| 1. | The effect of area replacement ratio and pile length on the stress and deformation of composite foundation
面积置换率和桩长对复合地基的应力和变形的影响 |
| 2. | Outside the improved area , the peak acceleration increases and the peak shear stress decreases with the increment of replacement ratio
在复合地基加固范围之外，随着置换率的增加，复合地基中加速度峰值逐渐增大而剪应力逐渐减小。 |
| 3. | The moisture buffering effect of this layer depends very much on the air exchange rate and also on the ratio of the surface area of the buffer to the volume of the room
湿缓冲效果依赖于空气置换率和房间内多孔缓冲材料的表面积和空间的比率。 |
| 4. | A successful case that the soft - hard and non - uniformity foundation was treated in sections using vibrating crushed - stone piles with different proportion of replacement is instroduced
摘要本文介绍了用不同面积置换率的挤密碎石桩法分段处理软硬严重不均匀地基的成功实例。 |
| 5. | The relationship between mechanic characteristics of composite ground and the length , the distance , elasticity modulus and replacement percentage of piles are discussed . the results of computing analysis has been contrast to the experimental data
研究桩长、桩距、桩体模量以及置换率对单桩承载力、桩间土承载力发挥值以及桩土应力比的影响程度，并将计算结果与实测结果相比较。 |
| 6. | Associating example , the influence factors of the stress ratio of pile and soil are discussed , especially the replacement rate , the modular ratio of pile and soil , deformation modular of gravel pile , reyleigh wave velocity of soil between piles are given more effort
文章结合实例对桩土应力比的影响因素进行了讨论，并重点分析了置换率、桩土模量比、碎石桩变形模量、桩间土瑞雷波速对桩土应力比的影响。 |
| 7. | And then , using the ansys program and predigesting the pile - balsa foundation to plane strain problem , some main parameters ( foundation stiffness , pile soil module ratio , replacement ratio , etc ) were calculated to analyze the influence to stress field and deformation field in soil
其次利用ansys有限元程序，将复合桩基近似简化为平面应变问题。分析了基础刚度、桩土模量比、置换率等对地基中应力场和位移场分布的影响。 |
| 8. | The peak acceleration and the peak shear stress in superstructures increase with the increment of replacement ratio . parameters of softening model are obtained through seismic settlement tests of composite cemented clay samples and relative curves are plotted considering different replacement ratio
通过复合试样的震陷试验，采用软化模型的概念，得到了该模型有限元计算的有关参数，将这些参数和置换率的关系绘制成曲线并且给出了拟合公式。 |
| 9. | Firstly , the theory of compound foundation and pile foundation are summarized in this paper . the finite element , displacement models and computational program are introduced , then how such factors as the stiffness of pile , the ratio of length and radius of the pile & replacement ratio influence the settlement of compound foundation are analyzed . there has the best modulus of pile , the best of the length & replacement ratio and some data have been obtained
首先总结了复合地基和桩基的理论和设计计算方法，对有限单元和位移模式以及有限元计算程序进行了介绍，然后分析了桩的刚度、长径比、置换率等因素对复合地基沉降的影响，证实了带承台复合地基存在最佳桩土模量比、最佳长径比和最佳置换率，并得出了相应的数值可供工程实践参考。 |
| 10. | Compared with free field , the peak acceleration decreases and the peak shear stress increases under the overload transmitted from superstructures either inside or outside improved area . at the same replacement ratio , the peak acceleration and the peak shear stress both increase with the increment of layers in superstructures
在上部建筑结构中，复合地基置换率相同时，随着层数增加，结构中的加速度和剪应力峰值都随之增大;而置换率增大时，结构中的加速度和剪应力峰值也增大。 |
