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CN-119392863-B - Concrete beam column structure with thin-wall steel tubes locally arranged inside and installation method thereof

CN119392863BCN 119392863 BCN119392863 BCN 119392863BCN-119392863-B

Abstract

The invention belongs to the technical field of concrete beam column structures, and particularly relates to a beam column structure with thin-wall steel tubes locally arranged inside and an installation method thereof. Through reasonable configuration of the internally-arranged steel pipes and the steel bars, the effects of reducing the dead weight of the structure and improving the bearing capacity are achieved. The application of the steel pipe not only enhances the bending resistance and the shearing resistance of the concrete member, but also effectively delays the generation and the expansion of cracks. In addition, the steel pipe has high strength and rigidity, so that the structure can be kept stable under the condition of high load, and the steel pipe is particularly suitable for occasions needing high bearing capacity, such as bridges, buildings and the like. The stress characteristics of the beam column members are fully considered, and a novel design method of the internally-matched steel pipe concrete is provided. Through detailed analysis of construction details and working principles, a person skilled in the art can implement the invention according to the description, thereby effectively improving the safety and economy of the engineering structure. Is used for improving the shearing resistance, the bending resistance and the overall stability of the structure.

Inventors

  • HU XIAOPENG
  • FU QIANG
  • Zhong shuai
  • ZHANG HANG
  • YANG BO
  • ZHAO TIANSONG

Assignees

  • 西安建筑科技大学

Dates

Publication Date
20260512
Application Date
20241129

Claims (8)

  1. 1. A concrete beam column structure with thin-wall steel pipes locally arranged inside is characterized in that thin-wall steel pipes (1) are arranged at core positions in the beams and columns, end wing rings (5) are arranged at two ends of each thin-wall steel pipe (1), connecting reinforcing ribs (6) are welded on the end wing rings (5), steel bars (2) are arranged on the thin-wall steel pipes (1), the steel bars (2) penetrate through the end wing rings (5) at two ends of each thin-wall steel pipe (1), concrete is poured on the periphery of each thin-wall steel pipe (1), pegs (4) are arranged on the periphery of each thin-wall steel pipe (1), the thin-wall steel pipes (1) are tightly connected with surrounding concrete through the pegs (4), original holes are formed in the positions, corresponding to the steel bars (2), of the upper ends and the lower ends of the end wing rings (5) at two ends of each thin-wall steel pipe (1), steel wires (10) are fixedly arranged on the end wing rings (5) through welding, and the steel wires (2) at the upper portions and the lower portions of the thin-wall steel pipes (1) penetrate through the end wing rings (5) through the steel wires (10) from the round holes.
  2. 2. The beam column structure of the local internal thin-wall steel tube according to claim 1, wherein the thin-wall steel tube (1) is made of Q355 steel by adopting a high-frequency coiled plate welding process.
  3. 3. The concrete beam column structure with the thin-walled steel pipes locally arranged inside according to claim 2 is characterized in that one end of the outer side of the thin-walled steel pipe (1) is provided with a filler inlet pipe (8), and the other end is provided with an overflow pipe (9).
  4. 4. The concrete beam column structure with the thin-walled steel pipes locally built in according to claim 2 is characterized in that the pegs (4) on the thin-walled steel pipes (1) are uniformly distributed along the length direction of the thin-walled steel pipes (1), the length of each peg (4) is 6cm, and the diameter of each peg (4) is not smaller than 1cm.
  5. 5. A concrete beam column structure of a partially internally-fitted thin-walled steel pipe according to claim 1, characterized in that the reinforcing bars (2) are provided at the upper and lower portions of the thin-walled steel pipe (1).
  6. 6. The concrete beam column structure with the thin-walled steel pipes locally arranged inside according to claim 1 is characterized in that the outer sides of the steel bars (2) on the upper side and the lower side of the thin-walled steel pipes (1) are fixed through a plurality of stirrups (3).
  7. 7. A beam-column structure of a partially internally-fitted thin-walled steel pipe according to claim 6, characterized in that the connection between the steel bars (2) is by extrusion through a bar sleeve (7).
  8. 8. A method for installing a concrete beam-column structure with a partially built-in thin-wall steel pipe, based on the beam-column structure with a partially built-in thin-wall steel pipe (1) as claimed in any one of claims 1 to 7, characterized in that end wing rings (5) are installed at two ends of the thin-wall steel pipe (1), connecting reinforcing ribs (6) are outwards extended by welding outside the end wing rings (5) at two ends of the thin-wall steel pipe (1), reinforcing bars (2) are arranged at the upper part and the lower part of the thin-wall steel pipe (1), and the beam and the column are connected and fixed at a connecting node through the reinforcing bars (2).

Description

Concrete beam column structure with thin-wall steel tubes locally arranged inside and installation method thereof Technical Field The invention belongs to the technical field of concrete beam column structures, and particularly relates to a concrete beam column structure with thin-wall steel tubes locally arranged inside and an installation method thereof. Background The reinforced concrete structure has undergone many innovations since the birth, and various novel structural forms are gradually evolved, such as combined structures of an internal-matched steel reinforced concrete structure, an external-covered thin-wall steel pipe concrete structure and the like, and box structures of box beams, hollow pier columns and the like. The advent of these new structures has created new opportunities for development in traditional concrete structures. The local internal thin-wall steel tube concrete structure studied in the text is an innovative form and aims to improve the overall performance and the economy through the improvement of structural design. At present, in the aspect of research on the bearing performance of an internally-arranged thin-wall steel tube concrete beam, students at home and abroad have initially explored, but the research is still in a starting stage. The research is mainly focused on bending-resistant bearing performance, and the result shows that the internally-matched thin-wall steel pipe concrete beam has higher ductility, and the thickness of the thin-wall steel pipe, the reinforcement ratio of longitudinal ribs and whether the bending resistance of the beam is obviously influenced by internally-filled concrete. For example, cai Jian performs a bending test of a plurality of internal thin-walled steel pipe concrete beams, and establishes a corresponding calculation method. Jie Hengyan further shows that the internal thin-wall steel tube concrete beam has strong deformability and high bending rigidity. However, the research on the shear performance of the beam is not developed, and the calculation method and design theory of the shear bearing capacity are still blank. Compared with the research of the beam, the research of the bearing performance of the internally-matched thin-wall steel tube concrete column is more scarce, and almost no related experimental data and theoretical results exist. However, the reinforced concrete hollow pier column similar to the structural characteristics thereof has been widely applied in bridge engineering, and the research results thereof can provide references for the project. Related researches show that the box section has larger moment of inertia and torsional rigidity, and compared with a solid column with the same volume, the ultimate bearing capacity, ductility and energy consumption capacity of the box section column are obviously improved. Furthermore, studies of partially prefabricated steel reinforced concrete columns have shown that the load-bearing capacity and stiffness of solid columns are generally higher than that of hollow columns, particularly at large biases, where the bending stiffness of hollow columns is significantly lower. These results provide a reference for the design of internally-matched thin-walled steel pipe concrete columns, but still require more experiments to perfect the bearing capacity calculation method. Disclosure of Invention The invention provides a beam column structure with a thin-wall steel tube locally arranged inside and an installation method thereof, which are used for solving the technical problems that the defect position in the thin-wall steel tube cannot be accurately positioned, the defect needs to be marked manually and the defect at the high position in the thin-wall steel tube cannot be marked in the prior art. In order to achieve the above purpose, the invention adopts the following technical scheme: a concrete beam column structure with thin-wall steel pipes locally arranged in the beam and column is characterized in that the thin-wall steel pipes are arranged in core positions in the beam and column, end wing rings are arranged at two ends of the thin-wall steel pipes, connecting reinforcing ribs are welded on the end wing rings, reinforcing steel bars are arranged on the thin-wall steel pipes, and the reinforcing steel bars penetrate through the end wing rings at two ends of the thin-wall steel pipes. The thin-wall steel pipe is manufactured by adopting a high-frequency coiled plate welding process, and the material is Q355 steel. One end of the outer side of the thin-wall steel pipe is provided with a filler inlet pipe, the other end is provided with an overflow pipe. Concrete is poured on the periphery of the thin-wall steel pipe, pegs are arranged on the periphery of the thin-wall steel pipe, and the thin-wall steel pipe is tightly connected with the surrounding concrete through the pegs. The pegs on the thin-wall steel pipe are uniformly distributed along the length direction of the thin-