Prefabricated self-resetting energy dissipation combination column structure

Abstract

The invention provides a prefabricated self-resetting energy dissipation combination column structure, and relates to the technical field of seismic resistance and seismic mitigation and isolation devices. The device comprises an upper column body and a lower column body, two parallel connecting sliding rails are arranged at the bottom of the upper column body, a sliding groove is formed between the connecting sliding rails, a mounting hole communicated with the sliding groove is formed in the tail end of the sliding groove, and a self-resetting buckle which can slide along the sliding groove and is clamped with the mounting hole in a matched mode is arranged at the top of the lower column body. The limiting block and the connecting sliding rail are installed in a matched and sliding mode, and the top end and the bottom end of the limiting block are detachably connected with the upper column body and the lower column body through fasteners respectively. The connecting sliding rail at the bottom of the upper column body and the self-resetting buckle at the top of the lower column body are rapidly spliced to achieve rapid and stable installation of the column bodies, the advantage of being easy and convenient to construct is achieved, all components are prefabricated in a factory and rapidly assembled on a construction site, and material waste and environmental pollution are reduced while the connecting quality and safety are guaranteed; and the method has good economical efficiency.

Description

Technical Field

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

[0002] Cast-in-place concrete columns have been widely used, but cast-in-place concrete construction has prominent problems such as large on-site labor, high risk of casualties, complex procedures, difficult quality control, waste of resources and serious environmental pollution. Assembled columns are prefabricated in quality-controlled factories and transported to construction sites for rapid assembly. Therefore, they have the advantages of fast construction speed, simple construction procedures and low environmental pollution, which makes up for the shortcomings of cast-in-place concrete columns.

[0003] The patent application with 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 is arranged inside the lower end of the prefabricated column body, concrete is poured into the reinforcement sleeve through the grouting overflow hole, and the grouting overflow hole is sealed after the pouring is completed to complete the assembly of the concrete assembly column; however, this type of assembly column still has a cast-in-place construction part, and the construction quality is highly dependent on the construction site environment and personnel, and it is still difficult to guarantee the connection quality and construction convenience to a certain extent.

[0004] The patent application with publication number CN114482405A discloses a UHPC-steel tube confined concrete assembly column and a construction method thereof, comprising a spliced ​​column formed by vertically overlapping and splicing a plurality of hollow prefabricated UHPC-steel casing segments and cast-in-place concrete poured in the middle of the spliced ​​column, wherein two upper and lower adjacent prefabricated UHPC-steel casing segments are connected together by a connecting assembly; however, this type of assembly column still dissipates energy through the plastic hinge of the column itself under the action of an earthquake. When encountering a high-intensity earthquake, the plastic hinge is severely damaged and cannot be repaired, resulting in the need for demolition and reconstruction, resulting 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 concrete grouting, can be quickly put into use, and ensures the connection quality while achieving rapid assembly, 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 two parallel connecting slide rails are arranged at the bottom of the upper column, a slide groove is arranged between the connecting slide rails, and a mounting hole connected to the slide groove is arranged at the end of the slide groove, and a self-resetting buckle capable of sliding along the slide groove and being adapted and snap-connected with the mounting hole is arranged at the top of the lower column, the limit block is adapted and slidably installed with the connecting slide rail, and the top and bottom ends of the limit block are detachably connected to the upper column and the lower column respectively through fasteners.

[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 at the top of the lower column, a lower column bottom cap is provided at the bottom of the lower column, and the self-resetting buckle is installed at the top of the lower column top cap.

[0010] Preferably, the self-resetting buckle includes a fixed sleeve and an upper sliding cover cap slidably mounted on the top thereof, the interior of the upper sliding cover cap is provided with a bolt extending into the interior of the fixed sleeve, the exterior of the bolt is sleeved with a reset spring, the upper sliding cover cap includes an inverted cone section and a cylindrical section connected to its bottom end, the diameter of the cylindrical section is smaller than the width of the slide groove, and the diameter of the conical section is larger than the width of the slide groove.

[0011] Preferably, a protrusion is provided on the connecting slide rail, and when the self-resetting buckle passes through the slide groove, the protrusion can lift up the upper slide cap.

[0012] 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.

[0013] Preferably, the upper column body includes an upper column inner steel pipe and an upper column outer steel pipe which are 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 which are 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.

[0014] Preferably, 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 respectively anchored and connected to the top cap of the upper column and the bottom cap of the lower column. 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.

[0015] 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, 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.

[0016] 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, and both ends of the limit block are respectively adapted and installed with the upper mounting screw hole and the lower mounting screw hole by screws.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The column can be quickly and stably 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. It 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.

[0019] 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 limit the position of the self-resetting buckle after installation to avoid its structure being damaged or the position being cheap, ensuring the splicing quality. The self-resetting buckle has a certain energy dissipation capacity, so that the structure has good seismic performance;

[0020] 3. Through the splicing between the sliding rail at the end of the upper column and the self-resetting buckle at the end of the lower column and the installation limit of 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 earthquake. After the earthquake, it can resume its normal use function without repair or with only a little repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a disassembled structural diagram of the combined column structure of the present invention in an unassembled state;

[0023] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the combined column structure of the present invention after assembly;

[0024] Figure 3 It is a specific structural diagram of the self-resetting buckle in the combined column of the present invention and a schematic diagram of the installation process of the self-resetting buckle in cooperation with the connecting slide rail;

[0025] 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 transversely;

[0026] Figure 5 It is a schematic diagram of the assembly process of the combined column structure of the present invention;

[0027] Description of reference numerals:

[0028] 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 cover cap; 2013: bolt; 2014: reset 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

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] 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 indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the 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 indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-5 As shown, the present invention provides a prefabricated self-resetting energy-absorbing composite column structure, comprising: an upper column 1 and a lower column 2, the bottom of the upper column 1 is provided with two parallel connected slide rails 101, a slide groove 102 is provided between the connecting slide rails 101, and the end of the slide groove 102 is provided with a mounting hole 103 connected thereto, and the top of the lower column 2 is provided with a self-resetting buckle 201 that can slide along the slide groove 102 and fit and engage with the mounting hole 103, the limit block 3 is fitted and 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 through fasteners.

[0033] In this embodiment, an upper column bottom cap 104 is provided at the bottom of the upper column 1, an upper column top cap 105 is provided at the top of the upper column 104, a connecting slide rail 101 is provided at the bottom of the upper column bottom cap 104, two connecting slide rails 101 are arranged in parallel, the axis of the connecting slide rail 101 is perpendicular to the axis of the upper column 1, an open groove for installing the limit block 3 is provided on the top of the connecting slide rail 101, the slide groove 102 completely separates one end of the two connecting slide rails 101, and the other ends of the two connecting slide rails 101 are integrally connected on the side of the mounting hole 103 away from the slide groove 102, and a protrusion 106 is provided at the middle part of the connecting slide rail 101. The middle height of the protrusion 106 continuously decreases toward both sides, and the surface is a smooth curved surface.

[0034] The top of the lower column 2 is provided with a lower column top cap 202, the bottom of the lower column 2 is provided with a lower column bottom cap 203, and the self-resetting buckle 201 is installed 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 installed on the top thereof, wherein the fixed sleeve 2011 is vertically connected to the top of the lower column top cap 202, and a vertical cavity is provided inside thereof, a stud 2013 extending into the internal cavity of the fixed sleeve 2011 is provided inside the upper sliding cap 2012, and a reset spring 2014 is sleeved outside the stud 2013, and the upper sliding cap 2012 includes an inverted cone section and a cylindrical section connected to the bottom thereof, wherein the diameter of the cylindrical section is smaller than the width of the slide slot 102, and the diameter of the inverted cone section is larger than the width of the slide slot 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 cover cap 2012, so that the return spring 2014 is compressed by the end surface tension of the bolt 2013, so that the upper sliding cover cap 2012 can be lifted up. When the upper sliding cover 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 cover cap 2012, and the return spring 2014 is gradually reset. During this process, the upper sliding cover 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, thereby assembling and connecting the upper column 1 and the lower column 2.

[0035] The bottom contour 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 and installed with the upper mounting screw hole 107 and the lower mounting screw hole 204 by screws. Through 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 can be quickly assembled and connected without concrete grouting at the construction site, and can restore its use function without repair or with slight repair under the action of an earthquake, and can be quickly put into use, while achieving rapid assembly and ensuring the connection quality, greatly saving the economic and time costs of post-earthquake repair.

[0036] 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.

[0037] In this embodiment, an inter-column damper 4 is further provided between the bottom end of the upper column 1 and the top end of the lower column 2. Two damper mounting holes arranged opposite to each other are provided on the side of the upper column bottom cap 104 and the lower column top cap 202 away from the limit block 3. Both ends of the inter-column damper 4 are installed in cooperation with the damper mounting holes. The inter-column damper 4 is any one of a viscous damper, a viscoelastic damper, a metal damper and a friction damper. The inter-column damper 4 can help the structure dissipate energy by providing the inter-column damper 4, thereby reducing the displacement response and acceleration response of the structure under earthquake action, so that the column and the structure have good seismic performance.

[0038] like Figure 4 As shown, in this embodiment, the upper column 1 includes an upper column inner steel pipe 11 and an upper column outer steel pipe 12 which are concentrically arranged, 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 lower column inner steel pipe 21 and a lower column outer steel pipe 22 which are concentrically arranged, 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.

[0039] In this embodiment, the upper column 1 and the lower column 2 are further provided with prestressed tendons 6, which pass through the upper column inner steel pipe 11 and the lower column inner steel pipe 21 in sequence, and the two ends of the prestressed tendons 6 are respectively anchored and connected with the upper column top cap 105 and the lower column bottom cap 203, and the upper column bottom cap 104 and the lower column top cap 202 are reserved with channels for the prestressed tendons 6 to pass through, and the prestressed tendons 6 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. The prestressed tendons 6 can provide tensioning force to the upper column 1 and the lower column 2, and apply pre-tightening force.

[0040] like Figure 5 As shown, the construction method of the composite column structure of this embodiment includes the following steps:

[0041] First, the upper column 1, the lower column 2, the limit block 3, the prestressed tendons 6 and the inter-column damper 4 are manufactured in the factory;

[0042] Secondly, the lower column 2 is placed vertically at the installation position, and the upper column 1 is vertically hoisted to the top of the lower column 2, so that the self-resetting buckle 201 slides along the slide groove 102 and is spliced ​​with the connecting slide rail 101. After splicing, the upper column 1 and the lower column 2 are coaxial;

[0043] Next, insert the limit block 3 into the open groove above the connecting slide rail 101, and fix the limit block 3 to the upper mounting screw hole 107 on the outer side of the upper column bottom cap 104 and the lower mounting screw hole 204 on the outer side of the lower column top cap 202 by means of bolts;

[0044] 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 fix them with bolts;

[0045] 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 method, and prestress is applied, and the two ends of the prestressed tendons 6 are anchored and connected to the upper column top cap 105 and the lower column bottom cap 203, thus completing the construction of this structure.

[0046] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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: An upper column and a lower column, the bottom of the upper column is provided with two parallel connected 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 fit with the mounting hole, the limit block is adapted for sliding installation with the connecting slide rail, and the top and bottom ends of the limit block are detachably connected to the upper column and the lower column respectively by fasteners.

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: The self-resetting buckle includes a fixed sleeve and an upper sliding cover cap slidably mounted on the top thereof, the interior of the upper sliding cover cap is provided with a bolt extending into the interior of the fixed sleeve, the exterior of the bolt is sleeved with a reset spring, the upper sliding cover cap includes an inverted cone section and a cylindrical section connected to the bottom end thereof, the diameter of the cylindrical section is smaller than the width of the slide groove, and the diameter of the conical section is larger than the width of the slide groove.

5. The prefabricated self-resetting energy-absorbing composite column structure according to claim 4 is characterized in that: The connecting slide rail is provided with a protrusion, and when the self-resetting buckle passes through the slide groove, the protrusion can lift up the upper slide cover cap.

6. The prefabricated self-resetting energy-absorbing composite column structure according to claim 1 is characterized in that: An inter-column damper is also arranged 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.

7. 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 which are 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 which are 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.

8. The prefabricated self-resetting energy-absorbing composite column structure according to claim 7 is characterized in that: Prestressed tendons are also arranged 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 and connected 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.

9. The prefabricated self-resetting energy-absorbing composite column structure according to claim 7, 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 material is 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.

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

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