Abstract The Goodm an elem en t is u sed to sim u late the in teract ion betw een so il and st ructu re. Tak ing the
deep foundat ion p it of Huangpu river w alk ing tunnel as an examp le, the inf luence of st iffness of Goodm an
elem en t on disp lacem en t of w all and su rface set t lem en t is analyzed w ith f in ite elem en tm ethod. Th is p rovides
a basis fo r the cho ice of st iffness coeff icien t s on num erical calcu lat ion of sof t so il foundat ion p it and
info rm at ionalized con st ruct ion.
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Received: 18 August 1999
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