Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Geogrid for reinforcing ballast bed
The invention relates to a geogrid for reinforcing a gravel ballast bed, the geogrid is laid on a ballast layer on a roadbed bottom layer, the grid densities of the geogrid in different ballast bed transverse areas are different, and two adjacent geogrid areas with different grid densities are connected with each other through a connecting rod or integrally formed at a time. The geogrid is further buried by a railway ballast layer and a sleeper, and the geogrid is divided into a sleeper core area, an under-rail area and a ballast shoulder area according to the linkage relation between the microscopic movement and stress of the railway ballast and the transverse migration characteristics of the railway ballast. Compared with the prior art, the linkage relation between microscopic movement and stress of the railway ballast and the transverse migration characteristic of the railway ballast are fully considered, and the geogrid reinforcing design method adopting the three-level differential grid density is provided, namely, the grid density of the sleeper core and the ballast shoulder area is high, and the grid density of the under-rail area is low; and the long-term dynamic stability and durability of the ballast bed can be improved.
本发明涉及一种用于碎石道床加固的土工格栅，该土工格栅铺设在路基底层上的道砟层上，土工格栅在不同的道床横向区域内的网格密度不同，相邻两个不同网格密度的土工格栅区域间通过连接棒或整体一次成型相互连接，土工格栅还受道砟层和轨枕埋置，依据道砟细观运动和受力的联动关系以及道砟横向迁移特征，土工格栅分为枕心区、轨下区和砟肩区。与现有技术相比，本发明充分考虑了道砟细观运动和受力的联动关系以及道砟横向迁移特征，提出了采用三级差异化格栅密度的土工格栅加固设计方法，即枕心和砟肩区域的格栅密度较高、轨下区域的格栅密度较低，有助于改善碎石道床的长期动力稳定性和耐久性。
Geogrid for reinforcing ballast bed
The invention relates to a geogrid for reinforcing a gravel ballast bed, the geogrid is laid on a ballast layer on a roadbed bottom layer, the grid densities of the geogrid in different ballast bed transverse areas are different, and two adjacent geogrid areas with different grid densities are connected with each other through a connecting rod or integrally formed at a time. The geogrid is further buried by a railway ballast layer and a sleeper, and the geogrid is divided into a sleeper core area, an under-rail area and a ballast shoulder area according to the linkage relation between the microscopic movement and stress of the railway ballast and the transverse migration characteristics of the railway ballast. Compared with the prior art, the linkage relation between microscopic movement and stress of the railway ballast and the transverse migration characteristic of the railway ballast are fully considered, and the geogrid reinforcing design method adopting the three-level differential grid density is provided, namely, the grid density of the sleeper core and the ballast shoulder area is high, and the grid density of the under-rail area is low; and the long-term dynamic stability and durability of the ballast bed can be improved.
本发明涉及一种用于碎石道床加固的土工格栅，该土工格栅铺设在路基底层上的道砟层上，土工格栅在不同的道床横向区域内的网格密度不同，相邻两个不同网格密度的土工格栅区域间通过连接棒或整体一次成型相互连接，土工格栅还受道砟层和轨枕埋置，依据道砟细观运动和受力的联动关系以及道砟横向迁移特征，土工格栅分为枕心区、轨下区和砟肩区。与现有技术相比，本发明充分考虑了道砟细观运动和受力的联动关系以及道砟横向迁移特征，提出了采用三级差异化格栅密度的土工格栅加固设计方法，即枕心和砟肩区域的格栅密度较高、轨下区域的格栅密度较低，有助于改善碎石道床的长期动力稳定性和耐久性。
Geogrid for reinforcing ballast bed
一种用于碎石道床加固的土工格栅
FU LONGLONG (Autor:in) / ZHOU SHUNHUA (Autor:in) / WANG BINGLONG (Autor:in) / QIU YONGJIA (Autor:in) / ZHENG YUEZHEN (Autor:in) / DAI NING (Autor:in) / JIANG HAIBO (Autor:in) / YE WEITAO (Autor:in)
28.04.2023
Patent
Elektronische Ressource
Chinesisch
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