Steel pipe concrete frame with prestressing tendons and construction method thereof

Abstract

The invention relates to a steel pipe concrete frame with prestressing tendons and a construction method thereof. The steel pipe concrete frame with the prestressing tendons is formed by connecting composite columns with composite beams through joints. The composite beams are horizontally arranged among the composite columns. The joints are outer sleeving integral type joints internally filled with self-compacting concrete. The composite columns are sectional-type steel pipe concrete composite columns with built-in profile steel. The composite beams are internal-prestress I-shaped steel pipe concrete composite beams. The prestressing tendons arranged in the composite beams bypass joint outer pipes from upper strengthening annular plates with cavities. The prestressing tendons are positioned through single-hole positioning plates and hole-formed double-hole main positioning plates, form symmetrical curve shapes and achieve tensioning and anchoring at joint end beams. The self-compacting fine stone concrete of the composite beams and self-compacting fine stone concrete of the joint end beams are through and form a whole with the joint outer pipes after curing. The problem that beam-column connecting joints of a novel steel pipe concrete frame with prestressing tendons are complex and liable to damage is solved.

Description

technical field [0001] The invention relates to a building frame structure in the field of civil engineering structures, in particular to a steel pipe concrete frame equipped with prestressed tendons and a construction method thereof. Background technique [0002] In the conventional reinforced concrete frame structure system, the frame joints are mostly reinforced concrete cast-in-place joints. This kind of reinforced concrete joints needs formwork, binding steel bars and then pouring concrete like frame beams and columns. Not only the bearing capacity of the components is low, but the construction period is long. Moreover, the nodes are prone to damage under the action of earthquakes. With the rapid development of the civil construction industry, steel tube concrete structures are widely used in long-span, heavy-duty and super high buildings. The steel tube concrete frame with prestressed tendons is a new structural form of steel tube concrete structures. The concrete-fil...

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Problems solved by technology

[0003] An object of the present invention is to provide the concrete-filled steel tube frame that joins prestressed tendon, and this steel tube concrete frame that joins prestressed tendon is used to solve the problem that the beam-column connection node of the new type frame of steel pipe concrete with prestressed tendon is complex and easy to break, and at the same time It solves the thorny problem of difficult positioning of prestressed tendons in closed steel pipes. Another object of the present invention is to provide a construction method for such a steel pipe concrete frame equipped with prestressed tendons

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