摘要
对塑料土工格栅加筋土结构的缩尺比例模型进行了振动台试验研究。试验过程中,采用两组试验模型,一组测定筋材的动应力应变;一组测定土筋间的动似摩擦系数。试验结果表明:塑料土工格栅筋材在地震作用下最大动拉应力的分布与静拉应力的分布沿筋材的埋深大致相同,只是应力的值大小不同;地震作用下土筋间的动似摩擦系数是随地震加速度的增加而减小。据此,提出了加筋土结构在地震区的设计建议。
In this paper, the experimental research on geogrids reinforced earth has been carried out using the scaled miniature models on the shaking table. There are two groups in this test, one group for measuring stress and strain of geogrids, another for measuring the contact efficient (CE) due to interaction between soil and geogrids. The test result shows that the distributions of the maximum stresses along deepth in both dynamic test and static test are the same approximately, but the both values of stresses are different. The contact efficient (CE) is reduced with the increase of the seismic acceleration. The test result is suggested in the design in seismic district.
出处
《四川建筑科学研究》
2004年第2期45-47,共3页
Sichuan Building Science
基金
云南省应用自然科学基金资助项目(2001E0022M)
