Precast concrete beam and square-rectangular concrete-filled steel tube column combining joint employing unbonded prestressed and ordinary reinforcement for connection
A technology of reinforced concrete beams and precast concrete, which is applied in the direction of buildings and building structures, and achieves the effects of broad application prospects, guaranteed reliability and huge economic benefits.
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Embodiment 1
[0024] The composite joint structure of precast concrete beams with circular steel tube concrete columns connected by unbonded prestress and ordinary steel bars is as follows: figure 1 Shown:
[0025] 1. Manufacture of square and rectangular steel pipe concrete and reinforced concrete beams
[0026] Square rectangular concrete-filled steel tube columns (1) and reinforced concrete beams (2) are produced in the factory in strict accordance with relevant specifications and drawings, and 6 corresponding channels are reserved during prefabrication, and the inner diameter of the channels is 10mm larger than that of the unbonded prestressed tendons (3) , the metal bellows (7) is pre-embedded in the tunnel near the upper and lower sections of the beam, and the ring plate (5) and channel steel (6) are welded by surrounding welding at the connecting beam on the square rectangular concrete filled steel tube column (1).
[0027] 2. Assembly of beam-column joints
[0028] After the squar...
Embodiment 2
[0036] See when it is a side column node figure 2 , other measures are the same as in embodiment 1, except that at the end of the side column, the ring plate (5) can be used as a pressure plate for unbonded prestressed steel bar (3) when it is stretched, and the common steel bar (4) can also be worn behind ) to be welded on this ring plate to meet the anchoring requirements of the post-piercing steel bars.
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