Self-resetting inorganic adhesive composite bamboo-steel combined section earthquake-resistant column and manufacturing method thereof

Abstract

The invention relates to the field of earthquake-resistant building structures, and in particular to a self-resetting inorganic adhesive composite bamboo-steel combined cross-section earthquake-resistant column and a manufacturing method thereof, comprising an inorganic adhesive composite bamboo, a steel section, an anchor bolt, a steel adhesive, a steel strand and an anchor; the inorganic adhesive composite bamboo is symmetrically cut along the centroid of the column section, and slots and composite bamboo circular holes are arranged on the side of the inorganic adhesive composite bamboo along the length direction of the inorganic adhesive composite bamboo; the anchor bolts are uniformly welded on the web of the steel section at set intervals; the web is inserted into the slots, the anchor bolts are inserted into the composite bamboo circular holes, and the contact surfaces of the steel section and the inorganic adhesive composite bamboo and the anchor bolts and the inorganic adhesive composite bamboo are both adhered by the steel adhesive; the steel strand passes through the hole in the middle of the steel section, and is anchored by the anchor after applying a pre-tension.

Description

Technical Field

[0001] The invention relates to the field of earthquake-resistant building structures, and in particular to a self-resetting inorganic adhesive composite bamboo-steel combined cross-section earthquake-resistant column and a manufacturing method thereof. Background Art

[0002] Columns are important vertical load-bearing components in building structures. Currently available columns include concrete columns, steel columns, and inorganic glue composite bamboo-wood columns; among them, inorganic glue composite bamboo-wood columns are mainly formed by bonding inorganic glue with bamboo-wood materials. For specific structural forms, reference can be made to existing patents CN116856619A, CN116480009A, CN113006279A, etc.; however, the current manufacturing technology of inorganic glue composite bamboo-wood columns is not very mature, and the cross-sectional size of inorganic glue composite bamboo is limited by the processing mold. The maximum cross-sectional size currently produced by the factory is 400mm×400mm, and the maximum length is 3600mm, which is not conducive to the application of inorganic glue composite bamboo materials in medium and high-rise structures.

[0003] Some steel-bamboo composite column components have also appeared in the prior art. For example, in patent CN213015001U, a steel-bamboo composite column component is disclosed, which aims to effectively improve the bearing capacity of vertical components in bamboo-wood buildings. By built-in I-beams, the upper flange steel plate and the lower flange steel plate are symmetrically arranged on both sides of the steel web, and double-sided fillet welds are used between the steel materials. The bamboo side panels and bamboo boards are located at the outermost side of the steel-bamboo composite column component and are connected by screws. The upper flange steel plate and the lower flange steel plate are connected to the bamboo board by screws. The steel web and the bamboo side panels are connected by nuts and screws. The bolts and screws connect the various parts of the plate into a whole and play a reinforcing role. However, the existing steel-bamboo composite columns, on the one hand, are in the form of four bamboo panels spliced ​​on steel sections, which require a large number of bolts to connect and fix. The integrity of the composite columns is poor, and they cannot form an effective constraint on the steel sections. The internal steel sections are prone to buckling failure and the construction is complicated. On the other hand, under the horizontal load of an earthquake, their seismic performance is relatively poor, and they have no self-resetting performance, resulting in poor post-earthquake repairability. Summary of the invention

[0004] In order to solve the technical problems existing in the prior art and promote the engineering application of inorganic adhesive composite bamboo materials, the present invention discloses a self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column and a manufacturing method thereof. Through the cross-sectional form of the inorganic adhesive composite bamboo and the steel section, not only a larger cross-sectional size can be obtained, but also the bearing capacity of the component can be improved, which is an effective way to solve the cross-sectional size problem of the inorganic adhesive composite bamboo component. At the same time, by applying prestressed steel strands in the composite cross-sectional column, the earthquake resistance and self-resetting performance of the steel-bamboo composite cross-sectional column can be greatly improved.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] In the first aspect, the present invention proposes a self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column, the specific structure of which is as follows:

[0007] It includes inorganic adhesive composite bamboo, steel section, anchor bolt, steel adhesive, steel strand and anchor; the inorganic adhesive composite bamboo is cut symmetrically along the centroid of the column section, and along the length direction of the inorganic adhesive composite bamboo, composite bamboo inner grooves and composite bamboo circular holes are arranged on the opposite sides of the two inorganic adhesive composite bamboos after cutting; the steel section is cross-shaped, and a through hole is arranged at its center along its axial direction, anchor bolts are welded on one pair of oppositely arranged webs, the anchor bolts are inserted in the composite bamboo circular holes, and the other pair of webs are inserted in the composite bamboo inner grooves, and the contact surface between the steel section and the inorganic adhesive composite bamboo and the contact surface between the anchor bolt and the inorganic adhesive composite bamboo are all adhered by steel adhesive; the steel strand passes through the through hole in the middle of the steel section, and is anchored by the anchor after pre-tension is applied at both ends of the steel strand.

[0008] The above-mentioned self-resetting inorganic adhesive composite bamboo-steel composite cross-section seismic column can not only make up for the size shortcomings of the inorganic adhesive composite bamboo material, but also give full play to the respective advantages of steel and composite bamboo materials; at the same time, the self-resetting technology can be applied to the steel-bamboo composite cross-section column to solve the seismic performance problems and post-earthquake repairability problems of the self-resetting inorganic adhesive composite bamboo-steel composite cross-section seismic column.

[0009] Preferably, the steel section is made of steel with a strength of Q235 or above.

[0010] Preferably, the thickness of the steel section is greater than or equal to 6 mm, and the thickness of the steel section is actually determined comprehensively based on the size and bearing capacity requirements of the composite section column.

[0011] Preferably, the anchor bolt is made of steel with a strength of Q235 or above. The anchor bolt is not limited to a smooth circular cross-section steel rod, and can be a circular cross-section screw with threads.

[0012] Preferably, the thickness of the adhesive layer is not less than 2.0 mm, and the recommended thickness of the adhesive layer is between 2.0 mm and 3.0 mm.

[0013] Preferably, the anchor bolt diameter ranges from 8mm to 16mm, and the anchor bolt diameter should be determined according to the cross-sectional size of the composite section column; the length of the anchor bolt should be determined according to the actual size of the composite section column, and the distance between the anchor bolt end and the composite bamboo surface is greater than 40mm; the anchor bolt spacing is 200mm to 500mm, and the anchor bolt spacing is determined according to different column lengths.

[0014] Preferably, the steel bonding glue is organic steel bonding glue.

[0015] Preferably, the diameter of the steel strand is not less than 10 mm.

[0016] Preferably, the cross-section of the middle hole of the steel section can be square or circular.

[0017] Preferably, the cross-section of the inorganic adhesive composite bamboo is a rectangular, circular or polygonal cross-section.

[0018] In a second aspect, the present invention also provides a method for manufacturing a novel self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column, comprising the following steps:

[0019] Step S1: prefabricate and process the steel and anchor bolts, and weld the anchor bolts at a set distance on both sides of the steel web to ensure that the anchor bolts are perpendicular to the steel web.

[0020] Step S2: prefabricate and process the new inorganic adhesive composite bamboo raw material, cut and obtain composite bamboo materials of the required size for the combined cross-section column, and groove and drill holes in the composite bamboo according to the size of the steel section and the anchor bolt.

[0021] Step S3: evenly apply the steel adhesive to the welded steel sections and anchor bolt surfaces, and apply the steel adhesive to the splicing surface of the inorganic adhesive composite bamboo that has been cut and grooved.

[0022] Step S4: installing the steel section with anchor bolts in the pre-grooved half of the inorganic adhesive composite bamboo, and then splicing the other half of the inorganic adhesive composite bamboo.

[0023] Step S5: Compact the assembled composite section column by equipment, and wait for the initial setting of the steel adhesive for curing.

[0024] Step S6: After the curing is completed, the steel strand is passed through the middle steel pipe of the composite column, and after the set prestress is applied, the prestressed steel strand is anchored by an anchor, so as to obtain a self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column.

[0025] The beneficial effects of the present invention are:

[0026] The present invention combines inorganic adhesive composite bamboo material and steel profile, and can make use of the advantages of the mechanical properties of the combined cross-section components to make up for the performance defects of the inorganic adhesive composite bamboo and the steel profile, and can give full play to the performance advantages of the two materials, work together, and form complementary advantages. The steel profile serves as an intermediate medium, which can not only effectively splice the inorganic adhesive composite bamboo together to increase the cross-sectional area of ​​the inorganic adhesive composite bamboo, but also improve the bearing capacity of the inorganic adhesive composite bamboo. The inorganic adhesive composite bamboo material used has excellent fire resistance, which can not only provide fire protection for the steel profile inside the self-resetting inorganic adhesive composite bamboo-steel combined cross-section seismic column, but also provide annular constraints for the internal steel profile to prevent the steel profile from buckling and failure under the action of vertical load, and ensure that the bearing capacity of the steel profile is fully utilized. The anchor bolts welded on the steel profile can enhance the integrity of the self-resetting inorganic adhesive composite bamboo-steel combined cross-section seismic column, effectively prevent the steel profile and the composite bamboo from directly sliding relative to each other, and enhance the ability of the steel profile and the inorganic adhesive composite bamboo to work together.

[0027] Another advantage of the present invention is that by applying prestressed steel strands to the composite cross-section column through the steel pipe in the middle of the steel section, the seismic resistance and post-earthquake repairability of the inorganic adhesive composite bamboo-steel composite column can be significantly improved.

[0028] Another advantage of the present invention is that the steel section and the inorganic adhesive composite bamboo are completely butt-jointed and assembled, and are directly and tightly combined together by gluing steel glue without any additional connection process, which can reduce the construction process and improve the prefabrication construction efficiency of the composite section column.

[0029] Another advantage of the present invention is that the anchor bolts welded on the steel section can strengthen the tie between the steel section and the inorganic adhesive composite bamboo, reduce the slip between the steel section and the inorganic adhesive composite bamboo, and enhance the integrity of the composite section column.

[0030] Another advantage of the present invention is that the self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column of the present invention can promote the engineering application scope of inorganic adhesive composite bamboo, promote the development of inorganic adhesive composite bamboo structure, help reduce energy consumption and carbon emissions in the construction industry, and promote the sustainable development of civil engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a cross-sectional schematic diagram of a self-resetting inorganic adhesive composite bamboo and cross-shaped steel combined cross-section column disclosed in an embodiment of the present invention;

[0032] Figure 2 It is a schematic cross-sectional exploded view of a self-resetting inorganic adhesive composite bamboo and cross-shaped steel combined cross-section column disclosed in an embodiment of the present invention;

[0033] Figure 3 It is a schematic structural diagram of a self-resetting inorganic adhesive composite bamboo and cross-shaped steel combined cross-section column disclosed in an embodiment of the present invention;

[0034] Figure 4 It is an exploded schematic diagram of a self-resetting inorganic adhesive composite bamboo and cross-shaped steel combined cross-section column disclosed in an embodiment of the present invention;

[0035] Explanation of the accompanying drawings: 1. Inorganic glue composite bamboo; 2. Cross-shaped steel; 3. Anchor bolt; 4. Steel glue; 5. Steel strand; 6. Anchor; 7. Steel pad; 11. Composite bamboo round hole; 12. Composite bamboo inner groove. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention. The selection of each structural size and material listed in the present invention can be selected according to actual needs, and will not be listed one by one here.

[0037] The present invention aims to solve the problems of limited cross-sectional size and bearing capacity of new inorganic adhesive composite bamboo materials in existing engineering technology, which are difficult to be applied to structural components requiring large cross-sectional size, limited earthquake resistance and no post-earthquake self-reset performance, and promote the engineering application of new inorganic adhesive composite bamboo materials. A self-reset inorganic adhesive composite bamboo-steel composite cross-sectional earthquake-resistant column and a manufacturing method thereof are provided; wherein the self-reset inorganic adhesive composite bamboo-steel composite cross-sectional earthquake-resistant column comprises inorganic adhesive composite bamboo, steel, anchor bolts, steel adhesive, steel strands, and anchors; the inorganic adhesive composite bamboo The bamboo is cut symmetrically along the centroid of the column section, and a composite bamboo inner groove and a composite bamboo circular hole are arranged on the side of the inorganic adhesive composite bamboo along the length direction of the inorganic adhesive composite bamboo; the anchor bolts are uniformly welded on the web of the steel section at set intervals; the web is inserted in the composite bamboo inner groove, and the anchor bolts are inserted in the composite bamboo circular hole. The contact surface between the steel section and the inorganic adhesive composite bamboo and the contact surface between the anchor bolt and the inorganic adhesive composite bamboo are both adhered by steel glue, and the steel strand passes through the steel pipe in the middle of the steel section, and is anchored by the anchor at the end after prestress is applied.

[0038] Example

[0039] The present embodiment provides a self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column, comprising an inorganic adhesive composite bamboo 1, a cross-shaped steel 2, an anchor bolt 3, a steel adhesive 4, a steel strand 5, and an anchor 6; the inorganic adhesive composite bamboo 1 is cut symmetrically along the centroid of the column cross section, and holes and grooves are drilled and grooved on two opposite sides of the inorganic adhesive composite bamboo 1 along the longitudinal direction according to the size of the steel; for details, see Figure 2 The inorganic adhesive composite bamboo 1 is excavated according to the size of the cross steel 2 to obtain a composite bamboo inner groove 12, and the composite bamboo circular hole 11 is drilled according to the spacing and size of the anchor bolts 3; the anchor bolts 3 are evenly welded to one pair of webs of the cross steel 2 at a certain interval;

[0040] The cross-shaped steel 2 is cross-shaped, and a through hole is set at its center along its axial direction. Anchor bolts 3 are welded on a pair of oppositely arranged webs, and the anchor bolts 3 are inserted in the composite bamboo circular holes 11, and the other pair of webs are inserted in the composite bamboo inner grooves. Specifically, the webs without anchor bolts 3 in the cross-shaped steel 2 are inserted in the composite bamboo inner grooves 12 of two inorganic adhesive composite bamboos 1, and the other pair of webs with anchor bolts 3 are adhered between the two inorganic adhesive composite bamboos 1. At the same time, the anchor bolts 3 are also inserted in the composite bamboo circular holes 11, and between the anchor bolts 3 and the composite bamboo circular holes 11, the two groups of webs of the cross-shaped steel 2 and the inorganic adhesive composite bamboo 1 are bonded with steel glue 4; the steel strand 5 passes through the steel pipe in the middle of the steel, and is anchored on the steel pad 7 through the anchor 6 after prestressing. The present invention adopts inorganic adhesive composite bamboo 1, which is fire-resistant, durable and environmentally friendly. Only two pieces of inorganic adhesive composite bamboo 1 are directly spliced ​​together to tightly surround the steel section in the combined section, which has better integrity, simpler and more efficient construction, can effectively prevent the steel section from buckling, and greatly improve the overall bearing capacity.

[0041] Preferably, the inorganic glue composite bamboo 1 part of the composite column should be grooved according to the cross-sectional size of the steel section, and a corresponding glue layer thickness should be reserved.

[0042] Preferably, the inorganic adhesive composite bamboo 1 adopts a new inorganic adhesive composite bamboo 1 material based on modified magnesium oxysulfide inorganic adhesive bonding, and the strength grade is not limited; for details, please refer to the inorganic adhesive for bamboo and wood structure disclosed in patent CN111423820A, or the inorganic adhesive for anti-cracking bamboo structure disclosed in CN111393130A, etc.

[0043] Preferably, the steel section is made of steel with a strength of Q235 or above, and the cross-sectional shape of the steel section is not limited to a cross-sectional shape, and may be an H-shaped or straight-shaped cross-sectional steel section, etc.

[0044] Preferably, the thickness of the steel section is greater than or equal to 6 mm, and the thickness of the steel section is actually determined comprehensively based on the size and bearing capacity requirements of the composite section column.

[0045] Preferably, the anchor bolt 3 is made of steel with a strength of Q235 or above. The anchor bolt 3 is not limited to a smooth circular cross-section steel rod, and can be a circular cross-section screw with threads.

[0046] Preferably, the diameter range of the anchor bolt 3 is 8mm~16mm, and the diameter of the anchor bolt 3 should be determined according to the cross-sectional size of the combined cross-sectional column; the length of the anchor bolt 3 should be determined according to the actual size of the combined cross-sectional column, and the end of the anchor bolt 3 is greater than 40mm away from the surface of the composite bamboo; the spacing between the anchor bolts 3 is 200mm~500mm, and the spacing between the anchor bolts 3 is determined according to different column lengths.

[0047] Preferably, the steel-bonding glue 4 is made of organic steel-bonding glue 4, and the thickness of the glue layer is not less than 2.0 mm, and the recommended thickness of the glue layer is between 2.0 mm and 3.0 mm.

[0048] Preferably, the cross-sectional shape of the combined cross-sectional column is not limited to a rectangle, and may be a circular or polygonal cross-sectional shape.

[0049] Preferably, the diameter of the steel strand 5 is determined according to the size of the combined cross-section column, and the diameter of the steel strand 5 is not less than 10 mm.

[0050] Preferably, the inorganic glue composite bamboo 1 part of the composite column should be grooved according to the cross-sectional size of the steel section, and a corresponding glue layer thickness should be reserved.

[0051] In the embodiment of the present invention, the above-mentioned steel type adopts cross-shaped steel 2, and the anchor bolt 3 adopts smooth round screw.

[0052] A method for manufacturing a self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to an embodiment of the present invention comprises the following steps:

[0053] Step S1: prefabricate the cross-shaped steel 2 and anchor bolts 3, and weld the anchor bolts 3 at a certain distance on both sides of the steel web to ensure that the anchor bolts 3 are perpendicular to the steel web; the cross-shaped steel 2 can be welded on the outer wall of the hollow steel pipe with four rectangular steel plates, or formed together by other processes.

[0054] Step S2: prefabricate and process the novel inorganic adhesive composite bamboo 1, cut and obtain composite bamboo materials of the required size for the combined cross-section column, and groove and drill holes in the composite bamboo according to the size of the steel section and the anchor bolt 3 respectively.

[0055] Step S3: evenly apply the steel adhesive 4 on the surfaces of the welded steel sections and anchor bolts 3, and apply the steel adhesive 4 on the joint surfaces of the cut and grooved inorganic adhesive composite bamboo 1.

[0056] Step S4: Align the inorganic glue composite bamboo circular hole 11 and the composite bamboo inner groove 12, assemble the steel with anchor bolts 3 into the circular hole and inner groove of the general composite bamboo, and then splice the other half of the inorganic glue composite bamboo 1.

[0057] Step S5: Compress the assembled composite section column by equipment, and wait for the initial setting of the steel adhesive 4 for curing, so as to obtain a novel self-resetting inorganic adhesive composite bamboo-steel composite section earthquake-resistant column;

[0058] Step S6: After the maintenance is completed, the steel strand 5 is passed through the middle steel pipe of the composite column, and after applying a certain prestress, the prestressed steel strand 5 is anchored on the steel pad 7 through the anchor 6 to obtain a self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column.

[0059] In the above embodiment, the inorganic adhesive composite bamboo 1 material is combined with the steel section, and the advantages of the mechanical properties of the combined cross-section components can be used to make up for the performance defects of the inorganic adhesive composite bamboo 1 and the steel section, and the performance advantages of the two materials can be fully utilized to work together to form complementary advantages. The steel section, as an intermediate medium, can not only effectively splice the inorganic adhesive composite bamboo 1 together to increase the cross-sectional area of ​​the inorganic adhesive composite bamboo 1, but also improve the bearing capacity of the inorganic adhesive composite bamboo. The inorganic adhesive composite bamboo 1 material used has excellent fire resistance, which can not only provide fire protection for the steel section inside the self-resetting inorganic adhesive composite bamboo-steel combined cross-section seismic column, but also provide annular constraints for the internal steel section to prevent the steel section from buckling and failure under the action of vertical load, and ensure that the bearing capacity of the steel section is fully utilized. The anchor bolts 3 welded on the steel section can enhance the integrity of the self-resetting inorganic adhesive composite bamboo-steel combined cross-section seismic column, effectively prevent the relative slip between the steel section and the composite bamboo, and enhance the ability of the steel section and the inorganic adhesive composite bamboo 1 to work together.

[0060] Another advantage of the present invention is that the prestressed steel strands 5 are applied to the composite cross-section column through the steel pipe in the middle of the steel section, which can significantly improve the seismic performance and post-earthquake repairability of the inorganic adhesive composite bamboo-steel composite column.

[0061] Another advantage of the present invention is that the prestressed steel strands 5 are applied to the composite cross-section column through the steel pipe in the middle of the steel section, which can significantly improve the seismic performance and post-earthquake repairability of the inorganic adhesive composite bamboo-steel composite column.

[0062] Another advantage of the present invention is that the steel section and the inorganic adhesive composite bamboo 1 are completely butt-jointed and assembled, and are directly and tightly combined together by the steel adhesive 4 without any additional connection process, which can reduce the construction process and improve the prefabrication construction efficiency of the composite section column.

[0063] Another advantage of the present invention is that the anchor bolts 3 welded on the steel section can strengthen the tie between the steel section and the inorganic adhesive composite bamboo 1, reduce the slip between the steel section and the inorganic adhesive composite bamboo 1, and enhance the integrity of the composite section column.

[0064] Another advantage of the present invention is that the self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column of the present invention can promote the engineering application scope of the new inorganic adhesive composite bamboo 1, promote the development of the inorganic adhesive composite bamboo 1 structure, and is conducive to reducing energy consumption and carbon emissions in the construction industry and promoting the sustainable development of civil engineering.

[0065] Finally, the method of the present invention is only a preferred embodiment and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Self-resetting inorganic adhesive composite bamboo-steel composite section earthquake-resistant column, characterized in that: The inorganic adhesive composite bamboo comprises inorganic adhesive composite bamboo, steel, anchor bolts, steel adhesive, steel strands and anchors; the inorganic adhesive composite bamboo is cut symmetrically along the centroid of the column section, and composite bamboo inner grooves and composite bamboo circular holes are arranged on the opposite sides of the two inorganic adhesive composite bamboos after cutting along the length direction of the inorganic adhesive composite bamboo; The steel section is cross-shaped, and a through hole is arranged at its center along its axial direction. Anchor bolts are welded on a pair of oppositely arranged webs, and the anchor bolts are inserted in the circular holes of the composite bamboo. The other pair of webs are inserted in the inner grooves of the composite bamboo. The contact surfaces between the steel section and the inorganic adhesive composite bamboo and the contact surfaces between the anchor bolts and the inorganic adhesive composite bamboo are all glued by steel glue; the steel strand passes through the through hole in the middle of the steel section, and is anchored by anchors after pre-tensioning is applied at both ends of the steel strand.

2. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The steel sections are made of steel with a strength of Q235 or above.

3. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The thickness of the adhesive layer of the steel adhesive is between 2.0 mm and 3.0 mm.

4. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The thickness of the steel section is greater than or equal to 6 mm.

5. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The anchor bolts are made of steel with a strength of Q235 or above.

6. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The anchor bolt is a steel rod with a smooth circular cross section or a threaded circular cross section screw.

7. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The diameter of the anchor bolts ranges from 8 mm to 16 mm; the spacing between the anchor bolts ranges from 200 mm to 500 mm; and the distance between the ends of the anchor bolts and the surface of the composite bamboo is greater than 40 mm.

8. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The steel bonding glue adopts organic steel bonding glue.

9. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The cross-sectional shape of the inorganic adhesive composite bamboo is rectangular or circular.

10. The self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to claim 1, characterized in that: The cross-sectional shape of the inorganic adhesive composite bamboo is a polygonal cross-sectional shape.

11. The method for manufacturing the self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column according to any one of claims 1 to 10, characterized in that: as follows: Step S1: prefabricate and process the steel and anchor bolts, and weld the anchor bolts at a set distance on both sides of the steel web to ensure that the anchor bolts are perpendicular to the steel web; Step S2: prefabricate and process inorganic glue composite bamboo raw materials, cut and obtain composite bamboo materials of the required size for the combined cross-section column, and groove and drill holes in the composite bamboo according to the size of the steel section and the anchor bolts; Step S3: evenly apply the steel adhesive to the welded steel section and anchor bolt surfaces, and apply the steel adhesive to the splicing surface of the cut and grooved inorganic adhesive composite bamboo; Step S4: installing the steel with anchor bolts in the pre-grooved half of the inorganic adhesive composite bamboo, and then splicing the other half of the inorganic adhesive composite bamboo; Step S5: Compress the assembled composite section column and wait for the initial setting of the steel adhesive for curing; Step S6: After the curing is completed, the steel strands are passed through the through holes of the steel sections, and after the set prestress is applied, the prestressed steel strands are anchored by anchors to obtain a self-resetting inorganic adhesive composite bamboo-steel composite cross-section earthquake-resistant column.

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