CAJ | 학술논문

对现场制作的加强型试件填芯混凝土管桩进行水平往复加载试验，研究各级荷载下裂缝的发展形态和破坏形式，得出管桩开裂先于加强环根部，且荷载达到最大时由于加强环的约束作用连接处未发生破坏，改善了连接处的抗弯承载能力；同时推导出填芯管桩的开裂弯矩理论计算公式并对实测结果进行验证；试件发生节点连接破坏后，结合试验各项参数推算出加强型试件节点处抗弯承载力公式并根据绘制的荷载-位移曲线计算出根部破坏时的抗弯承载力值，对其进行理论计算验证。
대현장제작적가강형시건전심혼응토관장진행수평왕복가재시험，연구각급하재하렬봉적발전형태화파배형식，득출관장개렬선우가강배근부，차하재체도최대시유우가강배적약속작용련접처미발생파배，개선료련접처적항만승재능력；동시추도출전심관장적개렬만구이론계산공식병대실측결과진행험증；시건발생절점련접파배후，결합시험각항삼수추산출가강형시건절점처항만승재력공식병근거회제적하재-위이곡선계산출근부파배시적항만승재력치，대기진행이론계산험증。
Based on the analysis of the flexural properties on the connection of reinforced pile and pile cap under horizontal load at the site production of core concrete pipe , the development morphology of crack and the failure forms under various loads ore onvestiguted .It concluded that the crack of pile is earlier than reinforcing ring root, and when the load reaches the maximum , the junction ’ s destruction did not occur because of the confinement of the strengthening ring , which improves the bending capacity of the junction .and we deduct the form of cracking moment and verify the test result , after the nodes connection was destroyed .At last , combi-ning the test parameters it is able to estimate the bending capacity formula and calculate the bearing capacity when the root is destroyed .