摘要
混凝土扩盘桩的盘间距是指设置多个承力扩大盘时,上盘下端到下盘上端的净距离,新型混凝土扩盘桩抗水平力影响的研究尚不完善,特别是对于多盘的新型混凝土扩盘桩,盘间距是影响桩周土体破坏状态和承载力的主要因素之一,但相关研究还不明确,这种不确定性阻碍了混凝土扩盘桩在实际工程中的应用。本文通过原状土小比例半截面模型桩试验,分析桩土相互作用和桩周土体破坏状态,进而确定盘间距对新型混凝土扩盘桩抗水平力的影响,有利于完善混凝土扩盘桩的设计计算方法和在实际工程中的推广应用。
Concrete expansion disc pile of plate spacing is to point to set up multiple, of bearing enlarging disk in the plate on the bottom to the top of footwall net distance, a new type of concrete expansion disk pile resistance to research on the effects of horizontal force is not perfect, especially the new expansion of concrete piles for multiple plate, plate spacing is the influence of pile soil damage state and one of the main factors of bearing capacity, but the related research is not clear, The application of concrete expansion pile in practical engineering is discussed by this uncertainty. In this paper, the interaction between pile and soil and the failure state of soil around the pile are analyzed through the test of small proportion half-section model pile of undisturbed soil, and then the influence of disk spacing on horizontal force resistance of new type concrete expanded disk pile is determined, which is beneficial to improve the design and calculation method of concrete expanded disk pile and its application in practical engineering.
作者
李华强
钱永梅
周婷婷
牛雷
LI Huaqiang;QIAN Yongmei;ZHOU Tingting;NIU Lei(School of Civil Engineering,Jilin University of Architecture,Changchun 130118,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S02期1593-1597,共5页
Building Structure
基金
国家自然科学基金项目(52078239,51678275)
关键词
承力扩大盘
混凝土扩盘桩
盘间距
抗水平力
桩土相互作用
load-bearing expanded plate
concrete expansionplate pile
disk spacing
resistance to horizontal force
pile-soil interaction
