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中文摘要：
本文通过引入上负荷面剑桥模型，考虑超固结以及结构性因素对土体力学特性的影响后，在统一理论框架下对不同土体介质材料的应力应变关系与液化特性进行了数值试验研究。研究结果表明，与黏性土相比，砂性土由于其颗粒间的微观结构在外力扰动下更容易遭到破坏，对外力扰动极为敏感，因此更容易导致土体的屈服和液化，相关结论可为饱和可液化地基环境条件下的工程结构设计提供参考。
英文摘要：
By analyzing Cam-clay model of top load surface, considering the impact of over-consolidated and structural factors on the mechanical behaviors of soil body, numerical test and study have been carried out for the stress-strain relationship, and liquefaction behavior of different soil media in a unified theoretic framework. The research results reveal that sandy soil is sensitive to external disturbance, even tends to soil yielding and liquefaction due to the microstructure among grains that can be easily destroyed by external force in contrast with clay soil. The conclusion could provide a reference for the structural design under the condition of saturated liquefiable soil base.
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