肖燕旗     （厦门市瑶垫新市区开发建设公司  361012）

[提要]  地下水的浮力对结构设计和施工有不容忽视的影响。结构抗浮验算与地下水的性状、水压力和浮力、地下水位变化的影响因素、意外补水有关。对结构设计中需处理好的地基反力与地下水浮力和水压力、结构整体抗浮与局部抗浮、结构布置和构件验算等一系列问题进行了讨论。
[关键词]  承载体  水压力  浮力  地基承载力  设计水位

The ground water plays important role in the design and construction of building structures. The resistance to float relates to the attributes and conditions of the ground water, the pressure and floatage of water, the change of water level and the sudden supplement of water. Some problems that must be dealed with in design,such as the whole and local resistance to float, the construction arrangement and the calculation of members,are discussed.
Keywords: water pressure; floatage; design water level; building structure; foundation