A prefabricated self-resetting energy-absorbing composite column structure

Abstract

The present invention provides a prefabricated self-resetting energy-absorbing composite column structure, which relates to the technical field of earthquake-resistant and seismic isolation devices. It includes: an upper column and a lower column. The bottom of the upper column is provided with two parallel connecting slide rails, a slide groove is provided between the connecting slide rails, and the end of the slide groove is provided with a mounting hole connected thereto. The top of the lower column is provided with a self-resetting buckle that can slide along the slide groove and fit into the mounting hole. The limit block fits the connecting slide rail for sliding installation, and the top and bottom ends of the limit block are detachably connected to the upper column and the lower column respectively through fasteners. The column is quickly and firmly installed by quickly splicing the connecting slide rail at the bottom of the upper column and the self-resetting buckle at the top of the lower column, which has the advantage of simple construction. All components are prefabricated in the factory and quickly assembled at the construction site. While ensuring the quality and safety of the connection, it reduces material waste and environmental pollution, and has good economy.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake-resistant and vibration-isolating devices, and in particular to a prefabricated self-resetting energy-absorbing composite column structure. Background Art

[0002] Cast-in-place concrete columns have long been widely used, but their construction presents significant challenges, including high on-site labor requirements, high risk of casualties, complex processes, difficulty in quality control, resource waste, and severe environmental pollution. Prefabricated columns are prefabricated in quality-controlled factories and transported to the construction site for rapid assembly. They offer advantages such as fast construction, simple procedures, and minimal environmental pollution, addressing these shortcomings of cast-in-place concrete columns.

[0003] Patent application publication number CN118273484A discloses a concrete assembly column and an assembly method thereof, comprising: a prefabricated column body and column reinforcement, a grouting overflow hole being provided inside the lower end of the prefabricated column body, concrete being poured into the reinforcement sleeve through the grouting overflow hole, and the grouting overflow hole being sealed after the pouring is completed, thereby completing the assembly of the concrete assembly column; however, this type of assembly column still has a cast-in-place construction portion, and the construction quality is highly dependent on the construction site environment and personnel, and to a certain extent, it is still difficult to guarantee the connection quality and construction convenience.

[0004] Patent application publication number CN114482405A discloses a UHPC-steel tube confined concrete assembly column and its construction method, comprising a spliced ​​column formed by vertically overlapping and splicing a number of hollow prefabricated UHPC-steel casing segments, and cast-in-situ concrete poured in the middle of the spliced ​​column. The upper and lower adjacent prefabricated UHPC-steel casing segments are connected together by a connecting assembly. However, under the action of an earthquake, this type of assembly column still dissipates energy through the plastic hinge of the column itself. When encountering a high-intensity earthquake, the plastic hinge is severely damaged and cannot be repaired, resulting in demolition and reconstruction, which results in high economic costs.

[0005] In view of the above reasons, the present invention proposes a prefabricated self-resetting energy-absorbing composite column structure, which can be quickly assembled and connected at the construction site without concrete grouting, and the connection quality is guaranteed. Summary of the Invention

[0006] The purpose of the present invention is to provide a prefabricated self-resetting energy-absorbing composite column structure, which can be quickly assembled and connected at the construction site without the need for concrete grouting, can be quickly put into use, and can ensure the connection quality while achieving rapid assembly, thereby greatly saving the economic and time costs of assembly.

[0007] The present invention provides a prefabricated self-resetting energy-absorbing composite column structure, comprising: an upper column and a lower column, wherein the bottom of the upper column is provided with two parallel connecting slide rails, a slide groove is provided between the connecting slide rails, the end of the slide groove is provided with a mounting hole connected thereto, the top of the lower column is provided with a self-resetting clip that can slide along the slide groove and be adapted to engage with the mounting hole, the self-resetting clip comprises a fixed sleeve and an upper sliding cap slidably mounted on the top of the self-resetting clip, the interior of the upper sliding cap is provided with a stud that extends into the interior of the fixed sleeve, the exterior of the stud is sheathed with a reset spring, the upper sliding cap comprises an inverted cone section and a spring connected to the bottom end thereof The cam is adapted to move the upper end of the slide block toward the lower portion of the slide block, and the cam is adapted to move the upper end of the slide block toward the lower portion of the slide block.

[0008] Preferably, an upper column bottom cap is provided at the bottom of the upper column, an upper column top cap is provided at the top of the upper column, and the connecting slide rail is provided at the bottom of the upper column bottom cap.

[0009] Preferably, a lower column top cap is provided on the top of the lower column, a lower column bottom cap is provided on the bottom of the lower column, and the self-resetting buckle is installed on the top of the lower column top cap.

[0010] Preferably, an inter-column damper is further provided between the bottom end of the upper column and the top end of the lower column, and the inter-column damper is any one of a viscous damper, a viscoelastic damper, a metal damper and a friction damper.

[0011] Preferably, the upper column body includes an upper column inner steel pipe and an upper column outer steel pipe arranged concentrically, and filling concrete is poured between the upper column inner steel pipe and the upper column outer steel pipe. The lower column body includes a lower column inner steel pipe and a lower column outer steel pipe arranged concentrically, and filling concrete is poured between the lower column inner steel pipe and the lower column outer steel pipe. The filling concrete is any one of steel fiber concrete, polyethylene fiber concrete, glass fiber concrete, polyethanol fiber concrete and high ductility and high strength concrete.

[0012] Preferably, prestressed tendons are further provided inside the upper column and the lower column, and the prestressed tendons pass through the steel pipe inside the upper column and the steel pipe inside the lower column in sequence. The two ends of the prestressed tendons are anchored to the top cap of the upper column and the bottom cap of the lower column respectively, and the prestressed tendons are any one of high-strength steel bars, high-strength steel cables, carbon fiber tendons, glass fiber tendons, aramid fiber tendons, stainless steel tendons, galvanized steel bars and high-strength steel wires.

[0013] Preferably, the upper column top cap, the upper column bottom cap, the lower column top cap and the lower column bottom cap are all made of high-strength metal materials, and the high-strength metal materials are any one of high-strength steel, titanium alloy, high-strength aluminum alloy and high-strength magnesium alloy. The upper column inner steel pipe, the upper column outer steel pipe, the lower column inner steel pipe and the lower column outer steel pipe are all made of any one of low-carbon steel, high-strength steel and stainless steel.

[0014] Preferably, an upper mounting screw hole is provided on the bottom side of the upper column, and a lower mounting screw hole is provided on the top side of the lower column. Both ends of the limit block are respectively adapted to be mounted with screws to the upper mounting screw hole and the lower mounting screw hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The column can be quickly and securely installed by quickly splicing the connecting rail at the bottom of the upper column and the self-resetting buckle at the top of the lower column. This has the advantage of simple construction. All components are prefabricated in the factory and quickly assembled on the construction site. While ensuring the quality and safety of the connection, it reduces material waste and environmental pollution, and has good economic efficiency.

[0017] 2. The upper column and the lower column are further connected and fixed by the limit block to ensure the stability of the connection. The limit block can also limit the position of the self-resetting buckle after installation to avoid damage to the structure or position errors, thereby ensuring the quality of the splicing. The self-resetting buckle has a certain energy dissipation capacity, which makes the structure have good seismic performance.

[0018] 3. By splicing the sliding rail at the end of the upper column with the self-resetting buckle at the end of the lower column and installing the limit block, the bridge pier can be assembled quickly without wet operation, and it can have good self-resetting ability and energy dissipation capacity under the action of an earthquake. After the earthquake, it can resume its normal use function without repair or with only slight repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a disassembled structural diagram of the composite column structure of the present invention in an unassembled state;

[0021] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the assembled composite column structure of the present invention;

[0022] Figure 3 A diagram showing the specific structure of the self-resetting clip in the combined column of the present invention and a schematic diagram showing the installation process of the self-resetting clip in conjunction with the connecting slide rail;

[0023] Figure 4 It is a cross-sectional view of the upper column and the lower column of the combined column structure of the present invention after being cut horizontally;

[0024] Figure 5 A schematic diagram of the assembly process of the composite column structure of the present invention;

[0025] Description of reference numerals:

[0026] 1: Upper column; 11: Inner steel pipe of upper column; 12: Outer steel pipe of upper column; 101: Connecting slide rail; 102: Slide groove; 103: Mounting hole; 104: Bottom cap of upper column; 105: Top cap of upper column; 106: Protrusion; 107: Upper mounting screw hole; 2: Lower column; 21: Inner steel pipe of lower column; 22: Outer steel pipe of lower column; 201: Self-resetting buckle; 2011: Fixing sleeve; 2012: Upper sliding cap; 2013: Bolt; 2014: Resetting spring; 202: Top cap of lower column; 203: Bottom cap of lower column; 204: Lower mounting screw hole; 3: Limit block; 4: Inter-column damper; 5: Filling concrete; 6: Prestressed tendons. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0030] like Figure 1-5 As shown, the present invention provides a prefabricated self-resetting energy-absorbing composite column structure, including: an upper column 1 and a lower column 2, two parallel connecting slide rails 101 are provided at the bottom of the upper column 1, a slide groove 102 is provided between the connecting slide rails 101, and a mounting hole 103 connected thereto is provided at the end of the slide groove 102, and a self-resetting buckle 201 that can slide along the slide groove 102 and be adapted to be engaged with the mounting hole 103 is provided at the top of the lower column 2, the limit block 3 is adapted to be slidably installed with the connecting slide rail 101, and is used to further limit the position of the self-resetting buckle 201 after being engaged, and the top and bottom ends of the limit block 3 are detachably connected to the bottom end of the upper column 1 and the top end of the lower column 2 respectively by fasteners.

[0031] In this embodiment, an upper column bottom cap 104 is provided at the bottom of the upper column 1, and an upper column top cap 105 is provided at the top of the upper column 1. The connecting slide rail 101 is provided at the bottom of the upper column bottom cap 104. The two connecting slide rails 101 are arranged in parallel, and the axis of the connecting slide rail 101 is perpendicular to the axis of the upper column 1. The top of the connecting slide rail 101 is provided with an open groove for installing the limit block 3. The slide groove 102 completely separates one end of the two connecting slide rails 101, and the other end of the two connecting slide rails 101 is integrally connected on the side of the mounting hole 103 away from the slide groove 102. A protrusion 106 is provided at the middle part of the connecting slide rail 101. The middle of the protrusion 106 is high and continuously decreases toward both sides, and the surface is a smooth curved surface.

[0032] A lower column top cap 202 is provided at the top of the lower column 2, a lower column bottom cap 203 is provided at the bottom of the lower column 2, and a self-resetting buckle 201 is mounted on the top of the lower column top cap 202. The self-resetting buckle 201 includes a fixed sleeve 2011 and an upper sliding cap 2012 slidably mounted on the top of the fixed sleeve 2011, wherein the fixed sleeve 2011 is vertically connected to the top of the lower column top cap 202 and has a vertical cavity provided therein. The upper sliding cap 2012 is provided with a stud 2013 extending into the cavity of the fixed sleeve 2011, and a reset spring 2014 is sheathed on the outside of the stud 2013. The upper sliding cap 2012 includes an inverted conical section and a cylindrical section connected to its bottom end, wherein the diameter of the cylindrical section is smaller than the width of the chute 102, and the diameter of the inverted conical section is larger than the width of the chute 102. When the self-resetting buckle 201 is assembled with the connecting slide rail 101 through the slide groove 102, the cylindrical section moves along the slide groove 102, and the protrusion 106 conflicts with the inverted cone section on one side of the upper sliding cap 2012, so that the return spring 2014 is compressed by the end face tension of the bolt 2013, thereby being able to push up the upper sliding cap 2012. When the upper sliding cap 2012 passes the highest point of the protrusion 106, the protrusion 106 conflicts with the inverted cone section on the other side of the upper sliding cap 2012, and the return spring 2014 is gradually reset. During this process, the upper sliding cap 2012 falls back to its original position, and the self-resetting buckle 201 slides into the mounting hole 103, realizing the assembly of the self-resetting buckle 201 with the connecting slide rail 101, and then the upper column 1 and the lower column 2 are assembled and connected.

[0033] The bottom profile of the limit block 3 is adapted to the surface shape of the connecting slide rail 101, and can extend into the open groove above the connecting slide rail 101 along the top thereof, and the right bottom of the limit block 3 can be pressed on the top and left side of the self-resetting buckle 201 to limit its position after assembly. An upper mounting screw hole 107 is provided on the bottom side of the upper column 1, and a lower mounting screw hole 204 is provided on the top side of the lower column 2. The two ends of the limit block 3 are respectively adapted to be installed with screws to the upper mounting screw hole 107 and the lower mounting screw hole 204. By means of the above-mentioned limit block 3, the connection quality of the upper column 1 and the lower column 2 after assembly can be made more stable, and they can be quickly assembled and connected at the construction site without the need for concrete grouting, and can be restored to their usability without repair or with only slight repair under the action of an earthquake, and can be quickly put into use, while achieving rapid assembly while ensuring connection quality, greatly saving the economic and time costs of post-earthquake repair.

[0034] In this embodiment, the upper column top cap 105, the upper column bottom cap 104, the lower column top cap 202, and the lower column bottom cap 203 are all made of high-strength metal materials, and the high-strength metal material is any one of high-strength steel, titanium alloy, high-strength aluminum alloy and high-strength magnesium alloy.

[0035] In this embodiment, an inter-column damper 4 is provided between the bottom end of the upper column 1 and the top end of the lower column 2. Two opposing damper mounting holes are provided on the side of the upper column base cap 104 and the lower column top cap 202, away from the stop block 3. The ends of the inter-column damper 4 engage with the damper mounting holes. The inter-column damper 4 can be any of a viscous damper, a viscoelastic damper, a metal damper, and a friction damper. The provision of the inter-column damper 4 helps dissipate structural energy, thereby reducing the displacement and acceleration responses of the structure under earthquakes, and thus providing the columns and structure with excellent seismic performance.

[0036] like Figure 4 As shown, in this embodiment, the upper column 1 includes a concentrically arranged upper column inner steel pipe 11 and an upper column outer steel pipe 12, and filling concrete 5 is poured between the upper column inner steel pipe 11 and the upper column outer steel pipe 12. The lower column 2 includes a concentrically arranged lower column inner steel pipe 21 and a lower column outer steel pipe 22, and filling concrete 5 is poured between the lower column inner steel pipe 21 and the lower column outer steel pipe 22. The upper column inner steel pipe 11, the upper column outer steel pipe 12, the lower column inner steel pipe 21 and the lower column outer steel pipe 22 are all made of any one of low carbon steel, high strength steel and stainless steel, and the filling concrete 5 is any one of steel fiber concrete, polyethylene fiber concrete, glass fiber concrete, polyethanol fiber concrete and high ductility and high strength concrete.

[0037] In this embodiment, prestressed tendons 6 are further provided inside the upper column 1 and the lower column 2. These tendons 6 pass through the upper column inner steel tube 11 and the lower column inner steel tube 21, respectively. The ends of the tendons 6 are anchored to the upper column top cap 105 and the lower column bottom cap 203, respectively. Pre-reserved holes are provided in the upper column bottom cap 104 and the lower column top cap 202 for the tendons 6 to pass through. The tendons 6 can be any one of high-strength steel bars, high-strength steel cables, carbon fiber tendons, glass fiber tendons, aramid fiber tendons, stainless steel tendons, galvanized steel bars, and high-strength steel wire. The tendons 6 provide tension and preload to the upper column 1 and the lower column 2.

[0038] like Figure 5 As shown, the construction method of the composite column structure of this embodiment includes the following steps:

[0039] First, the upper column 1, lower column 2, limit block 3, prestressed tendons 6 and inter-column dampers 4 are manufactured in the factory;

[0040] Secondly, place the lower column 2 vertically at the installation position, and vertically hoist the upper column 1 to the top of the lower column 2, so that the self-resetting buckle 201 slides along the slide groove 102 and then connects with the connecting slide rail 101. After the connection, the upper column 1 and the lower column 2 are coaxial;

[0041] Next, insert the limit block 3 into the open slot above the connecting slide rail 101, and fix the limit block 3 to the upper mounting screw hole 107 on the outside of the upper column bottom cap 104 and the lower mounting screw hole 204 on the outside of the lower column top cap 202 through bolts;

[0042] Next, align the two ends of the inter-column damper 4 with the two oppositely arranged damper mounting holes on the sides of the upper column bottom cap 104 and the lower column top cap 202, and secure them with bolts.

[0043] Finally, the prestressed tendons 6 are tensioned from the upper column top cap 105 to the center of the lower column bottom cap 203 by post-tensioning, and prestress is applied. The two ends of the prestressed tendons 6 are anchored to the upper column top cap 105 and the lower column bottom cap 203, thus completing the construction of this structure.

[0044] 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 with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prefabricated self-resetting energy-absorbing composite column structure, characterized in that: include: The upper column and the lower column, the bottom of the upper column is provided with two parallel connecting slide rails, a slide groove is provided between the connecting slide rails, the end of the slide groove is provided with a mounting hole connected thereto, the top of the lower column is provided with a self-resetting buckle that can slide along the slide groove and adapt to the mounting hole, the self-resetting buckle includes a fixed sleeve and an upper sliding cover cap slidably mounted on the top of the self-resetting buckle, the interior of the upper sliding cover cap is provided with a bolt extending into the interior of the fixed sleeve, the outside of the bolt is sheathed with a reset spring, the upper sliding cover cap includes an inverted cone section and a The cam is adapted to engage the guide rails of the upper and lower frames and to engage with the guide rails of the lower frame so that the cams can ...

2. The prefabricated self-resetting energy-absorbing composite column structure according to claim 1 is characterized in that: The bottom of the upper column is provided with an upper column bottom cap, the top of the upper column is provided with an upper column top cap, and the connecting slide rail is provided at the bottom of the upper column bottom cap.

3. The prefabricated self-resetting energy-absorbing composite column structure according to claim 2 is characterized in that: The top of the lower column is provided with a lower column top cap, the bottom of the lower column is provided with a lower column bottom cap, and the self-resetting buckle is installed on the top of the lower column top cap.

4. The prefabricated self-resetting energy-absorbing composite column structure according to claim 1 is characterized in that: An inter-column damper is further provided between the bottom end of the upper column and the top end of the lower column. The inter-column damper is any one of a viscous damper, a viscoelastic damper, a metal damper and a friction damper.

5. The prefabricated self-resetting energy-absorbing composite column structure according to claim 3 is characterized in that: The upper column body includes an upper column inner steel pipe and an upper column outer steel pipe arranged concentrically, and filling concrete is poured between the upper column inner steel pipe and the upper column outer steel pipe. The lower column body includes a lower column inner steel pipe and a lower column outer steel pipe arranged concentrically, and filling concrete is poured between the lower column inner steel pipe and the lower column outer steel pipe. The filling concrete is any one of steel fiber concrete, polyethylene fiber concrete, glass fiber concrete, polyethanol fiber concrete and high ductility and high strength concrete.

6. The prefabricated self-resetting energy-absorbing composite column structure according to claim 5, characterized in that: Prestressed tendons are also provided inside the upper column and the lower column, and the prestressed tendons pass through the steel pipe inside the upper column and the steel pipe inside the lower column in sequence. The two ends of the prestressed tendons are anchored to the top cap of the upper column and the bottom cap of the lower column respectively. The prestressed tendons are any one of high-strength steel bars, high-strength steel cables, carbon fiber tendons, glass fiber tendons, aramid fiber tendons, stainless steel tendons, galvanized steel bars and high-strength steel wires.

7. The prefabricated self-resetting energy-absorbing composite column structure according to claim 5, characterized in that: The upper column top cap, the upper column bottom cap, the lower column top cap and the lower column bottom cap are all made of high-strength metal materials, and the high-strength metal materials are any one of high-strength steel, titanium alloy, high-strength aluminum alloy and high-strength magnesium alloy. The upper column inner steel pipe, the upper column outer steel pipe, the lower column inner steel pipe and the lower column outer steel pipe are all made of any one of low-carbon steel, high-strength steel and stainless steel.

8. The prefabricated self-resetting energy-absorbing composite column structure according to claim 1 is characterized in that: An upper mounting screw hole is provided on the bottom side of the upper column, and a lower mounting screw hole is provided on the top side of the lower column. Both ends of the limit block are respectively adapted to be mounted with screws in the upper mounting screw hole and the lower mounting screw hole.

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