拉伸塑料土工格栅在不同拉伸方法下的拉伸特性对比研究  

Comparative Study on the Tensile Properties of Stretched Plastic Geogrids under Different Stretching Methods

作　　者：庞巍 杨广庆 梁训美[3] 赵云斐 王志杰 PANG Wei;YANG Guang-qing;LIANG Xun-mei;ZHAO Yun-fei;WANG Zhi-jie(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Shandong Road New Materials Co.,Ltd.,Taian 271000,China;School of Traffic and Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,石家庄050043 [3]泰安路德工程材料有限公司,泰安271000 [4]石家庄铁道大学交通运输学院,石家庄050043

出　　处：《价值工程》2021年第32期97-99,共3页Value Engineering

基　　金：国家自然科学基金,“重载铁路双面加筋土挡墙服役性能演变与状态调控研究”(No.52079078);河北省重点研发计划项目,“基于建养一体化的山区公路高陡路堤性能演化与安全保障关键技术”(20375504D);泰山产业领军人才,“高性能智能化土工格栅新产品研发及产业化”(tscy20180228)。

摘　　要：拉伸塑料土工格栅是一种性能优良的土工合成材料,对其拉伸特性以及拉伸方法的研究具有重要现实意义。通过不同拉伸方法及拉伸速率下拉伸塑料土工格栅的拉伸特性来总结单肋法、多肋法对格栅各项力学性能指标的影响。最后得出:随拉伸速率的增大,拉伸方法对峰值应变的影响逐渐减小;拉伸方法对拉伸强度和中低应变时的拉伸模量影响不大,而峰值应变对应的拉伸模量受拉伸方法的影响较大。Geogrid is one of the excellent performance geosynthetic materials,it is important to study its tensile properties.In order to study the tensile characteristics of geogrid,a series of tests under different methods and tensile rates have been conducted.The test results indicate that the peak strain has been reduced with the increase of tensile rate.Different tensile methods have little effect on tensile strength and tensile modulus at lower strains,while the tensile modulus corresponding to peak strain is affected by method.

关 键 词：拉伸塑料土工格栅 单肋法 多肋法 拉伸速率 拉伸特性 

分 类 号：TU476[建筑科学—结构工程]