Analysis of the field monitoring data on soil movements and adjacent building settlement due to shield tunnelling

Abstract

Purpose The shield tunnels closely constructed near the foundations have an inevitable influence on the structures, even results in the large settlement or uplift of the structures. Design/methodology/approach The comparison of structural deformation of three different foundations is presented based on the field monitoring data. Findings Shield tunnelling parameters vary for the different types of foundations. For the long pile foundations, the recommended speed is 3 to 4 cm/min, the grouting pressure is about 0.3 MPa and the grouting rate ranges from 150 to 180. Originality/value The study based on the field monitoring data is rarely reported, especially the topic about the structural deformation of different types of the foundations.

Deformation Characteristics of Existing Twin Tunnels Induced by Double Shield Undercrossing with Prereinforcement: A Case Study in Hangzhou

“…After the shield tail was discharged from the concrete wall, the grouting volume was adjusted to 3∼3.5 m 3 , the filling rate of grouting was 181%∼212%, and the grouting pressure was 0.22∼0.35 MPa. At this time, the earth chamber pressure was set at 0.22∼0.29 MPa, the total thrust was about 13500∼15500 kN, the cutter head torque was about 1450∼1550 kN•m, the driving speed was controlled at 15 mm/ min, and the soil discharged per ring was about 40 m 3 .…”

“…With the continuous advancement of urbanization, the metro system in Chinese major cities is developing rapidly, and the new shield tunnel crossing the existing metro tunnel is increasing frequently [1][2][3][4]. Especially in the city, underground space is increasingly complex nowadays, and the dangerous conditions such as small clearance, narrow space, and multiline staggered bring new challenges to shield crossing construction [5][6][7].…”

Research and Application of Intelligent Monitoring System Platform for Safety Risk and Risk Investigation in Urban Rail Transit Engineering Construction

“…Based on the shortcomings of current risk management system, Gu et al [18] constructed a risk management system according to the closed-loop management theory which classifies risk in accordance with level, grade, and profession and proposed a six-link closed-loop management model. In addition, Tianjin, Nanning, Shenyang, Hefei, and other places have also carried out the research and application of the safety risk management information system for the construction of rail transit projects [19][20][21][22][23][24][25].…”

Effects of Different Construction Sequences on Ground Surface Settlement and Displacement of Single Long Pile due to Twin Paralleled Shield Tunneling

“…In order to understand the pile-soil-tunnel interaction mechanism, many scholars have conducted centrifuge model tests and field measurement analysis [9][10][11][12][13]. Franza and Marshall [11] presented outcomes from 24 geotechnical centrifuge tests and investigated the global tunnel-piled frame interaction scenario by using a newly developed realtime hybrid testing technique.…”