基于多参数实时反馈的沉井下沉摩擦动态调控方法
By employing a multi-parameter real-time feedback method, combined with Persson's multi-scale contact theory and the extended rate-state friction equation, the frictional resistance during the caisson sinking process can be monitored and controlled in real time. This solves the problem of inaccurate frictional resistance prediction in existing technologies and improves construction safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI UNIV OF TECH
- Filing Date
- 2026-04-15
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the accuracy of predicting frictional resistance during the sinking of caissons is low, leading to problems with construction safety and efficiency. This is mainly because the simplified Coulomb's law ignores the rheological properties of the soil and the dynamic changes of the contact interface, resulting in large errors.
A multi-parameter real-time feedback method is adopted to monitor the normal stress, soil shear wave velocity, pore water pressure and sinking velocity between the well wall and the soil in real time. Combining Persson's multi-scale contact theory and the extended rate-state friction equation, the real-time friction coefficient and effective contact area are calculated, and control commands are generated for dynamic control. Instability is avoided by grouting and water pressure control.
It enables precise prediction and dynamic control of frictional resistance during the sinking process of the caisson, improves construction safety and efficiency, avoids accidents such as tilting, stagnation or sudden sinking, and ensures the stability and safety of construction.
Smart Images
Figure CN122064902B_ABST