›› 2012, Vol. 33 ›› Issue (11): 3213-3218.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of creep model of structural soft dredger fill

YANG Ai-wu1, 2，YAN Shu-wang3，DU Dong-ju1, 2   

  1. 1. Department of Civil Engineering, Tianjin Institute of Urban Construction, Tianjin 300381, China; 2. Key Laboratory of Soft Soil Engineering Character and Engineering Environment of Tianjin, Tianjin Institute of Urban Construction, Tianjin 300381, China; 3. School of Civil Engineering, Tianjin University, Tianjin 300381, China
  • Received:2011-09-15 Online:2012-11-12 Published:2012-11-14

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Abstract: The basic characteristics and creep properties of undisturbed and remolded soft dredger fills treated by vacuum preloading from reclamation site in Binhai New Area of Tianjin, are studied. The results show that the soft dredger fill treated by vacuum preloading not only has structural characteristics but also has creep properties; the structural characteristics play a very important role in creep properties of the soil. Through updating the modified Cambridge model, it can consider the impact of structural characteristics; then making it as yield function of creep model, a semi-empirical and semi-theoretical creep model considering the impact of structural characteristics is established. The calculated results show that this model fits the fact of structural soft dredger fill, so it can be put into engineering practice.

Key words: soft dredger fill, structure, structure yield stress, creep model

CLC Number: 

  • TU 447
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