›› 2006, Vol. 27 ›› Issue (8): 1411-1415.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis and research for uplift mechanism on foundation of transmission line towers in expansive soil

SU Hui1, LI Qing-fu2, LI Yan-jun1   

  1. 1. Hebei University of Engineering, Handan 056038, China; 2. Zhengzhou University, Zhengzhou 450002, China
  • Received:2004-10-25 Online:2006-08-10 Published:2013-11-26

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Abstract: On the base of the uplift model tests and prototype tests on foundation of transmission line tower, the uplift performance of expansive soil is deeply researched. The regularity of soil displacement, stress distribution, load capacity, failure mechanism were analyzed. The defect of existing uplift theory and calculation in clay is pointed out; this is that the failure of the soil is not only existing in cracking surface, but also existing entire soil body. Thus the composing of uplift bearing capacity is put forward that it is consisted of base weight, earth mass weight above the base, shear strength in the failure soil, and foundation bearing capacity caused by stress re-distribution owing to soil compressed; and then the FEM software is used for the analysis and validation. Finally, scale effect in the model tests is discussed.

Key words: expansive soil, uplift bearing capacity, prototype test, FEM

CLC Number: 

  • TU 441
  • 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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