为探讨湛江强结构性原状土与相应重塑土在不同应力路径下的强度特性及其与结构性的关联性，开展了在不同固结条件下的主动压缩、被动压缩、主动伸长3种应力路径试验，分析了该强结构性黏土在不同应力条件下的力学性状与强度特性。结果表明，湛江黏土的剪切破坏形态主要是单一型、双交叉剪切带与“腰鼓”型3类，应力-应变特性主要为轻度应变软化、强烈应变软化、轻度应变硬化、强烈应变硬化4类；偏压固结下试样破坏应变小于等压固结相应值，破坏强度及初始弹性模量比后者大；不同应力路径下土的强度差异主要反映在结构屈服前有效黏聚力的不同，结构屈服前，原状土的黏聚力高于重塑土的黏聚力，内摩擦角小于后者；结构屈服后，黏聚力逐渐减小，内摩擦角略有增大。原状土到重塑土的转变过程是黏聚力与内摩擦力在土体内部相互消长的过程，强结构性黏土在结构屈服前的强度指标具有较强应力路径依赖性。

To explore the strength properties of undisturbed sample and remolded sample of Zhanjiang strong structured clay under different stress paths and its relevance to the soil structure, the stress path tests of such as conventional triaxial compression(CTC), reduced triaxial compression(RTC) and conventional triaxial extension(CTE) under different consolidation conditions are carried out, the mechanical behaviors as well as the strength properties of strong structured clay are analyzed. The results show that the shear failure modes of Zhanjiang clay mainly include unitary type, double crossover shear zone and waist drum type; and the stress-strain properties mainly include mild strain softening, intense strain softening, mild strain hardening and intense strain hardening. The failure strain of all the samples under anisotropic consolidation is less than that of isotropic consolidation while the breaking strength and initial elastic modulus are larger. The strength properties of clay under different stress paths are mainly reflected in the change of effective cohesion before the structure yielded; undisturbed sample has a higher cohesion and lower frictional angle compared with the remolded sample; but after structure yielded, the cohesion decreases and the frictional angle increases gradually. The transition from undisturbed sample to remolded sample is a growth and decline process of cohesion and friction inside the microstructure of clay. Based on the results, it is pointed out that the strength indexes of strong structured clay before the structure yielding has a quite strong dependence to the stress paths.