So it becomes one of the key techniques on dynamic control for settlement distortion that how to back-analyze parameters of ground in time base on field test data.

因此，如何及时根据施工现场实测沉降资料反分析地基土参数来预测后期沉降，已成为沉降变形动态控制的关键技术之一。

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Under the effect of load, the settlement of subgrade will lead to the lateral distortion of soft soil.

在桥头路基荷载的作用下，地基发生沉降，软土会发生一定的侧向变形。

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This paper is an analysis and summary about the causes of distortion cracks, including those caused by contraction of concrete and variation of temperature, and uneven settlement of foundation.

本文主要对变形裂缝的成因及控制措施作了分析和总结，其中包括混凝土收缩和温度变化引起的裂缝，以及地基不均匀沉降引起的裂缝等。

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