›› 2009, Vol. 30 ›› Issue (1): 143-146.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Elastoplastic finite element analysis of nanometer silicon and cement-stabilized soils

WANG Li-feng1, HUANG Hong-mian2   

  1. 1. Department of Civil Engineering, Zhejiang University of Science and Technology, Hangzhou 310012, China; 2. Rui’an Planning and Construction Bureau of Zhejiang Province, Rui’an 325200, China
  • Received:2006-11-27 Online:2009-01-10 Published:2011-01-14

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Abstract:

Tests show adding propriety nanometer silicon to cement-stabilized soils can improve compressive strength of cement-stabilized soils greatly. Based on tests, constitutive model of nanometer silicon and cement-stabilized soils is proposed by using the yield criterion attained by tests, related flow rules and plastic work hardening rules. The authors deduce finite element equations in conditions of spatial axisymmetry applying means of incremental stiffness by use of annulus element of triangular cross-section and principle of virtual work; and give Matlab programs; and the rationality of programs is verified by triaxial tests. Regarded as new kind of geotechnical material, nanometer silicon and cement-stabilized soils are used in ground improvement in airfield project in stead of routine cement-stabilized, and compared its use with routine cement-stabilized soils. The results show that nanometer silicon and cement-stabilized soils can decrease ground settlement and improve ground bearing capacity. Born on the same overlying pressure, the settlement of nanometer silicon and cement-stabilized soils is less than that of routine cement-stabilized soils.

Key words: nanometer, cement-stabilized soils, elastoplasticity, finite elements

CLC Number: 

  • TU 471.8
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