CN111910948A - Shear-resistant reinforcing structure and mounting method thereof - Google Patents
Shear-resistant reinforcing structure and mounting method thereof Download PDFInfo
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- CN111910948A CN111910948A CN202010847135.7A CN202010847135A CN111910948A CN 111910948 A CN111910948 A CN 111910948A CN 202010847135 A CN202010847135 A CN 202010847135A CN 111910948 A CN111910948 A CN 111910948A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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Abstract
The invention relates to a shear-resistant reinforcing structure and an installation method thereof, wherein the shear-resistant reinforcing structure comprises anchor plates (5) symmetrically installed on a main body structure, the anchor plates (5) are mutually connected through a diagonal connection mechanism, the diagonal connection mechanism comprises four connecting rods (2) in cross connection, one ends of the connecting rods (2) are connected to the anchor plates (5), the other ends of the connecting rods (2) are connected to a cross center steel plate (1), and the connecting rods (2) and the cross center steel plate (1) are mutually connected through a bidirectional reverse-thread sleeve (3). Compared with the prior art, the invention adopts the bidirectional reverse-thread sleeve to connect the connecting rod with the cross center steel plate, can automatically adjust the applied prestress by constructing the diagonal connecting mechanism, realizes the purpose of coordinating with the original structure to bear force, and has the advantages of low cost and high construction efficiency.
Description
Technical Field
The invention relates to the technical field of civil engineering reinforcement, in particular to a shear-resistant reinforced structure and an installation method thereof.
Background
Along with the emergence of a large number of novel buildings, some damages or deformations affecting normal use and durability can occur in the use process of part of original buildings due to long-term influence of the environment, design and construction errors, use function adjustment, natural disaster action and the like. Particularly, for a large number of existing buildings with post-transformation functions, the problem that the shear-resistant stirrups of the original beam sections are not sufficiently configured is particularly prominent, and the shear-resistant structure is reinforced to be an unavoidable practical problem because the shear-resistant damage is brittle and is difficult to repair after being damaged.
Experts and scholars at home and abroad make a great deal of research for the purpose, and aiming at the defects of the shear-resistant stirrups, the following reinforcement methods are generally adopted: the method comprises a section enlarging method, a steel sticking reinforcing method, a support reinforcing method, a carbon fiber reinforcing method and the like. At present, the several reinforcement methods aiming at the insufficient shear hoop reinforcement all have some defects: the structure size is increased, the cost is higher, the use space is reduced, and the field pollution is larger due to wet operation; the self weight is increased, and the appearance is damaged; the device can not work in coordination with the original structure; the bonding structure adhesive has weak high temperature resistance and corrosion resistance; the durability is poor; large construction difficulty, long period and the like.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a shear-resistant reinforcing structure and an installation method thereof, which can achieve the purposes of coordinating with the original structure, improving the construction efficiency and reducing the cost.
The purpose of the invention can be realized by the following technical scheme: the utility model provides a reinforced structure shears, includes that the symmetry installs the anchor slab on the major structure, through diagonal connection mechanism interconnect between the anchor slab, diagonal connection mechanism is including four connecting rods that are cross-shaped connection, the one end of connecting rod is connected to the anchor slab, the other end of connecting rod is connected to crossing central steel sheet, through two-way contrary silk sleeve interconnect between connecting rod and the crossing central steel sheet.
Furthermore, U-shaped plug-in components are respectively installed at four vertex angles of the crossed central steel plate, one end of each U-shaped plug-in component is installed at the vertex angle of the crossed central steel plate, and the other end of each U-shaped plug-in component is connected with the bidirectional reverse-thread sleeve.
Furthermore, one end of the U-shaped plug-in unit is installed at the top corner of the crossed central steel plate through a first shear pin shaft.
Furthermore, one end of the connecting rod is fixedly connected with a positioning steel plate, and the positioning steel plate is installed on the anchor plate.
Further, the positioning steel plate is welded at one end of the connecting rod.
Furthermore, the positioning steel plate is installed on the anchor plate through a second shear pin shaft.
Furthermore, the positioning steel plate is of a flat head structure.
Further, the anchor plate is installed on the main structure through the back-implanted anchor bolt.
Further, the back-implanted anchor bolt is welded at the bottom of the anchor plate.
A method of installing a shear reinforcement structure comprising the steps of:
s1, fixedly mounting the two anchor plates on the main body structure symmetrically;
s2, connecting one end of each of two connecting rods with two anchor plates respectively along a diagonal direction, connecting the other end of each of the two connecting rods with a bidirectional inverse screw sleeve respectively, and connecting U-shaped plug-in units, which are used for installing the crossed central steel plates at the vertex angles of two ends of the same diagonal, with the bidirectional inverse screw sleeves respectively;
s3, along the other diagonal direction, one ends of two connecting rods are respectively connected with two anchor plates, the other ends of the two connecting rods are respectively connected with a bidirectional inverse screw sleeve, and U-shaped plug-in units, which are used for installing the crossed central steel plates at the vertex angles of the two ends of the same diagonal, are respectively connected with the bidirectional inverse screw sleeve;
and S4, rotating the bidirectional reverse-thread sleeve by adopting a torsion device to adjust the axial prestress applied by the bidirectional reverse-thread sleeve, and finishing the fastening connection of the connecting rod and the crossed central steel plate.
Compared with the prior art, the invention has the following advantages:
the invention adopts the design of a diagonal connection mechanism, utilizes a bidirectional reverse wire sleeve to connect a connecting rod with a cross center steel plate, and can automatically adjust the magnitude of the applied axial prestress in a bidirectional reverse wire rotating and screwing mode, thereby applying different magnitudes of prestress according to the shearing resistance requirements of different components to adjust the rigidity of an external structure and realizing the effect of coordinating with the original structure to bear force.
The connecting rod and the cross center steel plate are connected with each other through the bidirectional reverse-thread sleeve, the connecting rod and the anchor plate are connected with each other through the positioning steel plate, all structural components can adopt a whole-factory prefabricated steel structure, modularization and standardization of all structural components are realized, production time can be effectively saved, production cost can be reduced, component quality can be controlled, meanwhile, direct and rapid installation can be realized on site, and construction efficiency is improved.
Drawings
FIG. 1 is a schematic view illustrating an installation effect of a shear reinforcement structure according to the present invention;
FIG. 2 is an exploded view of a cross center steel plate;
FIG. 3 is an exploded view of the connecting rod;
FIG. 4 is a schematic structural view of an anchor plate;
the notation in the figure is: 1. a cross center steel plate; 2. a connecting rod; 3. a bidirectional reverse-thread sleeve; 4. positioning a steel plate; 5. anchor plate, 6, first shear pin axle, 7, second shear pin axle, 8, U-shaped plug-in components, 9, back-implanted crab-bolt.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in figure 1, the shear-resistant reinforcing structure comprises anchor plates 5 symmetrically arranged on a main structure, wherein the anchor plates 5 are mutually connected through a diagonal connection mechanism, the diagonal connection mechanism comprises four connecting rods 2 in a cross connection, one end of each connecting rod 2 is connected to the anchor plate 5, the other end of each connecting rod 2 is connected to a cross center steel plate 1, the connecting rods 2 and the cross center steel plates 1 are mutually connected through bidirectional reversed wire sleeves 3, and the bidirectional reversed wire sleeves 3 are screwed through rotation to provide axial prestress with adjustable size.
As shown in fig. 2, U-shaped inserts 8 are respectively installed at four vertex angles of the cross center steel plate 1, one end of each U-shaped insert 8 is installed at a vertex angle of the cross center steel plate 1 through a first shear pin 6, and the other end of each U-shaped insert 8 is connected with the bidirectional reverse-threaded sleeve 3.
As shown in fig. 3, one end of the connecting rod 2 is fixedly connected with a positioning steel plate 4, the positioning steel plate 4 is installed on the anchor plate 5 through a second shear pin 7, wherein the positioning steel plate 4 is welded at one end of the connecting rod 2, and the positioning steel plate is of a flat head structure.
As shown in fig. 4, the anchor plate 5 is mounted to the main structure by means of the anchor bolts 9, and a plurality of anchor bolts 9 are welded to the bottom of the anchor plate 5.
In the embodiment, the structural parts are made of metal, so that the durability is strong, and each structural part has the characteristics of modularization and standardization, so that the production cost is reduced, the production efficiency is improved, and the quality control is facilitated. In the maintenance of later stage, can change a certain structural component at any time, perhaps adjust the prestressing force size according to actual demand to this external reinforced structure that shears has prolonged the life greatly.
The shear-resistant reinforcing structure is applied to practice, when the shear-resistant reinforcing structure is installed, firstly, an anchor plate 5 connected with a main structure is laid out and constructed, then a connecting rod 2 and a cross center steel plate 1 on the same straight line are constructed along opposite angles, wherein a positioning steel plate 4 at one end of the connecting rod 2 is installed on the anchor plate 5 through a second shear-resistant pin shaft 7, one end of the connecting rod 2 and a U-shaped plug-in 8 at the vertex angle position of the cross center steel plate 1 are respectively connected to two ends of the same bidirectional inverse screw sleeve 3, then, the other opposite angle is constructed, finally, four bidirectional inverse screw sleeves 3 are rotated by using torque equipment, and the axial prestress value required in practice is adjusted.
When the building is normally used, the extra rigidity of the reinforced concrete beam can be improved by the extra tensile force rigidity generated by diagonal tension of the prestress, and meanwhile, the diagonal prestress plays a role in improving the shearing resistance during shearing deformation; in addition, under the working condition of small earthquake, the prestressed diagonal tension rod can restore the small deformation of the structure through pretension force, and the performance of the self-restoring performance of the structure is achieved. In practical application, the cross center steel plate 1 can adopt the energy dissipation damping structure connecting plate, so that the cross center steel plate is suitable for shearing resistance and reinforcement of energy dissipation structural members (such as connecting beams), which also shows that the structure has the advantage of expandable function.
Claims (10)
1. The utility model provides a shear reinforcement structure, its characterized in that, including anchor slab (5) of symmetry installation on the major structure, interconnect through diagonal connection mechanism between anchor slab (5), diagonal connection mechanism is including four connecting rods (2) that are cross-shaped connection, the one end of connecting rod (2) is connected to anchor slab (5), the other end of connecting rod (2) is connected to crossing central steel sheet (1), through two-way contrary silk sleeve (3) interconnect between connecting rod (2) and crossing central steel sheet (1).
2. A shear reinforcement structure according to claim 1, wherein the four vertex angles of the cross central steel plate (1) are respectively provided with a U-shaped plug-in unit (8), one end of the U-shaped plug-in unit (8) is arranged at the vertex angle of the cross central steel plate (1), and the other end of the U-shaped plug-in unit (8) is connected with the bidirectional contra-filament sleeve (3).
3. A shear reinforcement structure according to claim 2, wherein one end of the U-shaped insert (8) is mounted at the top corner of the intersecting central steel plates (1) by means of a first shear pin shaft (6).
4. A shear reinforcement structure according to claim 1, wherein a positioning steel plate (4) is fixedly connected to one end of the connecting rod (2), and the positioning steel plate (4) is mounted on the anchor plate (5).
5. A shear reinforcement structure according to claim 4, wherein the locating steel plate (4) is welded to one end of the tie rod (2).
6. A shear reinforcement structure according to claim 4, wherein the positioning steel plates (4) are mounted to the anchor plate (5) by means of second shear pins (7).
7. A shear reinforcement structure according to claim 4, wherein the positioning steel plates (4) are of a flat-headed configuration.
8. A shear reinforcement structure according to claim 1, wherein the anchor plate (5) is mounted to the host structure by posterior implantable anchors (9).
9. A shear reinforcement structure according to claim 8, wherein the anchor bolts (9) are welded to the bottom of the anchor plate (5).
10. A method for installing the shear reinforcement structure of claim 2, comprising the steps of:
s1, the two anchor plates (5) are symmetrically and fixedly arranged on the main body structure;
s2, connecting one ends of two connecting rods (2) with two anchor plates (5) respectively along a diagonal direction, connecting the other ends of the two connecting rods (2) with a bidirectional reverse-thread sleeve (3) respectively, and connecting a U-shaped plug-in (8) which is used for installing a cross center steel plate (1) at the vertex angles of two ends of the same diagonal with the bidirectional reverse-thread sleeve (3) respectively;
s3, along the other diagonal direction, one ends of two connecting rods (2) are respectively connected with two anchor plates (5), the other ends of the two connecting rods (2) are respectively connected with a bidirectional reverse-thread sleeve (3), and U-shaped inserts (8) which are used for installing the crossed central steel plate (1) at the vertex angles of the two ends of the same diagonal are respectively connected with the bidirectional reverse-thread sleeve (3);
s4, rotating the bidirectional reverse-thread sleeve (3) by adopting a torsion device to adjust the axial prestress applied by the bidirectional reverse-thread sleeve (3) to finish the fastening connection of the connecting rod (2) and the crossed central steel plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847135.7A CN111910948A (en) | 2020-08-21 | 2020-08-21 | Shear-resistant reinforcing structure and mounting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847135.7A CN111910948A (en) | 2020-08-21 | 2020-08-21 | Shear-resistant reinforcing structure and mounting method thereof |
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| Publication Number | Publication Date |
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| CN111910948A true CN111910948A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010847135.7A Pending CN111910948A (en) | 2020-08-21 | 2020-08-21 | Shear-resistant reinforcing structure and mounting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370011A (en) * | 2022-01-28 | 2022-04-19 | 中交第一公路勘察设计研究院有限公司 | Bridge external-twisting type prestress reciprocating reinforcing device and reinforcing method |
-
2020
- 2020-08-21 CN CN202010847135.7A patent/CN111910948A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370011A (en) * | 2022-01-28 | 2022-04-19 | 中交第一公路勘察设计研究院有限公司 | Bridge external-twisting type prestress reciprocating reinforcing device and reinforcing method |
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