›› 2006, Vol. 27 ›› Issue (S1): 606-610.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on longitudinal effect of three-tube parallel shield tunnel approaching constructed by centrifugal model test

LI Shu-feng1, QIU Wen-ge 2, ZHENG Yu-chao2   

  1. 1.The Fourth Survey and Design Institute of China Railway, Wuhan 430063, China; 2.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2006-04-28 Published:2006-12-15

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Abstract: Based on the three-tube parallel shield tunnel that cuts through under Hu-Hang Railway of R413 bid segment of the 9th route of Shanghai track traffic, two groups of centrifugal model tests ,with one group with stratum reinforced and another not, have been done by the method of simulating stratum loss. The longitudinal effect regularity of lining inner force caused by three-tube parallel shield tunnel approaching constructed, has been studiced. The test result shows that the moment of flexion and axial force appear major change at arch lumbus of the left and right tunnel lining when the middle tunnel constructed. The longitudinal effect can be controlled effetely by stratum reinforcement but the influence also should be paid attention to. In the process of construction such method as strengthen slip casting and install longitudinal steel frame can be used for decreasing the influence on the lining duct piece especially on the joint caused by the longitudinal effect.

Key words: centrifugal model test, shield tunnel, longitudinal effect, stratum loss, three-tube parallel

CLC Number: 

  • TU 443
  • 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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