CN210684975U - Embedded weak connection structure - Google Patents
Embedded weak connection structure Download PDFInfo
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- CN210684975U CN210684975U CN201920962035.1U CN201920962035U CN210684975U CN 210684975 U CN210684975 U CN 210684975U CN 201920962035 U CN201920962035 U CN 201920962035U CN 210684975 U CN210684975 U CN 210684975U
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Abstract
The utility model discloses an embedded weak connection structure, which comprises a steel beam, a sliding support, a bracket and a mounting bolt, wherein the main structure of the bracket is H-shaped, the horizontal structure is a bearing surface, the vertical structures on two sides are side plates, and the upper side of the bracket is a semi-closed hollow cavity with an opening at the upper end; the steel beam is a height-variable component with thin end part and thick middle part; the end part of the steel beam is embedded and connected in the semi-closed hollow cavity of the bracket; the height of bracket is less than or equal to the height of girder steel, and the up end of bracket is not higher than the up end of girder steel after the installation, and the lower terminal surface of bracket is not less than the lower terminal surface of girder steel. The weak connection structure realizes the high-rise relation by downward movement of the bracket bearing surface, and the end part of the steel beam and the sliding support are hidden in the height of the bracket. Through the improvement of the weak connection structure, the beam column can be reliably connected under the condition of smaller height requirement, and the weak connection structure has certain sliding deformation capacity, can realize that redundant protruding structures do not appear at the vertical face connection part, and meets the requirements of the building vertical face.
Description
Technical Field
The utility model belongs to the technical field of the building engineering technique and specifically relates to a design a weak connection structure that is arranged in corridor to use among the large-scale construction.
Background
With the development of large public buildings, commercial complexes and large office buildings, weak connection structures appear in more and more buildings. In actual engineering, the connection is realized through girder steel, support, bracket etc. that slide to general weak connection, but these three all need certain height to satisfy the atress requirement, and the stack of three, then the whole height requirement is great, often has a great protruding joint construction at beam column connection position, and the facade influence to the building is great. As shown in fig. 1, 2 and 3, the lower side of the end of the steel beam 1 ' is connected with a bracket 3 ' fixedly connected to a column 5 ' through a mounting bolt 4 ' and a sliding support 2 ', and as is apparent from the figure, the total height of the connection after installation is the height of the bracket plus the height of the sliding support plus the height of the steel beam (i.e., h total = h n + h beam), and the beam-column connection part has a large protruding structure, which affects the appearance of the external facade of the building. Therefore, we have improved the weak connection structure of the beam-column connection to solve the above problems.
Disclosure of Invention
The utility model discloses the purpose is: the improved weak connection structure effectively reduces the overall height, can realize reliable connection of beams and columns under the condition of smaller height requirement, has certain sliding deformation capacity, can realize no redundant protruding structure at a vertical face connection part, and meets the requirements of building vertical faces.
The technical scheme of the utility model is that: an embedded weak connection structure comprises a steel beam, a sliding support, a bracket and a mounting bolt, wherein the end part of the steel beam is connected with the bracket through the sliding support and the mounting bolt, the bracket is fixedly connected with a column, the section of the main structure of the bracket is H-shaped, the horizontal structure of the bracket is a bearing surface, the vertical structures at two sides of the bracket are side plates, and the upper side of the bracket is a semi-closed hollow cavity with an opening at the upper end; the steel beam is a height-variable component with thin end part and thick middle part; the end part of the steel beam is embedded and connected in the semi-closed hollow cavity of the bracket; the height that highly is less than or equal to the girder steel of bracket, and the up end of installation back bracket is not higher than the up end of girder steel, and the lower terminal surface of bracket is not less than the lower terminal surface of girder steel.
Preferably, the receiving surface for supporting the end of the steel beam on the bracket is arranged at the middle lower position of the bracket in the vertical direction.
Preferably, the sliding support is installed in the middle of the upper end of the bearing surface, and the bearing surface, the sliding support and the steel beam are sequentially connected from bottom to top through the mounting bolt.
Preferably, the lower terminal surface of girder steel tip is fixed and is equipped with four girder steel limiting plates, and the inner space that four girder steel limiting plates surround is sliding support's installation region, is the rectangle.
Preferably, a support limiting plate is fixedly arranged on the upper end surface of the bearing surface; the support limiting plate is arranged on one side far away from the side connected with the column and is parallel to the column.
Preferably, the lower end surface of the steel beam limiting plate is lower than the upper end surface of the support limiting plate
Preferably, the lower end surface of the bearing surface is fixedly provided with a plurality of vertical reinforcing ribs.
Preferably, the outer side of the upper end parts of the two side plates is fixedly provided with a flange plate perpendicular to the side plates.
Preferably, one or more horizontal reinforcing ribs vertical to the side plates are fixedly arranged on the outer sides of the middle parts of the two side plates.
Preferably, the mounting bolt is mounted in a manner that a fixed nut is arranged at the upper end and a movable nut and a fixing device are arranged at the lower end.
The utility model has the advantages that:
1. compared with the prior art, the bracket bearing surface is moved downwards to the middle-lower position of the integral bracket, so that the end part of the steel beam and the sliding support are hidden in the bracket height in the story height relation;
2. the end part of the steel beam is designed into a height-variable component, namely the principle that the bending moment of the end part of the steel beam is small and the bending moment of the span is large when a weak connection structure is reasonably utilized, the height of the end part of the steel beam is reduced under the condition of meeting the shearing resistance, and the height of the steel beam is increased in the span of the steel beam according to the actual bending moment and deflection control requirements;
3. a plurality of reinforcing ribs are arranged below the corbel receiving surface and used for ensuring the local bending resistance and the local compression resistance of the steel corbel receiving surface;
4. the upper end parts of the outer sides of the two side plates of the bracket are provided with flange plates, and the middle part of the bracket is provided with horizontal reinforcing ribs for ensuring the local bending resistance and the local compression resistance of the bracket side plates; when the flange plate is accidentally damaged, the horizontal reinforcing rib can replace the flange plate to form a two-defense line for stressing the side plate;
5. the steel beam and the bracket are respectively provided with the limiting devices, under the action of medium and large earthquakes, the sliding support has certain deformation energy consumption capacity, if the sliding support is damaged, the steel beam is prevented from falling off through the side plate of the bracket and the support limiting plate, and a secondary defense line for preventing the steel beam from falling off is formed.
Drawings
The invention will be further described with reference to the following drawings and examples:
FIG. 1 is a schematic diagram of a weak link configuration as is common in the prior art;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic structural diagram of a weak link structure according to the first embodiment;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 4;
FIG. 7 is a cross-sectional view taken along line E-E of FIG. 4;
FIG. 8 is an exterior elevational view of the weak link configuration after installation;
FIG. 9 is a schematic structural view of a weak link structure according to a second embodiment;
FIG. 10 is a sectional view taken along line F-F of FIG. 9;
wherein: 1. a steel beam; 1-1, a steel beam limiting plate; 2. a sliding support; 2-1, supporting seat limiting plates; 3. a bracket; 3-1, bearing surface; 3-2, side plates; 3-3, vertical reinforcing ribs; 3-4, a flange plate; 3-5, horizontal reinforcing ribs; 4. installing a bolt; 5. a column.
Detailed Description
The first embodiment is as follows:
as shown in the accompanying figures 4-8, the embedded weak connection structure comprises a steel beam 1, a sliding support 2, a bracket 3 and a mounting bolt 4, wherein the end part of the steel beam 1 is connected with the bracket 3 through the sliding support 2 and the mounting bolt 4, and the bracket 3 is fixedly connected with a column 5. The main structure section of the bracket 3 is H-shaped, the horizontal structure is a bearing surface 3-1, the vertical structures at two sides are side plates 3-2, and the upper side is a semi-closed hollow cavity with an opening at the upper end; the steel beam 1 is a height-variable component with thin end part and thick middle part; the end part of the steel beam 1 is embedded and connected in the semi-closed hollow cavity of the bracket 3; and a bearing surface 3-1 for supporting the end part of the steel beam 1 on the bracket 3 is arranged at the middle-lower position of the bracket 3 in the vertical direction. The sliding support 2 is installed in the middle of the upper end of the bearing surface 3-1, and the bearing surface 3-1, the sliding support 2 and the steel beam 1 are sequentially connected from bottom to top through the installation bolt 4. Four steel beam limiting plates 1-1 are fixedly arranged on the lower end face of the end portion of the steel beam 1, and an internal space surrounded by the four steel beam limiting plates 1-1 is a rectangular installation area of the sliding support 2. A support limiting plate 2-1 is fixedly arranged on the upper end surface of the bearing surface 3-1; the support limiting plate 2-1 is arranged on one side far away from the side connected with the column 5 and is parallel to the column 5. The lower end face of the steel beam limiting plate 1-1 is lower than the upper end face of the support limiting plate 2-1. The height of the bracket 3 is equal to that of the steel beam 1 (i.e. h)General assembly=hCattle=hBeam) And the upper end face of the bracket 3 is not higher than the upper end face of the steel beam 1 after installation, and the lower end face of the bracket 3 is not lower than the lower end face of the steel beam 1. Therefore, after the weak connection structure is installed, the longitudinal movement limit interval of the sliding support 2 is the distance between the pillar 5 and the support limit plate 2-1, and the transverse movement limit interval is the distance between the two side plates 3-2 of the bracket 3.
The lower end face of the bearing face 3-1 is fixedly provided with a plurality of vertical reinforcing ribs 3-3 for ensuring the local bending resistance and the local compression resistance of the bearing face of the steel corbel.
As shown in the attached figures 7 and 8, flange plates 3-4 vertical to the side plates 3-2 are symmetrically and fixedly arranged on the outer sides of the upper end parts of the two side plates 3-2; and a horizontal reinforcing rib 3-5 vertical to the side plate 3-2 is symmetrically and fixedly arranged on the outer side of the middle part of the two side plates 3-2. The flange plates 3-4 and the horizontal reinforcing ribs 3-5 are designed to ensure the local bending resistance and the pressure resistance of the bracket side plate, wherein the number of the horizontal reinforcing ribs 3-5 is increased or decreased according to actual requirements.
To further explain the above technical solution, the mounting manner of the mounting bolt 4 is that a fixed nut is at the upper end, and a spring and a movable nut are at the lower end. Such mounting means, the maintenance is observed in the later stage of being convenient for, and effectively prevents that the bolt from dropping, unless the bolt of following up installation is artificially pulled out, otherwise can not drop.
Example two:
as shown in the accompanying figures 9-10, in the embedded weak connection structure, the height of the bracket 3 is less than that of the steel beam 1 (i.e. h)Cattle＜hBeam＝hGeneral assembly) And the up end of bracket 3 is less than the up end of girder steel 1 after the installation, and the lower terminal surface of bracket 3 is in the lower terminal surface parallel and level of girder steel 1. The rest is the same as the first embodiment.
Of course, the present invention is not limited to the above two embodiments, for example: the height of the bracket 3 is less than that of the steel beam 1 (namely h)Cattle＜hBeam＝hGeneral assembly) The upper end surface of the bracket 3 is lower than the upper end surface of the steel beam 1 after installation, and the lower end surface of the bracket 3 is higher than the lower end surface of the steel beam 1, the structure is not shown in the schematic diagram, and compared with the embodiment, the height of the bracket 3 on the lower side of the bearing surface 3-1 is reduced.
In summary, the height of the bracket 3 is less than or equal to the height of the steel beam 1 (i.e. h)Cattle≤hBeam) The specific height of the bracket 3 is calculated and determined according to the actual building height, the building shape, the length of the corridor and the bending resistance and the shearing resistance of the bracket, so that the condition that the internal force of the laying end of the corridor is effectively transmitted to the frame column is ensured to be met, and a finite element method can be adopted under necessary conditionsThe bracket is subjected to more refined analysis, weak points are found out, and pertinence is strengthened.
The utility model discloses an embedded weak link construction compares with commonly used among the prior art, through accepting the face with the steel corbel and move down, realizes on the high relation of layer, the girder steel tip, and sliding support all hides at the corbel height, for the bending resistance that satisfies the corbel, and the ability of shearing has set up the corbel both sides board of conventional height, but these two blocks of curb plates coincide basically with girder steel tip, sliding support on the high relation. If the column is a steel column, the steel bracket is connected to the steel column in a manner of prewelding in a factory. If the column is a concrete column, under the condition of large load, the steel corbel can be connected to a section of profile steel pre-embedded in the column in a factory pre-welding mode; under the condition of small load, the steel bracket can be directly connected with the column in an embedded part mode. In order to prevent the steel beam from falling off under medium and large earthquakes, the large-earthquake elastic-plastic displacement checking calculation of the main structures at the two ends needs to be carried out, and the maximum elastic-plastic displacement of the main structures at the two ends at the position of the steel beam is superposed to be used as the maximum displacement of the sliding support. And install stop device on girder steel and bracket respectively, under the big effect of shaking of well, at first the support that slides has certain deformation power consumption ability, if the support that slides destroys, then blocks the girder steel through the curb plate of bracket and support limiting plate and drops, forms the two lines of defence that prevent to drop.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical concepts of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an embedded weak link structure, includes girder steel (1), sliding support (2), bracket (3) and construction bolt (4), the tip of girder steel (1) is passed through sliding support (2) and construction bolt (4) and is connected with bracket (3), bracket (3) and post (5) fixed connection, its characterized in that: the main structure section of the bracket (3) is H-shaped, the horizontal structure is a bearing surface (3-1), the vertical structures at two sides are side plates (3-2), and the upper side is a semi-closed hollow cavity with an opening at the upper end; the steel beam (1) is a height-variable component with thin end part and thick middle part; the end part of the steel beam (1) is embedded and connected in the semi-closed hollow cavity of the bracket (3); the height that highly is less than or equal to girder steel (1) of bracket (3), and the up end of installation back bracket (3) is not higher than the up end of girder steel (1), and the lower terminal surface of bracket (3) is not less than the lower terminal surface of girder steel (1).
2. The embedded weak connection structure of claim 1, wherein: and the bearing surface (3-1) used for supporting the end part of the steel beam (1) on the bracket (3) is arranged at the middle-lower position of the bracket (3) in the vertical direction.
3. The embedded weak connection structure of claim 1, wherein: the sliding support (2) is arranged in the middle of the upper end of the bearing surface (3-1), and the bearing surface (3-1), the sliding support (2) and the steel beam (1) are sequentially connected from bottom to top through mounting bolts (4).
4. The embedded weak connection structure of claim 3, wherein: the lower end face of the end part of the steel beam (1) is fixedly provided with four steel beam limiting plates (1-1), and an internal space surrounded by the four steel beam limiting plates (1-1) is a rectangular installation area of the sliding support (2).
5. The embedded weak connection structure of claim 4, wherein: a support limiting plate (2-1) is fixedly arranged on the upper end surface of the bearing surface (3-1); the support limiting plate (2-1) is arranged on one side far away from the side connected with the column (5) and is parallel to the column (5).
6. The embedded weak connection structure of claim 5, wherein: the lower end face of the steel beam limiting plate (1-1) is lower than the upper end face of the support limiting plate (2-1).
7. The embedded weak connection structure of any one of claims 1 to 6, wherein: the lower end surface of the bearing surface (3-1) is fixedly provided with a plurality of vertical reinforcing ribs (3-3).
8. The embedded weak connection structure of claim 1, wherein: the outer sides of the upper end parts of the two side plates (3-2) are symmetrically and fixedly provided with flange plates (3-4) vertical to the side plates (3-2).
9. The embedded weak connection structure of claim 7, wherein: one or more horizontal reinforcing ribs (3-5) vertical to the side plates (3-2) are symmetrically and fixedly arranged on the outer sides of the middle parts of the two side plates (3-2).
10. The embedded weak connection structure of claim 1, wherein: the mounting mode of the mounting bolt (4) is that a fixed nut is arranged at the upper end, and a movable nut and a fixing device are arranged at the lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962035.1U CN210684975U (en) | 2019-06-25 | 2019-06-25 | Embedded weak connection structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962035.1U CN210684975U (en) | 2019-06-25 | 2019-06-25 | Embedded weak connection structure |
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| CN210684975U true CN210684975U (en) | 2020-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284593A (en) * | 2019-06-25 | 2019-09-27 | 启迪设计集团股份有限公司 | A kind of embedded Weak link construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284593A (en) * | 2019-06-25 | 2019-09-27 | 启迪设计集团股份有限公司 | A kind of embedded Weak link construction |
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