Patents by Inventor Zhiwang CHANG

Zhiwang CHANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mechanical-model based earthquake-induced landslide hazard assessment method in earthquake-prone mountainous area
    Patent number: 11543548
    Abstract: A mechanical-model based earthquake-induced landslide hazard assessment method in earthquake-prone mountainous area includes: obtaining the cohesion and internal friction angle through a geological map of the study area and a geotechnical physical parameter; obtaining simulated ground motions by combining a pulse-like ground motion effect model and a pulse-like ground motion response model; calculating slope permanent displacement according to the simulated ground motions, the cohesion, the internal friction angle and other parameters; obtaining a statistical relationship between the permanent displacement and a landslide probability according to permanent displacement data derived from historical earthquake-induced landslides and historical strong earthquake records; and predicting earthquake-induced landslide probability according to the slope permanent displacement and the statistical relationship between the permanent displacement and the landslide probability, and quantitatively evaluating earthquake-ind
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: January 3, 2023
    Assignee: SOUTHWEST JIAOTONG UNIVERSITY
    Inventors: Yingbin Zhang, Jing Liu, Haiying Fu, Qingdong Wang, Chenlin Xiang, Dejian Li, Jiangtao Wei, Yin Cheng, Zhiwang Chang, Pengcheng Yu
  • MECHANICAL-MODEL BASED EARTHQUAKE-INDUCED LANDSLIDE HAZARD ASSESSMENT METHOD IN EARTHQUAKE-PRONE MOUNTAINOUS AREA
    Publication number: 20210026027
    Abstract: A mechanical-model based earthquake-induced landslide hazard assessment method in earthquake-prone mountainous area includes: obtaining the cohesion and internal friction angle through a geological map of the study area and a geotechnical physical parameter; obtaining simulated ground motions by combining a pulse-like ground motion effect model and a pulse-like ground motion response model; calculating slope permanent displacement according to the simulated ground motions, the cohesion, the internal friction angle and other parameters; obtaining a statistical relationship between the permanent displacement and a landslide probability according to permanent displacement data derived from historical earthquake-induced landslides and historical strong earthquake records; and predicting earthquake-induced landslide probability according to the slope permanent displacement and the statistical relationship between the permanent displacement and the landslide probability, and quantitatively evaluating earthquake-ind
    Type: Application
    Filed: July 27, 2020
    Publication date: January 28, 2021
    Applicant: Southwest Jiaotong University
    Inventors: Yingbin ZHANG, Jing LIU, Haiying FU, Qingdong WANG, Chenlin XIANG, Dejian LI, Jiangtao WEI, Yin CHENG, Zhiwang CHANG, Pengcheng YU