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为了研究慈竹土工格栅在四川巴中-南充高速公路填筑路堤加固应用中的可行性,通过新鲜慈竹的顺纹抗拉和弯曲试验统计分析了慈竹土工格栅的力学性能,将其与传统土工格栅的力学性能相比表明:慈竹土工格栅能满足规范对传统土工格栅的要求,可用于填筑路堤加固。根据力学性能试验结果,选取龄期2 a以上的慈竹作为该公路路堤的辅助加筋材料。通过室内直剪试验对慈竹加筋土的界面特性进行研究,确定了竹青和竹黄朝向间隔布置的竹片格栅相对较优,对应的界面摩擦系数能达到0.32:拉拔试验获得竹片与土的界面似摩擦系数能达到0.35。提供的慈竹土工格栅的编织工艺以及加筋填筑路堤的施工工艺能更好地为工程服务。
In order to study the feasibility of using Ci-geogrid in Sichuan-Bazhong-Nanchong Expressway embankment construction, the mechanical properties of Ci-xi geogrid were statistically analyzed by the parallel tensile and flexural tests Compared with the mechanical properties of traditional geogrids, it shows that the geocell can meet the requirements of the traditional geogrids and can be used to reinforce embankments. According to the result of mechanics performance test, we choose the ceratzin more than 2 years as the auxiliary reinforcement material for the highway embankment. The interfacial characteristics of Ci bamboo reinforced soil were studied through indoor direct shear test. The results showed that bamboo and bamboo were oriented relatively well, and the corresponding interfacial friction coefficient could reach 0.32: bamboo Film and soil interface friction coefficient can reach 0.35. The knitting technology provided by CiXi geogrid, as well as the construction technology of reinforcing and filling the embankment, can better serve the engineering.