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(鐵道第四勘察設(shè)計(jì)院武漢 430063)

［提要］通過(guò)產(chǎn)品技術(shù)性能的對(duì)比，提出當(dāng)前國(guó)內(nèi)設(shè)計(jì)使用土工格柵中存在的一些問(wèn)題和發(fā)展我國(guó)土工格柵的對(duì)策。為了使土工格柵達(dá)到與國(guó)際接軌的目的，以英國(guó)耐特龍集團(tuán)公司的產(chǎn)品標(biāo)準(zhǔn)作為一個(gè)相對(duì)的基準(zhǔn)對(duì)國(guó)內(nèi)產(chǎn)品進(jìn)行了評(píng)價(jià)。強(qiáng)調(diào)了對(duì)使用周期長(zhǎng)的工程，設(shè)計(jì)時(shí)必須選用格柵的蠕變強(qiáng)度，而不是質(zhì)量控制強(qiáng)度。介紹了蠕變強(qiáng)度的一系列評(píng)價(jià)方法，提出了國(guó)產(chǎn)塑料土工格柵與世界接軌的建議。

［關(guān)鍵詞］塑料土工格柵  經(jīng)編土工格柵  蠕變強(qiáng)度  質(zhì)量控制強(qiáng)度  假性格柵

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