| 1. | Discussion of calculation method of effective pile length of compound foundation
复合地基有效桩长的计算方法 |
| 2. | 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 |
| 3. | The result testifies that compaction under reamed bored piles obtain good results under the same geological conditions , such as increasing pile bearing capacity up to 75 . 3 % and reducing settlement and pile length
结果表明，在同等工程地质条件下挤扩支盘桩提高承载力可达75 . 3 % ，并能减少沉降和缩短桩长，具有良好的经济效益。 |
| 4. | Finically , the dynamic property of portal water injection sheet piles is analyzed in this paper , and the influence on dynamic property of pile length and distance between piles is discussed in detail
此外，还探讨了门架式水力插板桩的动力特性，以及桩长和桩间距对结构动力特性的影响。为进一步指导工程实践提供了理论依据。 |
| 5. | The application indicates that the settlement - based design for pile foundations could greatly reduce the total costs by eliminating the necessity of soft soil treatment at embankments and decreasing pile lengths and pile numbers
设计实践表明沉降控制桩基对于简支桥梁是完全可行的，并能同时减少桥坡处理、桩基工程以及后期维修费用，因而具有较大的推广应用的价值。 |
| 6. | Firstly , this paper analyzes the distribution of pile - top counter force , pile - end resistance and additional stress of the substratum influenced by raft rigidity in different loads and piles length . it proves the internal forces of foundations distribute unevenly
本文首先采用有限单元法分析了不同荷载形式，不同桩长条件下筏板刚度对桩顶反力、桩端阻力和下卧层附加应力等的影响。 |
| 7. | By adjusting pile lengths and pile numbers , the settlement of pile foundation increased from the main span to the side span to such an extent that it matched the settlement of the embankment at both ends of bridges without any special treatment
分别通过调整桩长和桩数，使桩基沉降从桥梁主跨逐步增大，而在路桥连接处使边跨桥墩沉降与桥坡填土沉降基本一致，实现路桥沉降协同，从而开辟了解决桥头跳车问题的新途径。 |
| 8. | In this paper , the theory for lateral vibration of pile foundation with consideration of shear deformation of pile is established , and the influence of the ratio of pile length to its diameter , the ratio of pile stiffness to soil stiffness and dimensionless frequency were studied systemically
本文建立了一整套考虑桩体剪切变形的桩基水平振动分析理论，并较系统地研究了桩的长径比、桩土刚度比、激振频率等因素对桩基水平动力响应的影响。 |
| 9. | As the pile group with variant pile diameters and pile lengths differs in composition from the conventional pile group with identical single piles , the combined action of engineering piles and fender piles is most important for mechanism of the technique of one pile with three usages
由于桩长、桩径不同的桩组成的群桩与传统的由几何条件相同的桩组成的群桩在构成的形式上有所不同，因此围护桩与工程桩共同作用理论是“一桩三用”技术中需要重点研究的内容。 |
