The invention provides an
assembly type prestressed steel
pipe concrete column-column connection mode and belongs to the technical field of
structural engineering. A connection device comprises a lower column, an upper column, a lower cover plate, an upper cover plate, lower column lifting hooks and prestressed cables. The lower column is provided with two lower column lifting hooks, and the lower column lifting hooks are welded to the two inner surfaces of the upper end of the lower column respectively, play a positioning role in the lifting process of the upper column and play a role in strengthening a joint area after the upper column is lifted. After lifting is completed,
cement paste is pumped upwards through reserved holes in the lower cover plate, so that the upper and lower columns are filled with the
cement paste. Connection with certain strength is achieved by filling the columns with the
cement paste. The connection part of the columns is located near a contraflexure point so that the
shear capacity of the columns can be improved by pouring the
cement paste. The prestressed cables are fixed through the upper and lower columns, the deformation performance and the compressional stiffness of the columns are improved, the tensile strength of the columns is obviously improved,
assembly between structural die blocks is achieved,
assembly speed of the members is increased, the assembly quality of the members is improved, and the connection mode sufficiently meets requirements of an assembly type steel
structure system and sufficiently adapts to characteristics of the assembly type steel
structure system. Through the assembly type prestressed steel
pipe concrete column-column connection mode, the construction speed is greatly increased, the construction quality is greatly improved, and the column-column connection mode adapts to the development of assembly type
steel structures.