›› 2006, Vol. 27 ›› Issue (6): 995-999.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on calculation for shield tunneling-induced ground movements in clays

WEI Gang1, WEI Xin-jiang1, GONG Ci2, DING Zhi1   

  1. 1. Department of Civil Engineering, Zhejiang University City College, Hangzhou 310015, China; 2. Administrant Department of Suzhou Highway, Suzhou 215007, China
  • Received:2004-08-30 Online:2006-06-10 Published:2013-11-14

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Abstract: The extent of soil disturbance induced by shield tunneling construction is analyzed. It is considered that the assumed boundary condition of ground loss in Loganathan’s formula exists error based on the principle of limit equilibrium. The influence of internal friction angle on ground movements is taken into account. It is considered that the level obliquity about boundary line of the vertical ground formation region should be (45°+? /2), but not 45°. The modified Loganathan’s formula is presented, which is only applicable under the undrained condition in clays. At the same time, the calculation for the extent of the cut disturbance of shield is advanced for the first time. As shown by analytical calculation for a project case, the proposed new approach tends to decrease the width of surface settlement troughs and horizontal ground displacements; and the results are more accordant with the field observations when compared with results of Loganathan’s formula.

Key words: shield tunneling, disturbance of soil, ground movements, settlement, ground loss

CLC Number: 

  • U 45
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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