A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Subway underpass underground space protection structure in soft soil stratum and construction method
The invention relates to a subway underpass underground space protection structure in a soft soil stratum and a construction method. A foundation pit is arranged on a tunnel line which is planned in advance, and the subway underpass underground space protection structure comprises a reinforcing structure positioned in the foundation pit; the reinforcing structure comprises a bottom plate positioned at the pit bottom of the foundation pit, engineering piles positioned below the bottom plate and a continuous underground diaphragm wall arranged along the periphery of the inner side wall of the foundation pit; the lower portion of the underground diaphragm wall is further connected with a tunneling crushing part, the rigidity of the underground diaphragm wall is higher than that of the tunneling crushing part, and the strength of the tunneling crushing part is larger than that of a soil body; and the tunnel line is positioned on the tunneling crushing part and penetrates through the tunneling crushing part. The subway underpass underground space protection structure has the effects that the utilization rate of land parcels on the upper portion of the subway tunnel line is increased, and meanwhile the stability of the structure above the tunnel line is improved.
本发明涉及一种软土地层中地铁下穿地下空间保护结构及施工方法，位于预先规划完成后的隧道线上设置基坑，包括位于基坑内的加固结构，加固结构包括位于基坑坑底的底板、位于底板下方的工程桩以及沿基坑内侧壁一周设置的连续的地下连续墙，所述地下连续墙的下部还连接有掘进破碎部，所述地下连续墙的刚度高于掘进破碎部的刚度，掘进破碎部的强度大于土体的强度，隧道线位于掘进破碎部上并且穿过掘进破碎部设置。本发明具有在增加地铁隧道线路上部地块的利用率同时，提高隧道线上方结构的稳定性的效果。
Subway underpass underground space protection structure in soft soil stratum and construction method
The invention relates to a subway underpass underground space protection structure in a soft soil stratum and a construction method. A foundation pit is arranged on a tunnel line which is planned in advance, and the subway underpass underground space protection structure comprises a reinforcing structure positioned in the foundation pit; the reinforcing structure comprises a bottom plate positioned at the pit bottom of the foundation pit, engineering piles positioned below the bottom plate and a continuous underground diaphragm wall arranged along the periphery of the inner side wall of the foundation pit; the lower portion of the underground diaphragm wall is further connected with a tunneling crushing part, the rigidity of the underground diaphragm wall is higher than that of the tunneling crushing part, and the strength of the tunneling crushing part is larger than that of a soil body; and the tunnel line is positioned on the tunneling crushing part and penetrates through the tunneling crushing part. The subway underpass underground space protection structure has the effects that the utilization rate of land parcels on the upper portion of the subway tunnel line is increased, and meanwhile the stability of the structure above the tunnel line is improved.
本发明涉及一种软土地层中地铁下穿地下空间保护结构及施工方法，位于预先规划完成后的隧道线上设置基坑，包括位于基坑内的加固结构，加固结构包括位于基坑坑底的底板、位于底板下方的工程桩以及沿基坑内侧壁一周设置的连续的地下连续墙，所述地下连续墙的下部还连接有掘进破碎部，所述地下连续墙的刚度高于掘进破碎部的刚度，掘进破碎部的强度大于土体的强度，隧道线位于掘进破碎部上并且穿过掘进破碎部设置。本发明具有在增加地铁隧道线路上部地块的利用率同时，提高隧道线上方结构的稳定性的效果。
Subway underpass underground space protection structure in soft soil stratum and construction method
一种软土地层中地铁下穿地下空间保护结构及施工方法
GONG HUAN (author) / SHEN SHIZHAO (author) / ZHANG QIANG (author) / AI ZHOUYANG (author) / ZHENG LI (author) / XU LIN (author) / ZOU WEIHONG (author) / HONG WEIXIANG (author)
2020-10-20
Patent
Electronic Resource
Chinese
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