摘要
利用原位控制冻结法所取得的原状砂,通过具不同结构特性的原状和重塑样试验结果的比较研究了原状结构对饱和砂土动力变形特性的影响。文中首先探讨引起破土结构改变的各因素对小应变下最大剪切模量G_(max)的影响、G_(max)及c、n、m反映原状结构的可能性;然后探讨原状结构性对大应变下排水和不排水试验中的G/G_(max)与γ及G/G_(max)与γ/γ_r关系曲线的影响;以及排水体变和不排水孔压对试验结果的影响。
Based on the comparison of testing results between high-quality undisturbed samples, taken from in-situ by frozen method, and corresponding reconstituted samples, the effects of in-situ fabric of sands on dynamic deformation characteristics are studied in this paper.At first, the effects of various factors, which may change the fabric of sand samples, on maximum shear modulus under small strain, Gmax, are investigated; Then the possibility of reflecting fabric by coeficients c, n and m is discussed; finally, the effects of in-situ fabric of sand samples on the curves of G/Gmax vs. v and G/Gmax vs. γγ/γ(?) are studied for shear strain amplitude ranging from 10-6 to 10-2.
出处
《水利学报》
EI
CSCD
北大核心
1993年第2期32-42,共11页
Journal of Hydraulic Engineering
基金
国家自然科学基金
