| 1. | Determination of creep strains under compression of autoclaved aerated concrete or lightweight aggregate concrete with open structure
敞形结构高压蒸养加气混凝土或轻集料混凝土的加压蠕变变形测定 |
| 2. | Determination of creep strains under compression of autoclaved aerated concrete or lightweight aggregate concrete with open structure
蒸气加气混凝土或开式结构轻集料混凝土在压缩条件下蠕动变形的测定 |
| 3. | Determination of creep strains under compression of autoclaved aerated concrete or lightweight aggregate concrete with open structure ; german version en 1355 : 1996
高压蒸气加气混凝土和堆放多孔轻质混凝土压应力蠕变 |
| 4. | Standard test method for elevated temperature tensile creep strain , creep strain rate , and creep time - to - failure for advanced monolithic ceramics
高级单片陶瓷的高温抗拉蠕变应变,蠕变应变率及蠕变断裂时间的标准试验方法 |
| 5. | To the problems in long - term monitoring of concrete stress , the numerical simulation for concrete creep effect of the main girder segment of wenhui bridge was made ; accordingly a method that can approximately separate the creep strain was put forward
针对目前混凝土应力长期监测中存在的问题，对文晖大桥主梁节段进行了徐变效应的数值模拟分析，并提出了近似的徐变应变分离方法。 |
| 6. | 4 . the recurrence formula of the creep strain is the key of fem calculation of creep stress . in this paper the exponential function is used to figure the creep strain , and the recurrence formula of 3d creep strain at any periond of time is derivated
徐变变形递推计算公式是温度徐变应力有限元计算实现的关键所在，本文用指数函数式表示徐变度，在此基础上，对三维空间问题徐变变形进行了研究，推导了任一时段徐变增量的递推计算公式。 |
| 7. | The study on high - temperature low - cycle fatigue life and fatigue crack propagation life under multi - axial stress state shows that the fatigue life and fatigue crack propagation life can be characterized by the equivalent plastic strain range p , the equivalent creep strain range c and the equivalent strain range , and do n ' t exit notch dependency , non - notch - dependency equations being given in the paper
) _ c和当量应变范围( ? )进行多维应力状态高温低周疲劳总寿命及裂纹扩展寿命评价是可行的，且不存在缺口依存性。并给出无缺口依存性的疲劳总寿命评价方程。 |
| 8. | After the evaluation of the three parameters in the proposed creep model , which is based on the large numbers of experimental measurements of concrete creep , the influential regularities of concrete filled steel tube columns under long - term loading are investigated . by dispersing time , the method of tangent modulus is adopted to study the relation of creep strain and load time . in the end , this paper took cft specimens with representative geometry and sectional dimensions as examples and adopted the proposed method as an approach to investigate the influencing regularities of many factors , which include the ratio of long - term load to strength , the slenderness ratio , the eccentricity ratio , and the intensity grade of concrete , on cft structures
在对钢管混凝土构件长期荷载效应的分析中，本文基于三维粘弹性理论，采用三参数粘弹性模型，提出了核心混凝土徐变的三维有限元分析理论，在总结过去大量关于混凝土徐变试验实测结果的基础上拟合了模型中的三个参数，并成功将其应用于钢管混凝土徐变的三维分析计算中，得到徐变与持荷时间的关系，以典型截面形式的圆钢管混凝土轴压、偏压构件为例，对轴压比、长细比、含钢率、偏心率以及核心混凝土等级分别进行了大量的参数分析和实验对比研究，结果表明二者符合较好。 |
| 9. | 3 . the two stages of primary creep and steady - state creep of 3d c / sic correspond to the gradual saturation of matrix crack and the opening of these cracks respectively . the transverse crack is the main contributor to the macroscopic creep strain of 3d c / sic , and its opening is controlled by the creep temperature
( 3 ) 3dc sic复合材料的减速蠕变阶段和稳态蠕变阶段分别对应着基体裂纹趋于饱和和逐渐张开这两个过程；横向基体裂纹是3dc sic复合材料宏观蠕变应变的主要贡献者，温度是影响横向裂纹张开速度的一个重要因素。 |
| 10. | This result has practical significance . in this paper ' s theoretical section , base on current shrinkage and creep calculational methods , analysis to the experiment project and tall building structure examples were made , and then the influence of shrinkage and creep to structure stress was put into discussion ; moreover , an fea program was compi led to calculate shrinkage and creep strain considering construction process , and through a tall building instance , the influence to tall frame structure stress was analyzed
本文的理论部分在现有收缩徐变计算方法的基础上对本试验工程和高层建筑结构进行了算例分析，通过与弹性计算值的对比，讨论了收缩徐变对结构内力的影响，以及计算收缩徐变时是否考虑钢筋和施工过程对结果的影响；本文还编制了考虑施工过程收缩徐变的有限元程序，并进行了算例分析。 |
