Binghan Xue

Zhengzhou University

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Hongyuan Fang

Yellow River Institute of Hydraulic Research

Jianglin Gao

Jiangxi Provincial Institute of Water Sciences

Jianguo Chen

Sun Yat-sen University

Jianwei Lei

Zhengzhou University

Kejie Zhai

Zhengzhou University

Chao Zhang

Zhengzhou University

Xiaohua Zhao

Zhengzhou University

Manjun Li

South Australia Pathology

Niannian Wang

Zhengzhou University

Liu Da

Chinese PLA General Hospital

Cooperative Institutions

Zhengzhou University

Yellow River Institute of Hydraulic Research

Henan Province Water Conservancy Survey and Design Research

Dalian University of Technology

Chinese Academy of Sciences

Jiangxi Provincial Institute of Water Sciences

Shanghai Jiao Tong University

Chongqing University

Nanchang University

Harbin Institute of Technology

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Coordination Characteristics Analysis of Deformation between Polymer Anti-Seepage Wall and Earth Dam under Traffic Load

Water (2022)

Hongyuan Fang Hong Zhang Binghan Xue Jianglin Gao Yan Li

Polymer anti-seepage walls have been widely used in the anti-seepage reinforcement projects of earth dams. Dam crest is always supposed to meet the requirements of traffic load which has significant influence on the dam body and anti-seepage wall. In order to analyze the coordination characteristics of the deformation between polymer anti-seepage wall and dam under traffic loads, a 3D finite element model of an earth dam that considers the coupling effect of seepage field and stress field was established. Besides, the influence of load amplitude, vehicle speed and driving position on the stress and deformation characteristics of polymer anti-seepage wall and dam was analyzed, with the displacement difference between dam and wall, wall Mises stress and wall subsidence as indicators. The results show that, compared with vehicle speed, the load amplitude and vehicle speed of traffic load exerted a greater impact on the coordination characteristics of the deformation of the dam. The variation range of the displacement difference caused by axial load change reached 87.1%, while that resulted from driving position change reached 90.3%. That is, when the passing vehicle has a light axle load and passes quickly over the anti-seepage wall, it has less impact on the dam.

10.3390/w14091442

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Citations (11)

Study on Working Behaviors and Improvement Strategies of Concrete Cutoff Wall with Slurry Cake in Thick Soil Foundation

International Journal of Geomechanics (2022)

Xiang Yu Yuke Wang Wang Gan Binghan Xue Xiaohua Zhao

Concrete cutoff walls are becoming more widely used to control foundation seepage for earth–rock dams built on a thick soil foundation because of the urgent demand for hydroelectric energy. As the lifeline impermeable structure, the safety of the concrete cutoff wall is of great importance and deserves increased attention. However, such walls have often been analyzed through linear-elastic modeling and simulated as a continuous structure. The working behavior of the discontinued concrete cutoff wall with slurry cake is still unclear. This paper presents a three-dimensional (3D) nonlinear finite-element numerical analysis of the concrete cutoff wall in a thick soil earth–rock dam foundation considering the effect of slurry cake. The results indicate that the damage degree and range in the concrete cutoff wall are significantly affected by wall discontinuity and slurry cake thickness. Moreover, the panel joints may open at the downstream side of the wall under the action of lateral water pressure, which will reduce the effective thickness. The joint opening and tensile damage degree decrease with a reduction in panel width, while the compression damage at the lower part of the wall becomes more serious. The thickness of slurry cake should be controlled reasonably because of its obvious effect on damage behavior of the wall. The working behavior of the concrete cutoff wall can be improved by arranging the width distribution of the panel reasonably and dealing with the problem of the slurry cake. This study can provide useful basis and suggestions for the design of a concrete cutoff wall with slurry cake between panels in thick soil foundations.

Foundation (evidence)

Cut-off

Discontinuity (linguistics)

10.1061/(asce)gm.1943-5622.0002388

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Study on the mechanical properties of polyurethane (PU) grouting material of different geometric sizes under uniaxial compression

Construction and Building Materials (2020)

Manjun Li Mingrui Du Fuming Wang Binghan Xue Chao Zhang

10.1016/j.conbuildmat.2020.119797

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Citations (83)

Cover Image, Volume 48, Issue 4

International Journal for Numerical and Analytical Methods in Geomechanics (2024)

Kejie Zhai Hongyuan Fang Niannian Wang Bin Li Jiaxiu Dong

Aims and

10.1002/nag.3715

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Citations (1)

Enhanced Reactive Red 2 anaerobic degradation through improving electron transfer efficiency by nano-Fe3O4 modified granular activated carbon

Renewable Energy (2021)

Hongyou Wan Fuzhen Wang Yu‐Han Chen Zisheng Zhao Guangyi Zhang

Methanosaeta

10.1016/j.renene.2021.07.046

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Citations (27)

Seepage Characteristics Analysis on Earth Dams Considering Polymer Cutoff Wall with Construction Defects

Sustainability (2022)

Yue Chen Binghan Xue Shu Zhang Xueming Du Mingsheng Shi

In recent years, non-water reaction polymer grouting is a new technology for anti-seepage and reinforcement that has been widely employed in anti-seepage projects. However, there is little research on the consequence of defective polymer cutoff walls affecting the seepage safety of earth dams. To analyze the influence of the number, location, and randomness of defects in the wall on seepage characteristics of the earth dam, a three-dimensional finite element model of a typical earth dam with the polymer cutoff wall is established by numerical simulation technology. The model reflects the real geometry of the polymer cutoff wall as well as the internal common construction defects—windows and uneven thickness. The results indicate that construction deficiencies, especially defect rate and thickness uniformity, have a negative effect on the actual anti-seepage performance of the polymer wall. Eventually, the seepage safety of the earth dam may be endangered due to overestimation of the actual impermeability, if only assuming the cutoff wall is intact. Therefore, the index reflecting the integrity and the impermeability of the polymer cutoff wall is proposed, and the corresponding proposals are offered based on calculation results.

Cut-off

Cutoff frequency

10.3390/su141911879

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Study on ground-penetrating radar wave field characteristics for earth dam disease considering the medium randomness

Journal of Applied Geophysics (2024)

Binghan Xue S. Zhang Zhifeng Dong Hongyuan Fang Jianwei Lei

Ground-Penetrating Radar

10.1016/j.jappgeo.2024.105535

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Comparison of the Seismic Responses of an Arch Dam under Excitation from the Design Response Spectrum in the New and Old Chinese National Standards

Water (2022)

Binghan Xue Jing Wang Na Li Chao Zhang Jianguo Chen

The new Chinese national standard, Standard for the seismic design of hydraulic structures (GB51247-2018), has been published. Compared with the Specifications for the seismic design of hydraulic structures (SL203-1997), the standard design response spectrum curve was revised in the new national standard. In order to compare the seismic responses of an arch dam under excitation from the design response spectrum in the new and old standards, the dynamic calculation of a 240 m high arch dam is carried out by a three-dimensional finite element method. In the dynamic calculation, the B-differentiable equation is used to simulate the tension motion of arch dam contraction joints, and the multi-transmitting boundary method and the Westergaard added mass method are used to simulate the dam–infinite foundation and dam–reservoir interactions, respectively. The results show that the dynamic stress responses of the arch dam under excitation from the design response spectrum in the new standard are increased compared with those of the old standard. The seismic safety of an arch dam may decrease under excitation from the design response spectrum in the new standard. Thus, the seismic validation on built arch dams should be carried out by using the new standard when it is possible.

Arch dam

Response spectrum

National standard

10.3390/w14050832

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Ground Penetrating Radar Image Recognition for Earth Dam Disease Based on You Only Look Once v5s Algorithm

Water (2023)

Binghan Xue Jianglin Gao Songtao Hu Yan Li Jianguo Chen

The Ground Penetrating Radar (GPR) method is a commonly used method for earth dam disease detection. However, the major challenge is that the obtained GPR image data of earth dam disease mainly relies on human judgment, especially in long-distance earth dam disease detection, which may lead to misjudgments and omissions. The You Only Look Once v5s (YOLOv5s) algorithm is innovatively employed for GPR image recognition to address the current challenge. The YOLOv5s neural network model has advantages over the traditional convolutional neural network in terms of object detection speed and accuracy. In this study, an earth dam disease detection model was established based on YOLOv5s. Raw images from actual earth dam disease detection and GPR forward simulation images were used as the initial dataset. Data augmentation techniques were applied to expand the original dataset. The LabelImg annotation tool was employed to classify and label earth dam disease, thereby creating an object detection dataset that includes earth dam disease features. The model was trained within this dataset. The results indicate that the total loss function of the model trained on the custom dataset initially decreases and then stabilizes, showing no signs of overfitting and demonstrating good generalizability. The earth dam disease detection model based on YOLOv5s achieved average precision rates of 96.0%, 95.5%, and 93.9% for voids, seepage, and loosening disease, respectively. It can be concluded that the earth dam disease detection model based on YOLOv5s may be an effective tool for intelligent GPR image recognition in identifying earth dam disease.

Ground-Penetrating Radar

Overfitting

10.3390/w15193506

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Citations (1)

Mechanical response of concrete pipe rehabilitated by liner under external load: Analytical solution

International Journal for Numerical and Analytical Methods in Geomechanics (2023)

Kejie Zhai Hongyuan Fang Niannian Wang Bin Li Jiaxiu Dong

Abstract Using pipe lines to rehabilitate concrete drainage pipes is a popular trenchless technique. In this paper, the concrete pipe and liner are equivalent to a symmetrical structural mechanics problem, and the mechanical solution of the composite structure is obtained using the force method. Subsequently, the analytical solutions are compared with the test and finite element results. The distribution law of axial force, bending moment, and shear force of the composite structure are obtained, and the circumferential strain law of the inner and outer surfaces of the host pipe is analyzed. Lastly, the influence of pipe diameter and liner thickness on the bearing capacity of the host pipe is examined. The results indicate that the axial and shear force distribution of the composite structure remains the same for different pipe diameters, as the distribution diagrams of shear and axial force along the circumferential direction coincide. While the elastic modulus and thickness of the liner have no effect on the internal force distribution of the composite structure, they do directly affect the stress state of the host pipe. Additionally, the bottom support causes abrupt changes in the bending moments and strains of the host pipe.

Shear force

Cylinder stress

10.1002/nag.3664

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Citations (10)