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A platform for research: civil engineering, architecture and urbanism
Method for controlling vertical deformation of high-speed railway subgrade in shield underneath passing high-speed railway construction
The invention discloses a method for controlling vertical deformation of a high-speed railway roadbed in shield underneath passing high-speed railway construction, which belongs to the technical field of tunnel shield construction and comprises the following steps: assembling a grouting system, arranging a monitoring system and setting monitoring points; calculating a numerical value for lifting the surface layer of the high-speed railway roadbed; embedding a grouting bag; the grouting system is linked with the monitoring system; grouting process control is conducted, specifically, grouting equipment is started step by step through dynamic control of lifting along with sinking, and after the whole shield tunneling machine passes through the high-speed rail roadbed and the bag expansion lifting effect meets the expected requirement, solidification type grout is adopted to replace non-solidification type grout in the bag; and when the slurry in the bag is solidified, the active control process is ended. The capsule type active control technology is adopted, and fixed-point and directional compensation lifting grouting is accurately achieved through a monitoring-grouting construction linkage working mechanism; the manufacturing process is simple, arrangement is flexible, measurement and control integration is achieved, pollution to the soil body is avoided, directional, positioned and quantitative refined deformation control over the soil body is achieved, and stress compensation is dynamically achieved.
本发明公开了一种盾构下穿高速铁路施工高铁路基竖向变形控制方法，属于隧道盾构施工技术领域，包括以下步骤：组装注浆系统、布置监测系统并设置监测点；计算需对高铁路基表层抬升的数值；埋置注浆囊袋；注浆系统与监测系统的联动；注浆过程控制，通过“随沉随抬”动态控制，逐步启动注浆设备，待盾构机全部通过高铁路基，待囊袋膨胀抬升效果满足预期要求后，采用凝固型浆液替换囊袋内的非凝型浆液；待囊袋中的浆液凝固，主动控制过程结束。本发明采用胶囊式主动控制技术，通过监测‑注浆施工联动工作机制，精准做到定点定向补偿抬升注浆；制作工艺简单、布置灵活、实现测控一体化，且不会对土体造成污染，对土体实现定向、定位、定量的精细化变形控制，动态实现应力补偿。
Method for controlling vertical deformation of high-speed railway subgrade in shield underneath passing high-speed railway construction
The invention discloses a method for controlling vertical deformation of a high-speed railway roadbed in shield underneath passing high-speed railway construction, which belongs to the technical field of tunnel shield construction and comprises the following steps: assembling a grouting system, arranging a monitoring system and setting monitoring points; calculating a numerical value for lifting the surface layer of the high-speed railway roadbed; embedding a grouting bag; the grouting system is linked with the monitoring system; grouting process control is conducted, specifically, grouting equipment is started step by step through dynamic control of lifting along with sinking, and after the whole shield tunneling machine passes through the high-speed rail roadbed and the bag expansion lifting effect meets the expected requirement, solidification type grout is adopted to replace non-solidification type grout in the bag; and when the slurry in the bag is solidified, the active control process is ended. The capsule type active control technology is adopted, and fixed-point and directional compensation lifting grouting is accurately achieved through a monitoring-grouting construction linkage working mechanism; the manufacturing process is simple, arrangement is flexible, measurement and control integration is achieved, pollution to the soil body is avoided, directional, positioned and quantitative refined deformation control over the soil body is achieved, and stress compensation is dynamically achieved.
本发明公开了一种盾构下穿高速铁路施工高铁路基竖向变形控制方法，属于隧道盾构施工技术领域，包括以下步骤：组装注浆系统、布置监测系统并设置监测点；计算需对高铁路基表层抬升的数值；埋置注浆囊袋；注浆系统与监测系统的联动；注浆过程控制，通过“随沉随抬”动态控制，逐步启动注浆设备，待盾构机全部通过高铁路基，待囊袋膨胀抬升效果满足预期要求后，采用凝固型浆液替换囊袋内的非凝型浆液；待囊袋中的浆液凝固，主动控制过程结束。本发明采用胶囊式主动控制技术，通过监测‑注浆施工联动工作机制，精准做到定点定向补偿抬升注浆；制作工艺简单、布置灵活、实现测控一体化，且不会对土体造成污染，对土体实现定向、定位、定量的精细化变形控制，动态实现应力补偿。
Method for controlling vertical deformation of high-speed railway subgrade in shield underneath passing high-speed railway construction
盾构下穿高速铁路施工高铁路基竖向变形控制方法
SUN TIECHENG (author) / WANG AIYU (author) / WU XINLIU (author) / ZHANG CHUNLEI (author) / SUO XIAOMING (author) / ZHOU WEI (author) / WEN JIZHOU (author) / DU ZHITIAN (author) / LIN JIAZHEN (author) / YUE ZURUN (author)
2023-01-03
Patent
Electronic Resource
Chinese
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