This thesis , based on the true three - dimension consolidation theory namely biot ' s consolidation theory , adopting duncan - chang model and non - thickness goodman friction element , compiles practical 3d non - linear fem program . the conceptual geological model is established according to the north anchorage and feature of its foundation soil in zhenjiang - yangzhou yangtse bridge 本文從“真三維固結(jié)理論”即比奧固結(jié)理論出發(fā),采用鄧肯-張e模型和無厚度的古德曼( goodman )接觸面單元編制了三維非線性有限元程序?qū)嵱贸绦騜iot2000 ,并結(jié)合潤揚(yáng)長江公路大橋南汊橋北錨碇及地基土的組成結(jié)構(gòu)特征建立了概化地質(zhì)模型。