But the current differential settlement control criterion of bridge-approach, the existing calculation models and methods of bridge-approach pavements could not describe and explain.

而现有的路桥过渡段段差异沉降控制标准与交通荷载下路桥过渡段路面的计算模型和计算方法，不能对桥头跳车问题进行全面描述和合理解释。

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The results show that long-short piles foundation demands fewer long piles and can control the average settlement and differential settlement effectively.

结果表明，长短桩组合桩基础不仅可以大量减少长桩用量，而且可有效地控制基础整体沉降和差异沉降，显示了其良好的应用前景。

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