管桩内孔填芯钢筋混凝土抗拔强度试件的研究

The research of the specimen' tensile strength of filling-core reinforced concrete plate on pipe pile inner hole

进行了填芯混凝土与管桩内壁抗剪试验研究,根据试验结果分析了桩与填芯混凝土在破坏时的形态,破坏时桩身的受力特征和影响管桩承载力的因素,在试验的基础上,结合新老混凝土粘结性能的研究成果,提出了填芯混凝土与管桩内壁间的平均粘结系数的建议值。

This paper has a research on shearing resistance＇s experiment of filling-core concrete and the pipe pile＇s internal wall.According to the result of experiment,it analyzes the form of damaging on pile and filling-core concrete.The mechanical characteristics of pile body when it is damaging and the influenced factors of pipe pile＇s load capacity are analyzed in this paper too.On the basis of the experiment,combining the experimental result of bond performance on the new and old concrete,it proposes the average reliable values on the filling-core concrete and the pipe pile＇s internal wall.