| 摘要 |
The present invention relates to a joint structure between a column member and a coping part in a prefabricated and internally confined hollow precast pier, wherein the joint structure applied to the uppermost column segment joined to the coping part comprises: a joint member including vertical joint members and lateral joint members, wherein the vertical joint members have one sides buried in a concrete part and the other sides buried in the coping part, and the lateral joint members buried in the concrete part and surrounding the vertical joint members are fastened to the vertical joint members; a diaphragm formed to be integrated with an internal steel pipe and protruding from the internal steel pipe to a hollow portion inside the uppermost column segment; a cushioning pad positioned at the upper end of the uppermost column segment, arranged between an external steel pipe and the internal steel pipe, and having insertion holes into which the vertical joint members are inserted; and multiple corrugated pipes surrounding the respective vertical joint members buried in the coping part and protruding from the coping part, and having a filling material filled therein. According to the present invention, the top portion of a column can be stably joined to the coping part even if vibration is generated in the pier without the separation problem of a prior art in which the top portion of the column can be separated from the coping part when nuts are unfastened by the vibration; the diaphragm installed inside the internal steel pipe allows a contact surface between the uppermost column segment and the coping part to be increased so that a punching failure can be prevented; the corrugated pipes installed in the coping part allow a joint performance between the uppermost column segment and the coping part to be improved; and the cushioning pad installed at the upper end of the uppermost column segment can prevent the local failure of the coping part, wherein the local failure is generated in a joint portion between the top portion of the column and the coping part by a stiffness difference between the top portion of the column and the coping part. |
