Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-floating system of existing subway structure and construction method thereof
The invention relates to an anti-floating system of an existing subway structure and a construction method thereof, and belongs to the technical field of rail transit. The anti-floating system comprises a soil body reinforcing area arranged on the outer side of the wall face of a subway tunnel, N vertically-arranged uplift piles are arranged in the soil body reinforcing area, the tops of the N uplift piles are connected through anti-floating beams to form a grid structure, a box culvert bottom plate is arranged on the top of the soil body reinforcing area, and the box culvert bottom plate and the grid structure are connected together. The anti-floating system is gradually formed in the construction stage, the box culvert bottom plate is used as an anti-floating plate, buoyancy borne by the subway structure is counteracted through the dead weight of the box culvert bottom plate and the side friction resistance of the uplift piles, and the problem that the anti-floating bearing capacity of the existing subway structure is insufficient due to construction excavation of a newly-built box culvert is innovatively solved.
本发明涉及一种既有地铁结构抗浮体系及其施工方法，属于轨道交通技术领域，该抗浮体系包括设置在地铁隧道壁面外侧的土体加固区，在所述土体加固区内设有N根竖直设置的抗拔桩，N根抗拔桩的顶部通过抗浮梁相连接形成网格结构，在所述土体加固区的顶部设有箱涵底板，所述箱涵底板与所述网格结构连接在一起。通过施工阶段逐步形成的抗浮体系，将箱涵底板兼做抗浮板，通过箱涵底板的自重以及抗拔桩侧摩阻力来抵消地铁结构所受到的浮力，创新性地解决了由于新建箱涵施工开挖造成的既有地铁结构抗浮承载力不足的问题。
Anti-floating system of existing subway structure and construction method thereof
The invention relates to an anti-floating system of an existing subway structure and a construction method thereof, and belongs to the technical field of rail transit. The anti-floating system comprises a soil body reinforcing area arranged on the outer side of the wall face of a subway tunnel, N vertically-arranged uplift piles are arranged in the soil body reinforcing area, the tops of the N uplift piles are connected through anti-floating beams to form a grid structure, a box culvert bottom plate is arranged on the top of the soil body reinforcing area, and the box culvert bottom plate and the grid structure are connected together. The anti-floating system is gradually formed in the construction stage, the box culvert bottom plate is used as an anti-floating plate, buoyancy borne by the subway structure is counteracted through the dead weight of the box culvert bottom plate and the side friction resistance of the uplift piles, and the problem that the anti-floating bearing capacity of the existing subway structure is insufficient due to construction excavation of a newly-built box culvert is innovatively solved.
本发明涉及一种既有地铁结构抗浮体系及其施工方法，属于轨道交通技术领域，该抗浮体系包括设置在地铁隧道壁面外侧的土体加固区，在所述土体加固区内设有N根竖直设置的抗拔桩，N根抗拔桩的顶部通过抗浮梁相连接形成网格结构，在所述土体加固区的顶部设有箱涵底板，所述箱涵底板与所述网格结构连接在一起。通过施工阶段逐步形成的抗浮体系，将箱涵底板兼做抗浮板，通过箱涵底板的自重以及抗拔桩侧摩阻力来抵消地铁结构所受到的浮力，创新性地解决了由于新建箱涵施工开挖造成的既有地铁结构抗浮承载力不足的问题。
Anti-floating system of existing subway structure and construction method thereof
一种既有地铁结构抗浮体系及其施工方法
YU ZENGMING (Autor:in) / TIAN JUNHONG (Autor:in) / LI PENGFEI (Autor:in) / ZHANG YI (Autor:in) / ZHENG MINGWAN (Autor:in) / JIA DONG (Autor:in) / ZHUANG QIANGUO (Autor:in) / XIE LEI (Autor:in) / LI LINCONG (Autor:in) / LIU SONG (Autor:in)
16.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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