STUDY ON CALCULATION FOR WIDTH PARAMETER OF SURFACE SETTLEMENT TROUGH INDUCED BY SHIELD TUNNEL

Wei Gang

doi:10.13204/j.gyjz200912019

Volume 39 Issue 12

Dec. 2014

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Wei Gang. STUDY ON CALCULATION FOR WIDTH PARAMETER OF SURFACE SETTLEMENT TROUGH INDUCED BY SHIELD TUNNEL[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(12): 74-79. doi: 10.13204/j.gyjz200912019

Citation:

Wei Gang. STUDY ON CALCULATION FOR WIDTH PARAMETER OF SURFACE SETTLEMENT TROUGH INDUCED BY SHIELD TUNNEL[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(12): 74-79. doi: 10.13204/j.gyjz200912019

Wei Gang. STUDY ON CALCULATION FOR WIDTH PARAMETER OF SURFACE SETTLEMENT TROUGH INDUCED BY SHIELD TUNNEL[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(12): 74-79. doi: 10.13204/j.gyjz200912019

Citation:

Wei Gang. STUDY ON CALCULATION FOR WIDTH PARAMETER OF SURFACE SETTLEMENT TROUGH INDUCED BY SHIELD TUNNEL[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(12): 74-79. doi: 10.13204/j.gyjz200912019

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STUDY ON CALCULATION FOR WIDTH PARAMETER OF SURFACE SETTLEMENT TROUGH INDUCED BY SHIELD TUNNEL

doi: 10.13204/j.gyjz200912019

Wei Gang

1.
Department of Civil Engineering,City College,Zhejiang University,Hangzhou 310015,China

Received Date: 2009-06-08
Publish Date: 2009-12-20

Abstract

Abstract

The value of width parameter i of surface settlement trough induced by shield tunnel is related to tunnel radius R,tunnel axis depth h,and soil condition(internal friction angle of soil).The analyses of 22 actual values from 13 constructional cases show that value of i is linear with [R+htan〔45-/2〕].20 values of i/[R+htan〔45-/2〕] are in the range of [0.45,0.50].Only 2 values(0.43,0.51) are beyond but close to the bounds,generally within 10% difference.The values of i is linear with h,but their dispersion is great.The values of i/h are in the range of [0.37,0.66] for cohesive soil.The result shows that the contribution of relationship curve of i/R values with h/(2R) values obtained from exponential function fitting is better than that obtained from power function fitting,but the scope of empirical parameter range is large.Based on the above-mentioned results,new calculation method for i is put forward.This method is applicable in cohesive soil,and R,h and are taken into account.The possible error induced by large scope of empirical parameters range is avoided because of small parameter range in this method.
- shield tunnel,
- surface settlement,
- Peck equation,
- width parameters of settlement trough

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References(33)

References

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