A full bolt anti-buckling brace and preparation method thereof

Abstract

A fully bolted anti-buckling brace and a preparation method thereof, belonging to the technical field of building structure engineering. Two groups of end stiffeners and at least two groups of limiting ribs are provided on the core plate, the two groups of end stiffeners are respectively arranged at the two ends of the core plate, and the limiting ribs are arranged between the two groups of end stiffeners along the axial direction of the core plate; an end constraint unit is provided between the end stiffener and the adjacent limiting ribs; a middle constraint unit is provided between each two adjacent limiting ribs, and the upper end of the end constraint unit and the upper end of the middle constraint unit, as well as the lower end of the end constraint unit and the lower end of the middle constraint unit are respectively connected to the corresponding constraint unit cover plate. The present invention is easy to process and transport, reduces the amount of engineering and resource consumption; realizes the core plate to enter plasticity after buckling in multiple sections, and gives full play to its energy consumption capacity; the construction is simple and quick, which improves the work efficiency while ensuring the safety of the structure; avoids the problem of regular maintenance required for traditional concrete supports, and is green and energy-saving.

Description

Technical Field

[0001] The invention relates to a full-bolt anti-buckling brace and a preparation method thereof, and belongs to the technical field of building structure engineering. Background Art

[0002] my country is a country with a high incidence of earthquake accidents. How to ensure the ductility of buildings under the action of strong earthquakes and thereby buy more time for the people to escape is a key factor in structural design.

[0003] Buckling-resistance braces can achieve plastic deformation to dissipate earthquake effects and avoid damage to important parts of the structure through their own yielding during earthquakes. However, current buckling-resistance braces have the following problems during use:

[0004] 1. The integral support has a large deadweight, which increases the requirements for transportation and hoisting;

[0005] 2. Under the action of reciprocating load, after the core plate of the support buckles and deforms, it will usually be damaged at a certain place, and the rest of the parts will be unable to continue to bear the load, resulting in the inability of the support to fully exert its energy dissipation capacity, thus causing a waste of core plate materials. In order to achieve the required energy dissipation effect, the amount of support needs to be increased, which in turn causes problems such as increased project costs and increased project volume;

[0006] 3. When designing the support, the complicated components not only increase the processing cost, but also add many complicated processes to the production of the support, making the manufacturing process complicated;

[0007] 4. The support of the constraint unit uses concrete, which requires concrete maintenance. Not only is the processing cycle long, but the concrete cannot be recycled, which is inconsistent with the green construction, energy conservation and emission reduction policies advocated by the country.

[0008] Therefore, a support with stable performance, good energy consumption, easy installation and no welding operation on site is needed. Summary of the invention

[0009] In order to solve the problems existing in the background technology, the present invention provides a full-bolt anti-buckling brace and a preparation method thereof.

[0010] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a full-bolt anti-buckling support, including a core plate, a limiting rib plate, an end stiffening rib, a constraint unit cover plate, an end constraint unit and a middle constraint unit; the core plate is provided with two groups of end stiffening ribs and at least two groups of limiting rib plates, the two groups of end stiffening ribs are respectively arranged at the two ends of the core plate, and the limiting rib plate is arranged between the two groups of end stiffening ribs along the axial direction of the core plate; an end constraint unit is arranged between the end stiffening rib and the adjacent limiting rib plate; a middle constraint unit is arranged between every two adjacent limiting rib plates, and the upper end of the end constraint unit and the upper end of the middle constraint unit as well as the lower end of the end constraint unit and the lower end of the middle constraint unit are respectively connected to the corresponding constraint unit cover plate.

[0011] A method for preparing a full-bolt buckling-restrained brace of the present invention comprises the following steps:

[0012] S1: Determine the length of the core plate and the constraint unit cover plate and the number of the limiting ribs and the middle constraint units;

[0013] S2: Connect the limiting ribs and the end stiffeners to the core plate;

[0014] S3: Each C-shaped plate of the two sets of end restraint units is respectively arranged on the corresponding side of the core plate;

[0015] S4: Filling material is arranged between each C-shaped plate and the core plate described in S, so that the filling material, the core plate and the corresponding C-shaped plate are all arranged in close contact;

[0016] S5: Install and fix the two sets of end restraint units to the restraint unit cover plates;

[0017] S6: Each C-shaped plate of all the middle restraint units is arranged on the corresponding side of the core plate;

[0018] S7: Filling material is arranged between each C-shaped plate and the core plate described in S, so that the filling material, the core plate and the corresponding C-shaped plate are all fitted together;

[0019] S8: All middle restraint units are installed and fixed to the restraint unit cover plate to complete the preparation of the full bolt anti-buckling support.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The invention has fewer types of parts, no on-site welding, a reasonable and simple design of the constraint unit, a simple and fast full bolt connection, an improved mechanized preparation method, a light weight of the component monomer, easy processing and transportation, simple connection, safe and reliable, and reduced engineering workload and resource consumption;

[0022] 2. The present invention realizes the multi-section buckling energy dissipation of the core plate through the limiting rib plate, and sets the end stiffener rib at the end of the core plate, which has reliable performance, good rigidity and simple structure, and realizes the core plate to enter plasticity after buckling in multiple sections, giving full play to its energy dissipation capacity; it avoids the problem of overall failure of the traditional support after damage at a certain place, saves the core plate, and saves the construction cost;

[0023] 3. Since the present invention improves the energy consumption capacity of the support, the number of supports required by the structure is reduced, making the construction simple and quick, saving labor, shortening the construction period, reducing the construction cost, improving work efficiency and ensuring the safety of the structure;

[0024] 4. The core plate of the present invention is made of low-yield point steel or aluminum alloy, etc., which avoids the problem of regular maintenance required for traditional concrete supports and is green and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 yes Figure 1 The main view;

[0027] Figure 3 is a top view of soil 1;

[0028] Figure 4 yes Figure 1 Side view of

[0029] Figure 5 yes Figure 1 Exploded diagram of

[0030] Figure 6 It is a schematic diagram of the connection relationship between the core plate, the limiting rib plate and the end stiffener;

[0031] Figure 7 It is a structural schematic diagram of the end constraint unit;

[0032] Figure 8 It is a structural diagram of the middle constraint unit. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the 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 making creative work are within the scope of protection of the present invention.

[0034] A full-bolt anti-buckling support, comprising a core plate 1, a limiting rib plate 2, an end stiffening rib 3, a constraint unit cover plate 4, an end constraint unit 5 and a middle constraint unit 6; the material of the core plate 1 is low-yield point steel or aluminum alloy, etc., two groups of end stiffening ribs 3 and at least two groups of limiting rib plates 2 are provided on the core plate 1, the two groups of end stiffening ribs 3 are respectively arranged at the two ends of the core plate 1, and the limiting rib plates 2 are evenly distributed between the two groups of end stiffening ribs 3 along the axial direction of the core plate 1; an end constraint unit 5 is provided between the end stiffening rib 3 and the adjacent limiting rib plates 2; a middle constraint unit 6 is provided between every two adjacent limiting rib plates 2, and the upper end of the end constraint unit 5 and the upper end of the middle constraint unit 6 and the lower end of the end constraint unit 5 and the lower end of the middle constraint unit 6 are respectively connected to the corresponding constraint unit cover plate 4.

[0035] The end stiffening rib 3 is provided with bolt holes, and the end constraint unit 5 and the middle constraint unit 6 are connected to the constraint unit cover plate 4 by bolts. The adjacent parts connected by bolts can be disassembled, which is convenient for transportation and on-site installation, reduces the difficulty of transportation, avoids on-site welding, reduces the difficulty of work, and ensures the installation quality.

[0036] Each group of the limiting ribs 2 includes two limiting ribs 2 , and the two limiting ribs 2 are arranged perpendicular to the core plate 1 and symmetrically arranged with the core plate 1 as the symmetry axis.

[0037] The limiting rib 2 is in the shape of a quadrilateral, a triangle or a semicircle.

[0038] Each group of the end stiffeners 3 includes two end stiffeners 3 , and the two end stiffeners 3 are arranged perpendicular to the core plate 1 and symmetrically arranged with the core plate 1 as a symmetry axis.

[0039] The end constraint unit 5 and the middle constraint unit 6 each include two C-shaped plates, which are symmetrically arranged on both sides of the core plate 1, and the openings of the C-shaped plates are arranged outward, and the two horizontal plates of each C-shaped plate are respectively connected to the corresponding constraint unit cover plate 4, and the outer ends of the vertical plates of each C-shaped plate of the end constraint unit 5 are provided with end stiffener avoidance grooves.

[0040] There is a gap between each of the limiting ribs 2 and the adjacent C-shaped plates. The limiting ribs 2 divide the core plate 1 into multiple sections. When the building is subjected to force, the limiting ribs 2 act on the adjacent constraint units. Through the limiting action of the limiting ribs 2, each section of the core plate 1 is allowed to buckle separately, avoiding the failure of the entire support due to the failure of some positions to yield first and then to fail in one place, thus achieving the effect of multi-section energy consumption. The energy consumption capacity is improved, the number of supports required for the structure is reduced, and the engineering cost is reduced.

[0041] A baffle is provided at one end of each C-shaped plate adjacent to the corresponding limiting rib 2. The baffle can increase the interaction area between the C-shaped plate and the adjacent limiting rib 2, thereby more effectively realizing force transmission.

[0042] A filling material 7 is provided between the vertical plate and the core plate 1 of each C-shaped plate. The filling material 7 is a non-adhesive material, such as rubber or silicone.

[0043] A method for preparing a full-bolt buckling-restrained brace of the present invention comprises the following steps:

[0044] S1: Determine the length of the core plate 1 and the constraint unit cover plate 4 and the number of the limiting ribs 2 and the middle constraint unit 6;

[0045] Arrange the height and width of the structure of the present invention as required, select the specifications of the support with suitable length, determine the length of the core plate 1 by calculation, set a reasonable number of limit ribs 2 and middle constraint units 6, and design the constraint unit cover plate 4 according to the determined constraint unit;

[0046] S2: The limiting rib plate 2 and the end stiffening rib 3 can be connected to the core plate 1 by positioning welding in the factory;

[0047] S3: Each C-shaped plate of the two groups of end restraining units 5 is respectively arranged on the corresponding side of the core plate 1;

[0048] S4: a filling material 7 is arranged between each C-shaped plate and the core plate 1 described in S3, so that the filling material 7 is fitted to the core plate 1 and the corresponding C-shaped plate;

[0049] S5: Install and fix the two sets of end restraint units 5 to the restraint unit cover plates 4;

[0050] S6: Arrange each C-shaped plate of all the middle constraint units 6 on the corresponding side of the core plate 1;

[0051] S7: A filling material 7 is arranged between each C-shaped plate and the core plate 1 described in S6, so that the filling material 7 is fitted to the core plate 1 and the corresponding C-shaped plate;

[0052] S8: All the middle restraint units 6 are installed and fixed to the restraint unit cover plate 4 to complete the preparation of the full-bolt anti-buckling support. After all the installation is completed, each bolt should be checked to achieve the integrity of the support and ensure the firmness of the installation.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fully bolted buckling-restrained brace, characterized in that: The invention comprises a core plate (1), a limiting rib plate (2), an end stiffening rib (3), a constraint unit cover plate (4), an end stiffening unit (5) and a middle stiffening unit (6); the core plate (1) is made of low-yield point steel or aluminum alloy; two groups of end stiffening ribs (3) and at least two groups of limiting rib plates (2) are provided on the core plate (1); the two groups of end stiffening ribs (3) are respectively arranged at two ends of the core plate (1); the limiting rib plate (2) is arranged between the two groups of end stiffening ribs (3) along the axial direction of the core plate (1); an end stiffening unit (5) is provided between the end stiffening rib (3) and the adjacent limiting rib plate (2); a middle stiffening unit (6) is provided between every two adjacent limiting rib plates (2); the upper end of the end stiffening unit (5) and the upper end of the middle stiffening unit (6) and the lower end of the end stiffening unit (5) and the middle stiffening unit (6) are approximately The lower ends of the beam units (6) are respectively connected to the corresponding constraint unit cover plates (4); the end stiffening ribs (3) are provided with bolt holes, and the end constraint units (5) and the middle constraint units (6) are connected to the constraint unit cover plates (4) by bolts; each group of the end stiffening ribs (3) comprises two end stiffening ribs (3), and the two end stiffening ribs (3) are both arranged perpendicular to the core plate (1) and symmetrically arranged with the core plate (1) as the symmetry axis; the end constraint units (5) and the middle constraint units (6) each comprise two C-shaped plates, and the two C-shaped plates are symmetrically arranged on both sides of the core plate (1), and the openings of the C-shaped plates are arranged outwards, and the two horizontal plates of each C-shaped plate are respectively connected to the corresponding constraint unit cover plates (4), and the outer ends of the vertical plates of each C-shaped plate of the end constraint unit (5) are provided with end stiffening rib avoidance grooves.

2. The all-bolt buckling-restrained brace according to claim 1, characterized in that: Each group of the limiting ribs (2) comprises two limiting ribs (2), and the two limiting ribs (2) are arranged perpendicular to the core plate (1) and symmetrically arranged with the core plate (1) as a symmetry axis.

3. The all-bolt buckling-restrained brace according to claim 2, characterized in that: The limiting rib (2) is in the shape of a quadrilateral, a triangle or a semicircle.

4. The all-bolt buckling-restrained brace according to claim 3, characterized in that: A gap is provided between each of the limiting rib plates (2) and the adjacent C-shaped plates.

5. The all-bolt buckling-restrained brace according to claim 4, characterized in that: A baffle is provided at one end of each C-shaped plate adjacent to the corresponding limiting rib plate (2).

6. The all-bolt buckling-restrained brace according to claim 5, characterized in that: Filling material (7) is provided between the vertical plate and the core plate (1) of each C-shaped plate.

7. A method for preparing a fully bolted buckling-restrained brace according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: S1: Determine the length of the core plate (1) and the constraint unit cover plate (4) and the number of the limiting ribs (2) and the middle constraint units (6); S2: connecting the limiting rib plate (2) and the end stiffening rib (3) to the core plate (1); S3: arranging each C-shaped plate of the two groups of end restraining units (5) on the corresponding side of the core plate (1); S4: a filling material (7) is arranged between each C-shaped plate and the core plate (1) described in S3, so that the filling material (7) is fitted to the core plate (1) and the corresponding C-shaped plate; S5: installing and fixing the two sets of end restraint units (5) to the restraint unit cover plates (4); S6: each C-shaped plate of all the middle restraining units (6) is respectively arranged on the corresponding side of the core plate (1); S7: a filling material (7) is arranged between each C-shaped plate and the core plate (1) described in S6, so that the filling material (7) is fitted to the core plate (1) and the corresponding C-shaped plate; S8: All the middle restraint units (6) are installed and fixed to the restraint unit cover plate (4), completing the preparation of the full-bolt buckling-restrained brace.

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