盘间距对水平力作用下扩盘桩土体破坏状态影响理论研究
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摘要
主要以承力扩大盘间距为主要参数变量,通过ANSYS有限元软件进行数值模拟,分析水平荷载作用下不同盘间距模型桩桩顶水平位移、桩身弯矩和桩周土体应力的变化关系。通过研究定性地确定在水平荷载作用下混凝土扩盘桩的破坏形式和盘间距的大小对其水平承载力的影响,为完善混凝土扩盘桩的设计理论和工程实际应用提供理论依据。
The main parameter variable is the enlarged disc spacing, and the numerical simulation is carried out by ANSYS finite element software. The relationship between the horizontal displacement of pile top, the bending moment of pile body and the stress of soil around the pile under different disc spacing model under horizontal load was analyzed. The failure mode of concrete expanded disk pile under horizontal load and the influence of the spacing of concrete expanded disk pile on its horizontal bearing capacity were qualitatively determined, which provides a theoretical basis for improving the design theory and practical application of concrete expanded disk pile.
The main parameter variable is the enlarged disc spacing, and the numerical simulation is carried out by ANSYS finite element software. The relationship between the horizontal displacement of pile top, the bending moment of pile body and the stress of soil around the pile under different disc spacing model under horizontal load was analyzed. The failure mode of concrete expanded disk pile under horizontal load and the influence of the spacing of concrete expanded disk pile on its horizontal bearing capacity were qualitatively determined, which provides a theoretical basis for improving the design theory and practical application of concrete expanded disk pile.
引文
[1]于洋.盘间距对水平力作用下扩盘桩土体破坏状态影响研究[D].长春:吉林建筑大学,2018.
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[2]QIAN Y,CHENG Q,ZHAI R.Research on the test method of the concrete expanded-plates pile[J].2015.
[3]QIAN Y,YU Y,SU X,et al.Experimental research scheme on fine-silt sand moisture content affecting the failure behavior of soil surrounding the CEP pile[C]//International Forum on Energy,Environment and Sustainable Development.2016.
[4]QIAN Y,WANG X,WANG R.Finite element analysis of the influence about the space between bearing expanded-plate to the bearing capacity of single pile of the MEEP pile[J].Open Civil Engineering Journal,2015,9(1):495-497.
[5]XU L,GUO X,NIE L,et al.Simulation study of the load-settlement behavior of a single pile using the osterberg-cell test based on the load transfer theory[J].Open Civil Engineering Journal,2016,10(1):813-825.