岩土工程学报2013，Vol.35Issue(z1)：287-293,7.
三向格栅加筋桥头路堤的试验和数值模拟分析
Experimental and numerical studies on triaxial geogrid-reinforced embankment at bridge approach
摘要
Abstract
Field experiment on the embankment at bridge approach reinforced by triaxial geogrid is carried out in Changzhi to Pingshun expressway.The earth pressures of the embankment fill below and above the triaxial geogrid and the deformations of the triaxial geogrid measured in cases of its attachment to or not to the abutment.The effective length and the effect of the triaxial geogrid reinforcement in the embankment of bridge approach are investigated.In addition,the differential settlements at the bridge approach of and the tensile forces of the geogrid are analyzed through numerical simulations.The results show that the earth pressures and the settlements can be reduced by the triaxial geogrid reinforcement in the embankment in a certain extent,and the effect of the triaxial geogrid reinforcement is extend to nearly 6 m from the abutment.The tensile force of the triaxial geogrid can be increased and the settlement can be reduced with the triaxial geogrid attached to the abutment.While the effect of reinforcement without attachment is not obvious.The tensile stiffness of the geogrid and the cohesion of embankment fill have great effect on the tensile force and the settlement of the embankment.Thus the geogrid with appropriate tensile stiffness the embankment fill with suitable cohesion should be employed in practice.关键词
加筋路堤/沉降/桥头/现场试验/数值模拟Key words
reinforced embankment/ settlement/ bridge approach/ field experiment/ numerical simulation分类
建筑与水利引用本文复制引用
马强,肖衡林,李丽华,陶高梁..三向格栅加筋桥头路堤的试验和数值模拟分析[J].岩土工程学报,2013,35(z1):287-293,7.基金项目
国家自然科学基金项目(51208187):教育部重点项目(2010133) （51208187）
湖北省教育厅优秀中青年人才项目(Q20111409) （Q20111409）
湖北省创新群体项目(2012FFA035) （2012FFA035）
