Abstract The Jing′an Temple Station of Shanghai Metro Line 14 is a project where the main structure of the sub? way station is constructed using the large-section rectangular pipe jacking method. To address the conflicts between underground construction, geological environment, and surrounding buildings in the main structure works of Jing′an Temple Station, this paper proposes a method suitable for the construction of subway stations in saturated soft soil layers in central urban areas using full-face pipe jacking method. Innovatively, the method introduces deep overburden tunnel portal water-stop technology, deep-buried pipe segment selfcompensating anti-retreat technology, soil improvement pipe segment friction reduction-slurry solidification technology, steelconcrete composite pipe jacking segment structure, composite segment steel shell assembly and hoisting technology, and composite segment inner lining casting technology. These innovations overcome engineering challenges such as deep overburden close-spacing pipe jacking advancement and construction of ultra-large section pipe jacking segments in subway station construction, achieving good implementation results and providing references for subway construction in similar strata.
Abstract：
The Jing′an Temple Station of Shanghai Metro Line 14 is a project where the main structure of the sub? way station is constructed using the large-section rectangular pipe jacking method. To address the conflicts between underground construction, geological environment, and surrounding buildings in the main structure works of Jing′an Temple Station, this paper proposes a method suitable for the construction of subway stations in saturated soft soil layers in central urban areas using full-face pipe jacking method. Innovatively, the method introduces deep overburden tunnel portal water-stop technology, deep-buried pipe segment selfcompensating anti-retreat technology, soil improvement pipe segment friction reduction-slurry solidification technology, steelconcrete composite pipe jacking segment structure, composite segment steel shell assembly and hoisting technology, and composite segment inner lining casting technology. These innovations overcome engineering challenges such as deep overburden close-spacing pipe jacking advancement and construction of ultra-large section pipe jacking segments in subway station construction, achieving good implementation results and providing references for subway construction in similar strata.
ZHU Yanfei1 GUO Yan1 WANG Jinyi1 MA Jianfeng2 PAN Weiqiang1
.Research and Application of Full-Face Pipe Jacking Method in Saturated Soft Soil Layers for the Jing′an Temple Station Subway Project[J] MODERN TUNNELLING TECHNOLOGY, 2024,V61(2): 263-271
2024, Vol. 61 