Optimizing Subgrade Replacement Depth for Weak Foundations: A Parametric Analysis and Practical Validation for Industrial Road Projects
DOI:
https://doi.org/10.66069/ojspub.26820908Keywords:
Subgrade replacement, Replacement depth, Weak foundation, HAPDS program, Bearing capacityAbstract
This study reviews the current state and operational principles of subgrade replacement technology, and applies the load‑working‑zone method to calculate the required replacement depth for weak foundation sections. The results are verified and cross‑checked using the HAPDS pavement analysis program. By comparing outcomes from different computational approaches, the paper identifies key parameters that significantly influence replacement depth. Practical applications confirm that the standardized implementation of subgrade replacement technology substantially improves bearing capacity and structural stability, thereby ensuring the construction quality and overall service performance of industrial road projects.
References
Li Yajuan. Study on the Applicability of Typical Methods for Soft Soil Foundation Treatment in Mountainous Areas [D]. Chongqing Jiaotong University, 2014. 15 Jiang Guozhong. Application and Effect of Replacement Cushion Method in Foundation Treatment [. Journal of Lishui University, 2006, 28(5):69-72.
Jiang Guozhong. Application and Effect of Replacement Cushion Method in Foundation Treatment [. Journal of Lishui University, 2006, 28(5):69-72.
Dang Gaihong, Ding Boyang, Qi Feng. Discussion on Engineering Characteristics and Treatment Methods of Miscellaneous Fill Foundation in Mountainous Areas [. Geotechnical Engineering World, 16 2009(9):24-27.
Mei Yulong, Tao Guilan. Optimal Design of Cushion Thickness by Replacement Method [J1. China Harbour Engineering, 2006(3):36-38.
Xu Jian, Niu Fujun, Niu Yonghong, et al. Analysis of the Effect of Replacement Method on Inhibiting Frost Heave of Railway Subgrade in Seasonal Frozen Soil Regions J. China Railway Science, 2011, 32(5):1-7.
Liu Wujun, Wang Jie, Zhang Xiangbin, Construction Technology of Silt Foundation Treatment by Wooden Pile Foundation Reinforcement and Pebble Replacement Method [J. Yellow River, 2012, 33(12):134-135.
Mo Baijin. Technology for Treating Wet-Soft Foundations and Analysis of Bearing Capacity of Replacement Method [. Journal of Highway and Transportation Research and Development, 2008, 9:021.
Wen Lianying, "Research on the Application of Sand-Gravel Replacement Construction Technology in Reinforcement Treatment of Soft Soil Subgrade", Urban Architecture, 2019.16.