| 上海第④层冻土和融土无侧限抗压强度 |
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| 引用本文： | 宋志刚,唐益群,洪军,王元东,李仁杰,赵化. 上海第④层冻土和融土无侧限抗压强度[J]. 低温建筑技术, 2009, 31(12): 85-87 |
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| 作者姓名： | 宋志刚 唐益群 洪军 王元东 李仁杰 赵化 |
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| 作者单位： | 同济大学地下建筑与工程系,上海,200092;同济大学岩土及地下工程教育部重点实验室,上海,200092;同济大学地下建筑与工程系,上海,200092;同济大学岩土及地下工程教育部重点实验室,上海,200092;华东电力设计院,上海,200092 |
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| 基金项目： | 国土资源部;上海市人民政府联合资助项目，上海市重点学科(地质工程)建设项目资助 |
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| 摘 要： | 以上海地区第④层淤泥质粘土冻融前后无侧限抗压强度为对象,展开实验研究,得到了5种温度(-5、-10、-15、-20、-30℃)下冻融前后无侧限抗压强度的变化关系,并对比分析;随温度的降低,融土无侧限抗压强度的变化速度小于人工冻土的无侧限抗压强度增加速度。运用损伤力学中损伤值的计算公式,计算出不同温度下冻融土的损失值,二者有较好的线性关系。
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| 关 键 词： | 人工冻土 融土 无侧限抗压强度 损伤值 |
EXPERIMENT STUDY ON UNCONFINED COMPRESSIVE STRENGTH BEFORE AND AFTER THAW OF THE FORTH LAYER SILT CLAY IN SHANGHAI |
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| SONG Zhi-gang,TANG Yi-qun,HONG Jun,WANG Yuan-dong,LI Ren-jie,ZHAO Hua. EXPERIMENT STUDY ON UNCONFINED COMPRESSIVE STRENGTH BEFORE AND AFTER THAW OF THE FORTH LAYER SILT CLAY IN SHANGHAI[J]. Low Temperature Architecture Technology, 2009, 31(12): 85-87 |
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| Authors: | SONG Zhi-gang TANG Yi-qun HONG Jun WANG Yuan-dong LI Ren-jie ZHAO Hua |
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| Affiliation: | SONG Zhi-gang1,2,TANG Yi-qun1,HONG Jun1,3,WANG Yuan-dong1,LI Ren-jie1,ZHAO Hua1,2(1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China,2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,3.East China electric power design institute,China) |
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| Abstract: | By test studying unconfined compressive strength before and after thaw of the forth layer silt clay in shanghai,it is obtained the relation of unconfined compressive strength before and after thaw and 5 kinds of temperatures(-5、-10、-15、-20、-30℃),and comparative analyzing,it is found that with temperature decreasing,unconfined compressive strength change velocity of thaw clay is less than that of frost clay,.Making use damage mechanics of calculation formula on damage value,damage value with different temperatures is gained,and these have better linear relationship. |
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| Keywords: | artificial frozen clay thaw clay unconfined compressive strength damage value |
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