Core constraint type open-spandrel section steel concrete combination column and manufacturing method

A core constraint type open-spandrel section steel concrete combination column comprises vertical section steel, steel lacing pieces, spiral stirrups, longitudinal steel bars, square hoops and concrete. According to the core constraint type open-spandrel section steel concrete combination column, a spiral steel bar cage is arranged in the core of a normal open-spandrel section steel concrete column, and the spiral steel bar cage is formed by binding of the spiral stirrups and the longitudinal steel bars. The spiral steel bar cage produces the constraint effect on the core concrete, and takes mutual effects with the section steel to form composite constraints to the concrete inside the combination column, the problem of weaker constraint to the concrete of the open-spandrel section steel concrete column is improved, and compression resistance and bearing performance and anti-seismic performance of the combination column are improved.