| 三轴应力下塑性混凝土应力应变关系试验研究 |
| |
| 引用本文： | 王四巍,潘旭威,高丹盈,李小超,孙义贵.三轴应力下塑性混凝土应力应变关系试验研究[J].建筑材料学报,2014,17(1):42-46. |
| |
| 作者姓名： | 王四巍 潘旭威 高丹盈 李小超 孙义贵 |
| |
| 作者单位： | 华北水利水电大学岩土工程与水工结构研究院,河南郑州450045;华北水利水电大学岩土工程与水工结构研究院,河南郑州450045;郑州大学土木工程学院，河南郑州450002;华北水利水电大学岩土工程与水工结构研究院,河南郑州450045;临沂市水利勘测设计院,山东临沂276001 |
| |
| 基金项目： | 国家自然科学基金资助项目（51109082）；水利部公益性行业科研专项（201301034）；河南省教育厅自然科学研究计划（2011A570005）；华北水利水电学院高层次人才科研启动项目资助（2011A003） |
| |
| 摘 要： | 通过4组塑性混凝土的单轴和常规三轴压缩应力应变全曲线试验，研究了三轴应力下塑性混凝土应力应变关系.结果表明：在围压作用下，塑性混凝土轴向应力应变曲线与单轴压缩下的曲线差别明显，主要表现为直线上升段很短，曲线上升段较长，无明显峰值点，下降段较平缓.利用割线模量表征塑性混凝土三轴应力下应力应变曲线上升段的主要变形特征，分析了影响割线模量的主要因素，建立了割线模量与围压、单轴抗压强度和弹性模量之间的关系式.研究了塑性混凝土三轴应力下峰值应变随围压、单轴应力下抗压强度及峰值应变的变化规律，并建立了相应的关系式.全面分析了塑性混凝土单轴及三轴作用下应力应变曲线特征，通过归一化处理后，拟合出常规三轴应力下塑性混凝土轴向应力应变关系式.
|
| 关 键 词： | 塑性混凝土 三轴试验 应力应变关系 |
| 收稿时间： | 9/6/2012 12:00:00 AM |
| 修稿时间： | 2013/1/24 0:00:00 |
Experiment Study of Stress Strain Relation of Plastic Concreteunder Triaxial Stress |
| |
| WANG Siwei,PAN Xuwei,GAO Danying,LI Xiaochao and SUN Yigui.Experiment Study of Stress Strain Relation of Plastic Concreteunder Triaxial Stress[J].Journal of Building Materials,2014,17(1):42-46. |
| |
| Authors: | WANG Siwei PAN Xuwei GAO Danying LI Xiaochao and SUN Yigui |
| |
| Affiliation: | Insitute of Geotechnical Engineering and Hydraulic Structure Engineering, North China University of WaterConservancy and Hydroelectric Power, Zhengzhou 450045, China;Insitute of Geotechnical Engineering and Hydraulic Structure Engineering, North China University of WaterConservancy and Hydroelectric Power, Zhengzhou 450045, China;School of Civil Engineering, ZhengzhouUniversity, Zhengzhou 450002, China;Insitute of Geotechnical Engineering and Hydraulic Structure Engineering, North China University of WaterConservancy and Hydroelectric Power, Zhengzhou 450045, China;Hydropower Survey and Design Institute of Linyi, Linyi 276001, China |
| |
| Abstract: | Stress strain relation of plastic concrete was studied using conventional triaxial and uniaxial compression tests with 4 plastic concrete mixes. The test results show that complete stress strain curve of plastic concrete in confining pressure is remarkably different from that in the uniaxial compression. There are longer unlinear transcending section, no distinct peak point, or sharply descending section. The relation is given between secant modulus and confining pressure, elastic modulus and strength under uniaxial compression stress. Relation is expressed between peak strain and confining pressure, strength and peak strain under uniaxial compression stress. At last, constitutive model of plastic concrete is presented in conventional triaxial stress state. |
| |
| Keywords: | plastic concrete triaxial test stress strain relation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《建筑材料学报》浏览原始摘要信息 |
|
点击此处可从《建筑材料学报》下载全文 |
|
