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。

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.

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对新开沱河节制闸墩墙的裂缝进行了检测，分析认为温度应力及收缩应力是裂缝产生的主要原因。

The concrete cracks in sluice pier wall of New Kaituo River were checked, and it was found that the temperature stress and shrink stress are the main reasons for cracks formation.

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阐述了砼结构体表比和约束比对温度和收缩应变和裂缝的影响程度，推导出R．C结构在四周无变位边界约束条件下的温度和收缩应变、应力及裂缝宽度计算公式和运用实例。

The formula of strain and crack width of temperature and contraction with no varying place constraint con detion are deduced, capale be design basis for crack control of R. C structure.

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