Patents Assigned to Southeast University
  • Publication number: 20250139331
    Abstract: The present invention relates to a targeted perception-oriented twin substructure interaction method and system, and application. The method includes: acquiring multivariate inspection and monitoring data and finite element influence line data of a main structure; solving, on the basis of the inspection and monitoring data and the finite element influence line data of a non-focus region, boundary conditions of a focus region; establishing, for the focus region, a refined twin substructure finite element model, and correcting material properties of the refined twin substructure finite element model on the basis of the inspection and monitoring data and the finite element influence line data of the focus region; and calculating a correction force on the basis of the boundary conditions of the focus region and the material properties, and using the correction force as an equivalent external load to act on nodes of a global finite element model.
    Type: Application
    Filed: November 6, 2023
    Publication date: May 1, 2025
    Applicant: Southeast University
    Inventors: Jian Zhang, Yixuan Chen, Feiyu Wang, Chenhao Gao
  • Patent number: 12288292
    Abstract: An automatic generation method for three-dimensional morphology of ruts in asphalt pavements comprises: constructing a standard rut cross-section representation model, classifying ruts, acquiring detection data of a rutted section of an asphalt pavement, selecting different rut cross-sections at equal intervals in a longitudinal direction of the pavement, denoising and smoothening the rut cross-sections, selecting feature points according to geometric fluctuation features of the rut cross-sections, connecting the feature points and fitting a cross-sectional curve based on an evolution law of rut deformation, and fusing multiple reconstructed rut cross-sections to realize automatic generation and visualization of three-dimensional morphology of a rut.
    Type: Grant
    Filed: November 24, 2022
    Date of Patent: April 29, 2025
    Assignee: Southeast University
    Inventors: Leilei Chen, Daoxie Chen, Yuxuan Liu, Zhendong Qian, Wei Li
  • Patent number: 12258296
    Abstract: The disclosure belongs to the technical field of materials for civil construction engineering, and specifically relates to a green and low carbon emission foamed lightweight soil prepared by using serpentine, magnesium oxide and CO2 as raw materials. In the serpentine carbon sequestration foamed lightweight soil, the ingredients of raw material include: magnesium oxide, serpentine, a filler, CO2 bubbles and water.
    Type: Grant
    Filed: February 10, 2023
    Date of Patent: March 25, 2025
    Assignee: Southeast University
    Inventors: Songyu Liu, Xiang Zhang, Zhenyang Yuan
  • Publication number: 20250076582
    Abstract: The present disclosure discloses an asymmetric wavelength multiplexing and demultiplexing chip based on inverse design, which belongs to the technical field of optical components, systems or instrument. The chip includes the first-level asymmetric wavelength multiplexing and demultiplexing unit and the second-level symmetric wavelength multiplexing and demultiplexing unit, which is constructed by silicon based photonics integration technology, includes a substrate, a bottom cladding layer, a core layer and a top cladding layer sequentially stacked from bottom to top. The functional regions inside the first-level unit and the second-level unit are designed based on the inverse design algorithms, and are composed of subunits on the submicron or nanometer scale.
    Type: Application
    Filed: August 23, 2022
    Publication date: March 6, 2025
    Applicants: NANJING XIGUANG RESEARCH INSTITUTE FOR INFORMATION TECHNOLOGY CO., LTD, WUXI TACLINK OPTOELECTRONICS TECHNOLOGY CO., LTD., Southeast University
    Inventors: Weifeng JIANG, Xiaohan SUN, Xuekang SHAN, Sang GUI, Ronghua CHI, Lei WANG, Xianqin LI
  • Publication number: 20250074826
    Abstract: The disclosure belongs to the technical field of materials for civil construction engineering, and specifically relates to a green and low carbon emission foamed lightweight soil prepared by using serpentine, magnesium oxide and CO2 as raw materials. In the serpentine carbon sequestration foamed lightweight soil, the ingredients of raw material include: magnesium oxide, serpentine, a filler, CO2 bubbles and water.
    Type: Application
    Filed: February 10, 2023
    Publication date: March 6, 2025
    Applicant: Southeast University
    Inventors: Songyu LIU, Xiang ZHANG, Zhenyang YUAN
  • Publication number: 20250054234
    Abstract: An automatic generation method for three-dimensional morphology of ruts in asphalt pavements comprises: constructing a standard rut cross-section representation model, classifying ruts, acquiring detection data of a rutted section of an asphalt pavement, selecting different rut cross-sections at equal intervals in a longitudinal direction of the pavement, denoising and smoothening the rut cross-sections, selecting feature points according to geometric fluctuation features of the rut cross-sections, connecting the feature points and fitting a cross-sectional curve based on an evolution law of rut deformation, and fusing multiple reconstructed rut cross-sections to realize automatic generation and visualization of three-dimensional morphology of a rut.
    Type: Application
    Filed: November 24, 2022
    Publication date: February 13, 2025
    Applicant: Southeast University
    Inventors: Leilei CHEN, Daoxie CHEN, Yuxuan LIU, Zhendong QIAN, Wei LI
  • Publication number: 20250045476
    Abstract: Disclosed is a method for evaluating the fatigue damage and life of a bridge structure under a multi-factor coupling effect. The method comprises the following steps: S1, reproducing complex service environment action values; S2, analyzing performance values of a bridge structure; S3, calculating coupling fatigue damage of a vulnerable part; and S4, predicting a remaining life of the bridge structure. By adopting the method, the fatigue damage condition and remaining life of an in-service bridge under a multi-factor coupling effect can be accurately evaluated, and the effect of each factor/action and the coupling effect the factors/actions in fatigue damage of a vulnerable part are quantitatively analyzed, thereby providing data support and decision-making reference for the operation and maintenance management, reinforcement and repair, and optimal design of bridges.
    Type: Application
    Filed: July 4, 2023
    Publication date: February 6, 2025
    Applicant: Southeast University
    Inventors: Tong GUO, Zhongxiang LIU, Shiyuan WANG, Jie LIU
  • Publication number: 20250037370
    Abstract: The application relates to a dynamic visualization method and device for earthquake disasters. The method comprises: acquiring initial point cloud data of buildings and scenes in a target area; acquiring shake displacement data varying with time of the buildings by simulating an earthquake excitation on the buildings and the scenes; performing voxel downsampling and point cloud segmentation and extraction on the initial point cloud data to determine a ground point cloud and a point cloud of each building; updating in real time coordinates of each point of the point cloud of each building according to the shake displacement data; and rendering in real time the ground point cloud and the coordinates of each point of the point cloud of each building to generate a dynamic visual image for displaying. Accordingly, seismic scenes of regional buildings are presented more truly and visually, thus improving the visualization effect.
    Type: Application
    Filed: July 11, 2023
    Publication date: January 30, 2025
    Applicant: Southeast University
    Inventors: Tong GUO, Shuqi YU, Minte ZHANG
  • Publication number: 20250026686
    Abstract: The present invention discloses a microbially induced carbonate precipitation (MICP)-based vertical barrier, and a preparation method thereof, wherein a raw material of the vertical barrier includes in-situ soil, Ca-bentonite, a bacteria-containing culture medium, and a cementing solution. The bacteria-containing culture medium comprises flocculent ureolytic bacteria flora. The proportions of dry the Ca-bentonite to in-situ soil, the bacterial-containing culture medium to the cementing solution, and the cementing solution to the Ca-bentonite are specified to be 1:2, (2˜5):1, and (1˜2.5):10, respectively, to ensure optimal performance. The present invention addresses challenges related to the insufficient impermeability of Ca-bentonite-based barriers in the application of vertical barrier, and aims to reduce both the cost and carbon emissions associated with their construction.
    Type: Application
    Filed: December 29, 2022
    Publication date: January 23, 2025
    Applicant: Southeast University
    Inventors: Ningjun Jiang, Yu Zhang, Shiqi Liu, Xiangrui Xu
  • Patent number: 12197831
    Abstract: The invention discloses a ground motion intensity measure optimization method for seismic response prediction. The method includes the following steps: (1) building a building damage database; (2) optimizing ground motion intensity measures; (3) constructing a machine learning model; and (4) predicting damage states. According to the method, a combination of optimal ground motion intensity measures is selected by an elastic-net algorithm, wherein the efficiency and practicability in a current selection criterion are updated based on the goodness of fit and regression coefficient of the elastic-net model, thereby avoiding an assumption that intensity measures and structure response need to obey a logarithmic linear relationship and the limitation of intensity measure dimensions in traditional methods. By using the combination of optimal ground motion intensity measures as input variables, the prediction accuracy can be remarkably improved, and meanwhile the number of samples required is reduced.
    Type: Grant
    Filed: June 10, 2024
    Date of Patent: January 14, 2025
    Assignee: Southeast University
    Inventors: Decheng Feng, Jiayi Ding, Xuyang Cao, Shizhi Chen, Gang Wu
  • Patent number: 12140586
    Abstract: A calculation method for service life of concrete in a plateau environment considering protection and restoration effects is provided and includes a construction of a model based on a coupling effect of multi-factors of temperature-humidity-salt concentration-load under the plateau environment, simulation of protection and restoration effects, and quantification of service life. The model includes the physical fields of temperature conduction with variable boundary conditions, water dry-wet cycle transport, salt ion transport, and force fields caused by internal and external loads. The simulation of protection and restoration effects include: surface protective coating, damage restoration, and rebar corrosion resistance.
    Type: Grant
    Filed: February 19, 2024
    Date of Patent: November 12, 2024
    Assignee: Southeast University
    Inventors: Fengjuan Wang, Yuncheng Wang, Jinyang Jiang, Song Mu, Zhiyong Liu, Yingze Li
  • Patent number: 12116478
    Abstract: The present disclosure discloses an economical epoxy resin material for epoxy asphalt with low-temperature resistance and high flexibility as well as a preparation method thereof. The material comprises 60 parts of an epoxy resin main agent, 0.4 parts to 1.6 parts of a modifying gent, 31 parts to 36.5 parts of an active curing agent, 0.5 parts to 1.5 parts of a titanate coupling agent, and 1.6 parts to 6.4 parts of a reversible deformation additive.
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: October 15, 2024
    Assignee: Southeast University
    Inventors: Sang Luo, Jing Hu
  • Patent number: 12112243
    Abstract: A method for predicting the fluctuation of circuit path delay on the basis of machine learning, comprising the following steps: S1: selecting suitable sample characteristics by means of analyzing the relationship between circuit characteristics and path delay; S2: generating a random path by means of enumerating values of randomized parameters, acquiring the maximum path delay by means of performing Monte Carlo simulation on the random path, selecting a reliable path by means of the 3? standard, and using the sample characteristics and path delay of the reliable path as a sample set (D); S3: establishing a path delay prediction model, and adjusting parameters of the model; S4: verifying the precision and stability of the path delay prediction model; S5: obtaining the path delay.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: October 8, 2024
    Assignee: Southeast University
    Inventors: Peng Cao, Bingqian Xu, Jingjing Guo, Mengxiao Li, Jun Yang
  • Patent number: 12109162
    Abstract: A rope-driven soft hand function rehabilitation device includes four finger exoskeleton mechanisms, a thumb exoskeleton mechanism, and a soft rubber glove. An index-finger exoskeleton mechanism includes an index-finger distal phalanx loop, an index-finger middle phalanx loop, and an index-finger proximal phalanx loop which are mutually connected via a hinge structure. The thumb exoskeleton mechanism includes a thumb proximal phalanx loop and a thumb distal phalanx loop which are connected via a hinge structure. The rope is fastened to the hand function rehabilitation device via an aluminum sleeve which prevents the rope from slipping off during finger flexion/extension and abduction/adduction when the fingers are pulled by the rope at the palm and the hand back.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 8, 2024
    Assignee: Southeast University
    Inventors: Huijun Li, Yunxia Ouyang, Aiguo Song
  • Patent number: 12102977
    Abstract: A biomass-based porous carbon composite material and preparation thereof and an application thereof in CO2 adsorption are provided. In the biomass-based porous carbon composite material, with a pulping black liquid solid as a precursor, by arc treatment, porous carbon structures capable of physically adsorbing CO2 and basic substances capable of chemically adsorbing CO2 are obtained; with lignin in the precursor as the carbon source, and sodium hydroxide, sodium salts, and small-molecular carbohydrate degradation products in the precursor as the template and activator, porous carbon structures are obtained by arc thermal carbonization and self-activation; the basic substances are obtained by allowing sodium hydroxide and sodium salts in the precursor to undergo arc thermal decomposition. Further, the present disclosure relates to an application of the biomass-based porous carbon composite material in CO2 adsorption.
    Type: Grant
    Filed: January 24, 2024
    Date of Patent: October 1, 2024
    Assignee: Southeast University
    Inventors: Rui Xiao, Chao Liu, Jiahuan Xu, Beichen Xue, Yuyang Fan, Weicong Xu, Xiangchen Kong
  • Publication number: 20240165583
    Abstract: A biomass-based porous carbon composite material and preparation thereof and an application thereof in CO2 adsorption are provided. In the biomass-based porous carbon composite material, with a pulping black liquid solid as a precursor, by arc treatment, porous carbon structures capable of physically adsorbing CO2 and basic substances capable of chemically adsorbing CO2 are obtained; with lignin in the precursor as the carbon source, and sodium hydroxide, sodium salts, and small-molecular carbohydrate degradation products in the precursor as the template and activator, porous carbon structures are obtained by arc thermal carbonization and self-activation; the basic substances are obtained by allowing sodium hydroxide and sodium salts in the precursor to undergo arc thermal decomposition. Further, the present disclosure relates to an application of the biomass-based porous carbon composite material in CO2 adsorption.
    Type: Application
    Filed: January 24, 2024
    Publication date: May 23, 2024
    Applicant: Southeast University
    Inventors: Rui XIAO, Chao LIU, Jiahuan XU, Beichen XUE, Yuyang FAN, Weicong XU, Xiangchen KONG
  • Patent number: 11943080
    Abstract: Disclosed is a method for estimating dense multipath parameters by means of multipolarized broadband extended array responses, which includes: first transmitting multiple different transmitted signal sequences via a multipolarized antenna array, and processing received data in multiple snapshots according to the known transmitted signals, to obtain channel responses of multipolarized antenna components at all frequency points in a frequency band; extending the obtained channel response matrixes of multiple frequency points in multiple snapshots into a large two-dimensional channel response matrix; then, acquiring a delay parameter regarding multipath propagation by using a reference array element, and estimating two-dimensional departure and arrival angles by using a channel matrix subjected to frequency domain smoothing and dimensionality reduction; and afterwards, pairing the estimated departure and arrival angles, and estimating parameters such as the cross-polarization ratios, the initial phases, and the
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: March 26, 2024
    Assignee: Southeast University
    Inventors: Haiming Wang, Bensheng Yang, Peize Zhang, Chen Yu, Wei Hong
  • Patent number: 11906646
    Abstract: The invention discloses a method for estimating the air propagation delay of a direct wave, wherein an azimuth, an elevation angle and a total delay of a multipath wave reaching a receiving end are obtained through a receiving device; a departure angle of a reflected wave is obtained using a geometric relationship of wave reflection; a hypothetical point on a direct wave ray is selected as a transmitting end, and hereby the air propagation delay of the direct wave and the position of a reflection point of the reflected wave are calculated; the propagation delay and distance of the reflected wave are calculated according to the total delay of the direct wave and the reflected wave and the position of the hypothetical point. The invention can obtain the air propagation delay of the direct wave, thereby obtaining a propagation distance of the direct wave and fulfilling the requirements of ranging and positioning.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: February 20, 2024
    Assignee: Southeast University
    Inventors: Haiming Wang, Bensheng Yang, Wenhao Wu
  • Patent number: 11874366
    Abstract: In Intelligent Vehicle Infrastructure Cooperative Systems (IVICS), a high-precision vehicle positioning method utilizing Ultra-Wide Band (UWB) is proposed. Owing to remarkable wide band of radio signal, this UWB-based positioning method shows excellent anti-interference capability and multi-path immunity, which are essential for achieving high precision in practical traffic scenario. In this approach, several UWB nodes are deliberately deployed at the crossing with the help of roadside infrastructure in IVICS. Meanwhile, an algorithm aiming at Non Line of Sight (NLOS) error compensation is developed to improve the positioning performance. In a word, this method has been demonstrated the potential to achieve accurate, reliable, continuous and integrated localization.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: January 16, 2024
    Assignee: Southeast University
    Inventors: Xu Li, Huaikun Gao, Qimin Xu
  • Publication number: 20230407083
    Abstract: The present disclosure discloses an economical epoxy resin material for epoxy asphalt with low-temperature resistance and high flexibility as well as a preparation method thereof. The material comprises 60 parts of an epoxy resin main agent, 0.4 parts to 1.6 parts of a modifying gent, 31 parts to 36.5 parts of an active curing agent, 0.5 parts to 1.5 parts of a titanate coupling agent, and 1.6 parts to 6.4 parts of a reversible deformation additive.
    Type: Application
    Filed: June 14, 2023
    Publication date: December 21, 2023
    Applicant: Southeast University
    Inventors: Sang LUO, Jing HU