Column core concrete lift-up connecting device of steel pipe column

Abstract

The invention relates to a column core concrete lift-up connecting device of a steel pipe column, belonging to the technical field of building construction. The device comprises an elbow with a horizontal port and an upwarping port. A one-way valve cover is installed at the higher side of the upwarping port of the elbow through a hinge, and the higher side of the upwarping port extends into the steel pipe column from the lower part of the steel pipe column; the horizontal port of the elbow is connected with a pumping line, and the pumping line is provided with a stop valve with a plug-in board. When the device works, the upwarping end extends into the steel pipe column, but not clings to the pipe wall of the steel pipe column, therefore, concrete is pumped out by a pipe core with favorable pouring effect; a one-way valve and the stop valve prevent the concrete from flowing backwards respectively at the inside and the outside of the steel pipe column, and therefore, the invention fulfills a function of double insurance, is reliable, also has favorable sealing effect and can keep the lift-up pressure; and when the pressure in a pipe is larger, the one-way valve firstly shares the pressure, thereby efficiency avoiding overflowing of the concrete at the stop valve, therefore, the invention is particularly suitable for pouring the higher steel pipe column.

Description

technical field [0001] The invention relates to a concrete pouring pipeline connection device, in particular to a steel pipe column column core concrete jacking connection device, which belongs to the technical field of building construction. Background technique [0002] Concrete-filled steel tube columns are widely used in steel structures due to their smooth shape, good structural mechanical performance, and economical cross-sectional dimensions. Concrete filled steel pipe is a new type of combined structure formed by filling concrete into steel pipes. It is constructed by the pumping jacking method of opening temporary pouring holes in the lower part of the pipe column and pouring concrete from bottom to top with a concrete pump. The pumping jacking method is adopted for construction, and no vibration is required during the concrete pouring process, which can save a lot of concrete labor and machinery. Since the concrete is lifted up from the column root and poured in r...

AI Technical Summary

Problems solved by technology

Practice has proved that the above-mentioned existing concrete jacking connection device still has the following main disadvantages in use: 1) the anti-backflow device of the inserting plate is not only easy to leak air, which affects the jacking pressure, but also tends to overflow when the pressure is high; 2) the inserting plate device Can not be dismantled and reused, resulting in waste

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