|
|||||
|
|
| 冻融循环后湿筛混凝土强度试验与破坏准则研究 | |
| 引用本文： | 徐秀娟,宋玉普,孙久艳,杜曰武,苏德利.冻融循环后湿筛混凝土强度试验与破坏准则研究[J].人民长江,2011,42(17):43-46. |
| 作者姓名： | 徐秀娟 宋玉普 孙久艳 杜曰武 苏德利 |
| 作者单位： | 1. 大连海洋大学职业技术学院,辽宁大连116300;大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024 2. 大连理工大学海岸与近海工程国家重点实验室,辽宁大连,116024 3. 大连海洋大学职业技术学院,辽宁大连,116300 |
| 基金项目： | 国家自然科学基金资助项目(5908026) |
| 摘 要： | 采用快速冻融法，对湿筛混凝土试件进行了冻融循环。利用大型动三轴试验机，对冻融循环后的湿筛混凝土试件进行单轴压和4种应力比的双轴压试验，观察试件的破坏形态和表面裂缝分布情况，测得双轴主压方向的极限强度,剖析了冻融循环次数和应力比对极限强度的影响规律。 试验结果表明：随冻融循环次数的增加,湿筛混凝土的双轴压极限强度呈非线性降低；在冻融循环次数相同的情况下，双轴压极限强度相对于其单轴强度均有所提高，而提高幅度取决于应力比。提出了带有冻融循环次数和应力比参数的修正湿筛混凝土破坏准则公式，可为寒冷地区的海洋工程、水工结构强度分析和寿命预测提供理论依据。 |
| 关 键 词： | 湿筛混凝土 冻融循环 应力比 双轴压强度 破坏准则 |
Study of strength experiment and failure criterion of wet-screened concrete after freeze-thaw cycles |
|
| XU Xiujuan,SONG Yupu,SUN Jiuyan,DU Yuewu,SU Deli.Study of strength experiment and failure criterion of wet-screened concrete after freeze-thaw cycles[J].Yangtze River,2011,42(17):43-46. | |
| Authors: | XU Xiujuan SONG Yupu SUN Jiuyan DU Yuewu SU Deli |
| Affiliation: | XU Xiujuan1,2,SONG Yupu2,SUN Jiuyan1,DU Yuewu1,SU Deli1(1.Vocational Technical College,Dalian Ocean University,Dalian 116300,China,2.State Key Laboratory of Costal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China) |
| Abstract: | The experimental study of the strength of wet-screened aggregate concrete was carried out using the rapid freeze-thaw method.Then the concrete specimen was tested using the static and dynamic tri-axial experimental machine under 4 biaxial compression stress ratios and uniaxial expression.The failure modes of these concrete specimens and the cracks distribution on the surfaces were observed and the ultimate strength in the main biaxial compression direction was obtained as well.The influence of freeze-thaw c... |
| Keywords: | wet-screened aggregate concrete freezing-thaw cycle stress ratio biaxial compressive strength failure criterion |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《人民长江》浏览原始摘要信息 | |
| 点击此处可从《人民长江》下载全文 | |