This study aims to provide substantial theoretical support for employing vacuum preloading‐airbag pressurization (VP‐AP) to enhance soft soil foundations. By integrating the airbags and prefabricated vertical drains (PVDs) within the analytical framework, the consolidation models are developed to accommodate double smear zones and well resistance. Analytical solutions for various airbag pressurization scenarios are derived under the equal‐strain assumption. A model test is subsequently conducted to investigate the settlement process of soft soil using the VP‐AP method. The validity of the proposed theoretical model is corroborated through comparison with existing analytical solutions and experimental data. The accuracy of the predictive model is further substantiated by the model test results. Lastly, this research offers an in‐depth analysis of soil consolidation behavior under diverse influencing factors. The findings indicate that the VP‐AP method demonstrates superior efficacy over conventional vacuum‐surcharge preloading when the airbag pressure matches the external load pressure. Additionally, an increase in the radius of airbags enhances the soil consolidation efficiency. The analytical model presented in this study elucidates the consolidation mechanisms of the VP‐AP method, with experimental research confirming the efficacy of this approach and the predictive model established herein.

中文翻译：

---

真空预压-气囊加压软土固结解析模型与试验


本研究旨在为采用真空预压-气囊加压（VP-AP）加固软土地基提供实质性的理论支持。通过将安全气囊和预制垂直排水管（PVD）集成到分析框架内，开发了固结模型以适应双涂抹区和良好的阻力。在等应变假设下导出了各种安全气囊加压场景的解析解。随后进行模型试验，利用 VP-AP 方法研究软土的沉降过程。通过与现有解析解和实验数据的比较，证实了所提出理论模型的有效性。模型测试结果进一步证实了预测模型的准确性。最后，本研究对不同影响因素下的土壤固结行为进行了深入分析。研究结果表明，当气囊压力与外部负载压力匹配时，VP-AP 方法表现出比传统真空预载更优越的效果。此外，气囊半径的增加提高了土壤固结效率。本研究提出的分析模型阐明了 VP-AP 方法的巩固机制，实验研究证实了该方法和本文建立的预测模型的有效性。