KSCE Journal of Civil Engineering最新文献_第8页

Mechanical Behavior of Composite Shell Lining Structures Based on Cohesion Models 基于内聚力模型的复合材料壳衬结构的力学行为

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-08-03 DOI: 10.1007/s12205-024-0470-4

Xianda Feng, Yingrui Lu, Bin Lu, Chao Yuan, Shuchen Li

{"title":"Mechanical Behavior of Composite Shell Lining Structures Based on Cohesion Models","authors":"Xianda Feng, Yingrui Lu, Bin Lu, Chao Yuan, Shuchen Li","doi":"10.1007/s12205-024-0470-4","DOIUrl":"https://doi.org/10.1007/s12205-024-0470-4","url":null,"abstract":"With the development of tunnel construction, the number of composite-lined tunnels with spray membrane waterproofing is gradually increasing. To clarify the mechanical properties of composite shell lining (CSL) structures, mechanical parameters of interlayer waterproofing membrane materials were determined by conducting uniaxial tensile, interlayer bond tensile, and interlayer bond shear tests on waterproofing membrane materials with different water-cement ratios. The cohesion model is used to simulate the bonding characteristics between waterproofing membranes and concrete to develop numerical simulation calculation models of CSL and double shell lining (DSL) structures. The results of indoor tests and numerical simulations confirmed the feasibility of using a cohesion model to characterize the interlayer shear mechanical properties of the waterproofing membrane. Relative to the DSL, the stresses of the primary support of CSL and key cross-sections of the secondary lining are more similar owing to the synergistic force between the primary support and secondary lining caused by the bonding characteristics of the waterproofing membrane, resulting in the formation of a type of composite load-bearing structure, which improves the utilization rate of the primary support and reduces the thickness of the secondary lining. Therefore, the CSL structure based on spray membrane waterproofing has broad application prospects.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"216 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Crowd Load Model for Structural Vibration Evaluation of Building Cover in a Large-Span Railway Station 用于大跨度火车站建筑盖板结构振动评估的人群荷载模型

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-08-03 DOI: 10.1007/s12205-024-2520-3

Huiqi Liang, Tianhao Huo, Wenbo Xie, Qiang Hong, Zhiqiang Zhang, Peizi Wei, Yijing Lu

{"title":"A Crowd Load Model for Structural Vibration Evaluation of Building Cover in a Large-Span Railway Station","authors":"Huiqi Liang, Tianhao Huo, Wenbo Xie, Qiang Hong, Zhiqiang Zhang, Peizi Wei, Yijing Lu","doi":"10.1007/s12205-024-2520-3","DOIUrl":"https://doi.org/10.1007/s12205-024-2520-3","url":null,"abstract":"With the application of large-span building covers in high-speed railway stations, the issue of structural vibration comfort induced by crowd walking has aroused the attention of researchers. The randomness of the crowd flow on large-span building covers, combined with the conventional method adopting the worst load case to evaluate the human-induced structural vibration, leads to larger response results and a significant deviation from the actual scenario. In this study, a novel crowd-load model considering the inherent dual randomness associated with the trajectory of the crowd and walking load is proposed. It is developed by integrating the social force model with a random single person walking load. In addition, a corresponding framework for structural vibration calculation is proposed as well. Three crowd-loading models are established, accounting for randomness, by combining with the finite element model of the thin plate structure. The vibration response of the floor slab under crowd excitation was assessed in the waiting hall of Xiong'an high-speed railway station. Numerical simulation calculations were performed, comparing the results for three different types of crowd load. The findings indicate a significant reduction in the vibration response of the large-span waiting hall when employing the load model incorporating the social force model. This serves as a correction to the overly conservative nature of the conventional load model.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"16 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical and Experimental Validation for Calculating Permeation Diffusion Radius in Soil-Rock Mixtures 计算土壤-岩石混合物渗透扩散半径的理论与实验验证

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-08-03 DOI: 10.1007/s12205-024-0009-8

Zuliang Zhong, Jiayong Li, Congying Bie

{"title":"Theoretical and Experimental Validation for Calculating Permeation Diffusion Radius in Soil-Rock Mixtures","authors":"Zuliang Zhong, Jiayong Li, Congying Bie","doi":"10.1007/s12205-024-0009-8","DOIUrl":"https://doi.org/10.1007/s12205-024-0009-8","url":null,"abstract":"Due to the considerable variation in the range of rock content of the soil—rock mixture, when grouting experiments were conducted according to the existing grouting theory, it was found that a large number of pores not entirely filled by the slurry existed in the concretions of the medium to high rock content backfill area. Therefore, the existing slurry permeation grouting diffusion equation was optimized by adding the filling factor (γ). Based on the Bingham fluid rheological equation and the Newtonian fluid rheological equation, the optimized calculation equations for Bingham fluid and Newtonian fluid permeation diffusion considering the filling factor (γ) were derived. Furthermore, the indoor grouting experiment data are compared and analyzed with the calculation results of the original formula and the optimized formula. The results show that when ignoring the unfilled pores, the original formula calculating the diffusion radius will be small; the calculation results of the optimized formula considering the filling factor (γ) are closer to the actual experiment results. Moreover, based on the calculation results of the optimized formula, the order of influencing factors of the permeation diffusion radius is rock content > void ratio > water—cement ratio > grouting pressure.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"41 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel A + Q Method for Improving Conventional Lowest Bid Contractor Selection Based on Post-performance Records 基于履约后记录改进传统最低价承包商选择的新型 A + Q 方法

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-07-30 DOI: 10.1007/s12205-024-0885-y

Wen-Der Yu, Zhi-Lei Wang, Hsien-Kuan Chang, Tao-Ming Cheng

引用次数: 0

Durability of Modified Asphalt-Based Grouting Material for Post-Tensioned Concrete Structures 用于后张混凝土结构的改性沥青基灌浆材料的耐久性

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-07-25 DOI: 10.1007/s12205-024-0308-0

Eryu Zhu, Honghe Jian, Yongzheng Zhou, Weibing Pan

{"title":"Durability of Modified Asphalt-Based Grouting Material for Post-Tensioned Concrete Structures","authors":"Eryu Zhu, Honghe Jian, Yongzheng Zhou, Weibing Pan","doi":"10.1007/s12205-024-0308-0","DOIUrl":"https://doi.org/10.1007/s12205-024-0308-0","url":null,"abstract":"This work proposes that a non-bleeding modified asphalt-based grouting material (AG) can be used to improve the durability performance of prestressed tendon (PT) in post-tensioned concrete structures (PTCS). Therefore, durable and mechanical properties of PTs are tested and compared to PTs coated by AG, AH70 matrix asphalt (AH), epoxy resin (ER), respectively. The combined effect of different coatings on diffusion coefficient, strength and ductility are highlighted. Results showed that AG recorded higher enhancing impermeability than ER and exceeded by 1–2 orders of magnitude compared with traditional CG. Compared with the PS and AH, ER and AG can slightly improved the strength of the strands and significantly enhance the ductility by 50% or more. A corrosion constitutive model for different coated strands is proposed, which features excellent applicability and accuracy. Finally, based on the linear weighted sum optimization method, the protective effect of AG has been discussed and validated. Satisfactory responses have been found AG is effective in enhancing the durability of prestressed strands.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"43 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measuring Infiltration Rates in Permeable Asphalt Pavement in Urban Landscapes 测量城市景观中可渗透沥青路面的渗透率

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-07-23 DOI: 10.1007/s12205-024-0014-y

Dansani Vasanthan Muttuvelu, Simon Wyke, Jes Vollertsen

{"title":"Measuring Infiltration Rates in Permeable Asphalt Pavement in Urban Landscapes","authors":"Dansani Vasanthan Muttuvelu, Simon Wyke, Jes Vollertsen","doi":"10.1007/s12205-024-0014-y","DOIUrl":"https://doi.org/10.1007/s12205-024-0014-y","url":null,"abstract":"Efficient water management of roads has become increasingly important due to the escalating challenges posed by climate change. The existing body of research focusing on permeable pavements with surface layers of asphalts, concrete, and interlocking pavers, is limited, especially with respect to the use of porous asphalt as a surface layer is. Addressing the challenges and opportunities associated with permeable asphalt pavements, such as cleaning practices and maintaining infiltration efficiency is, nonetheless, essential to improve and advance urban engineering practices. This research, therefore, explores the intricate relationship between porous asphalt pavements and the dynamic behavior of infiltration rates over time. Utilizing both quantitative and qualitative data, the study revealed a variability in infiltration rates along the tested roads, affected by variables such as, pavement porosity and surface condition resulting from variation in the pavement construction process and practice.. The study, additionally, show that continuous cleaning and maintenance have a positive effect on the infiltration capability of permeable asphalt pavements, rendering surface cleaning essential, to maintain a high infiltration performance of permeable asphalt pavements.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"21 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Performance Research of a New Type of Spherical Force-Measuring Bearing of Bridges Based on Button Type Microsensor 基于按钮式微型传感器的新型桥梁球形测力支座的设计与性能研究

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-07-23 DOI: 10.1007/s12205-024-2646-3

Nianchun Deng, Menglong He, Nanrong Gu, Hongjie Liang

{"title":"Design and Performance Research of a New Type of Spherical Force-Measuring Bearing of Bridges Based on Button Type Microsensor","authors":"Nianchun Deng, Menglong He, Nanrong Gu, Hongjie Liang","doi":"10.1007/s12205-024-2646-3","DOIUrl":"https://doi.org/10.1007/s12205-024-2646-3","url":null,"abstract":"To realize the real-time monitoring and evaluation of the bearing state such as force and deformation, and to meet the intelligent development needs of “self-sensing and self-evaluation” of engineering structures, this paper carried out a finite element simulation of the mechanical properties of spherical bearings and developed a new type of spherical force-measuring bearing based on the button type microsensors through the integration of structural monitoring technology. The simulation results show that the von Mises stress of the spherical bearing is mainly concentrated in the annular region where the edge of the spherical crown is located, and the magnitude of the force value decreases from the edge to the center gradually. The performance characteristics of spherical force-measuring bearings based on the button-type microsensor were studied by combining finite element simulation and experiments. The research results show that the sensitivity of this type of sensor is stable, and the growth trend of the measurement data is ideal with small dispersion, which is in line with the distribution law of the bearing internal force. The temperature loading test was carried out to study the effect of temperature on the bearing measurement accuracy. The fixed force value obtains the relationship between strain and temperature, and the minimum value method is proposed to calculate the temperature compensation coefficient and temperature compensation equation by fitting the slope of a straight line to improve the measurement accuracy of the sensor. Therefore, the research results have good value for engineering applications.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"167 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Steel-Concrete Bond versus Primary Crack Opening in Reinforced Concrete Beams 钢筋混凝土梁中的钢-混凝土粘结力与原裂缝开度

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-07-23 DOI: 10.1007/s12205-024-1566-6

Jianming Wang, Jian Guo, Chunyu Fu

{"title":"Steel-Concrete Bond versus Primary Crack Opening in Reinforced Concrete Beams","authors":"Jianming Wang, Jian Guo, Chunyu Fu","doi":"10.1007/s12205-024-1566-6","DOIUrl":"https://doi.org/10.1007/s12205-024-1566-6","url":null,"abstract":"Bond deterioration between steel bars and concrete in reinforced-concrete beams mostly occurs close to the primary (i.e., bending induced) cracks. To investigate bond-cracking interaction, a novel bond-slip relationship is introduced in this study, where bond parameters are a function of crack-opening displacement. Such a displacement is in turn evaluated based on the highly variable strain profiles in the concrete, through an iterative procedure. The effectiveness of the proposed approach is validated against a set of tests on RC beams well-documented in the literature, which show a clear trend for the local bond stresses to decrease close to the primary cracks. The bond-slip relationships along the bar and the maximum bond stress depend on the applied loads and on the crack pattern, with a mutual interaction that affects both the crack-opening displacement and the bond stresses, causing a nonlinear increase in the steel strains. Nevertheless, the bond-slip relationships display descending branches characterized by remarkably similar slopes within a given region, irrespective of the loads. Consequently, if the descending branch for this region is known under a particular load, the branches under other loads can be obtained by horizontally translating the known branch. The proposed approach may provide a useful tool to describe bond behavior in RC members and to understand the complex interaction among the displacements due to crack opening, bond stresses and their structural effect.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"54 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Silt Content on Mechanical Behavior of River Gravel Material 淤泥含量对河道砾石材料力学行为的影响

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-07-23 DOI: 10.1007/s12205-024-1700-5

Lifeng Wen, Yijie Li, Yanlong Li, Ying Yang

{"title":"Effect of Silt Content on Mechanical Behavior of River Gravel Material","authors":"Lifeng Wen, Yijie Li, Yanlong Li, Ying Yang","doi":"10.1007/s12205-024-1700-5","DOIUrl":"https://doi.org/10.1007/s12205-024-1700-5","url":null,"abstract":"River gravel foundations are frequently encountered geological conditions during the construction of earth-rockfill dams. Despite pre-treatment, river gravel foundations inevitably contain some amount of silt, directly impacting their behavior. This paper conducts sixteen sets of large-scale triaxial experiment to study the influence of silt content on mechanical behavior of the river gravel material. The loess was used to simulate the silt. Triaxial experiments with four different silt contents (0%, 2%, 4%, 6%) and four different confining pressures were carried out. The results showed that the peak strength decreased with the increase of silt content. Under low confining pressure, the specimen initially exhibits contraction, followed by dilation. At high confining pressure, the specimen exhibit contraction. Due to the bonding and lubrication characteristic of silt, the cohesion c increased with the increase of silt content, and the internal friction angle φ decreases with the increase of silt content. The lubrication of silt reduced the specimen deformation resistance. The increase of silt content results in the decreases of the initial shear modulus E1, especially at the high confining pressure condition. As silt increases the dry density, the material’s the failure poisson ratio vif decreases, especially under low confining pressure conditions.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"245 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Grouting Quality Evaluation System for a Shield TBM Tunnel Using the Impact-Echo Method 使用冲击回波法开发盾构 TBM 隧道灌浆质量评估系统

IF 2.2 4区工程技术

KSCE Journal of Civil Engineering Pub Date : 2024-07-23 DOI: 10.1007/s12205-024-0128-2

Wonsuh Sung, Ki-Il Song, Kyoung-Yul Kim, Hee-Hwan Ryu

{"title":"Development of Grouting Quality Evaluation System for a Shield TBM Tunnel Using the Impact-Echo Method","authors":"Wonsuh Sung, Ki-Il Song, Kyoung-Yul Kim, Hee-Hwan Ryu","doi":"10.1007/s12205-024-0128-2","DOIUrl":"https://doi.org/10.1007/s12205-024-0128-2","url":null,"abstract":"Effective backfill grouting is crucial for the stability of Tunnel Boring Machine (TBM) tunnels. Insufficient grouting can lead to severe consequences, including groundwater seepage, surface settling, and cavity in the ground. This study introduces an innovative evaluation system using the impact-echo (IE) method to ensure the quality of backfill grouting behind segment linings. Through in-depth analysis of IE signals, three key indicators—Geometric Damping Ratio (GDR), Dominant Resonance Duration (DRD), and the number of post-peak amplitude Counts above 10% of the peak value after 1 millisecond (N10AMP)—have been identified, effectively capturing grouting quality in the near-surface zone. Despite the current limitations of solenoid hammers in terms of structural thickness applicability, our enhancements in the diversification of size, impact force, and contact time extend their utility, promising greater flexibility and precision in structural evaluations. This aligns with the evolving demands of modern tunnel engineering projects, ensuring compatibility and efficiency. The optimized automated IE approach was then applied to a real construction site segment, showcasing its superiority over conventional methods. Successfully deployed in two field locations, the system reliably assessed backfill grouting quality. This impact-echo system streamlines data acquisition with an automated solenoid, proving its field-ready capability. By ensuring proper backfill grouting, this novel IE system promotes safer, more efficient TBM tunnel construction with enhanced stability, safety, and reduced maintenance costs.","PeriodicalId":17897,"journal":{"name":"KSCE Journal of Civil Engineering","volume":"48 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0