土塞效应对敞口桩承载力的影响分析  

Analysis of the Influence of Soil Plug Effect on the Bearing Capacity of Open Pipe Piles

作　　者：王利 Wang Li(Minnan University of Science and Technology,Shishi,Fujian 362700)

机构地区：[1]闽南理工学院,福建石狮362700

出　　处：《江西建材》2023年第9期182-184,共3页Jiangxi Building Materials

基　　金：福建省高校工程研究中心项目《绿色建筑施工与管理工程研究》(项目编号:闽教科[2017]13号)。

摘　　要：预制敞口桩施工过程中,土塞效应对桩基施工难易程度及单桩承载性能存在重要影响。文中基于土塞效应承载机理,结合相关规范的土塞效应计算方法,归纳了前人研究成果及大量桩基施工资料,提出了土塞有效高度的概念,建立了基于土塞有效高度的敞口桩承载力修正方法,并通过某高层建筑破坏性试桩检测结果验证了该方法的合理性。During the construction process of prefabricated open pile,the soil plug effect has a significant impact on the difficulty of pile foundation construction and the bearing capacity of a single pile.Based on the bearing mechanism of soil plug effect and the calculation method of soil plug effect in relevant specifications,this paper summarizes previous research results and a large amount of pile foundation construction data,proposes the concept of effective height of soil plug,establishes a correction method for the bearing capacity of open piles based on the effective height of soil plug,and verifies the rationality of this method through the destructive pile testing results of a high-rise building.

关 键 词：土塞效应 敞口管桩 单桩承载力 计算方法 

分 类 号：TU473.11[建筑科学—结构工程]