陆少连     （杭州市建筑设计研究院 310001）

[提要]  对于超长的钢筋混凝土结构，需要在一定的长度处设置温度伸缩缝，但地下室温度伸缩缝的『卜水带由于老化会引起漏水。故超长地下室采用微膨胀混凝土浇筑而不设温度伸缩缝是一种经济、有效的措施。为此提出了相应的简化计算公式和设计建议。
[关键词]  伸缩缝  膨胀混凝土  化学预应力  地下室

To the reinforced concrete structures with excessive regulation length, the usual method is designing a expansion joint in certain length. But the stopwater band in expansion joint of the basement will leak out water because of aging. Adopting tiny extended concrete to build the excessive regulation length basement without setting expansion joint for temperature is an economical and efficient design. The simplifying formulas and design suggestion are proposed.
Keywords:  expansion joint; expansive concrete; chemical prestressed