桩在上拔荷载作用下的工程性状研究进展  

Research progress in the project behavior of pile under pullout loads

作　　者：王珊珊[1] 卢成原[1] 贾颖栋[1] 王科元[1] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310032

出　　处：《浙江工业大学学报》2008年第3期279-284,共6页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(502117)

摘　　要：目前,国内外对桩的抗压性能研究比较多,而桩的抗拔性能的相关报道和研究文献相对较少.目前工程中的抗拔措施主要有压重法、抗浮锚杆、降水抗浮、抗拔桩抗浮等,而抗拔桩抗拔承载力较高,应用比较广泛.目前主要的抗拔桩有等截面抗拔桩、斜桩、扩底桩等,支盘桩作为一种抗拔性能良好的新桩型,目前也有一些研究和应用报道,但对其研究总的来讲还处在起步阶段.根据现有文献的查阅分析,介绍了目前国内外对不同桩型的抗拔性能的研究情况,分析了不同桩型的抗拔机理和抗拔承载力的计算公式,最后得出了一些结论并提出了一些建议.Much study has been done about the performance of compression strength of piles presently, while little is about the uplift resistant performance of the piles. The measures of uplift resistance are mainly weight-pressure, anti-float anchor, precipitation against floatation, uplift piles against floatation and so on. The uplift piles are widely used, as they have the higher bearing capacity. The types of uplift piles are mainly equivalent section uplift piles, inclined piles and expanded bore piles. Meanwhile, a few studies and application reports are about support board pile that is a new type of pile with good uplift resistant performance, but the study is still in the beginning. The investigation of uplift resistant performance of different types of piles was presented through reading and analyzing existing literature. The formulations of uplift resistant me- chanics and bearing capacity were analyzed. Finally some conclusions were reached and suggestions were made in this paper.

关 键 词：桩 上拔荷载 工程性状 抗拔承载力 

分 类 号：TU473[建筑科学—结构工程]