Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for reinforcing subsurface tunnel foundation
The invention discloses a subsurface tunnel foundation reinforcement method, which comprises the following steps of: burying a reserved large pipe during the construction of an initial support inverted arch to facilitate the subsequent micro pile construction, driving a micro pile between every two steel grids, and burying a plurality of reserved pipes in each steel grid to facilitate the subsequent inter-pile construction. Furthermore, the construction sequence of firstly closing the primary supporting inverted arch and then driving the micro piles and the piles between the piles is adopted, and the micro piles are driven at intervals, so that the adverse effects on the tunnel primary supporting structure and the driven piles in the construction process are reduced. The problems that when collapsible loess exists below the bottom plate of the subsurface tunnel, differential settlement of a foundation exists in later operation of the subsurface tunnel, and safety accidents are likely to happen are solved.
本发明公开了一种暗挖隧道地基加固方法，在施工初支仰拱时埋设预留大管以便后续进行微型桩施工，每两榀钢格栅之间打设微型桩，并在每榀钢格栅中埋设多根预留效果以便后续进行桩间桩施工看，进一步的采用先封闭初支仰拱后打微型桩和桩间桩的施工顺序，并间隔打设微型桩，减少施工过程中对隧道初期支护结构及已打设桩的不利影响。本发明解决了在暗挖隧道的底板的下方有湿陷性黄土存在时，暗挖隧道后期运营存在地基不均匀沉降，容易发生安全事故的问题。
Method for reinforcing subsurface tunnel foundation
The invention discloses a subsurface tunnel foundation reinforcement method, which comprises the following steps of: burying a reserved large pipe during the construction of an initial support inverted arch to facilitate the subsequent micro pile construction, driving a micro pile between every two steel grids, and burying a plurality of reserved pipes in each steel grid to facilitate the subsequent inter-pile construction. Furthermore, the construction sequence of firstly closing the primary supporting inverted arch and then driving the micro piles and the piles between the piles is adopted, and the micro piles are driven at intervals, so that the adverse effects on the tunnel primary supporting structure and the driven piles in the construction process are reduced. The problems that when collapsible loess exists below the bottom plate of the subsurface tunnel, differential settlement of a foundation exists in later operation of the subsurface tunnel, and safety accidents are likely to happen are solved.
本发明公开了一种暗挖隧道地基加固方法，在施工初支仰拱时埋设预留大管以便后续进行微型桩施工，每两榀钢格栅之间打设微型桩，并在每榀钢格栅中埋设多根预留效果以便后续进行桩间桩施工看，进一步的采用先封闭初支仰拱后打微型桩和桩间桩的施工顺序，并间隔打设微型桩，减少施工过程中对隧道初期支护结构及已打设桩的不利影响。本发明解决了在暗挖隧道的底板的下方有湿陷性黄土存在时，暗挖隧道后期运营存在地基不均匀沉降，容易发生安全事故的问题。
Method for reinforcing subsurface tunnel foundation
暗挖隧道地基加固方法
LI CAN (Autor:in) / HE SAIJUN (Autor:in) / ZHAO LIANG (Autor:in) / CHAO JUNLIANG (Autor:in) / PENG JIANGTAO (Autor:in) / LIU DINGYUAN (Autor:in) / WANG XI (Autor:in) / FANG ZHUANG (Autor:in) / LIU YONGFEI (Autor:in) / LI HUI (Autor:in)
25.11.2022
Patent
Elektronische Ressource
Chinesisch
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