Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a foundation pit structure above a shallow-buried subway tunnel and a construction method of the foundation pit structure. The foundation pit structure comprises a reinforced soil body, a steel sheet pile, a horizontal support, a middle enclosing purlin, a steel bracket, a monitoring rod and a bearing platform. Soil around the foundation pit is reinforced, steel sheet piles are arranged around the foundation pit and form a circle, the circle of steel sheet piles serve as the side wall of the foundation pit, the soil outside the side wall of the foundation pit is repelled by the circle of steel sheet piles, a circle of middle surrounding purlins located on the same plane are fixed to the steel sheet piles, and the circle of middle surrounding purlins are located in the foundation pit. The middle enclosing purlins are fixed to the steel sheet piles through steel brackets, horizontal supports are arranged in a circle of the middle enclosing purlins and fixed to the middle enclosing purlins, a bearing platform is arranged at the bottom of the foundation pit, and monitoring rods are inserted into the reinforced soil body and located outside the circle defined by the steel sheet piles. The unfavorable geology above the tunnel can be improved, the requirement for newly-built foundation pit excavation is met, convergence deformation of the subway tunnel is small, deformation of the land above the tunnel can be monitored, and the application prospect is good.
本发明公开了一种浅埋地铁隧道上方基坑结构及其施工方法，基坑结构包括加固土体、钢板桩、水平支撑、中间围檩、钢托架、监测杆和承台；基坑周围的土体均已被加固，围绕基坑布置有钢板桩，钢板桩围成一圈，一圈钢板桩作为基坑的侧壁且基坑侧壁外的土体被一圈钢板桩排斥在外，钢板桩上固定有位于同一平面上的一圈中间围檩且一圈中间围檩位于基坑内，中间围檩通过钢托架固定在钢板桩上，一圈中间围檩内设有水平支撑且水平支撑与中间围檩固定，基坑的底部上设有承台，加固土体插设有监测杆且监测杆位于钢板桩围成的圈外。本发明可以改良隧道上方不良地质，满足新建基坑开挖的需要，对地铁隧道收敛变形小，并能监测隧道上方土地变形，应用前景好。
The invention discloses a foundation pit structure above a shallow-buried subway tunnel and a construction method of the foundation pit structure. The foundation pit structure comprises a reinforced soil body, a steel sheet pile, a horizontal support, a middle enclosing purlin, a steel bracket, a monitoring rod and a bearing platform. Soil around the foundation pit is reinforced, steel sheet piles are arranged around the foundation pit and form a circle, the circle of steel sheet piles serve as the side wall of the foundation pit, the soil outside the side wall of the foundation pit is repelled by the circle of steel sheet piles, a circle of middle surrounding purlins located on the same plane are fixed to the steel sheet piles, and the circle of middle surrounding purlins are located in the foundation pit. The middle enclosing purlins are fixed to the steel sheet piles through steel brackets, horizontal supports are arranged in a circle of the middle enclosing purlins and fixed to the middle enclosing purlins, a bearing platform is arranged at the bottom of the foundation pit, and monitoring rods are inserted into the reinforced soil body and located outside the circle defined by the steel sheet piles. The unfavorable geology above the tunnel can be improved, the requirement for newly-built foundation pit excavation is met, convergence deformation of the subway tunnel is small, deformation of the land above the tunnel can be monitored, and the application prospect is good.
本发明公开了一种浅埋地铁隧道上方基坑结构及其施工方法，基坑结构包括加固土体、钢板桩、水平支撑、中间围檩、钢托架、监测杆和承台；基坑周围的土体均已被加固，围绕基坑布置有钢板桩，钢板桩围成一圈，一圈钢板桩作为基坑的侧壁且基坑侧壁外的土体被一圈钢板桩排斥在外，钢板桩上固定有位于同一平面上的一圈中间围檩且一圈中间围檩位于基坑内，中间围檩通过钢托架固定在钢板桩上，一圈中间围檩内设有水平支撑且水平支撑与中间围檩固定，基坑的底部上设有承台，加固土体插设有监测杆且监测杆位于钢板桩围成的圈外。本发明可以改良隧道上方不良地质，满足新建基坑开挖的需要，对地铁隧道收敛变形小，并能监测隧道上方土地变形，应用前景好。
Foundation pit structure above shallow-buried subway tunnel and construction method thereof
一种浅埋地铁隧道上方基坑结构及其施工方法
CAI JING (Autor:in)
10.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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