Equivalent Method for Simulating Uplift Pressure in Dam Model Test

Chen, Jianye; Lin, Zhang; Cheng, Yuan; Yang, Bohan; Ding, Zelin

doi:10.1260/1369-4332.13.6.1063

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Furthermore, Ganji et al [14] used the fluid-solid coupling method to analyze the safety and stability of a gravity dam under uplift pressure. Chen et al [15] discussed different uplift pressure simulation methods, and the equivalent uplift pressure simulation method is feasible under complex situations. Fu et al [16] research the reason for the abnormal uplift pressure of the Huaguangtan dam using the orehole video tests and numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Anomaly Identification of Uplift Pressure Monitoring Data and Structural Diagnosis of Concrete Dam

Zhao

et al. 2022

Applied Sciences

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As an essential load of the concrete dam, the abnormal change of uplift pressure directly threatens the safety and stability of the concrete dam. Therefore, it is of great significance to accurately and efficiently excavate the hidden information of the uplift pressure monitoring data to clarify the safety state of the concrete dam. Therefore, in this paper, density-based spatial clustering of applications with noise (DBSCAN) method is used to intelligently identify the abnormal occurrence point and abnormal stable stage in the monitoring data. Then, an application method of measured uplift pressure is put forward to accurately reflect the spatial distribution and abnormal position of uplift pressure in the dam foundation. It is easy to calculate and connect with the finite element method through self-written software. Finally, the measured uplift pressure is applied to the finite element model of the concrete dam. By comparing the structural behavior of the concrete dam under the design and measured uplift pressure, the influence of abnormal uplift pressure on the safety state of the concrete dam is clarified, which can guide the project operation. Taking a 98.5 m concrete arch dam in western China as an example, the above analysis ideas and calculation methods have been verified. The abnormal identification method and uplift pressure applying method can provide ideas and tools for the structural diagnosis of a concrete dam.

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Section: Introductionmentioning

confidence: 99%

Intelligent Anomaly Identification of Uplift Pressure Monitoring Data and Structural Diagnosis of Concrete Dam

Zhao

et al. 2022

Applied Sciences

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“…Chen et al . [27] reported the equivalent loading method of uplift pressure of gravity dam using mechanical analysis, numerical simulation, and experimental investigation.…”

Section: Introductionmentioning

confidence: 99%

An equivalent method of jet impact loading from collapsing near-wall acoustic bubbles: A preliminary study

Lü

Chen

Dong

et al. 2021

Ultrasonics Sonochemistry

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Cavitation damage is a micro, high-speed, multi-phase complex phenomenon caused by the near-wall bubble group collapse. The current numerical simulation method of cavitation mainly focuses on the collapse impact of a single cavitation bubble. The large-scale simulation of the cavitation bubble group collapse is difficult to perform and has not been studied, to the best of our knowledge. In this study, the equivalent model of impact loading of acoustic bubble collapse micro-jets is proposed to study the cavitation erosion damage of materials. Based on the theory of the micro-jet and the water hammer effect of the liquid–solid impact, an equivalent model of impact loading of a single acoustic bubble collapse micro-jet is established under the principle of deformation equivalence. Since the acoustic bubbles can be considered uniformly distributed in a small enough area, an equivalent model of impact loading of multiple acoustic bubble collapse micro-jets in a micro-segment can be derived based on the equivalent results of impact loading of a single acoustic bubble collapse micro-jet. In fact, the equivalent methods of cavitation damage loading for single and multiple near-wall acoustic bubble collapse micro-jets are formed. The verification results show the law of cavitation deformation of concrete using equivalent loading is consistent with that of a micro-jet simulation, and the average relative errors and the mean square errors are insignificant. The equivalent method of impact loading proposed in this paper has high accuracy and can greatly improve the calculation efficiency, which provides technical support for numerical simulation of concrete cavitation.

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Anti-sliding stability of a gravity dam on complicated foundation with multiple structural planes

Cheng

Zhang

Yang

et al. 2012

International Journal of Rock Mechanics and Mining Sciences

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Equivalent Method for Simulating Uplift Pressure in Dam Model Test

Cited by 5 publications

References 9 publications

Intelligent Anomaly Identification of Uplift Pressure Monitoring Data and Structural Diagnosis of Concrete Dam

Intelligent Anomaly Identification of Uplift Pressure Monitoring Data and Structural Diagnosis of Concrete Dam

An equivalent method of jet impact loading from collapsing near-wall acoustic bubbles: A preliminary study

Anti-sliding stability of a gravity dam on complicated foundation with multiple structural planes

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