(铁道第四勘察设计院武汉 430063)

［提要］通过产品技术性能的对比，提出当前国内设计使用土工格栅中存在的一些问题和发展我国土工格栅的对策。为了使土工格栅达到与国际接轨的目的，以英国耐特龙集团公司的产品标准作为一个相对的基准对国内产品进行了评价。强调了对使用周期长的工程，设计时必须选用格栅的蠕变强度，而不是质量控制强度。介绍了蠕变强度的一系列评价方法，提出了国产塑料土工格栅与世界接轨的建议。

［关键词］塑料土工格栅  经编土工格栅  蠕变强度  质量控制强度  假性格栅

Discussion on Problems in Usage of Geogrid/Bai Risheng(Consulting Firm of the 4th Survey and Design Institute,Wuhan 430063,China)

Abstract:Through the comparison of products" characteristic,the problems in usage of geogrid are presented.The product of U.K. Netlon Group is taken as a standar to evaluate the civil one.It emphasized that for the long term engineering, the creep strength should be chosen in design,while not the quality control strength.The evaluation rules of creep strength and the characteristics of pseudo grids are introduced.It can be referred for engineers.

Keywords:plastic geogrid; fake geogrid; creep strength; quality control strength; pseudo grid