Anti-seismic buffering steel reinforced concrete column and construction method thereof

Abstract

According to the anti-seismic buffering steel reinforced concrete column and the construction method thereof, the solid steel ball is arranged in the steel pipe, the springs are fixedly connected to the six faces of the steel pipe respectively, and when an earthquake occurs, the solid steel ball and the springs can act synergistically to effectively absorb and dissipate earthquake energy; the spring connected with the solid steel ball up and down is fixed through a sealing plate and can bear vertical tension and compression deformation; the springs connected with the left and right and the front and back are directly fixed to the inner wall of the steel pipe, shearing force in the horizontal direction can be resisted, direct damage of an earthquake to the column body is remarkably reduced through the multi-direction anti-seismic mechanism, and the overall anti-seismic capacity of a building is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of building structures, and particularly relates to an earthquake-resistant buffer steel concrete column and a construction method thereof. Background Art

[0002] In the field of building structural engineering, seismic design is a key link to ensure the safety of buildings during earthquakes. Traditional building seismic isolation technology is mainly achieved through seismic isolation layers, that is, a seismic isolation layer consisting of seismic isolators (such as rubber seismic isolation bearings, sliding bearings, FPS friction pendulum sliding bearings) and damping devices is set between the foundation or lower part of the building and the upper structure. This technology isolates the transmission of seismic energy to the upper structure, reduces the seismic energy input to the upper structure, and at the same time extends the natural vibration period of the upper structure and reduces the seismic response, thereby achieving the purpose of seismic resistance and earthquake prevention.

[0003] These devices are expensive and the installation process is complicated, which leads to a significant increase in the overall project cost. In my country, the earthquake resistance standard of buildings is generally set at 6 to 9 degrees, while most parts of the country may not have experienced an earthquake in 50 years. If the standard is too high, the financial resources invested may become a waste, especially in areas with limited economic conditions, which cannot afford such high earthquake resistance costs. Summary of the invention

[0004] The invention provides an earthquake-resistant buffer steel concrete column and a construction method thereof, which are used to solve the problems of complex earthquake-resistant design and high cost in the prior art.

[0005] In the first aspect, the present invention provides a seismic-resistant and buffering steel-concrete column, which is composed of multiple seismic-resistant units, each seismic-resistant unit includes: a steel pipe, a solid steel ball, a spring and a sealing plate; the solid steel ball is arranged on the inner central axis of the steel pipe, and the top, bottom, left, right, front and back of the solid steel ball are respectively fixedly connected with springs, the other end of the spring connected to the left, right, front and back of the solid steel ball is vertically fixedly connected to the inner wall of the steel pipe, the other end of the spring connected to the top and bottom of the solid steel ball is respectively vertically fixedly connected to the sealing plate, and the top and bottom ends of the steel pipe are respectively fixedly connected to the sealing plate.

[0006] Compared with the prior art, the advantages of the present invention are as follows: the seismic-resistant and buffering steel-concrete column provided by the present invention has a solid steel ball arranged inside the steel pipe and springs fixedly connected on its six faces respectively. When an earthquake occurs, the solid steel ball and the spring can work together to effectively absorb and dissipate seismic energy; the springs connected to the solid steel ball above and below are fixed by sealing plates and can withstand vertical tensile and compressive deformation; the springs connected to the left and right and front and back are directly fixed to the inner wall of the steel pipe and can resist horizontal shear force. This multi-directional seismic-resistant mechanism significantly reduces the direct damage to the column by the earthquake and improves the overall seismic resistance of the building.

[0007] Furthermore, a plurality of earthquake-resistant units are vertically arranged in a manner perpendicular to the ground, and every two earthquake-resistant units are connected by a sealing plate.

[0008] Furthermore, the steel pipe and the sealing plate are corner welded.

[0009] Furthermore, the vector sum of the tension of the spring connected to the top of the solid steel ball and the pressure of the spring connected to the bottom of the solid steel ball is equal to the gravity of the solid steel ball, and the springs connected to the left, right, front and back of the solid steel ball are not subjected to force in the horizontal direction.

[0010] Furthermore, a top plate steel plate is fixedly connected to the top of the uppermost earthquake-resistant unit, and anchor bars are fixedly connected to the top surface of the top plate steel plate, and the anchor bars are used to connect to the concrete beams.

[0011] Furthermore, the bottom end of the lowest earthquake-resistant unit is fixedly connected with a bottom steel plate, and a foundation steel plate is also provided at the bottom of the bottom steel plate. The foundation steel plate is used to be embedded in the building foundation structure or beam slab.

[0012] Furthermore, the bottom steel plate and the anchor steel plate are connected by anchor bolts.

[0013] Further, the length of each seismic unit is 1000-1500 mm; and / or, The thickness of the top steel plate is 10~20mm; and / or, The diameter of the anchor bar is 20~28mm; and / or, The thickness of the bottom steel plate is 10~20mm; and / or, The thickness of the anchor steel plate is 15~20mm; and / or, The length of the anchor bolt is 600~900mm.

[0014] Furthermore, the number of seismic resistant units is 4.

[0015] In a second aspect, the present invention provides a construction method of the seismic buffer steel concrete column according to the first aspect, comprising the following steps: (1) First, carry out the layout measurement, embed the anchor steel plate in the building foundation structure or beam slab, and embed the anchor bolts at the same time; (2) Lift each steel pipe with a steel wire rope and lift it to the installation position by rotating it. After it is lifted into place, use a temporary connecting plate or clamp to fix the steel pipe for subsequent correction and welding work; (3) The bottom steel plate of the seismic unit is connected by pre-buried anchor bolts. The bolt tightening torque meets the design requirements, and each anchor bolt is fixed with two nuts; (4) Tie the steel bars on the outside of the steel pipe and pour concrete after acceptance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a seismic buffer steel concrete column provided by the present invention; Figure 2 It is a schematic diagram of the force of a solid steel ball in one embodiment of the present invention; Figure 3 It is a front view of the embedded anchor steel plate and anchor bolts in one embodiment of the present invention; Figure 4 It is a top view of the embedded anchor steel plate and anchor bolts in one embodiment of the present invention.

[0017] Description of reference numerals: 1. Solid steel ball; 2. Spring; 3. Anchor steel plate; 4. Anchor bolt; 5. Bottom steel plate; 6. Closing plate; 7. Anchor bar; 8. Top steel plate; 9. Steel pipe. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] First, see Figure 1~Figure 4 The present invention provides a seismic buffer steel-concrete column, which is composed of multiple seismic units, each of which includes: a steel pipe 9, a solid steel ball 1, a spring 2 and a sealing plate 6; the solid steel ball 1 is arranged on the inner central axis of the steel pipe 9, and the top, bottom, left, right, front and back of the solid steel ball 1 are respectively fixedly connected with springs 2, the other end of the spring 2 connected to the left, right, front and back of the solid steel ball 1 is vertically fixedly connected to the inner wall of the steel pipe 9, the other end of the spring 2 connected to the top and bottom of the solid steel ball 1 is respectively vertically fixedly connected to the sealing plate 6, and the top and bottom ends of the steel pipe 9 are respectively fixedly connected to the sealing plate 6.

[0020] The seismic-resistant buffer steel-concrete column provided by the present invention is configured with a solid steel ball 1 inside a steel tube 9 and springs 2 are fixedly connected on six surfaces thereof. When an earthquake occurs, the solid steel ball 1 and the spring 2 can work together to effectively absorb and dissipate seismic energy. The spring 2 connected to the solid steel ball 1 up and down is fixed by a sealing plate 6 and can withstand vertical tensile and compressive deformation. The spring 2 connected to the left and right and front and back is directly fixed to the inner wall of the steel tube 9 and can resist horizontal shear force. This multi-directional seismic-resistant mechanism significantly reduces the direct damage to the column by the earthquake and improves the overall seismic resistance of the building. At the same time, excellent seismic-resistant effect can be achieved only by the combination of the solid steel ball 1 and the spring 2, which significantly reduces the material cost and the construction cost. In addition, the main components of the seismic-resistant unit (such as the solid steel ball 1 and the spring 2) are located inside the steel tube 9, which are not easily affected by the external environment, have high durability, and require less maintenance, further reducing the long-term use cost.

[0021] The present invention is not only applicable to the seismic design of new buildings, but also can be used for seismic reinforcement of existing buildings. By adding seismic buffer steel concrete columns, the seismic performance of buildings can be significantly improved without large-scale changes to the original structure, and has broad application prospects.

[0022] In a specific embodiment, four seismic units are arranged vertically in a manner perpendicular to the ground, and every two seismic units are connected by a sealing plate 6. The steel pipe 9 and the sealing plate 6 are angle welded, and the solid steel ball 1 and the spring 2, the spring 2 and the steel pipe 9, and the spring 2 and the sealing plate 6 are all welded.

[0023] Furthermore, if Figure 2 As shown, the force of the solid steel ball 1 is shown in formula 1: F1+F2=G Formula 1 In the formula, F1 is the tension of spring 2 connected to the top of solid steel ball 1, F2 is the pressure of spring 2 connected to the bottom of solid steel ball 1, and G is the gravity of solid steel ball 1.

[0024] Among them, the vector sum of the tension of the spring 2 connected to the top of the solid steel ball 1 and the pressure of the spring 2 connected to the bottom of the solid steel ball 1 is equal to the gravity of the solid steel ball 1, and the spring 2 connected to the left, right, front and back of the solid steel ball 1 is not subjected to force in the horizontal direction.

[0025] It can be understood that the solid steel ball 1 is located on the internal central axis of the steel tube 9, ensuring uniform force distribution. By further limiting the arrangement of the spring 2, the steel ball maintains force balance under static conditions (the tensile pressure of the upper and lower springs 2 is balanced with the gravity of the solid steel ball 1, and the horizontal spring 2 is not subjected to force). It can respond quickly and restore balance under dynamic conditions of an earthquake, further ensuring the stability and safety of the structure.

[0026] Furthermore, the top of the uppermost seismic unit is fixedly connected to a top plate steel plate 8, the top surface of the top plate steel plate 8 is fixedly connected to anchor bars 7, and the anchor bars 7 are used to be connected to the concrete beam; the bottom end of the lowermost seismic unit is fixedly connected to a bottom steel plate 5, and a foundation steel plate 3 is also provided at the bottom of the bottom steel plate 5, and the foundation steel plate 3 is used to be pre-buried in the building foundation structure or beam plate; the bottom steel plate 5 and the foundation steel plate 3 are connected by anchor bolts 4.

[0027] In a specific embodiment, the length of each seismic unit is 1000~1500mm, the thickness of the top steel plate 8 is 10~20mm, the diameter of the anchor bar 7 is 20~28mm, the thickness of the bottom steel plate 5 is 10~20mm, the thickness of the anchor steel plate 3 is 15~20mm, and the length of the anchor bolt 4 is 600~900mm.

[0028] In a second aspect, the present invention provides a construction method of the seismic buffer steel concrete column according to the first aspect, comprising the following steps: (1) First, carry out the layout measurement, embed the anchor steel plate 3 in the building foundation structure or beam slab, and embed the anchor bolts 4 at the same time; (2) Each steel pipe 9 is hoisted with a steel wire rope, and the steel pipe 9 is hoisted to the installation position by a rotation method. After being hoisted into place, the steel pipe 9 is fixed with a temporary connecting plate or a clamp for subsequent correction and welding work; (3) The bottom steel plate 5 of the seismic unit is connected by the pre-buried anchor bolts 4. The bolt tightening torque meets the design requirements. Each anchor bolt 4 is fixed with two nuts. (4) Tie the steel bars on the outside of the steel pipe 9 and pour concrete after acceptance.

[0029] In a specific embodiment of the present invention, the construction method of the seismic buffer steel concrete column comprises the following steps: (1) Base layout: First, carry out layout measurement and embed a 15 mm thick positioning steel plate in the foundation or beam slab. The size of the steel plate is 800×800 mm, and the bolt length is 850 mm. At the same time, embed 8 anchor bolts 4.

[0030] (2) Lifting of steel pipe 9: Select a suitable lifting point to ensure the balance and stability of steel pipe 9 during the lifting process. Lift the steel pipe 9 with a steel wire rope and lift the column to the installation position by rotating. During the lifting process, the operation should be slow and smooth to avoid collision between the steel pipe 9 and the surrounding structure. After the steel pipe 9 is lifted into place, use a temporary connecting plate or clamp to fix it for subsequent correction and welding work.

[0031] (3) Installation of steel pipe 9: Connect with pre-buried high-strength bolts. Ensure that the installation position of the connecting plate is accurate and the bolt tightening torque meets the design requirements. Each bolt uses 2 nuts.

[0032] (4) Steel bar binding and concrete pouring: After the installation of the seismic buffer steel concrete column is completed, the steel bars on the outside of the steel pipe 9 are bound. Concrete pouring can only be carried out after acceptance.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the protection scope of the present invention.

Claims

1. A seismic buffer steel concrete column, characterized in that: It is composed of multiple seismic resistant units, each of which includes: a steel pipe, a solid steel ball, a spring and a sealing plate; the solid steel ball is arranged on the inner central axis of the steel pipe, and springs are fixedly connected to the top, bottom, left, right, front and back of the solid steel ball respectively, the other end of the spring connected to the left, right, front and back of the solid steel ball is vertically fixedly connected to the inner wall of the steel pipe, the other end of the spring connected to the top and bottom of the solid steel ball is vertically fixedly connected to the sealing plate respectively, and the top and bottom ends of the steel pipe are fixedly connected to the sealing plate respectively.

2. The seismic buffer steel concrete column according to claim 1, characterized in that: A plurality of earthquake-resistant units are vertically arranged in a manner perpendicular to the ground, and every two earthquake-resistant units are connected by a sealing plate.

3. The seismic buffer steel concrete column according to claim 2, characterized in that: The steel pipe and the sealing plate are welded by corner welding.

4. The seismic buffer steel concrete column according to claim 1, characterized in that: The vector sum of the tension of the spring connected to the top of the solid steel ball and the pressure of the spring connected to the bottom of the solid steel ball is equal to the gravity of the solid steel ball, and the springs connected to the left, right, front and back of the solid steel ball are not subjected to force in the horizontal direction.

5. The seismic-resistant and buffered steel-concrete column according to claim 4 is characterized in that: The top of the uppermost earthquake-resistant unit is fixedly connected with a top plate steel plate, and the top surface of the top plate steel plate is fixedly connected with anchor bars, which are used to be connected with the concrete beam.

6. The seismic buffer steel concrete column according to claim 5, characterized in that: The bottom end of the lowest earthquake-resistant unit is fixedly connected with a bottom steel plate, and a foundation steel plate is also arranged at the bottom of the bottom steel plate. The foundation steel plate is used to be embedded in the building foundation structure or beam slab.

7. The seismic-resistant and buffered steel-concrete column according to claim 6 is characterized in that: The bottom steel plate and the anchor steel plate are connected by anchor bolts.

8. The seismic-resistant and buffered steel-concrete column according to claim 7, characterized in that: The length of each seismic unit is 1000~1500mm; and / or, The thickness of the top steel plate is 10~20mm; and / or, The diameter of the anchor bar is 20~28mm; and / or, The thickness of the bottom steel plate is 10~20mm; and / or, The thickness of the anchor steel plate is 15~20mm; and / or, The length of the anchor bolt is 600~900mm.

9. The seismic buffer steel concrete column according to claim 8, characterized in that: The number of seismic units is 4.

10. A construction method for a seismic-resistant and buffered steel-concrete column according to any one of claims 1 to 9, characterized in that: The following steps are involved: (1) First, carry out the layout measurement, embed the anchor steel plate in the building foundation structure or beam slab, and embed the anchor bolts at the same time; (2) Lift each steel pipe with a steel wire rope and lift it to the installation position by rotating it. After it is lifted into place, use a temporary connecting plate or clamp to fix the steel pipe for subsequent correction and welding work; (3) The bottom steel plate of the seismic unit is connected by pre-buried anchor bolts. The bolt tightening torque meets the design requirements, and each anchor bolt is fixed with two nuts; (4) Tie the steel bars on the outside of the steel pipe and pour concrete after acceptance.

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