Steel member outer wrapping prestress prefabricated concrete reinforcing structure and construction method
A prefabricated concrete and reinforced structure technology, which is applied in building construction, building maintenance, construction, etc., to achieve the effects of improving torsional performance and local stability, improving utilization rate, and improving stability
Active Publication Date: 2021-11-30
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology
However, the current methods of strengthening steel beams are limited to traditional methods such as pasting welded steel plates on the outside of the flange and changing the I-shaped section to a box-shaped section. Rigidity, its structural form has not changed, and there are many structural disadvantages that cannot be avoided
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[0032] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.
[0033] like figure 1 and figure 2 As shown, the present invention is a steel component outsourcing prestressed precast concrete reinforcement structure, which utilizes prefabricated prestressed concrete strips 1 to reinforce the I-beam 2, wherein the prestressed concrete strips 1 are symmetrically arranged on the upper and lower sides of the I-beam 2. between the flanges. It is easy to understand that the prestressed concrete bar 1 should generally be in the shape of a rectangular parallelepiped.
[0034] The side of the prestressed concrete strip 1 close to the web of I-beam 2 is defined as the inner side, the side away from the web of I-beam 2 is the outer side, the side close to the upper flange of I-beam 2 is the upper side, and the side close to the I-beam 2 is the upper side. One side of the lower flange of steel 2 is the lower...
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The invention provides a steel member outer wrapping prestress prefabricated concrete reinforcing structure. The steel member outer wrapping prestress prefabricated concrete reinforcing structure comprises a prefabricated prestress concrete strip, wherein the prestress concrete strip is arranged between an upper flange and a lower flange of I-shaped steel, an upper gap is reserved between the prestress concrete strip and the upper flange, a lower gap is reserved between the prestress concrete strip and the lower flange, and the upper gap and the lower gap are filled with filler; and a first hole is formed in a web of the I-shaped steel, a second hole corresponding to the first hole is formed in the prestress concrete strip, and a transverse prestress rib penetrates the first hole and the second hole to be connected with the prestress concrete strip and the I-shaped steel. By means of the steel member outer wrapping prestress prefabricated concrete reinforcing structure, the bearing capacity and rigidity of the structure can be improved, the ductility and the crack resistance of the structure are improved, and meanwhile the fire resistance and the torsion resistance of the structure are improved. The invention further provides a corresponding construction method, prefabricated concrete can be in tight contact with the upper flange and the lower flange of the structural steel, and the structural performance is guaranteed.
Description
technical field [0001] The invention belongs to the technical field of construction, and particularly relates to a steel component outsourcing prestressed precast concrete reinforcement structure and a construction method. Background technique [0002] At present, I-shaped or welded H-shaped steel beams and steel columns have been widely used in industrial and civil buildings. Due to improper design, construction and use management, the material quality does not meet the requirements, the use function changes, disaster damage and insufficient durability, etc. For this reason, reinforcement design of steel beams is required. However, the current reinforcement methods of steel beams are only limited to traditional methods such as welding steel plates on the outside of the flanges, changing the I-shaped section to box-shaped section, etc. The essence is to increase the bearing capacity and increase the bearing capacity by increasing the section of the original structural member...
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Login to View More IPC IPC(8): E04G23/02
CPCE04G23/0218E04G23/0244
Inventor 杨勇贺九洲于云龙薛亦聪冯世强王钰强陈辛郝宁
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY