›› 2000, Vol. 21 ›› Issue (3): 213-216.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Stability analysis of the up-stream lock head of Three Gorges ship lift

QIAN Xiang-dong1 , FU Zuo-xin1 , NIU Xin-qiang2 , ZHU Hong2   

  1. 1 . College of Civil Engineering, Hohai University, Nanjing 210098 , China) ( 2.Design Institute of Changjiang Water Resources Co mission , Wuhan 430010 , China
  • Received:1999-10-12 Online:2000-09-21 Published:2016-12-26

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Abstract: The stability of the up-stream lock head of Three Gorges ship lift is analyzed with elasto-plastic limit equilibrium method in which the critical instability state is defined as the state where the plastic zone runs through the rock foundation , and the pre-determined sliding surface is unnecessary. The limit equilibrium state is approximated stepwise with decrement of material strength. The construction sequence is taken into account in the study , and the stresses of rock after excavation are treated as initial stresses when reloaded . And because of the consolidation grouting in rock after excavation , rock reloading begins in elastic state. Results show that the safety factor of stability of the up-stream lock head is 3. 3.

Key words: lock head ;rock foundation , stability , elasto-plasticity , limit equilibrium

CLC Number: 

  • T U 457
  • 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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