Equipment and method for reinforcing section steel column with I-shaped section by externally sleeving concrete-filled steel tube

Abstract

The invention relates to the technical field of civil construction engineering, in particular to equipment and a method for reinforcing an I-shaped section steel column by sleeving concrete-filled steel tubes outside a section steel column body, the equipment comprises a reinforcing cylinder arranged outside the section steel column body in a sleeving manner, and reinforcing concrete is filled between the reinforcing cylinder and the section steel column body; the reinforcing cylinder comprises a reinforcing sleeve coaxially arranged outside the section steel column body in a sleeving mode, end plates are arranged at the two ends of the reinforcing sleeve correspondingly, and a plurality of first connecting assemblies and a plurality of second connecting assemblies are arranged between the two end plates. A plurality of reinforcing rods are fixedly connected to the inner wall of the reinforcing sleeve, the ends, away from the reinforcing sleeve, of the reinforcing rods are fixedly connected with the section steel column body, and the reinforcing rods are wrapped with the reinforcing concrete. The advantages of an outer sleeve steel pipe concrete reinforcing method are applied to the I-shaped steel column, the key problems that in the prior art, interface bonding is poor, integrality is weak, performance improvement is asynchronous, and joint treatment is difficult are effectively solved, and collaborative improvement of bearing, rigidity and ductility is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil engineering, and in particular to a device and method for reinforcing a steel pipe concrete jacketed H-shaped section steel column. BACKGROUND

[0002] In building structure engineering, reinforced concrete steel columns as the main load-bearing component, its performance directly affects the safety of the structure. However, in the process of use, the steel is damaged due to improper design and use, environmental erosion, or changes in function and improvement of specification requirements, etc., which does not meet the use requirements, and the steel column needs to be reinforced.

[0003] The existing steel column reinforcement mainly adopts the methods of increasing section reinforcement, bonding steel plate reinforcement, and wrapping reinforced concrete reinforcement. However, the method of increasing section has poor bonding between new and old concrete, and insufficient integrity; the wrapping steel method is limited by poor integrity, low material utilization rate, etc., and it is difficult to simultaneously improve the bearing capacity, stiffness and ductility, and lacks targeted solutions in terms of column foot node processing and interface coordination. The existing steel pipe concrete jacketing technology has been applied to the reinforcement of reinforced concrete steel columns, but the steel column has essential differences due to the poor bonding between steel and concrete interface and the non-closed cross-sectional characteristics, which leads to the inability to directly transplant the existing technology.

[0004] Therefore, it is urgent to develop a steel pipe concrete jacketed H-shaped section steel column reinforcement device and method to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a steel pipe concrete jacketed H-shaped section steel column reinforcement device and method to solve the problems existing in the prior art.

[0006] To achieve the above purpose, the present application provides the following scheme: the present application provides a steel pipe concrete jacketed H-shaped section steel column reinforcement device, which comprises a reinforcing cylinder sleeved outside the steel column body, and the reinforcing cylinder and the steel column body are filled with reinforcing concrete; The reinforcing cylinder comprises a reinforcing sleeve coaxially sleeved outside the steel column body, and the two ends of the reinforcing sleeve are respectively provided with end plates, and a plurality of first connecting components and a plurality of second connecting components are arranged between the two end plates; The inner wall of the reinforcing sleeve is fixedly connected with a plurality of reinforcing rods, one end of the reinforcing rod away from the reinforcing sleeve is fixedly connected with the steel column body, and the reinforcing concrete is wrapped outside the reinforcing rod; The reinforcing rod comprises a main rod fixedly connected between the reinforcing sleeve and the steel column body, the outer wall of the main rod is provided with a plurality of branch rods, and the main rod and the branch rods are in contact with the reinforcing concrete.

[0007] Preferably, the reinforcing sleeve includes two symmetrically arranged half-sleeves, which are detachably connected, and the main rod is fixed to the inner wall of the half-sleeve; an arc-shaped first connecting plate is fixed to both ends of the half-sleeve, and the end plate is detachably connected to the first connecting plate.

[0008] Preferably, the end plate includes symmetrically arranged cover plates, the two cover plates are arranged in a semi-circle and are arranged corresponding to the first connecting plate, the first connecting component is locked to the two corresponding cover plates, and the second connecting component is locked to the four cover plates.

[0009] Preferably, the straight edge of the cover plate is provided with a plurality of second connecting holes, the corresponding second connecting holes between the two cover plates at the same end are spliced ​​together, a reinforcing sleeve is clamped and fixed between the two spliced ​​second connecting holes, and the second connecting component is locked and connected between the two corresponding reinforcing sleeves.

[0010] Preferably, the cover plate has a plurality of locking holes on its straight edge. The locking holes on the two oppositely arranged cover plates are arranged opposite each other, and a locking rod is provided between the two oppositely arranged locking holes. When the two cover plates are joined together, the locking rod is locked and engaged with the locking hole.

[0011] Preferably, the locking rod includes a rod body adapted to the locking hole, and a movable block is slidably extended at the end of the rod body. The side wall of the movable block is provided with a plurality of axially equally spaced locking rods. The locking rods are convexly connected to the rod body. When the two cover plates are joined together, the locking rods extend out of the movable block and engage in the locking holes on the side wall of the locking hole.

[0012] Preferably, the inner cavity of the main rod is provided with an injection chamber, the side wall of the injection chamber is provided with a plurality of injection holes, an injection block is slidably connected in the injection hole, the inner cavity of the injection block is provided with an injection channel, and a one-way plug is provided in the injection channel.

[0013] Preferably, the sidewall of the injection hole is provided with a plurality of guide grooves arranged along the sliding direction of the injection block, and a guide block is elastically slidable in the guide groove, the guide block extending out of the guide groove and fixedly connected to the outer wall of the injection block.

[0014] Preferably, the outer wall of the half-set is fixedly connected with a plurality of reinforcing plates, and the two ends of the reinforcing plates are respectively fixedly connected to the upper and lower first connecting plates.

[0015] This invention also discloses a method for constructing an I-shaped steel column reinforced with a steel-tube concrete jacket, comprising the following steps: Design a reinforcement plan according to the reinforcement requirements, and then prepare the components according to the reinforcement plan; The locations on the steel column body to be reinforced are treated; The reinforcing sleeve is fitted onto the corresponding position on the steel column body and supported, and then the main rod is fixed to the steel column body. End plates are installed at the upper and lower ends of the reinforcing sleeve, and the first connecting component and the second connecting component are installed for reinforcement. Reinforcing concrete is poured into the reinforcing cavity formed by the reinforcing sleeve and end plate, and the reinforcing concrete is cured until it reaches the design strength.

[0016] Compared with existing technologies, this invention has the following advantages and technical effects: This invention discloses a device for reinforcing I-shaped steel columns with an outer steel tube and concrete casing. The overall device adopts an outer casing structure design, eliminating the need for extensive cutting or welding modifications to the steel column body, making construction convenient and allowing for rapid improvement of the structural performance of the steel column without significantly affecting its original function. The main body of the device consists of a reinforcing cylinder fitted outside the I-shaped steel column body, and reinforcing concrete filling the space between the reinforcing cylinder and the steel column body, forming a composite load-bearing body of "reinforcing cylinder-reinforcing concrete-original column". This provides comprehensive external constraint for the I-shaped steel column, enhancing its compressive and deformation resistance and preventing local instability under stress. The reinforcing sleeve comprises a reinforcing sleeve coaxially fitted around the steel column body, with an end plate at each end. The two end plates are connected by several first connecting components and several second connecting components to form a stable cylindrical support structure. This structure can fix the cylindrical structure of the reinforcing sleeve, preventing deformation during concrete pouring or stress application, and ensuring a stable and reliable restraint effect on the concrete. Several reinforcing rods are fixed to the inner wall of the reinforcing sleeve, with the other end of each rod fixed to the steel column body. The reinforcing concrete wraps around all the reinforcing rods, and the outer steel pipe is directly welded to the original steel column via the reinforcing rods. This achieves reliable force transfer between the old and new steel structures, overcoming the shortcomings of traditional methods such as enlarging the cross-section or using external steel cladding, which result in poor bonding between the old and new concrete and insufficient overall integrity. The reinforcing rod is a composite structure, consisting of a main rod fixed between the reinforcing sleeve and the steel column body, and several branch rods set on the outer wall of the main rod. The surfaces of both the main rod and the branch rods are in contact with the reinforcing concrete, which greatly increases the contact surface area and mechanical interlocking force with the concrete. The branched reinforcing rods are deeply embedded in the concrete, forming an "anchor bar" effect, like "studs" or "tree roots," which enhances the adhesion and mechanical interlocking between the concrete and the reinforcement system. This ensures that the concrete, the reinforcing sleeve, and the original column work together to bear the force, improving the overall integrity and effectively preventing peeling or slippage between the reinforcing concrete and the reinforcing sleeve and the steel column body, thus ensuring the effective transmission of force.

[0017] This invention applies the advantages of the steel-concrete composite reinforcement method to I-shaped steel columns, effectively solving key problems in the prior art such as poor interface bonding, weak integrity, asynchronous performance improvement, and difficulty in joint treatment, and achieving a synergistic improvement in load-bearing capacity, stiffness, and ductility. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is an axial view of the device for reinforcing I-shaped steel columns with steel tube concrete according to the present invention; Figure 2 This is a structural schematic diagram of the device for reinforcing I-shaped steel columns with steel-concrete composite jacket according to the present invention; Figure 3 For the present invention Figure 2 A magnified view of part A in the image; Figure 4 This is a schematic diagram of the reinforcing sleeve structure of the present invention; Figure 5 For the present invention Figure 4 A magnified view of part B in the image; Figure 6 This is a schematic diagram of the locking rod of the present invention; Figure 7 For the present invention Figure 6 A magnified view of part C; Figure 8 This is a schematic diagram of the main rod structure in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the injection block structure in Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the reinforcing plate in Embodiment 3 of the present invention; In the diagram: 1. Steel column body; 2. Reinforcing cylinder; 3. Reinforcing concrete; 21. Reinforcing sleeve; 22. End plate; 23. First connecting assembly; 24. Second connecting assembly; 25. Reinforcing rod; 26. Main rod; 27. Branch rod; 28. Half sleeve; 29. ​​First connecting plate; 210. Second connecting plate; 211. Connecting bolt kit; 212. Cover plate; 213. First connecting hole; 214. First connecting rod; 215. First nut kit; 217. Second connecting hole; 218. Reinforcing sleeve; 219. Second connecting rod; 220. Second nut assembly; 221. Tensioning hole; 222. Tensioning wedge; 223. Locking hole; 224. Locking rod; 225. Rod body; 226. Movable block; 227. Snap-fit ​​rod; 228. Snap-fit ​​hole; 229. Contact block; 230. Extension block; 231. Return spring; 232. Contact hole; 233. Injection chamber; 234. Injection hole; 235. Injection block; 236. Injection channel; 237. One-way plug; 238. Guide groove; 239. Guide block; 240. Guide spring; 241. Reinforcing plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 Reference Figures 1 to 7 As shown, this embodiment provides a device for reinforcing an I-shaped steel column with a steel tube concrete jacket, including a reinforcing cylinder 2 sleeved outside the steel column body 1, and reinforcing concrete 3 filling the space between the reinforcing cylinder 2 and the steel column body 1. The reinforcing sleeve 2 includes a reinforcing sleeve 21 coaxially sleeved outside the steel column body 1. End plates 22 are respectively provided at both ends of the reinforcing sleeve 21, and a number of first connecting components 23 and a number of second connecting components 24 are provided between the two end plates 22. Several reinforcing rods 25 are fixedly connected to the inner wall of the reinforcing sleeve 21. The end of the reinforcing rod 25 away from the reinforcing sleeve 21 is fixedly connected to the steel column body 1. The reinforcing concrete 3 is wrapped around the reinforcing rod 25. The reinforcing rod 25 includes a main rod 26 fixed between the reinforcing sleeve 21 and the steel column body 1. The outer wall of the main rod 26 is provided with several branch rods 27. The main rod 26 and the branch rods 27 are in contact with the reinforcing concrete 3.

[0022] This invention discloses a device for reinforcing I-shaped steel columns with an outer steel tube and concrete casing. The device adopts an outer casing structure design, eliminating the need for extensive cutting or welding modifications to the steel column body 1, making construction convenient and allowing for rapid improvement of the structural performance of the steel column without significantly affecting its original function. The main body of the device consists of a reinforcing cylinder 2 fitted outside the I-shaped steel column body 1 and reinforcing concrete 3 filling the space between the reinforcing cylinder 2 and the steel column body 1, forming a composite load-bearing body of "reinforcing cylinder 2-reinforcing concrete 3-original column". This provides comprehensive external constraint for the I-shaped steel column, enhancing its compressive and deformation resistance and preventing local instability under stress. The reinforcing sleeve 2 includes a reinforcing sleeve 21 coaxially sleeved outside the steel column body 1. Each end of the reinforcing sleeve 21 has an end plate 22. The two end plates 22 are connected by several first connecting components 23 and several second connecting components 24 to form a stable cylindrical support structure. This structure can fix the cylindrical structure of the reinforcing sleeve 21, preventing deformation during concrete pouring or stress application, and ensuring a stable and reliable constraint effect of the reinforcing sleeve 2 on the concrete. Several reinforcing rods 25 are fixedly connected to the inner wall of the reinforcing sleeve 21. The other end of each reinforcing rod 25 is fixedly connected to the steel column body 1. Reinforcing concrete 3 is wrapped around all the reinforcing rods 25. The outer steel pipe is directly welded to the original steel column through the reinforcing rods 25, achieving reliable force transfer between the old and new steel structures. This overcomes the shortcomings of traditional methods such as enlarging the cross-section or using external steel cladding, which result in poor bonding between the old and new concrete and insufficient overall integrity. The reinforcing rod 25 is a composite structure, consisting of a main rod 26 fixed between the reinforcing sleeve 21 and the steel column body 1, and several branch rods 27 set on the outer wall of the main rod 26. The surfaces of the main rod 26 and the branch rods 27 are in contact with the reinforced concrete 3, greatly increasing the contact surface area and mechanical interlocking force with the concrete. The branched reinforcing rods 25 are deeply embedded in the concrete, forming an "anchor bar" effect, like a "stud" or "root," enhancing the adhesion and mechanical interlocking between the concrete and the reinforcement system. This ensures that the concrete, the reinforcing sleeve 2, and the original column share the load, improving the overall integrity and effectively preventing peeling or slippage between the reinforced concrete 3 and the reinforcing sleeve 21 and the steel column body 1, ensuring effective force transmission. This invention applies the advantages of the steel-tube concrete reinforcement method to I-shaped steel columns, effectively solving key problems in the prior art such as poor interface bonding, weak overall integrity, asynchronous performance improvement, and difficult node processing, achieving a synergistic improvement in load-bearing capacity, stiffness, and ductility.

[0023] In one embodiment of the present invention, the reinforced concrete 3 can be selected according to requirements, such as selecting an appropriate grade or adding a fiber skeleton to increase strength.

[0024] In one embodiment of the present invention, a pad is welded and fixed on the steel column body 1, and the end of the main rod 26 away from the reinforcing sleeve 21 is enlarged and welded to the pad to increase the connection strength between the main rod 26 and the steel column body 1.

[0025] Further optimizing the design, the reinforcing sleeve 21 includes two symmetrically arranged semi-sleeves 28, which are detachably connected. The main rod 26 is fixed to the inner wall of the semi-sleeve 28. Arc-shaped first connecting plates 29 are fixed to both ends of the semi-sleeve 28, and end plates 22 are detachably connected to the first connecting plates 29. The reinforcing sleeve 21, composed of two semi-cylindrical semi-sleeves 28, facilitates transportation and installation, adapts to steel columns of different sizes, and improves construction flexibility. Arc-shaped first connecting plates 29 are installed at the top and bottom of the semi-sleeves 28, respectively. The semi-sleeves 28 can be connected to the cover plate 212 via connecting bolt kit 211 for easy assembly.

[0026] In one embodiment of the present invention, the two vertical sides of the half-set 28 are provided with second connecting plates 210, and the two half-sets 28 can be locked together by connecting bolt kit 211.

[0027] Further optimizing the design, the end plate 22 includes symmetrically arranged cover plates 212. The two cover plates 212 are semi-circular and correspond to the first connecting plate 29. The first connecting component 23 is locked to the two corresponding cover plates 212, and the second connecting component 24 is locked to the four cover plates 212. The end plate 22 is composed of two semi-circular cover plates 212, which can be connected to the half-sleeve 28 by connecting bolt kit 211 to form a closed space, facilitating the subsequent pouring of reinforcing concrete 3. The first connecting component 23 and the second connecting component 24 pass through the reinforcing sleeve 21 and are pulled between the upper and lower cover plates 212 for reinforcement connection.

[0028] In one embodiment of the present invention, the straight edge of the cover plate 212 is provided with a slot corresponding to the steel column body 1, which facilitates clamping the steel column body 1 during installation.

[0029] In one embodiment of the present invention, the splicing seams of the two cover plates 212 are staggered with the splicing seams of the two first connecting plates 29 to increase the overall integrity.

[0030] In one embodiment of the present invention, a first connecting hole 213 is provided on the cover plate 212, and the first connecting rod 214 of the first connecting component 23 passes through the two first connecting holes 213 and is locked by the first nut kit 215 to tighten the corresponding two cover plates 212.

[0031] To further optimize the design, several second connecting holes 217 are provided on the straight edge of the cover plate 212. The corresponding second connecting holes 217 between the two cover plates 212 at the same end are joined together, and a reinforcing sleeve 218 is clamped and fixed between the two joined second connecting holes 217. The second connecting component 24 is locked between the two corresponding upper and lower reinforcing sleeves 218. The second connecting holes 217 are opened on the straight edge of the cover plate 212 and are semi-circular. The two second connecting holes 217 are joined together to form a circular whole, which facilitates connection. When the two cover plates 212 are joined together, the corresponding two second connecting holes 217 lock the reinforcing sleeves 218. When connecting, the second connecting rod 219 of the second connecting component 24 passes through the two corresponding upper and lower reinforcing sleeves 218 and is locked by the second nut kit 220 to achieve fixation and increase the overall integrity of the equipment.

[0032] In one embodiment of the present invention, the cover plate 212 is provided with a tensioning hole 221 corresponding to the second connecting hole 217, and the reinforcing sleeve 218 is provided with a tensioning wedge 222 corresponding to the tensioning hole 221. The tensioning wedge 222 is provided with a wedge-shaped surface. The deeper it is inserted into the tensioning hole 221, the higher the tension. When the reinforcing sleeve 218 is installed in the second connecting hole 217, the tensioning wedge 222 is inserted into the tensioning hole 221, and the second connecting rod 219 is locked, the tensioning wedge 222 is gradually pressed into the tensioning hole 221 and gradually inserted, thereby tightening and fixing the two cover plates 212.

[0033] The design is further optimized by providing several locking holes 223 along the straight edges of the cover plate 212. The locking holes 223 on two oppositely positioned cover plates 212 are aligned, and a locking rod 224 is positioned between the two opposite locking holes 223. When the two cover plates 212 are joined, the locking rod 224 engages with the locking holes 223. The locking holes 223 are located on the straight edges, and the locking holes 223 on the two cover plates 212 are aligned accordingly. The two ends of the locking rod 224 are inserted into the two locking holes 223 respectively, achieving the positioning of the cover plates 212 during assembly. This enables rapid positioning and fastening of the two cover plates 212 on the same end, improving assembly efficiency and preventing misalignment during locking. Simultaneously, as the two cover plates 212 are gradually joined and pressed together, the two ends of the locking rod 224 engage with the locking holes 223 respectively, increasing the assembly strength of the cover plates 212.

[0034] In one embodiment of the present invention, in order to prevent the locking rod 224 from rolling in the locking hole 223, the locking hole 223 and the corresponding locking rod 224 are configured as prisms.

[0035] In a further optimized design, the locking rod 224 includes a rod body 225 that is adapted to the locking hole 223. The end of the rod body 225 has a movable block 226 that slides telescopically. The side wall of the movable block 226 is provided with a number of axially equally spaced snap-fit ​​rods 227. The snap-fit ​​rods 227 are connected to the rod body 225 in a transmission connection. When the two cover plates 212 are assembled, the snap-fit ​​rods 227 extend out of the movable block 226 and snap into the snap-fit ​​holes 228 on the side wall of the locking hole 223. The locking rod 224 includes a rod body 225 adapted to the locking hole 223. The end of the rod body 225 is telescopically connected to a movable block 226. The side wall of the movable block 226 is provided with several axially equally spaced locking rods 227, which are connected to the rod body 225 in a transmission manner. When the cover plate 212 is assembled, the locking rods 227 extend out of the movable block 226 and are locked into the locking holes 228 on the side wall of the locking hole 223. Through the locking structure of the telescopic locking rods 227, the locking rod 224 and the locking hole 223 are mechanically locked together. Compared with the traditional bolt connection, the connection is tighter and less prone to loosening. The transmission telescopic design can realize the automatic extension and retraction of the locking rods 227, improving the convenience of disassembly and assembly.

[0036] In one embodiment of the present invention, a contact hole 232 is provided in the movable block 226, and a contact block 229 corresponding to the contact hole 232 is fixedly connected to the end of the rod 225. The contact block 229 extends into the contact hole 232 and is elastically connected. The end of the contact block 229 is provided with a bevel and contacts the end of the locking rod 227 that extends into the contact hole 232. When the locking rod 224 is not subjected to external force, the distance between the rod 225 and the movable block 226 increases, the contact block 229 separates from the locking rod 227, and the locking rod 227 retracts into the movable block 226 without protruding, which facilitates assembly. When the two cover plates 212 are connected, the distance between the two cover plates 212 decreases, and pressure is applied to the movable blocks 226 at both ends, so that the distance between the movable block 226 and the rod 225 decreases. The contact block 229 pushes the locking rod 227 out of the movable block 226 and inserts it into the locking hole 228 to achieve locking and anchoring.

[0037] In one embodiment of the present invention, an extension block 230 is fixedly connected to one end of the latching rod 227 that extends into the contact hole 232. A return spring 231 in a compressed state is provided between the extension block 230 and the side wall of the contact hole 232. When the latching rod 227 is not subjected to external force, the return spring 231 pushes the latching rod 227 to retract toward the movable block 226. When the contact block 229 pushes the latching rod 227, the latching rod 227 moves outward toward the movable block 226, further compressing the return spring 231, which facilitates subsequent reset.

[0038] This invention also discloses a method for constructing an I-shaped steel column reinforced with a steel-tube concrete jacket, comprising the following steps: Design a reinforcement scheme according to the reinforcement requirements, and then prepare each component according to the reinforcement scheme; design a reinforcement scheme according to the reinforcement requirements, and clarify the size of the reinforcement sleeve 21, the arrangement density of the reinforcement rod 25, and the model parameters of the connecting components. Then prepare each component according to the reinforcement scheme, including the symmetrical half sleeve 28, the semi-circular cover plate 212, the reinforcement rod 25 that integrates the main rod 26 and the branch rod 27, the locking rod 224, the injection block 235, etc. The positions on the steel column body 1 to be reinforced are treated; the positions on the steel column body 1 to be reinforced are treated by removing rust, oil and impurities from the surface, grinding them smooth and marking the welding points of the reinforcing rods 25; at the same time, the surface of the steel column body 1 can be roughened to increase its bonding strength with the reinforced concrete 3. The reinforcing sleeve 21 is fitted onto the corresponding position on the steel column body 1 and supported. Then the main rod 26 is fixed to the steel column body 1. The two symmetrical half sleeves 28 are respectively attached to the corresponding reinforcement positions of the steel column body 1, spliced ​​into a complete reinforcing sleeve 21 and temporarily fixed. Then one end of the main rod 26 is welded to the preset point on the inner wall of the half sleeve 28, and the other end is welded to the marked point on the steel column body 1, ensuring that the branch rod 27 of the reinforcing rod 25 faces outward. End plates 22 are installed at the upper and lower ends of the reinforcing sleeve 21, and the first connecting component 23 and the second connecting component 24 are installed for reinforcement. Semi-circular cover plates 212 are installed at the upper and lower ends of the reinforcing sleeve 21, so that the cover plates 212 are aligned with the first connecting plate 29 at the end of the half sleeve 28. The locking rod 224 passes through the locking hole 223 of the cover plate 212 and triggers the snap-fit ​​rod 227 to snap and fix it, thus completing the splicing of the two cover plates 212 at the same end. Then, the first connecting component 23 is installed to lock the two corresponding cover plates 212. The second connecting hole 217 of the splicing is fitted with a reinforcing sleeve 218. The second connecting component 24 is used to lock the corresponding reinforcing sleeves 218, thus achieving the sealing and fastening of the reinforcing sleeve 2. At the same time, in order to increase stability, a temporary support structure can be set up for initial fixation. Pour reinforcing concrete 3 into the reinforcing cavity formed by the reinforcing sleeve 21 and the end plate 22, and cure the reinforcing concrete 3 until it reaches the design strength; pour reinforcing concrete 3 into the reinforcing cavity formed by the reinforcing sleeve 21 and the end plate 22 to fill the cavity; during the pouring process, effective vibration is required to avoid cavities or other defects in the reinforcing concrete 3; perform standard curing on the reinforcing concrete 3, and regularly monitor the temperature and humidity of the curing environment until the concrete reaches the design strength, remove the temporary support structure, and complete the reinforcement construction of the steel column.

[0039] Example 2 Reference Figures 8 to 9As shown, the difference between this embodiment and Embodiment 1 is only that the inner cavity of the main rod 26 is provided with an injection cavity 233, the side wall of the injection cavity 233 is provided with a plurality of injection holes 234, an injection block 235 is slidably connected in the injection hole 234, an injection channel 236 is provided in the inner cavity of the injection block 235, and a one-way plug 237 is provided in the injection channel 236. The main rod 26 is hollow to form a grouting cavity 233. A slidable grouting block 235 is provided in the grouting hole 234 on the side wall of the grouting cavity 233. Before pouring concrete, high-pressure air is introduced into the grouting cavity 233 and pressure is maintained to push the grouting block 235 out of the grouting hole 234, so that it can come into contact with the reinforced concrete 3, playing a similar role to the branch rod 27, and increasing the anchoring effect with the reinforced concrete 3. After the concrete solidifies, liquid grouting material is introduced into the grouting cavity 233. The grouting material is injected into the reinforced concrete 3 through the one-way opening grouting channel 236, filling the gaps in the concrete. After reacting, it forms a solid, further increasing the bonding strength between the reinforced concrete 3 and the reinforcing rod 25.

[0040] In one embodiment of the present invention, the one-way plug 237 requires a certain pressure to open and is in a closed state when not open.

[0041] In one embodiment of the present invention, the valve opening pressure of the one-way plug 237 is greater than the ejection pressure of the injection block 235, ensuring that the valve can only be opened after the injection block 235 is ejected.

[0042] To further optimize the design, the sidewall of the injection hole 234 is provided with several guide grooves 238 arranged along the sliding direction of the injection block 235. A guide block 239 elastically slides within the guide groove 238, extending out of the guide groove 238 and fixedly connected to the outer wall of the injection block 235. A guide spring 240 is provided between the guide block 239 and the guide groove 238 to ensure that the injection block 235 is locked in the injection hole 234 when not being injected, facilitating installation.

[0043] Example 3 Reference Figure 10 As shown, the difference between this embodiment and Embodiment 1 is only that a number of reinforcing plates 241 are fixed to the outer wall of the half-set 28, and the two ends of the reinforcing plates 241 are fixed to the upper and lower first connecting plates 29 respectively. The reinforcing plates 241 are arranged longitudinally at equal intervals between the corresponding upper and lower first connecting plates 29, and are fixed to the outer wall of the half-set 28, which serves to reinforce the half-set 28 and also increases the equipment's resistance to shear force.

[0044] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0045] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An apparatus for jacketing a concrete filled steel column of H- section steel shape, characterized by: The application relates to a type steel column, which comprises a reinforcing cylinder (2) sleeved outside a type steel column body (1), and reinforcing concrete (3) filled between the reinforcing cylinder (2) and the type steel column body (1). The reinforcing cylinder (2) comprises a reinforcing sleeve (21) coaxially sleeved outside the type steel column body (1), and end plates (22) are arranged at two ends of the reinforcing sleeve (21), a plurality of first connecting assemblies (23) and a plurality of second connecting assemblies (24) are arranged between the two end plates (22). A plurality of reinforcing rods (25) are fixedly connected to the inner wall of the reinforcing sleeve (21), one end of the reinforcing rod (25) away from the reinforcing sleeve (21) is fixedly connected to the type steel column body (1), and the reinforcing concrete (3) is wrapped outside the reinforcing rod (25). The reinforcing rod (25) comprises a main rod (26) fixedly connected between the reinforcing sleeve (21) and the type steel column body (1), and a plurality of branch rods (27) are arranged on the outer wall of the main rod (26), and the main rod (26) and the branch rod (27) are in contact with the reinforcing concrete (3).

2. The apparatus for jacketed concrete filled steel column of I-shaped section steel according to claim 1, characterized in that: The reinforcing sleeve (21) comprises two symmetrical half sleeves (28) which are detachably connected, and the main rod (26) is fixedly connected to the inner wall of the half sleeve (28); arc-shaped first connecting plates (29) are fixedly connected to two ends of the half sleeve (28), and the end plate (22) is detachably connected with the first connecting plate (29).

3. The apparatus for jacketed concrete filled steel column of I-shaped section steel according to claim 2, characterized in that: The end plate (22) comprises symmetrical cover plates (212) which are arranged in a semicircular shape and correspond to the first connecting plate (29), the first connecting assembly (23) is in locking connection with two cover plates (212) arranged above and below, and the second connecting assembly (24) is in locking connection with four cover plates (212).

4. The apparatus for jacketed concrete filled steel column of I-shaped section steel according to claim 3, characterized in that: Second connecting holes (217) are arranged on the straight edges of the cover plate (212), corresponding second connecting holes (217) between two cover plates (212) at the same end are spliced with each other, reinforcing sleeves (218) are clamped and fixed between two second connecting holes (217) which are spliced with each other, and the second connecting assembly (24) is in locking connection between two reinforcing sleeves (218) arranged above and below.

5. The apparatus for jacketed concrete filled steel column of I-shaped section steel according to claim 3, characterized in that: Locking holes (223) are arranged on the straight edges of the cover plate (212), the locking holes (223) on two cover plates (212) arranged oppositely are arranged oppositely, locking rods (224) are arranged between the locking holes (223) arranged oppositely, and the locking rod (224) is in locking clamping connection with the locking hole (223) when the two cover plates (212) are spliced.

6. The apparatus for jacketed concrete filled steel column of I-shaped section steel according to claim 5, characterized in that: The locking rod (224) comprises a rod body (225) matched with the locking hole (223), the end of the rod body (225) is telescopic sliding with a movable block (226), the side wall of the movable block (226) is telescopic provided with a plurality of axially equidistantly arranged clamping rods (227), the clamping rods (227) are in transmission connection with the rod body (225), when the two cover plates (212) are spliced, the clamping rods (227) are extended out of the movable block (226) and clamped in the clamping holes (228) in the side wall of the locking hole (223).

7. The apparatus for jacketing a steel tube concrete reinforced I-shaped section shaped steel column according to claim 1, characterized by: The inner cavity of the main rod (26) is provided with a perfusion cavity (233), the side wall of the perfusion cavity (233) is provided with a plurality of perfusion holes (234), the perfusion holes (234) are slidingly connected with perfusion blocks (235), the inner cavity of the perfusion block (235) is provided with a perfusion channel (236), and the perfusion channel (236) is provided with a one-way plug (237).

8. The apparatus for jacketed concrete filled steel column of I-shaped section steel according to claim 7, characterized in that: The side wall of the perfusion hole (234) is provided with a plurality of guide grooves (238) arranged along the sliding direction of the perfusion block (235), the guide grooves (238) are elastically sliding with guide blocks (239), the guide blocks (239) are extended out of the guide grooves (238) and fixedly connected with the outer wall of the perfusion block (235).

9. The apparatus for jacketing a steel tube concrete reinforced I-shaped section shaped steel column according to claim 2, characterized by: The outer wall of the half sleeve (28) is fixedly connected with a plurality of reinforcing plates (241), the two ends of the reinforcing plate (241) are respectively fixedly connected with the upper and lower first connecting plates (29).

10. A method of encasing a steel pipe concrete reinforced H-shaped section steel column, using the apparatus for encasing a steel pipe concrete reinforced H-shaped section steel column according to any one of claims 1 to 9, characterized by, The method comprises the following steps: According to the reinforcement requirements, a reinforcement scheme is designed, and then parts and components are prepared according to the reinforcement scheme; The position of the profile steel column body (1) to be reinforced is treated; The reinforcement sleeve (21) is sleeved on the corresponding position of the profile steel column body (1) and is supported, and then the main rod (26) is fixedly connected to the profile steel column body (1); The end plates (22) are installed at the upper and lower ends of the reinforcement sleeve (21), and the first connecting assembly (23) and the second connecting assembly (24) are installed for reinforcement; The reinforcement concrete (3) is poured into the reinforcement cavity formed by the reinforcement sleeve (21) and the end plate (22), and the reinforcement concrete (3) is cured until the designed strength is reached.

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