福州盆地结构性软土动阻尼比试验对比研究OA北大核心CSCDCSTPCD
A COMPARATIVE STUDY ON DYNAMIC DAMPING RATIO TESTS OF STRUCTURAL SOFT SOILS IN FUZHOU BASIN
以福州盆地广泛存在的3层结构性软土为研究对象,首先阐述了三者的沉积特征及常规物理力学性质,然后利用共振柱试验仪进行了一系列不同固结应力下动力试验,得到不同结构性软土在动荷载作用下的动阻尼比λ,通过数值分析给出其阻尼比λ与剪应变γ关系曲线,进而分析不同结构性软土试验结果的差异.试验结果表明:动阻尼比λ与剪应变γ关系与固结应力没有很强的相关性,在剪应变0.00001～0.01范围内三层结构性软土λ-γ曲线差异较大.试验成果为进一步了解福州盆地土层地震…查看全部>>
This paper investigates the three-layer structural soft soil that widely exists in Fuzhou Basin. First, the sedimentary features and conventional physical mechanics properties of the three soils are illustrated respectively. Then by means of the resonant column test instrument, a series of dynamic tests are conducted with different consol- . idation stresses to attain the dynamic damping ratio λ of different structural soft soils under the effect of dynamic …查看全部>>
蔡辉腾;金星
福州大学土木工程学院 福州 350003福建省地震局 福州 350003
建筑与水利
结构性软土动阻尼比共振柱试验阻尼比λ与剪应变γ关系曲线
Structural soft soil Dynamic damping ratio Resonant column test The relation curve of damping ra-tio A and shear strain γ
《工程地质学报》 2012 (3)
427-432,6
国家科技支撑计划(2009BAK55B00).
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