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目前，对于断层错动下加筋铁路路基变形机制的研究仍有限，影响了对加筋铁路路基抗错动性能的科学评价。基于自主研发的断层错动模型试验装置开展了室内模型试验，对有无加筋铁路路基的变形机制进行了对比研究。结果表明：在逆断层错动的作用下，土工格栅能够有效抑制路基内部出现的张拉破裂，并能够一定程度上减轻断层固定盘上方路基挤压型破碎带的破碎程度，减小路基变形破坏范围；相较于未加筋路基，土工格栅加筋路基面变形更缓和，线路竖向平顺性得到了改善；土工格栅在一定程度上改善了断层错动下路基附近地基的稳定性。
Abstract：At present, there is little research on the deformation mechanism of reinforced railway subgrade under fault dislocation, which affects the evaluation of the dislocation-resistance performance of reinforced railway subgrade. Using the self-developed fault dislocation model test equipment, model tests were carried out. The deformation mechanisms of reinforced railway subgrade were compared with those of unreinforced railway subgrade. The results show that under the reverse fault dislocation, geogrid can effectively restrain the tension fractures in the subgrade. It can also reduce the crushing degree of the subgrade compression crush zones above the fault fixed plate and reduce, to a certain extent, the deformation and failure range of the subgrade. Compared with the unreinforced subgrade, the deformation of geogrid reinforced subgrade surface is more moderate. The vertical smoothness of the line is improved. Geogrid can improve the stability of the foundation near the subgrade under fault dislocation to a certain extent.
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基本信息:
DOI：
中图分类号:U213.1
引用信息:
[1]梁经纬,蔡德钩,闫宏业等.逆断层错动对土工格栅加筋铁路路基变形的影响[J].铁道建筑,2025,65(06):13-18.
基金信息:
中国铁道科学研究院集团有限公司基金（2021YJ314）; 腾讯科学探索奖（2022）