饱和砂土在往复荷载作用下有侧限的本构关系实验研究
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摘要
为了得到往复荷载作用下有侧限的饱和砂土的本构关系，反映非线性和滞回特性并能方便地应用于发生液化的情况，进行了系列实验。实验材料包括４种不同松密程度的细砂，加、卸载路径包括等幅的及不等幅的情况。根据实验数据，得到了以双曲线形式表述的砂土应力－应变关系，包括加载曲线和卸载曲线。
In order to obtain a constitutive relation of saturated soil with laterally constrained compression under cyclic loading, a series of experiments have been carried out so as to describe the nonlinear and hysteresis characteristics property. The specimens are made from loose sand soil, dense sand soil, coarse sand soil and fine sand soil. The specimens are acted with cyclic loadings of equal or unequal amplitude. Based on the experimental data, the constitutive relation expressed by a set of hyperbolas is obtained to include all the loading and unloading parts. The parameters in the relation are also given.
In order to obtain a constitutive relation of saturated soil with laterally constrained compression under cyclic loading, a series of experiments have been carried out so as to describe the nonlinear and hysteresis characteristics property. The specimens are made from loose sand soil, dense sand soil, coarse sand soil and fine sand soil. The specimens are acted with cyclic loadings of equal or unequal amplitude. Based on the experimental data, the constitutive relation expressed by a set of hyperbolas is obtained to include all the loading and unloading parts. The parameters in the relation are also given.
引文
1 Terzaghi K, Peck R B. Soil Mechanics in Engineering Practice[M].New York: John Wiley and Sons. Inc., 1948, 56-73
2 Scott C R. Soil Mechanics and Foundations London: AppliedScience Publkishers LTD, 1980. 96-104
3 Lambe T W, Whitman R V Soil Mechanics [M]. New York: Wiley andSons. 1969. 125-125
4 陈存礼,谢定义 动荷载作用下强度发挥面和主间强度发挥面上砂 上的应力应变关系研究[J].岩石力学与工程学报,2000:19(6): 770～774
5 林少宫. 基础概率与数理统计[M].北京:人民教育出版社.1963, 194～214
6 胡问尧,王天龙.原状饱和粘性土在地震作用下的剪切模量和阻尼 比[J].岩土工程学报,1980,2(3):82～94
7潘复兰.土层深度对泊松系数、垂直压应力与侧向压应力之比的影 响[J]. 土本工程学报,1985,18(3):53～60
8 李世海,徐以鸿,张均锋等 .冲击荷载作用下饱和砂土孔压特性的 简化力学模型与分析[J].岩石力学与工程学报,2000,19(3):321～ 325
9 张均锋.盂样跃,谈庆等 冲击荷载下饱和砂土的密实与排水过 程的初步分析[J].岩石力学与工程学报,2000,19(5):622-624
2 Scott C R. Soil Mechanics and Foundations London: AppliedScience Publkishers LTD, 1980. 96-104
3 Lambe T W, Whitman R V Soil Mechanics [M]. New York: Wiley andSons. 1969. 125-125
4 陈存礼,谢定义 动荷载作用下强度发挥面和主间强度发挥面上砂 上的应力应变关系研究[J].岩石力学与工程学报,2000:19(6): 770～774
5 林少宫. 基础概率与数理统计[M].北京:人民教育出版社.1963, 194～214
6 胡问尧,王天龙.原状饱和粘性土在地震作用下的剪切模量和阻尼 比[J].岩土工程学报,1980,2(3):82～94
7潘复兰.土层深度对泊松系数、垂直压应力与侧向压应力之比的影 响[J]. 土本工程学报,1985,18(3):53～60
8 李世海,徐以鸿,张均锋等 .冲击荷载作用下饱和砂土孔压特性的 简化力学模型与分析[J].岩石力学与工程学报,2000,19(3):321～ 325
9 张均锋.盂样跃,谈庆等 冲击荷载下饱和砂土的密实与排水过 程的初步分析[J].岩石力学与工程学报,2000,19(5):622-624
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