Land Subsidence Prediction Model of Rail Transit Based on High-frequency Combination Segment-Gene Expression Programming Algorithm
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 8
Abstract
Objective Land subsidence prediction and control is one of the most concerned issues in rail transit shield tunnel construction. In order to solve the complex and poor interpretable problem of the model expression in the existing land subsidence prediction and control, an interpretable model that is concise, clear，and capable of describing complex problems is needed. GEP (gene expression programming) algorithm provides this possibility, so it is necessary to study in depth the rail transit land subsidence prediction model based on HFS (high frequency segment)-GEP algorithm. Method Based on the shield tunnel project of a certain shield tunnel section in Hangzhou-Shaoxing Intercity Railway, parameters such as earth chamber pressure, cutterhead torque, cutterhead speed, advancing speed, total thrust, tunnel buried depth and shield tail grouting amount during shield construction are selected as key input construction parameters, with land subsidence as the output construction parameter. Through alternative formula set screening and HFS selection, a land subsidence prediction model of rail transit based on HFS-GEP algorithm is established. Key construction parameters of the 180th-210th section are optimized and adjusted with the model, and effect of the shield construction parameters change on the final land subsidence is analyzed. Result & Conclusion The land subsidence prediction model of rail transit based on HFS-GEP algorithm can reflect the explicit relationship between shield construction parameters and final land subsidence. Compared with the traditional GEP algorithm model, this model has higher accuracy, simpler structure and faster convergence. By optimizing and adjusting the key construction parameters of the shield, the final subsidence of the 180th-210th section can be controlled within 10 mm.
Authors and Affiliations
Min HU, Mengdong LU
Keywords
Related Articles
- EP ID EP742706
- DOI 10.16037/j.1007-869x.2024.08.035
- Views 54
- Downloads 0
Characteristics and Applicability Analysis of Flexible Scheduling for Urban Rail Transit Crews
[Objective] In view of the situation that the flexible crew scheduling method commonly used in foreign metro systems is barely applied in China, the applicability of flexible scheduling in Chinese metro system and the ma...
Control Circuit Optimization for High-speed Circuit Breaker in Traction System of Jinan Metro Line 3
[Objective] In the early operation stage of Jinan Metro Line 3, multiple sporadic high-speed circuit breaker closing failures are reported. To improve the reliability of train operation, it is necessary to optimize the h...
Establishment and Application of Wireless Fingerprint Library for Urban Rail Transit Vehicle-wayside Communication
Objective Currently, wireless environment detection for urban rail transit vehicle-wayside communication primarily relies on manual testing with instruments, which is labor-intensive and inefficient. To meet the needs fo...
Optimization Analysis of Treatment Scheme for Metro Tunnel Base Waterlogged Collapsible Loess Formation
Objective To study the optimization measures for treating waterlogged collapsible loess stratum, it is necessary to investigate the deformation characteristics of tunnel structures after loess collapse by waterlogging. M...
Asset Management Value Oriented Nanjing Metro Asset Information System Construction
[Objective] In the process of URT (urban rail transit) asset formation, there are challenges in the smooth transmission of asset information, leading to issues such as ′inconsistency between accounts and reality,′ diffic...