西南交通大学学报2017，Vol.52Issue(3)：546-553,8.DOI:10.3969/j.issn.0258-2724.2017.03.015
高速铁路加筋土挡墙动响应规律现场试验
In-Situ Test on Dynamic Responses of Reinforced Soil Retaining Walls for High-Speed Railways
摘要
Abstract
In order to study the dynamic responses and mechanism of geogrid reinforced soil retaining wall under the loads of high-speed vehicles,in-situ vibration excitation tests were conducted to obtain distributions of acceleration and dynamic soil pressure in geogrid reinforced soil retaining wall.The dynamic responses of different wall faces were compared.The results show that,with the increase of load cycles,the vertical acceleration of reinforced soil is nearly unchanged.The dynamic soil pressure near wall surface in the horizontal direction has a single-peak distribution and its max-value is located at 2/3 of the wall height.The vertical dynamic soil pressure has a little increase with the number of load cycles.In the range from wall top to 1/3 wall height,the vertical acceleration attenuates 87％-91％ and the vertical dynamic soil pressure attenuates 86％.The reinforced soil retaining wall with block panel has the merits of large rigidity,small deformation and strong integrity.关键词
高速铁路/土工格栅/加筋土挡墙/现场激振试验Key words
high-speed railway/geogrids/reinforced soil retaining wall/in-situ vibration excitation tests分类
建筑与水利引用本文复制引用
吴连海,杨广庆,张青波,孙宏伟,张利国,焦瑞玲,苏谦..高速铁路加筋土挡墙动响应规律现场试验[J].西南交通大学学报,2017,52(3):546-553,8.基金项目
国家自然科学基金资助项目(51178280,51378322) （51178280,51378322）
铁道第三勘察设计院集团有限公司科技开发课题(721125). （721125）
