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논문 기본 정보

자료유형
학술저널
저자정보
Jianwei Jia (China Construction Sixth Engineering Bureau Co. Ltd.) Ruiqi Gao (China Construction Sixth Engineering Bureau Co. Ltd.) Defeng Wang (Technical University of Freiberg) Jianjun Li (China Construction Sixth Engineering Bureau Co. Ltd.) Ziwen Song (China Construction Sixth Engineering Bureau Co. Ltd.) Jinghui Tan (China Construction Sixth Engineering Bureau Co. Ltd.)
저널정보
국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.84 No.5
발행연도
2022.12
수록면
699 - 706 (8page)

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Settlement control techniques are critical for the safety of shield tunnel constructions, especially for facing complex situations. In this study, the shield tunnel structure from Huaita east road station to Heping Road station in Xuzhou metro No.3 line (China) is taken as engineering background, which has various complex problems of the upper-soft and lower-hard composite stratum conditions, twin curve shield tunnels, and underpass the foundation of the piled raft. The deformation characteristics of shield tunnelling passing through buildings are explored. Subsequently, comprehensive research methods of numerical simulation and field measurement are adopted to analyzing the effectiveness of settlement control by using the top grouting technique. The results show that the settlement of the buildings has obvious spatial characteristics, and the hysteresis effect can be obviously observed in soil deformation caused by shield construction. Meanwhile, the two shield constructions can cause repeated disturbances, reducing the soil deformation's hysteresis effect. Moreover, the shield tunnel's differential settlement is too large when a single line passes through, and the shield construction of the outer curve can cause more significant disturbance in the tunnel than the inside curve. Notably, the proposed process control parameters and secondary topgrouting method can effectively control the deformation of the shield tunnel, especially for the long-term deformation.

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