Abstract Geosynthetic-reinforced structures are required for constructing roads in the presence of trench voids. In this study, we propose a novel method with respect to the geosynthetic-reinforced cohesive subgrade spanning trench or column voids. Using this method, we can estimate the geosynthetics deformation w and strain e by considering various load patterns, the upper interface friction of geosynthetics, the subgrade subsidence, and further investigate the effect of the soil cohesion and the filling in voids on the geosynthetics. Moreover, the node tension bar model was employed with respect to the geosynthetics in the subsided area and the settlement area. The present results were in good agreement with the previous experimental and numerical results. Extensive parametric studies have also been conducted. Thus, the invert parabolic load pattern is the most unfavourable load pattern. Affected by the soil-geosynthetic relative displacement and subgrade soils, w and e are off by at least 10%. With the loss of fillings in void, w and e are increased up to 590% and 300%. Reducing the stiffness of geosynthetics leads to increasing w and e by up to 55% and 250%. In addition, the larger void width results in maximum 260% and 150% increases in w and e .

中文翻译：

---

土工合成材料加固粘性路基跨越沟渠空隙的分析解决方案

摘要 在存在沟槽空隙的情况下修建道路需要土工合成材料加筋结构。在这项研究中，我们提出了一种关于土工合成材料加固粘性路基跨越沟渠或柱体空隙的新方法。使用这种方法，我们可以通过考虑各种荷载模式、土工合成材料的上界面摩擦、路基下沉来估计土工合成材料的变形 w 和应变 e，并进一步研究土壤凝聚力和空隙填充对土工合成材料的影响。此外，对沉降区和沉降区的土工合成材料采用节点拉杆模型。目前的结果与先前的实验和数值结果非常吻合。还进行了广泛的参数研究。因此，倒抛物​​线荷载模式是最不利的荷载模式。受土壤-土工合成材料相对位移和路基土壤的影响，w和e至少相差10%。随着空隙中填充物的损失，w和e增加到590%和300%。降低土工合成材料的刚度会导致 w 和 e 增加多达 55% 和 250%。此外，较大的空隙宽度导致 w 和 e 最大增加 260% 和 150%。