公开(公告)号：US11681841B1

公开(公告)日：2023-06-20

申请号：US17943226

申请日：2022-09-13

Applicant: KUNMING PROSPECTING DESIGN INSTITUTE OF CHINA NONFERROUS METALS INDUSTRY CO., LTD. ,  KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Wenlian Liu ,  Sugang Sui ,  Ze Li ,  Hanhua Xu ,  Bangtuan Wang ,  Pengfei Xu ,  Zejiang Li ,  Yahong Fan

IPC: G06F30/20 ,  G06F111/10

CPC classification number: G06F30/20 ,  G06F2111/10

Abstract: A method and device for calculating an optimal leveling stiffness of pile top displacement regulators in a composite foundation are disclosed. The method includes: determining basic parameters for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation; building an optimal mathematical model for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation, and solving the optimal mathematical model for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation to obtain the optimal leveling stiffness. The method and device maximize the bearing capacity of the composite foundation by taking an optimal value of the leveling stiffness of the pile top displacement regulators. The method and device realize accurate quantitative analysis for composite foundation design by adjusting the value of the leveling stiffness of the pile top displacement regulators.

公开(公告)号：US11733146B1

公开(公告)日：2023-08-22

申请号：US18072319

申请日：2022-11-30

Applicant: Kunming University of Science and Technology

Inventor： Zhiquan Yang ,  Mao Chen ,  Yingyan Zhu ,  Yi Yang ,  Wentao Chen ,  Yuqing Liu ,  Muhammad Asif Khan ,  Bihua Zhang ,  Hanhua Xu ,  Tianbing Xiang ,  Jie Zhang

IPC: G01N15/08 ,  G01N33/38 ,  G01N33/24

CPC classification number: G01N15/0893 ,  G01N33/246 ,  G01N33/383

Abstract: A method for determining a column-hemispherical permeation radius with time-varying property of power-law cement grout and tortuosity of rock and soil mass is provided, including: acquiring a porosity ϕ of rock and soil mass and a corresponding permeation coefficient K by geotechnical tests, measuring a groundwater pressure P0 at a grouting point and determining tortuosity ξ of rock and soil mass; acquiring an initial consistency coefficient c0, a rheological index n and a time-varying property coefficient k of power-law cement grout with a designed water to cement ratio by rheological tests, and determining the viscosity of water μw; acquiring grouting parameters, including a grouting pressure P1, grouting time t, a number m of grouting holes of a side surface of a grouting pipe and a grouting hole radius r; and solving a column-hemispherical permeation grouting diffusion radius R considering coupling effect both the tortuosity of rock and soil mass and the time-varying property of power-law cement grout.