect on the …

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Construction And Management Practice Of Green Highways In Qinling Mountains, Gao Shuohan, Zhang Lei, Zhao Fuqiang, Wang Dong, Li Gang, Liu Xuexin, Yao Jialin Jul 2023

Construction And Management Practice Of Green Highways In Qinling Mountains, Gao Shuohan, Zhang Lei, Zhao Fuqiang, Wang Dong, Li Gang, Liu Xuexin, Yao Jialin

Journal of China & Foreign Highway

In order to practice the concept of green development and promote the transformation and upgrading of highways in Qinling Mountain areas, the paper took Taibai–Fengxian Expressway, a typical demonstration project of green highway in Shaanxi Province as the basis to explore the practical experience of green highway construction suitable for Qinling Mountain areas. The project is located in the hinterland of the Qinling Mountains, with a sensitive water environment, important ecological functions, and rich tourism resources. In addition, it adopts EPC mode. Through the all-round and whole-process implementation of the green concept, the project was planned and launched from the …

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Mechanical And Durability Properties Of Fly Ash Geopolymer Concrete – A Review, Ali Shebli, Jamal Khatib, Adel Elkordi Jun 2023

Mechanical And Durability Properties Of Fly Ash Geopolymer Concrete – A Review, Ali Shebli, Jamal Khatib, Adel Elkordi

BAU Journal - Science and Technology

Geopolymers have emerged as a promising alternative for Ordinary portland cement (OPC) in construction industry, due to their potential to minimize the emissions of carbon dioxide (CO2) and improve the efficiency of waste recycling. This paper aims to study the fresh and hardened properties of fly ash geopolymer concrete (GPC), as well as to review the raw materials used in the production of geopolymers. Several factors impact the mechanical and durability properties of fly ash GPC, including the specific type of fly ash utilized, the curing temperature, the alkaline activator (AA) concentration, and the type of AA used. …

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Toward Low Carbon Footprint And Lightweight Masonry Alkali-Activated Material, Zina Ebrahim, Mohammad Mastali, Marc Maguire Jun 2023

Toward Low Carbon Footprint And Lightweight Masonry Alkali-Activated Material, Zina Ebrahim, Mohammad Mastali, Marc Maguire

Durham School of Architectural Engineering and Construction: Faculty Publications

The portland cement concrete industry and the masonry industry are undergoing changes in response to skilled labor shortages and concerns over climate and pollution. There may be interest from parts of the industry in lower carbon footprint and lightweight masonry products. Toward this aim, the use of hemp shiv--the woody core of the hemp plant--in alkali-activated concrete was investigated herein and shown to have a wide range of impacts on the hardened state characteristics of a material suitable for structural concrete masonry units (CMUs) in accordance with ASTM C90 requirements. Hemp shiv is well known for its use in hempcrete, …

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Exploring The Potential Of Pavegen’S Kinetic Energy Generating Floor For Sustainable Energy Solutions: A Proposal For Cal Poly Slo, Brandon J. Cuneo Jun 2023

Exploring The Potential Of Pavegen’S Kinetic Energy Generating Floor For Sustainable Energy Solutions: A Proposal For Cal Poly Slo, Brandon J. Cuneo

Construction Management

This paper proposes the installation of Pavegen's kinetic energy generating floors at Cal Poly’s campus as a sustainable energy solution. Pavegen has developed a pioneering technology that converts footsteps into clean and renewable energy. The versatility of these floors is demonstrated through successful implementations in various settings, such as transportation hubs and public spaces, generating power from foot traffic. Collaborations with Schneider Electric, installation at Dupont Circle, and integration at Heathrow Airport showcase the potential for sustainable urban infrastructure. This paper outlines research conducted on Pavegen and similar solutions, including communication with company representatives and examining proposed installation locations at …

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Integrating Steel Slag Aggregates Into Asphalt Paving By Harmonizing Availability, Quality, Economics, And The Environment, Timothy R. Murphy May 2023

Integrating Steel Slag Aggregates Into Asphalt Paving By Harmonizing Availability, Quality, Economics, And The Environment, Timothy R. Murphy

Theses and Dissertations

This thesis provides guidance on how to balance matters related to the environmental stewardship, market sources, origin and uses, material properties, performance, and economic impact of using slag materials in pavements. The literature on this topic provides numerous references on the use of slag materials for specific applications, and this thesis aims to make use of those references along with other data from the author to describe slag materials from a holistic perspective and provide some suggestions for balancing several factors that impact optimal use of this resource within pavement structures. Discussion is given to the increased importance of recycling …

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Application Research And Prospect Of Passive Battered Pile, Zhou Dequan, Wang Chuangye, Zhou Yi, Zhao Yadang May 2023

Application Research And Prospect Of Passive Battered Pile, Zhou Dequan, Wang Chuangye, Zhou Yi, Zhao Yadang

Journal of China & Foreign Highway

Battered piles oriented in specific directions demonstrate superior horizontal load-bearing capacity compared to vertical piles. However, the working mechanism of battered piles remains inadequately understood, and corresponding design standards are yet to be established. These limitations hinder the effective utilization and application of the horizontal load-bearing and stability potential of battered piles. This paper comprehensively analyzes the soil-pile interaction mechanisms, horizontal displacement, and load-bearing behavior of passive battered piles and their composite systems under lateral unloading and lateral loading conditions, using model tests, numerical simulations, and theoretical analysis. In addition, it proposes future research directions aimed at advancing the study …

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Study On Applicability Of Flexible Gabion Revetment In Soft Soil Subgrade In Lake District, Su Weiwei, Lei Mingxuan, Liu Guotian, Zhang Liujun, Liu Junyong May 2023

Study On Applicability Of Flexible Gabion Revetment In Soft Soil Subgrade In Lake District, Su Weiwei, Lei Mingxuan, Liu Guotian, Zhang Liujun, Liu Junyong

Journal of China & Foreign Highway

Based on FLAC3D finite difference software, this paper conducts numerical simulations of both flexible gabion revetment structures and rigid revetment structures to compare their deformation and stress characteristics. The results indicate that the flexible gabion revetment structure demonstrates excellent applicability for soft soil subgrades in lake districts. Compared with rigid revetment structures, the gabion revetment structure improves overturning stability through coordinated deformation within the foundation. It significantly reduces the basal stress, thus lowering the bearing capacity requirements for the foundation, and ensures a more uniform stress distribution at the base, minimizing differential settlement and enhancing foundation stability. Moreover, the gabion …

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Research And Application Of Dynamic Compaction Treatment Method For Highway Subgrade In Karst Development Area, Liu Xiaoming, Wang Yigang, Zhao Minghua May 2023

Research And Application Of Dynamic Compaction Treatment Method For Highway Subgrade In Karst Development Area, Liu Xiaoming, Wang Yigang, Zhao Minghua

Journal of China & Foreign Highway

This paper utilizes discrete-continuum coupled numerical simulation to investigate the failure modes of karst cave roofs with varying spans under specific compaction energy levels. The relationship between the span of the cave roof and the compaction energy required to cause roof collapse is established, providing an estimation method for the maximum unsupported span of cave roofs within the subgrade area. Based on this, the stability of karst cave foundations under the influence of subgrade loads can be evaluated. Depending on the results, a double-layer reinforced continuous concrete slab can be installed in the pavement base to enhance stability and mitigate …

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Deformation Monitoring Of Highway Subgrade In Alpine Area Based On Spaceborne Insar, Luo Boren, Yu Fei, Yu Shaohuai May 2023

Deformation Monitoring Of Highway Subgrade In Alpine Area Based On Spaceborne Insar, Luo Boren, Yu Fei, Yu Shaohuai

Journal of China & Foreign Highway

The harsh geological and climatic conditions in the high-altitude alpine regions of Northwest China, including the widespread distribution of seasonal permafrost and other unfavorable geological bodies, significantly affect the service life of highways and threaten driving safety. Traditional highway deformation monitoring methods are inefficient, limited in coverage, and provide incomplete deformation information. This study employs spaceborne InSAR technology for highway deformation monitoring, enabling large-scale extraction of deformation information along highway corridors. The findings reveal the deformation patterns of highway subgrades in permafrost regions, offering fundamental data for targeted remediation of hazardous highway sections. This approach ensures the scientific construction and …

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Study On Treatment Of Karst Foundation By Dynamic Compaction, Lyu Jiang, Zhao Hui, Yang Biao May 2023

Study On Treatment Of Karst Foundation By Dynamic Compaction, Lyu Jiang, Zhao Hui, Yang Biao

Journal of China & Foreign Highway

Dynamic compaction is a commonly used method for treating karst foundations with cavities; however, the design parameters of dynamic compaction under different working conditions lack clear standards. This paper employs the finite element software Abaqus to simulate the effects of surrounding rock quality and karst roof thickness on the stability of karst cave roofs during dynamic compaction treatment. The results indicate that the vertical displacement and maximum tensile stress of karst cave roofs are negatively correlated with roof thickness. For Grade II and III surrounding rocks with better properties, no cave collapse occurred after dynamic compaction treatment. In contrast, for …

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Research On Compaction Control Method Of High Water Content And High Liquid Limit Clay In Guizhou Province, Xu Shuliang May 2023

Research On Compaction Control Method Of High Water Content And High Liquid Limit Clay In Guizhou Province, Xu Shuliang

Journal of China & Foreign Highway

To study and verify the compaction control method for high liquid limit clay subgrade in the humid and rainy regions of Guizhou Province, a series of experiments were conducted on high water content and high liquid limit clay from the Kaiyang Expressway (Kaili to Yangjia) in Guizhou. The experiments included wet heavy compaction tests, CBR strength tests, basic physical property tests, consolidation tests, thermogravimetric analysis, and trial road tests to analyze the performance of high liquid limit clay in road applications. The results show that for high liquid limit clay, increasing compaction energy does not always improve performance, as excessive …

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Study On Dynamic Resilience Modulus Prediction Model Of Subgrade Fine‐Grained Soil Based On Physical Property Parameters, Tan Wei May 2023

Study On Dynamic Resilience Modulus Prediction Model Of Subgrade Fine‐Grained Soil Based On Physical Property Parameters, Tan Wei

Journal of China & Foreign Highway

This paper investigates representative fine-grained subgrade soils from a highway project. Samples with varying water content and compaction degrees were prepared, and the effects of water content, compaction degree, plasticity index, dynamic deviator stress, and confining pressure on the dynamic resilience modulus (Mr) were analyzed using dynamic triaxial tests. Matlab’s global optimization toolbox was employed to identify the relationships between model parameters ki and physical property indices, thus constructing a prediction model for the dynamic resilience modulus based on physical properties. The predictive performance of this model was compared with conventional models outlined in existing standards. The results show that …

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Study On Failure Mechanism Of Rainfall Slope Based On Full‐Scale Slope Model Experiment, Zhang Yongchuang May 2023

Study On Failure Mechanism Of Rainfall Slope Based On Full‐Scale Slope Model Experiment, Zhang Yongchuang

Journal of China & Foreign Highway

Field investigations in debris flow source areas reveal that granite is exposed on slope surfaces, while a thin layer of sandy, weathered residual soil is distributed at the slope tops. This paper focuses on the significant permeability differences between the slope base and the upper weathered soil layer. A full-scale slope model experiment was conducted to replicate these characteristics, including rainfall infiltration simulations under both exposed surface conditions and conditions with non-woven fabric filter mats applied. The aim was to investigate the failure mechanism of rainfall-induced debris flows. The results show that the primary trigger for debris flows is the …

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Detection Method Of Rural Road Pavement Damage Based On Smart Phone, Zhang Yang, He Li, Tang Qingzhou, Zhang Dejin May 2023

Detection Method Of Rural Road Pavement Damage Based On Smart Phone, Zhang Yang, He Li, Tang Qingzhou, Zhang Dejin

Journal of China & Foreign Highway

Automatic detection of rural road pavement damage is a critical prerequisite for scientific maintenance. To address issues such as high false detection rates, missed detection, and the inability to quantify damage when using smartphones for pavement damage detection, this paper proposes a novel detection method. The proposed method involves using a smartphone to capture pavement images. A region of interest is first selected in the image, followed by weighted least-squares filtering, Canny edge detection, and Hough transform line detection to identify the pavement, minimizing environmental interference and reducing false detection rates. Perspective transformation is then applied to the pavement region …

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Research On Road Crack Recognition Model Based On Yolo V3 Deep Learning Algorithm, Su Weiguo, Wang Jingxiao May 2023

Research On Road Crack Recognition Model Based On Yolo V3 Deep Learning Algorithm, Su Weiguo, Wang Jingxiao

Journal of China & Foreign Highway

To address the challenges of manual intervention in road crack detection and the inaccuracy of traditional recognition algorithms, this paper proposes a road crack recognition method based on the YOLO v3 deep learning algorithm. The dataset images were first resized to 416×416 pixels. Labelme was then used to annotate cracks in the images and convert the boundary box location information. Finally, the YOLO v3 algorithm framework was employed for model training. The results show that the YOLO v3 algorithm achieves precision, recall, and F1 scores above 95%, with an image detection speed of 0.123 seconds per image. The YOLO v3 …

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Comparative Analysis Of Asphalt Pavement Performance Prediction Models Based On Gamma And Markov Processes, Ma Shibin, Chen Yonghao May 2023

Comparative Analysis Of Asphalt Pavement Performance Prediction Models Based On Gamma And Markov Processes, Ma Shibin, Chen Yonghao

Journal of China & Foreign Highway

Pavement performance prediction is a critical component of pavement management systems, serving as an essential basis and prerequisite for decision-making in asphalt pavement maintenance. This paper introduces the relevant theories of Gamma and Markov stochastic processes to construct asphalt pavement performance prediction models and address uncertainties related to pavement degradation. The results show that stochastic process models are effective in predicting pavement performance degradation and service life. Matlab programming was used to predict asphalt pavement performance and lifespan, yielding pavement degradation curves that significantly improve prediction accuracy and reliability. Finally, taking a test road section in Hebei Province as an …

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Study On Interlayer Bonding Properties And Influence Factors Of Cape Seal, Li Yan, Zhang Chengxue, Qiu Yeji, Zhang Haijun May 2023

Study On Interlayer Bonding Properties And Influence Factors Of Cape Seal, Li Yan, Zhang Chengxue, Qiu Yeji, Zhang Haijun

Journal of China & Foreign Highway

To address pavement issues such as shoving and rutting caused by insufficient bonding strength in cape seal layers, this paper investigates the interlayer bonding properties and influencing factors of cape seal. Mechanical tests were conducted using a pavement interlayer shear-pull testing device. Through interlayer pull-off, direct shear, and torsional shear tests, the maximum tensile force, shear force, and torque at failure were obtained. The interlayer bonding performance of cape seal was analyzed in terms of gravel coverage rates, as well as upper and lower layer combinations. The results show that when the gravel coverage rate is 80%-90%, and the cape …

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Analysis Of Socket Depth Between Bridge Pier And Cap With Improved Socket Connection, Ge Jiping, Lai Luqi, Wang Zhigang May 2023

Analysis Of Socket Depth Between Bridge Pier And Cap With Improved Socket Connection, Ge Jiping, Lai Luqi, Wang Zhigang

Journal of China & Foreign Highway

Traditional prefabricated socket-type bridge piers are limited in engineering applications due to the requirement for deep socket connections. This paper proposes an improved socket connection design incorporating measures such as side shear keys, U-shaped anti-punching reinforcement at the pier base, high-strength non-shrink grouting materials, and large-diameter corrugated metal pipe constraints. The current formulas for calculating socket depth in socket-type connections are reviewed, and a modified calculation formula for improved socket-type piers is presented. The influence of factors such as axial compression ratio and concrete strength on socket depth is discussed. The analysis shows that the improved socket connection reduces socket …

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Finite Element Model Updating Of Long Span Suspension Bridge Based On Optimized Radial Basis Function Neural Network, Yang Wenfu, Chen Xin May 2023

Finite Element Model Updating Of Long Span Suspension Bridge Based On Optimized Radial Basis Function Neural Network, Yang Wenfu, Chen Xin

Journal of China & Foreign Highway

To achieve accurate prediction and analysis of the structural behavior of long-span suspension bridges, a finite element model updating method is proposed. An optimized radial basis function neural network (RBFNN) is constructed using a genetic algorithm to map the relationship between structural responses and parameters. Using structural dynamic responses as inputs, the model updating was performed on a long-span suspension bridge using both numerical simulation data and actual data from a health monitoring system. The results show that the optimized RBFNN effectively represents the functional relationship between structural responses and parameters to be updated. Model updating via the optimized RBFNN …

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Study On Relationship Of Solar Radiation Temperature And Pier‐Top Displacement Of Ultra‐High Thin‐Walled Hollow Pier, Liu Zhishen, Zhang Yifei, Song Fei, Su Jufeng, Ren Xiang May 2023

Study On Relationship Of Solar Radiation Temperature And Pier‐Top Displacement Of Ultra‐High Thin‐Walled Hollow Pier, Liu Zhishen, Zhang Yifei, Song Fei, Su Jufeng, Ren Xiang

Journal of China & Foreign Highway

Thin-walled hollow piers are widely used in high-pier and long-span continuous rigid-frame bridges. Solar radiation-induced displacements at the tops of ultra-high thin-walled hollow piers can negatively affect the structural alignment and stress during construction and post-construction phases. Based on a 180 m high thin-walled hollow pier of a large bridge in Shaanxi Province, this paper analyzes the temperature field and pier-top displacement using data collected during two 24-hour periods: August 28-29 and October 11-12. The temperature field and pier-top displacement patterns over time were studied using finite element analysis. The results show that the temperature difference between the north and …

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Fracture Mechanics‐Based Fatigue Study Of Corrugated Steel Webs, Li Haidi, Yang Lei May 2023

Fracture Mechanics‐Based Fatigue Study Of Corrugated Steel Webs, Li Haidi, Yang Lei

Journal of China & Foreign Highway

To develop fatigue analysis and evaluation methods for corrugated steel web structures, constant-amplitude fatigue load tests were conducted on experimental beam models, supplemented by fatigue test data from domestic and international studies. The finite element submodeling method was employed to obtain stress distribution functions at structural details, and the weight function method was used to derive the stress intensity factor at the crack tip. The Paris law in fracture mechanics was applied to derive the S-N curve for corrugated steel web structures. Comparative analysis with fatigue test results shows that when the initial crack depth is set as a0=t/20 (accounting …

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Discussion On Formula Of Off‐Load Increase Coefficient Of Single‐Box Multi‐Cell Wide Girder, Gao Qingfei, Wang Renzhi, Li Jun, Guo Binqiang, Qin Weijun May 2023

Discussion On Formula Of Off‐Load Increase Coefficient Of Single‐Box Multi‐Cell Wide Girder, Gao Qingfei, Wang Renzhi, Li Jun, Guo Binqiang, Qin Weijun

Journal of China & Foreign Highway

Single-box multi-cell wide girders are widely applied in highway and urban bridges due to their excellent integrity and large width, especially with increasing traffic volumes. However, existing methods for calculating the off-load increase coefficient of single-box multi-cell wide girders are either too complex or fail to meet engineering needs, limiting their applicability in preliminary design. This paper explores eight influencing factors of the off-load increase coefficient, calculates the coefficients using the transverse frame method, and proposes an empirical formula for the off-load increase coefficient. The proposed formula is validated using the Xiushui Street Wide Girder Bridge in Jilin City.

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Research On Multi‐Source And Heterogeneous Data Integration Of Large Bridge Health Monitoring System, Wang Daijun, Zhou Tiantu, Fu Junmin, Chen Xing, Lu Shuai, Yu Zheng May 2023

Research On Multi‐Source And Heterogeneous Data Integration Of Large Bridge Health Monitoring System, Wang Daijun, Zhou Tiantu, Fu Junmin, Chen Xing, Lu Shuai, Yu Zheng

Journal of China & Foreign Highway

Large bridge health monitoring systems are characterized by numerous sensors, diverse types, various communication methods, and flexible network configurations. The multi-source heterogeneous nature of the data poses significant challenges for data integration. To address the application requirements of bridge health monitoring, this paper designs a multi-source heterogeneous data integration scheme. The scheme achieves structured storage of multi-source heterogeneous data and introduces the concept of “structured communication.” This enables structured communication configuration, unified communication control, and flexible data processing, standardizing and simplifying communication configuration management in data acquisition systems. These improvements enhance code simplicity, maintainability, and the overall integration level of …

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Selection And Design Of Anchorage For Suspension Bridge In Downhill Area Under Complex Geological Conditions, Chen Yongliang, He Shiyong, Xia Zhixian, Wu Wenxiang May 2023

Selection And Design Of Anchorage For Suspension Bridge In Downhill Area Under Complex Geological Conditions, Chen Yongliang, He Shiyong, Xia Zhixian, Wu Wenxiang

Journal of China & Foreign Highway

Due to the complexities of design and construction, long-span single-tower suspension bridges are rarely applied in practice. The main bridge of the Jinsha River Bridge at Tiger Leaping Gorge adopts a 766 m single-span single-tower steel truss suspension bridge. On the Lijiang anchorage side, complex geological conditions posed significant challenges due to geological structures, while the reservoir level of the planned hydropower station created adverse hydrological conditions for waterproofing and durability of the anchorage system. The selection of an appropriate anchorage type was therefore particularly challenging. This paper first details the selection process for anchorage under complex geological conditions. It …

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