中文摘要：

渴望突然的机制合成堆的椽子地基被讨论。假定在之间的关系砍强调并且砍包围土壤的紧张 waselasto 塑料，砍排水量方法被采用在也在堆积的顶建立在负担和排水量之间的不同明确的关系方程有弹性的 orelasto 塑料的时期。然后， Mylonakis & Gazetas 模型被介绍模仿在二堆积之间或在堆积和土壤之间的相互作用。就垫子的效果而言，相互作用的灵活系数被提供。与一个相关节目的增加，为渴望突然的解决计算合成堆的木排基础是。开发了哪个能被用来说明堆积，土壤和垫子的相互作用。最后，计算方法被用来分析一个设计例子。解决的计算价值是 10.2 公里，它接近观察价值 8.8 公里。

英文摘要：

The mechanism of long-short composite piled raft foundation was discussed. Assuming the relationship between shear stress and shear strain of the surrounding soil was elasto-plastic, shear displacement method was employed to establish the different explicit relational equations between the load and the displacement at the top of pile in either elastic or elasto-plastic period. Then Mylonakis ＆ Gazetas model was introduced to simulate the interaction between two piles or between piles and soil. Considering the effect of cushion, the flexible coefficients of interaction were provided, With the addition of a relevant program, the settlement calculation for long-short composite piled raft foundation was developed which could be used to account for the interaction of piles, soil and cushion. Finally, the calculation method was used to analyze an engineering example. The calculated value of settlement is 10.2 ram, which is close to the observed value 8.8 mm.