Numerical simulation of intelligent compaction for subgrade construction

Ma, Yuan; Luan, Yingcheng; Zhang, Weiguang; Zhang, Yuqing

doi:10.1007/s11771-020-4439-2

Cited by 24 publications

(8 citation statements)

References 34 publications

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“…The designed sensing equipment is worn on the assessors, and the assessors are brought into the virtual basketball game through the sensing drive [10]; using the ability of the sensor to capture information, the pose and action of the referee are photographed and collected, and the collected information is connected to the database for storage through the converter. The collected information is analyzed based on the quaternion pose solution method of the complementary filter and compared with the standard evaluation information by the comparator [11,12]. The interpreter is used to score the referee's actions and poses, and finally, the evaluation results are outputted through the output device.…”

Section: Design Of Basketball Referee Training Andmentioning

confidence: 99%

Intelligent System for Training and Assessment of Basketball Referee in Sports Event Using Intelligent Sensor

Wang

Ren

Yang

et al. 2021

Wireless Communications and Mobile Computing

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Aiming at the problem of the fairness of the judgment results in the traditional basketball referee training and evaluation process affected by external factors, an intelligent system for training and assessment of basketball referees in sports events based on intelligent sensors is proposed. We collect the judged poses of basketball referees by wearing intelligent sensor devices, store the collected information in the database using the converter, and analyze the pose data with the quaternion pose solution method based on complementary filters. According to the comparator, the analysis result is compared with the standard judgment information, and the action is judged whether the action conforms to the basketball judgment rules of the sports event. The judge’s action pose score is evaluated according to the judgment result, and the training assessment result is outputted. The results show that the system can clearly simulate the acceleration and pose angle data of the referee’s complex actions, the recognition rate of various basketball penalty poses is high, and the error of the pitch, yaw, and roll pose calculations is small. The response time of this system is 4 ms, when the number of requests sent by the client is 200 which is unanimously approved by the referees.

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Section: Design Of Basketball Referee Training Andmentioning

confidence: 99%

Intelligent System for Training and Assessment of Basketball Referee in Sports Event Using Intelligent Sensor

Wang

Ren

Yang

et al. 2021

Wireless Communications and Mobile Computing

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“…Given the situation that CMV cannot better reflect the compaction quality in some situations, Ma, Y. et al proposed an intelligent compaction quality evaluation index—accelerated intelligent compaction value (AICV) [ 15 ]. Ma, Y. et al verified the accuracy of the calculation results of intelligent subgrade soil compaction through numerical simulation [ 16 ]. Lin, D. obtained the relation between compaction degree, amplitude, and damping ratio of vibration wave through spectrum analysis of acceleration signal through drop-hammer testing [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Wave Propagation Characteristics and Compaction Status of Subgrade during Vibratory Compaction

Yao

Mao

et al. 2023

Sensors

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Vibratory compaction status has a significant influence on the construction quality of subgrade engineering. This study carried out field experiments to study the propagation characteristics of the vertical vibration wave in the soil field along the traveling direction of the vibratory roller. The propagation coefficients of the peak acceleration at different positions and compacting rounds are compared in both the time and frequency domains. The compaction status is estimated in the form of dynamic modulus of deformation (Evd) obtained by plate load tests. The experiment results show that the propagation coefficient of peak acceleration is affected by the traveling speed, excitation amplitude, and frequency of the vibratory roller, as well as the compacting rounds. An exponential relationship between the wave amplitudes of the fundamental mode and higher-order modes is revealed. The amplitude of the fundamental wave is maximum at the speed of 3 km/h, whereas the amplitudes of higher-order waves have a maximum of 1.5 km/h. The influences of compaction rounds on the average value of Evd are also investigated to provide a practical reference for engineering construction.

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“…In addition to the maintenance aspect, the practical implementation of "sustainable roads" is achieved through thorough, early-stage road excavation and pavement work. The compaction performed to secure the road bearing capacity not only ensures the durability of the asphalt or concrete road, but is also the determining process for road performance and quality, including the drivability of vehicles [11]. In general, the goal of compaction is 90% or more, which is calculated as the ratio of the dry unit weight on-site to the maximum dry unit weight.…”

Section: Introductionmentioning

confidence: 99%

Spectrum Index for Estimating Ground Water Content Using Hyperspectral Information

Lee¹,

Kim²,

Park

et al. 2022

Sustainability

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Quality control considerably affects road stability and operability and is directly linked to the underlying ground compaction. The degree of compaction is largely determined by water content, which is typically measured at the actual construction site. However, conventional methods for measuring water content do not capture entire construction sites efficiently. Therefore, this study aimed to apply remote sensing of hyperspectral information to efficiently measure the groundwater content of large areas. A water content prediction equation was developed through an indoor experiment. The experimental samples comprised 0–40% (10% increase) of fine contents added to standard sand. As high water content is not required in road construction, 0–15% (1% increase) of water content was added. The test results were normalized, the internal and external environments were controlled for precise results, and a wavelength–reflection curve was derived for each test case. Data variability analyses were performed, and the appropriate wavelength for water content reflection, as well as reflectance, was determined and converted into a spectrum index. Finally, various fitting models were applied to the corresponding spectrum index for water content prediction. Reliable results were obtained with the reflectance corresponding to a wavelength of 720 nm applied as the spectrum index.

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Numerical simulation of intelligent compaction for subgrade construction

Cited by 24 publications

References 34 publications

Intelligent System for Training and Assessment of Basketball Referee in Sports Event Using Intelligent Sensor

Intelligent System for Training and Assessment of Basketball Referee in Sports Event Using Intelligent Sensor

Wave Propagation Characteristics and Compaction Status of Subgrade during Vibratory Compaction

Spectrum Index for Estimating Ground Water Content Using Hyperspectral Information

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