Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Treatment method for running metro underground excavation station ballast bed upheaval
The invention discloses a treatment method for a ballast bed upheaval of an underground excavation station of an operating metro. A plurality of anchoring holes and drainage holes are formed in a ballast bed upheaval affected area, anchor rods are arranged in the anchoring holes, grouting is conducted in the anchoring holes, and finally the ballast bed is anchored through the formed anti-floating anchor rods. The anchor rod comprises a twisted steel bar for prestressed concrete, the diameter of the twisted steel bar for prestressed concrete is 40 mm, a conical centering loader is connected to the twisted steel bar for prestressed concrete, and a spiral stirrup is arranged at the position, corresponding to a ballast bed, of the top end of the twisted steel bar for prestressed concrete. And at least two water-stopping rings which expand when meeting water are arranged on the twisted steel for the prestressed concrete and correspond to the position between the ballast bed and the backfill layer and the position between the backfill layer and the secondary lining concrete. The track ballast bed can be effectively anchored through the formed anti-floating anchor rod, so that the track ballast bed, a station bottom plate and a stratum rock mass are connected into a whole, and the problems that the bottom of the ballast bed is void in the later period of subway operation, a large amount of water is drained in a station for a long time, and the operation safety risk is large can be effectively solved.
本发明公开了一种用于运营地铁暗挖车站道床隆起的治理方法。其在道床隆起影响区域设置若干锚固孔和泄水孔，在锚固孔内设置锚杆，向锚固孔内灌浆，最终通过形成的抗浮锚杆将道床锚固；锚杆包括一根直径为40mm的预应力混凝土用螺纹钢筋，预应力混凝土用螺纹钢筋上连接有锥形对中承载器，预应力混凝土用螺纹钢筋的顶端对应于道床位置设置有螺旋箍筋，预应力混凝土用螺纹钢筋上至少在对应于道床与回填层之间的位置、回填层与二衬混凝土之间的位置设置两道止水遇水膨胀止水环。通过形成的抗浮锚杆可有效将轨道道床锚固，使轨道道床、车站底板及地层岩体连为一个整体，可有效解决地铁运营后期道床底部脱空、车站内长期大体量排水、运营安全风险大等问题。
Treatment method for running metro underground excavation station ballast bed upheaval
The invention discloses a treatment method for a ballast bed upheaval of an underground excavation station of an operating metro. A plurality of anchoring holes and drainage holes are formed in a ballast bed upheaval affected area, anchor rods are arranged in the anchoring holes, grouting is conducted in the anchoring holes, and finally the ballast bed is anchored through the formed anti-floating anchor rods. The anchor rod comprises a twisted steel bar for prestressed concrete, the diameter of the twisted steel bar for prestressed concrete is 40 mm, a conical centering loader is connected to the twisted steel bar for prestressed concrete, and a spiral stirrup is arranged at the position, corresponding to a ballast bed, of the top end of the twisted steel bar for prestressed concrete. And at least two water-stopping rings which expand when meeting water are arranged on the twisted steel for the prestressed concrete and correspond to the position between the ballast bed and the backfill layer and the position between the backfill layer and the secondary lining concrete. The track ballast bed can be effectively anchored through the formed anti-floating anchor rod, so that the track ballast bed, a station bottom plate and a stratum rock mass are connected into a whole, and the problems that the bottom of the ballast bed is void in the later period of subway operation, a large amount of water is drained in a station for a long time, and the operation safety risk is large can be effectively solved.
本发明公开了一种用于运营地铁暗挖车站道床隆起的治理方法。其在道床隆起影响区域设置若干锚固孔和泄水孔，在锚固孔内设置锚杆，向锚固孔内灌浆，最终通过形成的抗浮锚杆将道床锚固；锚杆包括一根直径为40mm的预应力混凝土用螺纹钢筋，预应力混凝土用螺纹钢筋上连接有锥形对中承载器，预应力混凝土用螺纹钢筋的顶端对应于道床位置设置有螺旋箍筋，预应力混凝土用螺纹钢筋上至少在对应于道床与回填层之间的位置、回填层与二衬混凝土之间的位置设置两道止水遇水膨胀止水环。通过形成的抗浮锚杆可有效将轨道道床锚固，使轨道道床、车站底板及地层岩体连为一个整体，可有效解决地铁运营后期道床底部脱空、车站内长期大体量排水、运营安全风险大等问题。
Treatment method for running metro underground excavation station ballast bed upheaval
一种用于运营地铁暗挖车站道床隆起的治理方法
ZHOU XIANGDONG (Autor:in) / LI ZHIZHENG (Autor:in) / WANG JIANFEI (Autor:in) / LAN GONGYAO (Autor:in) / FENG XINGHUI (Autor:in) / JING YONGJUN (Autor:in) / LI PENG (Autor:in) / JIAO NIANHUI (Autor:in) / ZHU JINGMING (Autor:in) / WANG CHEN (Autor:in)
03.01.2025
Patent
Elektronische Ressource
Chinesisch
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