Three comparative treatment plans are used to study the effect of red clay subgrade reinforced with geocell. Multiple subgrade test methods including Benkelman beam, portable falling weight deflectometer, dynamic cone penetrometer and standard vehicle load tests are adopted in the field tests. Test results show that the application of geocell in red clay subgrade can enhance the overall stiffness and strength of the subgrade. The mechanism of geocell in the subgrade is studied. Geocell can provide added confinement to the subgrade soil. Compared with the red clay subgrade without geocell reinforcement, for the red clay subgrade reinforced with 0.1 m-high geocell and 0.05 m-high geocell, the rebound modulus increases by 65% and 33%, the dynamic modulus increases by 69% and 38% and the penetration decreases by 51.7% and 40.4%, respectively. A hard shell layer is formed in the subgrade when it is reinforced with geocell. The geocell-reinforced layer mainly plays the role of stress diffusion. It not only can reduce the additional stress in the subgrade but can also diminish the influence of the depth of the vehicle load.

中文翻译：

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土工格室加筋红粘土路基性能研究

采用三种对比处理方案研究了土工格室加固红粘土路基的效果。现场试验采用了本克尔曼梁、便携式落锤弯沉仪、动锥贯入仪、标准车辆荷载试验等多种路基试验方法。试验结果表明，土工格室在红粘土路基中的应用，可以提高路基的整体刚度和强度。研究了土工格室在路基中的作用机理。土工格室可以对路基土壤提供额外的限制。与不加土工格室的红粘土路基相比，0.1 m高土工格室和0.05 m高土工格室加筋的红粘土路基，回弹模量分别提高了65%和33%，动模量分别提高了69%和38%渗透率分别下降51.7%和40.4%。当用土工格室加固时，路基中会形成硬壳层。土工格室加筋层主要起应力扩散作用。它不仅可以减少路基的附加应力，而且可以减少车辆荷载深度的影响。