A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ballastless track gap repairing method
The invention discloses a ballastless track open joint repairing method which comprises the steps that holes are distributed in a plum blossom shape in the laying direction of a track plate at the position away from reinforcing steel bars, the holes penetrate through the track plate to the surface of a filling layer, and a plurality of grouting holes are formed; edge sealing treatment is conducted on the open joint through an edge sealing piece, and a plurality of exhaust holes are formed at intervals; a grouting pipe is inserted into the grouting hole, and a flexible cement-based grouting material with the mechanical property similar to that of the raw material of the filling layer is poured into the open joint through the grouting pipe in a hole jumping grouting mode; after the flexible cement-based grouting material is hardened, the grouting pipe and the edge sealing piece are dismantled; and the grouting holes are cleaned, and a high-strength micro-expansive cement-based material with the mechanical property similar to that of the track plate is poured into the grouting holes. According to the method, the flexible cement-based material which is similar to an original filling layer in performance, good in bonding performance, low in elasticity modulus, equivalent in mechanical property and similar to matrix components is injected from the track plate face, on one hand, it is guaranteed that grouting in the gap is full, and on the other hand, the service performance of the ballastless track filling layer can be effectively improved.
本发明公开了一种无砟轨道离缝修复方法，包括在避开钢筋的位置，沿轨道板铺设方向呈梅花状布孔且打孔穿过轨道板至充填层表面，形成多个注浆孔；通过封边件对离缝进行封边处理并间隔设置多个排气孔；在注浆孔内插入注浆管并以跳孔注浆方式通过注浆管向离缝灌注与充填层原材料力学性能相近的柔性水泥基注浆材料；待柔性水泥基注浆材料硬化后，拆除注浆管和封边件；对注浆孔进行清理并向注浆孔内灌注与轨道板力学性能相近的高强微膨胀水泥基材料。本发明通过采用从轨道板面注入与原充填层性能接近、粘结性能较好、弹性模量较低、力学性能相当、基体成分相近的柔性水泥基材料，一方面确保离缝内注浆饱满，另一方面可有效提升无砟轨道充填层服役性能。
Ballastless track gap repairing method
The invention discloses a ballastless track open joint repairing method which comprises the steps that holes are distributed in a plum blossom shape in the laying direction of a track plate at the position away from reinforcing steel bars, the holes penetrate through the track plate to the surface of a filling layer, and a plurality of grouting holes are formed; edge sealing treatment is conducted on the open joint through an edge sealing piece, and a plurality of exhaust holes are formed at intervals; a grouting pipe is inserted into the grouting hole, and a flexible cement-based grouting material with the mechanical property similar to that of the raw material of the filling layer is poured into the open joint through the grouting pipe in a hole jumping grouting mode; after the flexible cement-based grouting material is hardened, the grouting pipe and the edge sealing piece are dismantled; and the grouting holes are cleaned, and a high-strength micro-expansive cement-based material with the mechanical property similar to that of the track plate is poured into the grouting holes. According to the method, the flexible cement-based material which is similar to an original filling layer in performance, good in bonding performance, low in elasticity modulus, equivalent in mechanical property and similar to matrix components is injected from the track plate face, on one hand, it is guaranteed that grouting in the gap is full, and on the other hand, the service performance of the ballastless track filling layer can be effectively improved.
本发明公开了一种无砟轨道离缝修复方法，包括在避开钢筋的位置，沿轨道板铺设方向呈梅花状布孔且打孔穿过轨道板至充填层表面，形成多个注浆孔；通过封边件对离缝进行封边处理并间隔设置多个排气孔；在注浆孔内插入注浆管并以跳孔注浆方式通过注浆管向离缝灌注与充填层原材料力学性能相近的柔性水泥基注浆材料；待柔性水泥基注浆材料硬化后，拆除注浆管和封边件；对注浆孔进行清理并向注浆孔内灌注与轨道板力学性能相近的高强微膨胀水泥基材料。本发明通过采用从轨道板面注入与原充填层性能接近、粘结性能较好、弹性模量较低、力学性能相当、基体成分相近的柔性水泥基材料，一方面确保离缝内注浆饱满，另一方面可有效提升无砟轨道充填层服役性能。
Ballastless track gap repairing method
一种无砟轨道离缝修复方法
ZHENG XINGUO (author) / LIU JING (author) / LI SHUMING (author) / JIN HAO (author) / ZHANG CHI (author) / PAN YONGJIAN (author) / LIU XIANGHUI (author) / DOU DONGBIN (author) / ZHANG XU (author) / DENG QINGSHAN (author)
2023-09-29
Patent
Electronic Resource
Chinese
Ballastless track structure foundation settlement repairing method
| European Patent Office | 2022