Fully-fabricated concrete-filled steel tube column base joint capable of being rapidly repaired

Abstract

The utility model relates to the technical field of engineering structures, in particular to a full-assembly type concrete filled steel tubular column base joint capable of being rapidly repaired, which comprises a reinforced concrete foundation, a splicing anchor bolt and a concrete filled steel tubular column, and the splicing anchor bolt comprises a special screw hole assembly and an upper end connecting screw rod which are pre-buried in the reinforced concrete foundation. The concrete-filled steel tube column comprises a concrete-filled steel tube column core with an end plate arranged at the bottom end, a crisscross anti-shearing piece connecting groove plate penetrating through a crisscross groove to be arranged in a long-strip-shaped hole, an energy consumption connecting piece wrapping the concrete-filled steel tube column core and an outer wrapping steel tube column wrapping the energy consumption connecting piece. By adopting the splicing of the concrete filled steel tubular column and the reinforced concrete foundation, all components are processed in a factory and can be assembled and connected on a construction site after being transported to the construction site, so that the field welding work and the template work are reduced, the field construction quality is ensured, and the building industrial assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering concrete structures, in particular to a fully assembled steel tube concrete column foot node which can be repaired quickly. Background Art

[0002] With the acceleration of the process of "construction industrialization and housing industrialization" in my country, the trend of residential industrialization is becoming increasingly obvious, and the construction of new prefabricated buildings is gradually expanding. The application of new prefabricated reinforced concrete structures has once again become one of the current research hotspots.

[0003] Steel tube concrete columns have the following basic characteristics: As a new type of composite structure, steel tube concrete structures can effectively play the advantages of both steel and concrete, are easy to construct, and are easy to assemble. They are being increasingly used in major engineering construction in my country, especially composite frames composed of steel tube concrete columns have been widely used in high-rise and super high-rise building structures, achieving significant technical, economic and social benefits. However, the existing steel tube concrete columns require a lot of welding and formwork work at the construction site, and the construction quality is difficult to guarantee and the efficiency is low. Summary of the invention

[0004] The utility model aims to provide a fully assembled steel tube concrete column base node that can be repaired quickly, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fully assembled steel tube concrete column base node that can be quickly repaired, comprising:

[0007] A reinforced concrete foundation, wherein a reserved cross hole is opened on the reinforced concrete foundation, and a shear connector is fixedly installed in the reserved cross hole by pouring a self-compacting cement base;

[0008] A splicing anchor bolt, the splicing anchor bolt comprising an upper connecting screw and a special screw hole assembly embedded in the reinforced concrete foundation, the special screw hole assembly comprising a through-core internally threaded steel sleeve, a lower-end embedded screw inserted in the through-core internally threaded steel sleeve, and a steel anchor plate fixed on the lower-end embedded screw by a nut;

[0009] A steel tube concrete column, comprising a steel tube concrete column core with an end plate at the bottom, a cross groove opened on the end plate, an elongated hole arranged at the bottom of the steel tube concrete column core, a cross shear member connecting groove plate passing through the cross groove and arranged in the elongated hole, an energy-absorbing connector wrapped on the steel tube concrete column core, and an outer steel pipe column wrapped on the energy-absorbing connector, wherein the energy-absorbing connector and the outer steel pipe column are connected to the steel tube concrete column core by inserting a through screw above the elongated hole, the upper end connecting screw sequentially passes through the outer steel pipe column, the energy-absorbing connector and the end plate and is inserted into the through internal threaded steel sleeve and is fixed by arranging a nut on the upper end connecting screw, and the cross shear member connecting groove plate is connected to the shear connector.

[0010] Preferably, the shear-resistant connectors are four steel plates with smooth surfaces, the four steel plates form a cross shape, and the surfaces of the steel plates are oiled.

[0011] Preferably, the energy-absorbing connector comprises energy-absorbing connector 1 and energy-absorbing connector 2, and the energy-absorbing connector 1 and energy-absorbing connector 2 are combined to wrap the bottom of the steel tube concrete column core.

[0012] Preferably, the steel tube concrete column core comprises an outer square steel tube and concrete inside the square steel tube.

[0013] Preferably, reinforcing steel bars are arranged around the special screw hole assembly.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model adopts the splicing of steel tube concrete columns and reinforced concrete foundations. All components are processed in the factory and can be assembled and connected on the construction site after being transported to the construction site, which reduces on-site welding and formwork work, ensures on-site construction quality, and improves the efficiency of industrialized building assembly.

[0016] 2. The force transmission of the column foot node developed by the utility model is clear. The shear connector is only used to resist the shear force of the node, and the spliced ​​anchor bolt is only used to resist the bending moment of the node, and both are detachable.

[0017] 3. The connection between the steel tube concrete column and the reinforced concrete foundation is easy to disassemble. When the steel tube concrete column needs to be dismantled and replaced, the upper connecting screw is unscrewed and the shear connector is taken out, and the steel tube concrete column can be dismantled and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2It is a schematic diagram of the explosion of the structure of the utility model;

[0020] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the steel tube concrete column core of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the splicing anchor bolt of the utility model.

[0023] In the figure: 1. reinforced concrete foundation; 2. reserved cross holes; 3. shear connector; 4. through-hole internal threaded steel sleeve; 5. embedded screw at the lower end; 6. steel anchor plate; 7. upper connection screw; 8. square steel pipe; 9. concrete; 10. energy dissipation connector 2; 11. energy dissipation connector 1; 12. outer steel pipe column; 13. cross shear connector connection groove plate; 14. long strip hole; 15. end plate; 16. cross groove; 17. through-hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 5 , the utility model provides a technical solution:

[0026] A fully assembled steel tube concrete column base node that can be quickly repaired, comprising:

[0027] A reinforced concrete foundation 1 is provided with a reserved cross hole 2, a shear connector 3 is arranged in the reserved cross hole 2, the shear connector 3 is formed by splicing four steel plates with smooth surfaces, and the four steel plates form a cross shape, which is used as the shear connector 3 to connect the reinforced concrete foundation 1, and the steel plate is oiled to reduce the bonding force between the steel plate and the self-compacting cement base poured in the reserved cross hole 2, so that the shear connector 3 is only used to resist the shear force of the node and is easy to disassemble and repair.

[0028] Splicing anchor bolts, the splicing anchor bolts include a special screw hole assembly embedded in the reinforced concrete foundation 1 and an upper connecting screw 7, the special screw hole assembly includes a through-core internal threaded steel sleeve 4, a lower embedded screw 5, and a steel anchor plate 6, the lower embedded screw 5 is screwed into the through-core internal threaded steel sleeve 4, the lower embedded screw 5 is fixedly connected to the through-core internal threaded steel sleeve 4, the steel anchor plate 6 is arranged on the lower embedded screw 5, and the steel anchor plate 6 is fixedly connected to the lower embedded screw 5 by arranging a nut on the lower embedded screw 5, the upper connecting screw 7 is used to be inserted into the through-core internal threaded steel sleeve 4 and fixed by arranging a nut on the upper connecting screw 7, and reinforcing steel bars are arranged around the special screw hole assembly so that the reinforcing steel bars wrap the special screw hole assembly.

[0029] A steel tube concrete column, the steel tube concrete column includes a steel tube concrete column core, an end plate 15, a cross groove 16, a long strip hole 14, a cross shear member connecting groove plate 13, an energy dissipation connector, and an outer steel tube column 12. The steel tube concrete column core includes an outer square steel tube 8 and concrete 9 poured in the square steel tube 8. The end plate 15 is arranged at the bottom of the square steel tube 8. The end plate 15 is fixedly connected to the square steel tube 8 by welding. A cross groove 16 is opened on the end plate 15. A long strip hole 14 is opened at the bottom of the side wall of the square steel tube 8. The cross shear member connecting groove plate 13 passes through the cross groove 16 and is installed in the long strip hole 14. The energy dissipation connector includes an energy dissipation connector 1 11 and an energy dissipation connector 2 10. The energy dissipation connector 1 11 and the energy dissipation connector 2 10 are each provided with 2, and the vertical The straight cross section is L-shaped. After the energy-absorbing connector 1 11 and the energy-absorbing connector 2 10 are spliced, they wrap the bottom end of the square steel tube 8 of the steel tube concrete column core. Two outer steel pipe columns 12 are provided. After the two outer steel pipe columns 12 are combined, the energy-absorbing connector is wrapped inside. The energy-absorbing connector and the outer steel pipe column 12 are connected to the steel tube concrete column core by inserting a through screw 17 into a screw hole opened on the side wall of the square steel tube 8 and above the long strip hole 14. Nuts are set at both ends of the through screw 17 to complete the fixation. The upper end connecting screw 7 passes through the screw holes opened on the outer steel pipe column 12, the energy-absorbing connector and the end plate 15 in turn, and is inserted into the through internal threaded steel sleeve 4 and fixed by setting a nut and a pad on the upper end connecting screw 7. The cross shear member connecting groove plate 13 is used to be sleeved on the shear connector 3 to sleeve the shear connector 3.

[0030] Working principle: When in use, insert the shear connector 3 into the reserved cross hole 2 on the reinforced concrete foundation 1, and pour the self-compacting cement base into the reserved cross hole 2 after installing the shear connector 3, and then install the energy dissipation connector 1 11, the energy dissipation connector 2 10, and the outer steel pipe column 12 on the square steel pipe 8 of the steel tube concrete column core in sequence, insert the through screw 17 and tighten the nut, weld the cross shear connector connection groove plate 13 into the long strip hole 14, and complete the assembly of the steel tube concrete column. Then, hoist the prefabricated steel tube concrete column to a fixed position, insert the shear connector 3 into the cross hole 14, and then install the shear connector 3 into the cross hole 14. The cross shear-resistant parts are connected in the groove plate 13, and then the upper connecting screw 7 is passed through the outer steel pipe column 12, the energy-absorbing connector and the end plate 15 and then screwed into the upper end of the through-core internal threaded steel sleeve 4 to form a splicing anchor bolt, thereby completing the connection between the steel tube concrete column and the reinforced concrete foundation 1; when the steel tube concrete column needs to be repaired, the upper connecting screw 7 can be screwed out, the nut on the through-core screw 17 can be unscrewed, the outer steel pipe column 12 and the energy-absorbing connector can be taken out in turn, the self-compacting cement base in the cross hole 2 reserved in the reinforced concrete foundation 1 can be cleared, the shear-resistant connector 3 can be taken out, and the steel tube concrete column can be disassembled and replaced.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully assembled steel tube concrete column base node that can be quickly repaired, characterized in that: include: A reinforced concrete foundation, wherein a reserved cross hole is opened on the reinforced concrete foundation, and a shear connector is fixedly installed in the reserved cross hole by pouring a self-compacting cement base; A splicing anchor bolt, the splicing anchor bolt comprising an upper connecting screw and a special screw hole assembly embedded in the reinforced concrete foundation, the special screw hole assembly comprising a through-core internally threaded steel sleeve, a lower-end embedded screw inserted in the through-core internally threaded steel sleeve, and a steel anchor plate fixed to the lower-end embedded screw by a nut; and A steel tube concrete column, comprising a steel tube concrete column core with an end plate at the bottom, a cross groove opened on the end plate, an elongated hole arranged at the bottom of the steel tube concrete column core, a cross shear member connecting groove plate passing through the cross groove and arranged in the elongated hole, an energy-absorbing connector wrapped on the steel tube concrete column core, and an outer steel pipe column wrapped on the energy-absorbing connector, wherein the energy-absorbing connector and the outer steel pipe column are connected to the steel tube concrete column core by inserting a through screw above the elongated hole, the upper end connecting screw sequentially passes through the outer steel pipe column, the energy-absorbing connector and the end plate and is inserted into the through internal threaded steel sleeve and is fixed by arranging a nut on the upper end connecting screw, and the cross shear member connecting groove plate is connected to the shear connector.

2. A fully assembled steel tube concrete column base node capable of rapid repair according to claim 1, characterized in that: The shear-resistant connectors are four steel plates with smooth surfaces, the four steel plates form a cross shape, and the surfaces of the steel plates are oiled.

3. A rapidly repairable fully assembled steel tube concrete column base node according to claim 1, characterized in that: The energy-absorbing connector comprises energy-absorbing connector 1 and energy-absorbing connector 2, and the energy-absorbing connector 1 and energy-absorbing connector 2 are combined to wrap the bottom of the steel tube concrete column core.

4. A rapidly repairable fully assembled steel tube concrete column base node according to claim 1, characterized in that: The steel tube concrete column core comprises an outer square steel tube and concrete inside the square steel tube.

5. The quickly repairable fully assembled steel tube concrete column base node according to claim 1, characterized in that: Reinforced steel bars are arranged around the special screw hole assembly.

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