Construction method of square steel-concrete combined portal pier

The invention discloses a construction method of a square steel-concrete combined type portal pier, which comprises the following steps of: hoisting and fixing a steel pier column, pouring concrete into a box chamber of the steel pier column, curing, mounting a steel cover beam on the steel pier column, and finally pouring the concrete into the steel cover beam. The pier column and the cover beam are both of a steel box structure, concrete is poured into the steel box, the steel-concrete combined type portal pier is formed, the requirements for safety and durability are met, the construction period is short, and the operation efficiency is greatly improved. 本发明公开了一种方形钢-混组合式门架墩的施工方法，首先进行钢墩柱的吊装和固定，然后在钢墩柱的箱室内浇筑混凝土并养护，然后在钢墩柱上安装钢盖梁，最后进行钢盖梁的混凝土浇筑。本发明的墩柱和盖梁均为钢箱结构，钢箱内灌注混凝土，形成钢-混组合式门架墩，满足安全和耐久性的需要，且施工周期短，大大提高了作业效率。