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Field Monitoring and Analysis of the Influence of Shield Tunnelling for the Huangzhou Metro on Existing Buildings
(1Department of Civil Engineering, Zhejiang University City College, Hangzhou310015; 2 Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong999077)
Abstract Using the double-tube shield tunnelling of Hangzhou Metro Line 1 that passes beneath buildings as an example, field monitoring was performed and relevant analyses were made regarding the measured settlements of existing buildings and ground surface in combination with shield driving parameters; the settlement rules of different positions and buildings induced by the double-tube shield tunnel construction were researched. The results show that: 1) building settlement can be effectively controlled by managing the volumes of grouting and soil extraction; 2) the larger the base area of a building, the more variable the settlement curve of the monitoring point, which requires strict control of the construction process; and 3) the closer the horizontal distance between the buildings and tunnel axis, the more approximate is the settlement rule of the monitoring point to that of the ground surface above the axis.
Abstract：
Using the double-tube shield tunnelling of Hangzhou Metro Line 1 that passes beneath buildings as an example, field monitoring was performed and relevant analyses were made regarding the measured settlements of existing buildings and ground surface in combination with shield driving parameters; the settlement rules of different positions and buildings induced by the double-tube shield tunnel construction were researched. The results show that: 1) building settlement can be effectively controlled by managing the volumes of grouting and soil extraction; 2) the larger the base area of a building, the more variable the settlement curve of the monitoring point, which requires strict control of the construction process; and 3) the closer the horizontal distance between the buildings and tunnel axis, the more approximate is the settlement rule of the monitoring point to that of the ground surface above the axis.
WEI ,
GANG 1,
YE etc
.Field Monitoring and Analysis of the Influence of Shield Tunnelling for the Huangzhou Metro on Existing Buildings[J] MODERN TUNNELLING TECHNOLOGY, 2015,V52(3): 150-159
2015, Vol. 52 