| 1. | Earth pressure distribution 土压力分布 |
| 2. | Earth pressure distribution back of wall has a bearing on tensile force calculation of cfrp belt . through analyzing and comparing several calculation methods , one kind is be recommended at last 墙面板后土压力的分布变化情况直接关系到拉筋的拉力计算,论文通过对几种计算方法进行分析比较,给出了较合适的推荐计算方法。 |
| 3. | Test results show that the seaside earth pressure distribution of the barrier piles is similar to the landside before excavation of the harbor pond , while after excavation of the harbor pond , the seaside earth pressure is clearly less than the landside 试验结果表明,在港池形成前,遮帘桩海、陆侧土压力分布基本相同;港池开挖后,遮帘桩临海侧土压力明显低于陆侧。 |
| 4. | The model of the earth pressure distribution along the different sides of large diameter cylinder structure is studied , in the base of the achievement of the former research and the experience from practice , the model is be put forward 本文在以往的研究成果和实践经验的基础上,深入研究了大圆筒结构内、外土压力的分布规律,提出了更加切合实际的作用在大圆筒结构上的土压力分布模式。 |
| 5. | Analyses of circumjacent earth pressure distribution establish the mechanical model of basic loads about stability , strength and stiffness of pipeline while defmitude of cross section stresses has a bearing on design purposes of production and practicality 管道周边土压力分布性状的分析奠定管道稳定性、强度和刚度计算的基本荷载的力学模型,而管道本身横截面应力的确定关系到生产实用的设计目的。 |
| 6. | Through the analysis and calculation the conclusion can be made that during the process of the timbering of excavation , the magnitude of soil stress decreases with the increase of the displacement on the base of the still earth pressure , and the earth pressure distribution varies from the triangular distribution of the still earth pressure to other distribution with the displacement of the timbering structure . the thesis introduces the bedding coefficient in the horizontal direction varying with the soil displacement from soil - structure interaction mode , therefore calculation can be made to get more rational calculation result using elastic foundation finite element method which is the same to timbering structure both upwards and under excavation surface 通过分析计算可以得出,在基坑支护过程中,土压力的大小在静止土压力值的基础上随支护结构向坑内侧位移增大而减小;土压力的分布由静止土压力的三角形分布随支护结构位移变化成其它分布;由土-结构共同作用模式引入随土体位移变化的水平向基床系数,使支护结构在开挖面以上部分同以下部分一样,均可采用弹性地基有限元法进行计算,得出更为合理的计算结果。 |
| 7. | For the construction of single - arch tunnel within cracked surrounding rocks , 8 tunnel models are set up to study the effect of the earth pressure distribution of the various surrounding rocks due to excavation . the relationships between the loosen zone of tunnel radial earth pressure and the tunnel diameter , the characteristics of surrounding rocks and the exposed time are revealed . it is showed that the pressure loosen radius is 1 . 2 ~ 2 . 0 tunnel diameters and the strongly loosen radius drops to 0 . 5 ~ 1 . 0 one for double lane tunnel 对于单拱破碎围岩隧道的构筑问题,作者设置了8个隧道模型,研究开挖对不同隧道围岩压力分布的影响,揭示了洞周径向压力的松弛范围与洞径、围岩特性、裸露时间的关系,得到双车道隧道压力松弛半径为1 . 2 2 . 0倍洞径,强烈松弛区半径为0 . 5 1 . 0倍洞径。 |
| 8. | Although grouting - lift is a complicated dynamic process , according to the difference of action between the slurry and soil , this process is provided into several static stages in the paper . in every stage , the author expounds the working mechanism and builds the model , to study earth pressure distribution and lift - force magnitude when being grouted 结合每个阶段的特点,进行注浆机理阐述,建立注浆模型,探讨了注浆过程中土层中压力分布规律和顶升力大小的计算方法,分析了土体抬升的破坏模式以及注浆的加固效果、顶升效果和注浆量之间的关系。 |