›› 2008, Vol. 29 ›› Issue (8): 2246-2251.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of additional stresses of soil disturbance induced by propulsion of double-O-tube shield

SUN Tong-li1, 2, ZHANG Qing-he1, WEI Liang-wen1, WU Min-hui1, ZHANG Dong-yin3   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Jiangsu Provincial Communication Planning and Design Institute, Nanjing 210005, China; 3. Shenzhen Construction Quality Supervision Center, Shenzhen 518032, China
  • Received:2006-10-24 Online:2008-08-11 Published:2013-08-02

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Abstract: The additional stresses induced by propulsion of double-o-tube(DOT) shield are calculated by means of the Mindlin’s equations in elasticity. The characteristics of additional stresses and the extent of soil disturbance of DOT shield construction are analyzed with compound Gauss-Legendre integral arithmetic. In the analysis, the excess earth pressure and the lateral friction between shield skin with surrounding soil are taken into account. The outcome makes clear that the soil disturbance of DOT shield has the regional characters, such as drag and extrusion above the sea-gulled segment and extrusion and friction lateral of the shield skin. The lateral friction has more effect on soil disturbance than the excess earth pressure. The conclusion can be as reference for the traversing construction nearby the underground pipeline and the building foundation for DOT shield.

Key words: DOT shield, excess earth pressure, lateral friction, soil disturbance, additional stress

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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