Advances in Civil Engineering最新文献_第2页

Low-Cost Portable Road Smoothness Testing Method Based on Pseudo-Vibration Velocity Range 基于伪振动速度范围的低成本便携式道路平整度测试方法

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-27 DOI: 10.1155/2024/6314144

Hongwei Jiang, Xinlong Tong, Yanhong Zhang, Zhoujing Ye, Junqing Li, Yu Wang, Yinghao Miao

{"title":"Low-Cost Portable Road Smoothness Testing Method Based on Pseudo-Vibration Velocity Range","authors":"Hongwei Jiang, Xinlong Tong, Yanhong Zhang, Zhoujing Ye, Junqing Li, Yu Wang, Yinghao Miao","doi":"10.1155/2024/6314144","DOIUrl":"https://doi.org/10.1155/2024/6314144","url":null,"abstract":"Road smoothness not only directly affects the safety and comfort of vehicle travel but also relates to the efficiency and cost-effectiveness of road maintenance. Traditional road smoothness detection methods usually require professional equipment and personnel, leading to high costs and cumbersome operations. Therefore, finding a low-cost, simple, and accurate method for detecting road smoothness is of great significance. This study uses vehicle-mounted acceleration sensors to detect road smoothness, establishing a correlation between driving vibration acceleration data and the international roughness index (IRI). For this research, a driving vibration acceleration data acquisition device was developed, and the driving acceleration data from the test sections were denoised and their feature values extracted. The pseudo-vibration velocity range was used as the characteristic index representing the road surface smoothness IRI value. Testing with different vehicle types showed that the method is applicable to both sedans and SUV models, yielding a relative error of 8.9% for the sedan smoothness test model and 6.7% for the SUV smoothness test model. This study contributes to conducting large-scale road smoothness detection at a low cost, improving the efficiency of road maintenance and operations.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170048","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

Research on Intelligent Detection and Segmentation of Rock Joints Based on Deep Learning 基于深度学习的岩石节理智能检测与分割研究

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-20 DOI: 10.1155/2024/8810092

Lei Peng, Haibo Wang, Chun Zhou, Feng Hu, Xiaoyang Tian, Hongtai Zhu

{"title":"Research on Intelligent Detection and Segmentation of Rock Joints Based on Deep Learning","authors":"Lei Peng, Haibo Wang, Chun Zhou, Feng Hu, Xiaoyang Tian, Hongtai Zhu","doi":"10.1155/2024/8810092","DOIUrl":"https://doi.org/10.1155/2024/8810092","url":null,"abstract":"The current methods for detecting joints on tunnel face rely primarily on manual sketches, which are associated with issues of low detection efficiency and subjectivity. To address these concerns, this paper presents an intelligent recognition and segmentation algorithm based on Mask R-CNN (mask region-based convolutional neural network) for detecting joint targets on tunnel face images and automatically segmenting them, thereby improving detection efficiency and objectivity of the results. Additionally, to tackle the challenge of low detection accuracy in existing image processing methods, particularly for complex tunnel joint surfaces in dark environments, the paper introduces a path aggregation network (PANet) to enhance the fusion capability of feature information in Mask R-CNN, thereby improving the accuracy of the intelligent detection method. The algorithm was trained on a dataset of 800 tunnel face images, and the research findings demonstrate that it can quickly detect the position of joints on tunnel face images and assign masks to the joint pixel regions to achieve joint segmentation. The mean average precision (mAP) of the detection boxes and segmentation in the 80 test set images were 58.0% and 49.2%, respectively, which outperforms the original Mask R-CNN algorithm and other intelligent recognition and segmentation algorithms.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141120031","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

Experimental Investigation of Ductility in GFRP RC Beams by Confining the Compression Zone 通过限制压缩区实现 GFRP RC 梁延展性的实验研究

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-18 DOI: 10.1155/2024/4268615

Erfan Tahrirchi, Farshid J. Alaee, Meysam Jalali

{"title":"Experimental Investigation of Ductility in GFRP RC Beams by Confining the Compression Zone","authors":"Erfan Tahrirchi, Farshid J. Alaee, Meysam Jalali","doi":"10.1155/2024/4268615","DOIUrl":"https://doi.org/10.1155/2024/4268615","url":null,"abstract":"Nowadays, building structures in corrosive environments requires some considerations. Being lightweight, high tensile strength, and corrosion resistance are the features that make fiber-reinforced plastic (FRP) bars an alternative component for longitudinal steel reinforcement of concrete. On the other hand, the linear elastic behavior of FRP bars, alongside the brittle behavior of concrete, makes brittle members without considerable ductility. In this paper, the effect of compression region confinement with CFRP sheets on the FRP-reinforced concrete beams was experimentally investigated. Eight GFRP reinforced beams with 2 m length, including one reference beam and seven confined beams, were constructed and tested under a four-point bending test. Based on the type of confinement, specimens are categorized into four groups. Flexural behavior improvements, including load carry capacity, energy dissipation capacity, and ductility, were observed in at least one specimen of each confined group. According to the results, the specimen that was spirally confined with a 30 mm ribbon width and angle of 10° had the best total energy absorption up to about 110% improvement in comparison to the unconfined specimen. On the other hand, vertically confined specimens with 50 mm ribbon width showed the highest improvement in ductility indices and load carrying capacity up to 60% and 11% in comparison to unconfined specimens, respectively. Due to concrete compression zone fractures in flexural failure mode, the over-reinforce method is considered the design philosophy. Results indicate that regardless of the confinement type (discrete vertical, discrete spiral, or continuous spiral confinement), there is an optimal amount for width, blank space between ribbons, and depth of confinement to achieve the best flexural behavior.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141061470","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

Experimental Investigation on Shear Strength and Microstructure of Chemically Treated Sisal Fiber-Reinforced Concrete 化学处理剑麻纤维加固混凝土的剪切强度和微观结构实验研究

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-17 DOI: 10.1155/2024/4830026

Abadi Haftu Kahsay, Belachew Asteray Demiss

{"title":"Experimental Investigation on Shear Strength and Microstructure of Chemically Treated Sisal Fiber-Reinforced Concrete","authors":"Abadi Haftu Kahsay, Belachew Asteray Demiss","doi":"10.1155/2024/4830026","DOIUrl":"https://doi.org/10.1155/2024/4830026","url":null,"abstract":"The incorporation of sisal fiber into the concrete matrix reduces waste disposal, which has negative environmental impacts. The aim of this study was to perform an experimental investigation on shear strength and microstructure of chemically treated sisal fiber-reinforced concrete (SFRC). In order to accomplish the aim of the study, physical, shear, and mechanical properties of concrete reinforced with chemically treated sisal fiber have been performed. 0.50%, 1.00%, 1.25%, 1.50%, 1.75%, and 2.00% of sodium hydroxide (NaOH) and sulfuric acid (H2SO4) treated sisal fiber were used as an addition to the dry weight average with the help of the American Concrete Institute (ACI) mix design procedure. After the 7th and 28th days of curing, shear strength according to the ASTM D5379M standard and the mechanical properties of concrete have been conducted. For microstructural properties, scanning electron microscopy (SEM) and X-ray diffraction (XRD) were conducted after the concrete was cured for 28 days. Forty-six percent and 20% compressive strength enhancement at the 7th and 28th days of curing was compared to the control mix. Twenty-seven percent enhancement was recorded in the split tensile strength of 1.5% SFRC as compared to the control mix at 28 curing days. A shear strength of 1.5% SFRC was improved by 95% at the 7th curing days and 28% at the 28th curing days as compared to the control mix. As compared to conventional concrete, SFRC shows a denser microstructure. In addition to this, portlandite, quartz, calcium aluminum silicate, and C─S─H crystal are the available phases in the concrete matrix.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140964393","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

Newly Constructed Subway on Over-Track Bridge Safety and Vibration Reduction Measure 轨道桥上新建地铁的安全和减震措施

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-16 DOI: 10.1155/2024/5851849

Yuan Xu, Hui Li, Jue Hou, Liming Zhu, Lingkun Chen

{"title":"Newly Constructed Subway on Over-Track Bridge Safety and Vibration Reduction Measure","authors":"Yuan Xu, Hui Li, Jue Hou, Liming Zhu, Lingkun Chen","doi":"10.1155/2024/5851849","DOIUrl":"https://doi.org/10.1155/2024/5851849","url":null,"abstract":"Primarily generated at the interface between the wheel and the rail, railroad vibrations then propagate through the supporting soil. If these vibrations reach nearby bridges and buildings, they amplify the vibration nuisance and cause ground noise, which has detrimental effects on nearby residents, sensitive equipment, and historic structures. By analyzing measured data from metro vibration field vibration experiments, this article attempts to contribute to the body of knowledge on environmental vibration propagation patterns by offering insightful conclusions. Before analyzing the deformation response of the metro jet system (MJS) vibration isolation piles to the structure and the ground, we investigated the effect of MJS vibration isolation piles in the ground of the existing subway tunnel structure on the control of vibration of the proximate structure and conducted dynamic tests on the vibration of bridges without vibration isolation measures caused by operating subway trains. The tests determined that the acceleration of the bridge’s lateral vibration exceeded the code limit; one of the contributing factors was that the bridge’s structure had already sustained damage. The utilization of MJS isolation piles was also discovered to safeguard the extant bridge pile foundations. The paper presents an innovation in the form of economically viable vibration mitigation strategies that were implemented subsequent to the identification that the lateral vibration acceleration of the preexisting bridge surpassed the prescribed code standards. Considerable insight is gained regarding the design and implementation of vibration control systems for structures situated near caverns, encompassing deep foundation works.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140969266","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

Water Sensitivity and Structural Properties of Loess 黄土对水的敏感性和结构特性

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-15 DOI: 10.1155/2024/1951668

Longfei Zhang, Zaiqiang Hu, Hongru Li, Haicheng She, Xiaoliang Wang, Xi Yang, Xiaoning Han

引用次数: 0

Investigation of Engineering Properties and Solidification Mechanism of Loess by Sodium Silicate Alkali-Activated Coal Gangue Powder 硅酸钠碱激活煤矸石粉对黄土工程性质和凝固机理的研究

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-15 DOI: 10.1155/2024/7718335

Yang Yang, Shengsheng Yu, Xiao Ma, Aiping Hu, Ping Li

{"title":"Investigation of Engineering Properties and Solidification Mechanism of Loess by Sodium Silicate Alkali-Activated Coal Gangue Powder","authors":"Yang Yang, Shengsheng Yu, Xiao Ma, Aiping Hu, Ping Li","doi":"10.1155/2024/7718335","DOIUrl":"https://doi.org/10.1155/2024/7718335","url":null,"abstract":"The aim of this study is to investigate the engineering properties and solidification mechanism of loess through the use of alkali-activated coal gangue powder with sodium silicate. Experimental methods and comprehensive analysis were employed to examine the effects of different proportions of alkali-activated coal gangue powder with sodium silicate on the engineering properties of loess, including mass shrinkage, compressibility, and shear strength. Additionally, scanning electron microscopy was utilized to gain in-depth insights into the interaction and solidification mechanism between loess and alkali-activated coal gangue powder. The results show that the sodium silicate alkali-activated gangue powder curing loess has significantly improved the compressive strength and shear strength of the loess. With a ratio of 7 : 2 : 1, the 28 days compressive strength of solidified loess is 1.7 MPa, and the shear strength is 67.92 kPa, which is 1.91 and 2.13 times the 28 days compressive strength and shear strength of unmixed gangue powder and sodium silicate specimens respectively. The hydration–hydrolysis reaction, ion-exchange reaction, and volcanic ash reaction of the gangue powder under an alkaline environment generated hydrides that filled the pores between soil particles, enhanced the interparticle cohesion, and made the internal structure of the specimens denser, improving the engineering performance of loess solidification. The proposed sodium silicate alkali-activated gangue powder curing loess mechanism can provide a theoretical reference for the engineering application of gangue powder and the curing modification of loess.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140973540","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

Harbor Sedimentation Management Using Numerical Modeling and Exploratory Data Analysis 利用数值建模和探索性数据分析进行港口沉积管理

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-15 DOI: 10.1155/2024/1209460

Mohamed T. Elnabwy, Emad Elbeltagi, Mahmoud M. El Banna, Abdullah H. Alshahri, Jong-Wan Hu, Byoung Gil Choi, Yong Hee Kwon, M. Kaloop

{"title":"Harbor Sedimentation Management Using Numerical Modeling and Exploratory Data Analysis","authors":"Mohamed T. Elnabwy, Emad Elbeltagi, Mahmoud M. El Banna, Abdullah H. Alshahri, Jong-Wan Hu, Byoung Gil Choi, Yong Hee Kwon, M. Kaloop","doi":"10.1155/2024/1209460","DOIUrl":"https://doi.org/10.1155/2024/1209460","url":null,"abstract":"Sedimentation in the harbors’ basins is an environmental phenomenon that frequently disrupts safe shipping and necessitates costly dredging operations. The layout of harbors and the permeability of protective structures such as breakwaters influence sediment transport within harbor basins. Thus, through a multistep framework, this study investigates the sedimentation management issues for the Egyptian proposed Ezbet Elborg fishing harbor based on field measurements and a numerical morphodynamic coastal modeling system (CMS). First, field measurements were analyzed and evaluated for acquiring a full grasp of the research area’s bathymetry and hydrodynamics. Second, a two-dimensional (2D) numerical simulation CMS model was set up and calibrated against field measurements wherein the developed CMS model highly correlated with actual measurements by 97%. CMS results demonstrate that the predominant NNW wave with the formed longshore current on both the harbor’s sides affects sediment accumulation within the harbor’s basin. Third, 100 simulations for the proposed harbor including different structural modulation scenarios affecting the sedimentation issue were investigated via the calibrated CMS model. Finally, an exploratory data analysis (EDA) is performed via correlation matrix and ANOVA test for the CMS’s scenarios’ results to gain an in-depth view of the relation between the harbors’ layout and the structural characteristics with the sedimentation volumes. Results showed that breakwaters’ orientation affects sediment accumulation more than its length. Also, breakwater permeability and basin width are significantly affecting sediment accumulation. Ultimately, the current study makes a substantial contribution to integrated coastal structure management (ICSM) by helping coastal stakeholders to mitigate the negative impacts of the harbors’ sediment deposition aiming at sustaining both environmental and economic aspects.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140975550","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

Thermal Performance Assessment of Concrete Walls Using Different Phase Change Materials 使用不同相变材料的混凝土墙体热性能评估

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-14 DOI: 10.1155/2024/2994221

Muhammad Usman, Mahmood Hussain, Arslan Mushtaq, Syed H. Farooq, Atif Mehmood, Asad Hanif

{"title":"Thermal Performance Assessment of Concrete Walls Using Different Phase Change Materials","authors":"Muhammad Usman, Mahmood Hussain, Arslan Mushtaq, Syed H. Farooq, Atif Mehmood, Asad Hanif","doi":"10.1155/2024/2994221","DOIUrl":"https://doi.org/10.1155/2024/2994221","url":null,"abstract":"Energy demand is continuously increasing around the globe, and the building sector contributes 40% of the total energy consumption, as per the studies. Fossil fuels are the primary cause of harmful gas emissions, thus causing environmental pollution. There is a dire need to introduce innovative techniques to fulfill energy demands while reducing environmental pollution. Phase change materials (PCMs) are the latent thermal storage materials that store thermal energy during phase change from solid to liquid state and vice versa. Thus, using PCMs in structural engineering offers one of the best options for rapidly developing energy-saving materials. To do so, ascaled model, concrete walls room, encapsulating locally available PCMs, was constructed in this study. Three locally available PCMs (glycerin, vegetable ghee, and ferric chloride hexahydrate) have been tested in a controlled environment. The model response is then evaluated for the energy-storing capacity of each PCM while considering the human comfort zone. From the test results, it is concluded that PCMs have a significant effect on improving the thermal energy efficiency of the model without any notable adverse effects. Over the completion of the test, after 12 hr, all the incorporated PCM showed positive results, and a maximum temperature loss of 2.25 K was observed. Among different PCMs, the optimal performance was observed for vegetable ghee, which showed a drop in temperature for all the points at the inner side of the wall, i.e., T3, T4, and T5.","PeriodicalId":7242,"journal":{"name":"Advances in Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140931888","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 Numerical Study on the Influence of Bolt Corrosion on the Long-Term Behavior of Steel–Concrete Composite Beams 螺栓腐蚀对钢-混凝土复合梁长期行为影响的数值研究

IF 1.8 4区工程技术

Advances in Civil Engineering Pub Date : 2024-05-13 DOI: 10.1155/2024/2980358

Yalei Niu, Chen Qu, Qingxing Feng

引用次数: 0