台后填土对桥台桩基的影响分析  

In-situ test of negative friction of abutment piles in soft soil

作　　者：陈雪华[1] 律文田[1] 王永和[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《岩土工程学报》2006年第7期910-913,共4页Chinese Journal of Geotechnical Engineering

摘　　要：通过软土地区桥台桩基的现场试验研究,获得了软土地基台后路基填土过程之中和之后的第一手资料。揭示了软土地区桥台路基填土时,桥台基桩弯矩和负摩阻力的变化规律。试验结果表明:台后填土对桥台桩基的影响不仅发生在填筑施工期间,而且在施工完毕后相当长一段时间内仍有一定的影响。随着填土高度的增加,桩侧摩阻力沿深度呈非线性变化,桩身弯矩呈现增大趋势。Based on in-situ test, the first-hand materials about the pile foundation were obtained during and after embankment fill behind abutment in soft ground, and the regulation for bending moment and the negative skin friction of the pile was revealed. It was shown by the test results, the influence of embankment fill on the abutment piles existing not only during the construction, but also in a long time after the construction. The negative skin friction was nonlinearly distributed along the depth of pile and the bending moment increased with the height of embankment.

关 键 词：桥台桩基 负摩阻力 弯矩 现场试验 

分 类 号：TU473[建筑科学—结构工程]