| 1. | Of special interest are the results of some trials to predict small earthquakes in very short time range . 特别有意义的是在非常短促的时间范围内预报小震的某些试验的结果。 |
| 2. | Parameters of small earthquake sequence in 小震序列运动学参数时变特征研究 |
| 3. | An analysis of failures and failure dependencies of the rc frame structures 砼框架结构在小震下失效及相关性分析 |
| 4. | The conclusion validated that failure of beam constraints statistically independent under small earthquakes 验证框架结构在小震下,梁约束的失效是统计独立的结论。 |
| 5. | Stress concentrations in the tips of randomly distributed cracks around the inclusion lead to the precursory seismicity pattern 它们是形成小震空区、条带和地震空间丛集图像的基础。 |
| 6. | Based pm the method of static elastoplasticity , the failure dependency problem of rc frame structures studied under small and strong earthquakes 基于静力弹塑性分析方法,对钢筋混凝土框架结构在小震和大震下进行了失效相关性研究。 |
| 7. | It was validated that the statistic independence of the failure sections of the components of the rc frame buildings under the small earthquakes ; 2 验证了在小震作用下,强柱弱梁钢筋混凝土框架结构的截面失效是统计独立的结论; 2 |
| 8. | On the basis of research achievements under small earthquakes , some failure dependency rules of beam and column are obtained under strong earthquakes 在小震研究成果的基础上,对钢筋混凝土框架结构在大震情况下的失效相关性问题进行进一步研究,得出框架梁、柱在大震作用下的部分失效相关性规律。 |
| 9. | Daqing city , on the whole , belongs to the weaker part in the northeast earthquake regions , but the earthquakes on a little scale occurred more frequently since 1970 大庆市属于东北地震区地震活动相对较弱部分,没有中强震的历史记载,但1970年以来地震观测资料表明,大庆及邻区现代小震活动相对频繁。 |
| 10. | Using the failure criterion of maximum equivalent stress and the method of element birth and death , the space distribution features of small earthquakes ( micro cracks in rock ) before a strong earthquake are simulated 利用最高应力破裂准则、释放破裂单元刚度生与死的方法,模拟强震前岩石的破裂和小震的空间分布特征。 |