STUDY OF SHIELD CONSTRUCTION INFLUENCES ON MECHANICAL BEHAVIOR OF SOIL AROUND TUNNELING SHIELD

Li Chunlin

doi:10.13204/j.gyjz201312017

Volume 43 Issue 12

Dec. 2014

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Li Chunlin. STUDY OF SHIELD CONSTRUCTION INFLUENCES ON MECHANICAL BEHAVIOR OF SOIL AROUND TUNNELING SHIELD[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 93-97. doi: 10.13204/j.gyjz201312017

Citation:

Li Chunlin. STUDY OF SHIELD CONSTRUCTION INFLUENCES ON MECHANICAL BEHAVIOR OF SOIL AROUND TUNNELING SHIELD[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 93-97. doi: 10.13204/j.gyjz201312017

Li Chunlin. STUDY OF SHIELD CONSTRUCTION INFLUENCES ON MECHANICAL BEHAVIOR OF SOIL AROUND TUNNELING SHIELD[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 93-97. doi: 10.13204/j.gyjz201312017

Citation:

Li Chunlin. STUDY OF SHIELD CONSTRUCTION INFLUENCES ON MECHANICAL BEHAVIOR OF SOIL AROUND TUNNELING SHIELD[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 93-97. doi: 10.13204/j.gyjz201312017

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STUDY OF SHIELD CONSTRUCTION INFLUENCES ON MECHANICAL BEHAVIOR OF SOIL AROUND TUNNELING SHIELD

doi: 10.13204/j.gyjz201312017

Li Chunlin^1,2

1.
1. Institute of Civil Engineering,Tongling University,Tongling 244000,China;
2.
2. Institute of Geotechnical Engineering,Southeast University,Nanjing 210096,China

Received Date: 2013-04-23
Publish Date: 2013-12-20

Abstract

Abstract

Ｒelying on tunnel shield excavation of the Subway Line No. 1 in Wuxi，a series of triaxial tests were performed with different stress path using the undisturbed soil drilled in the construction field in laboratory based on disturbance properties around tunnel. Test results showed that the strength and deformation behavior of soils were highly affected by stress paths. Soil shear strength decreased in turn according to the order of constant stress ratio loading triaxial compression，conventional triaxial compression，axial loading-radial unloading triaxial compression and reduced triaxial compression. The axial strain and soil strength with unloading stress paths were less than those with loading stress paths. In addition，soil shear strength with triaxial compression stress paths was much larger than those obtained through triaxial stretch stress paths.
- tunnel shield,
- stress path,
- construction disturbance,
- mechanical behavior,
- strength,
- strain

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References(12)

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