论文部分内容阅读
土工格室柔性挡墙作为一种新型公路边坡支挡结构,在公路边坡防护中具有广阔的应用前景。柔性挡墙在土压力作用下会发生挠曲变形,其破坏模式与刚性挡墙相比具有一定的差异,并且墙顶填土表面常会作用堆载。通过离心模型试验研究了填土表面作用荷载时土工格室柔性挡墙的破坏模式,并与高宽比和坡度相同的未施加荷载的柔性挡墙进行了对比。研究结果表明:填土面荷载对土工格室柔性挡墙破坏时的滑楔体影响较小,因此在土压力计算中可以采用与填土面无荷载作用时相同的破坏模式。
Geocell flexible retaining wall as a new type of highway slope support structure, slope protection in highway has broad application prospects. The flexible retaining wall will buckle and deform under the action of earth pressure, and its failure mode has some differences compared with the rigid retaining wall. Centrifugal model tests were conducted to study the failure modes of geogrid-reinforced flexible retaining walls under loading on the soil surface, and compared with the same un-loaded flexible retaining wall with the same aspect ratio. The results show that the load on the fill surface has little effect on the sliding wedge when the flexible retaining wall of the geocell is damaged. Therefore, the same failure mode can be used in the calculation of earth pressure without load.