Study on the Long-term Settlement of Subway Tunnel in Soft Soil Area

Jun, Tan; Cui, Zhen-Dong; Li, Yuan

doi:10.1080/1064119x.2015.1030806

Cited by 20 publications

(9 citation statements)

References 23 publications

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“…Some studies have been carried out to investigate the possible causes of large tunnel settlements for the Shanghai metro tunnels (Yu et al 1986;Wang et al 2008). The settlement of a subway tunnel was studied from the theoretical and numerical analyses based on the monitoring data (Tan, Cui, and Yuan 2015). The influence of stiffness anisotropy has been illustrated by many researchers when predicting ground deformations due to the tunnelling (Lee and Rowe 1989;Franzius, Potts, and Burland 2005) and the excavation (Ng, Lee, and Tang 2004;Clayton 2011).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of longitudinal settlement of shield tunnel in the coastal city Shanghai

Cui

Jun

2016

Marine Georesources & Geotechnology

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Downloaded by [George Mason University] at 03:24 05 June 2016 2Up to now more than fourteen subway lines are in operation and some new lines are being built in the coastal city, Shanghai. The longitudinal settlement of shield tunnel has significant effect on the safety of the subway operation. In this paper, the deformation of the shield tunnel and the surrounding soil were analyzed by the establishment of a three-dimensional model. The vertical displacements of four paths (Path 1 is on the ground; Path 2 is at the top of tunnel; Path 3 is in the middle of tunnel; Path 4 is on the bottom of tunnel) are affected by the nature of the soil. The horizontal displacement is smaller than the vertical displacement and horizontal displacement of the clay is larger than that of the sand. The distribution of the pore pressure changes with soil properties around the tunnel. The pore pressure of the sand layer is larger than that of the clay layer at the same depth of underlying soil.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of longitudinal settlement of shield tunnel in the coastal city Shanghai

Cui

Jun

2016

Marine Georesources & Geotechnology

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“…Huang et al [11] used finite element simulation software, through the soil-water full coupling dynamic finite element method, to analyze the settlement of saturated clay soil under trainload. Tan et al [12] conducted a monitoring study on the deformation of subway tunnels and found that there is variability in the amount of settlement in different areas. Di et al [13] conducted a study on the long-term settlement of Nanjing Metro Line 10 and found that the maximum settlement of Metro Line 10 was 240 mm within 5.75 years of completion.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Study of Long-Term Land Subsidence during Subway Operation in High-Density Urban Areas Based on DInSAR-GPS-GIS Technology and Numerical Simulation

Yu¹,

Chen²,

Zou³

et al. 2023

Computer Modeling in Engineering &Amp; Sciences

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During subway operation, various factors will cause long-term land subsidence, such as the vibration subsidence of foundation soil caused by train vibration load, incomplete consolidation deformation of foundation soil during tunnel construction, dense buildings and structures in the vicinity of the tunnel, and changes in water level in the stratum where the tunnel is located. The monitoring of long-term land subsidence during subway operation in high-density urban areas differs from that in low-density urban construction areas. The former is the gathering point of the entire urban population. There are many complex buildings around the project, busy road traffic, high pedestrian flow, and less vegetation cover. Several existing items require monitoring. However, monitoring distance is long, and providing early warning is difficult. This study uses the 2.8 km operation line between Wulin Square station and Ding'an Road station of Hangzhou Subway Line 1 as an example to propose the integrated method of DInSAR-GPS-GIS technology and the key algorithm for long-term land subsidence deformation. Then, it selects multiscene image data to analyze long-term land subsidence of high-density urban areas during subway operation. Results show that long-term land subsidence caused by the operation of Wulin Square station to Ding'an Road station of Hangzhou Subway Line 1 is small, with maximum subsidence of 30.64 mm, and minimum subsidence of 11.45 mm, and average subsidence ranging from 19.27 to 21.33 mm. And FLAC3D software was used to verify the monitoring situation, using the geological conditions of the soil in the study area and the tunnel profile to simulate the settlement under vehicle load, and the simulation results tended to be consistent with the monitoring situation.

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“…The second method (Liu et al 2014) is to obtain the development trend of settlement and deformation based on the existing measured data, and to use appropriate mathematical model to predict the development of settlement after that. Tan et al (2016) studied the settlement of a subway tunnel from the theoretical and numerical analyses based on the monitoring data. Ahangari et al (2015) had applied modern intelligent methods to predict subway settlement.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Prediction of Long-Term Settlement of Metro Shield Tunnel in Saturated Sand

Liu¹,

Yang

2021

Geotech Geol Eng

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based on the existing monitoring data, this paper uses the matured data method to analyze and predict the long-term settlement of the subway shield tunnel, and comprehensively analyzes the long-term settlement of the subway shield tunnel in the saturated sand layer of Zhengzhou. Logical curve model is used. Etc. separately predict the long-term settlement of the Zhengzhou metro shield tunnel, and combine the prediction results to summarize the characteristics of the prediction model to obtain a prediction model suitable for the long-term settlement of the subway shield tunnel in the sandy soil area represented by Zhengzhou, which can be used for the operation of the Zhengzhou subway tunnel. Management and similar engineering projects provide a certain reference basis.

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Study on the Long-term Settlement of Subway Tunnel in Soft Soil Area

Cited by 20 publications

References 23 publications

Numerical simulation of longitudinal settlement of shield tunnel in the coastal city Shanghai

Numerical simulation of longitudinal settlement of shield tunnel in the coastal city Shanghai

Monitoring Study of Long-Term Land Subsidence during Subway Operation in High-Density Urban Areas Based on DInSAR-GPS-GIS Technology and Numerical Simulation

Analysis and Prediction of Long-Term Settlement of Metro Shield Tunnel in Saturated Sand

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