补偿基础沉降机理分析  

Settlement analysis for compensated foundations

作　　者：梅国雄[1] 周峰[1] 黄广龙[1] 宰金珉[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009

出　　处：《岩土工程学报》2006年第B11期1398-1400,共3页Chinese Journal of Geotechnical Engineering

基　　金：霍英东青年教师基金(91076);教育部科学技术研究重点项目(205058);江苏省高校自然科学研究计划项目(04KJB560048);江苏省建设系统科技计划项目(JS200416)

摘　　要：补偿基础的应用逐渐广泛,但是在具体的应用过程中常常会出现补偿基础出现较大沉降的现象,甚至全补偿、超补偿基础也不例外。对此,本文分析后认为这可能与目前普遍采用的施工方法有关。目前为了施工方便而将基底回弹土体一并开挖从而使坑底土体的性状发生较大的改变,并最终导致上述现象的发生。另外,在以上分析的基础上,本文介绍了一种常用于水闸基础的“锅底形”底板并以此来解决上述问题。The compensated foundations, are applied more and more widely, but their settlement usually happen in practical applications, even for full-compensated foundations and overfull compensated foundations. It was considered that the above problems might be caused by construction methods widely adopted now. Concretely, for convenience, the heaved soils were excavated, and accordingly the character of soils in the bottom of foundation pit changed distinctly. Finally, a new raft foundation called ＂inverted vaulting raft＂ used to solve the above problem was introduced.

关 键 词：补偿基础 回弹模量 压缩模量 沉降 回弹变形 

分 类 号：TU454[建筑科学—岩土工程]