中文摘要：

通过定速度压缩试验,研究了不同形状（圆形、六边形、正方形）及受不同侧限（柔性侧限、刚性侧限、无侧限）约束的单个土工格室加筋试样在圆形荷载作用下的承载力和变形特性,分析实验所得的荷载-位移曲线,探索不同形状、不同侧限约束作用对土工格室加筋效果的影响.结合试验,采用FLAC3D（Three Dimensional Fast Lagrangian Analysis of Continua）对不同工况下的加筋土体进行了数值模拟,比较分析不同工况下的云图.结果表明：不同形状的格室单元对土体均有加筋效果,且圆形格室的加筋效果最好;侧限可以减小土工格室加筋土的水平位移,约束土体的变形,且侧限材料的模量越大,加筋土体的刚度越大.

英文摘要：

To better understand the bearing capacity and deformation characteristics under circular load, a series of compression tests with the same space were conducted on single geocell-reinforced sand samples of three different shapes（circular, rectangular, and hexagonal cross-sections） and three different constraint conditions （under flexible confining, rigid confining and unconfined condition）. The effects of these varia- bles were investigated according to the pressure-settlement curves. FLAC3D （Three Dimensional Fast La- grangian Analysis of Continua） was introduced to simulate the compression tests. The nephograms of sin- gle geoeell-reinforced sand in different conditions were compared. The results show that the geocell can im- prove the strength of soil. Circular cells have the best effect on reinforced sand of the cells of all shapes. Confining can constrain the deformation of soil and reduce the horizontal displacement of single geocell- reinforced sand. With the modulus of confined material increasing, the stiffness of the geocell-reinforced sand increases.