CN112610019A - Local grouting reinforcement T-shaped node of base plate - Google Patents
Local grouting reinforcement T-shaped node of base plate Download PDFInfo
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- CN112610019A CN112610019A CN202011556565.XA CN202011556565A CN112610019A CN 112610019 A CN112610019 A CN 112610019A CN 202011556565 A CN202011556565 A CN 202011556565A CN 112610019 A CN112610019 A CN 112610019A
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- branch pipe
- pipe
- grouting
- backing plate
- main pipe
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- 230000002787 reinforcement Effects 0.000 title claims description 8
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000004575 stone Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 239000011440 grout Substances 0.000 description 12
- 238000003466 welding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
本发明涉及建筑构件技术领域，尤其涉及一种垫板局部灌浆加固T型节点。其包括非平行连接的主管和支管，所述主管与所述支管端部的连接处设有垫板，以所述垫板为界、所述主管包括第一分管和第二分管，所述第一分管、第二分管以及所述支管内均设有封口板，三所述封口板之间形成灌浆腔；所述主管或/和所述支管设有向所述灌浆腔内灌入混凝土的灌浆孔；所述灌浆腔中填充有经所述灌浆孔灌入的混凝土。本发明通过在节点处使用加垫板增加节点承载力，增加节点的延性，通过灌浆孔对主管进行局部灌浆，在保持自重的前提下，增加了节点的承载能力，工作稳定性高，使用寿命长，实用性强，使用效果好，便于推广使用。
The invention relates to the technical field of building components, in particular to a T-joint strengthened by partial grouting of a backing plate. It includes a main pipe and a branch pipe that are not connected in parallel, and a backing plate is provided at the connection between the main pipe and the end of the branch pipe. With the backing plate as a boundary, the main pipe includes a first branch pipe and a second branch pipe. The first branch pipe, the second branch pipe and the branch pipe are all provided with sealing plates, and a grouting cavity is formed between the three sealing plates; the main pipe or/and the branch pipes are provided with grouting for pouring concrete into the grouting cavity The grouting cavity is filled with the concrete poured through the grouting hole. The invention increases the bearing capacity of the node and increases the ductility of the node by using the backing plate at the node, locally grouting the main pipe through the grouting hole, and increases the bearing capacity of the node on the premise of maintaining its own weight, with high working stability and service life. Long, practical, good use effect, easy to promote and use.
Description
Technical Field
The invention relates to the technical field of building components, in particular to a T-shaped node reinforced by a backing plate through local grouting.
Background
The pipe structure is in a node form formed by welding a branch pipe with a smaller pipe diameter and a main pipe with a larger pipe diameter. The steel pipe (pipe truss) structure has the advantages of beautiful appearance, good overall performance, light dead weight, strong torsional rigidity, good fireproof performance, convenient manufacture and construction, full play of the strength of the material, excellent economy and the like, and is widely applied to common building structures such as modern industrial factory buildings, warehouses, gymnasiums, towers, bridges, exhibition halls, meeting places, ocean working platforms, airport terminals, stations, office buildings and the like.
In the prior engineering, the intersection of rectangular steel pipes is mainly connected by intersecting joints, namely a main pipe and a branch pipe are connected by adopting a direct welding mode. The direct welding joint formed by the steel pipe components has the advantages of simple form, no need of connecting pieces, clear force transmission path, large joint bearing capacity, time saving, material saving and the like. However, with the development of building economy, the application range of the steel pipe structure is further expanded, and the structure tends to be large-span, complex and heavy-load. The number of the rod pieces at the intersecting node is large, stress concentration is obvious, and the node is often a weak part of the structure under the action of multidirectional stress. In order to meet the use requirement of the structure, the intersecting joint of the steel pipes is often required to be reinforced. The reinforcing method of intersecting joint mainly includes pouring concrete into main pipe, increasing the wall thickness of main pipe, adding sleeve pipe on main pipe, adding backing plate in main pipe, setting internal and external stiffening rib ring on main pipe and adding joint plate. For example, a building member disclosed in patent document CN205012475U, a T-shaped circular steel tube intersecting node of a building tile-shaped reinforcing plate, which is characterized in that the node is composed of a main tube, branch tubes and a reinforcing base plate; a tile-shaped plate, namely a reinforcing plate, is additionally arranged between a main pipe and a branch pipe of an intersecting joint of the T-shaped circular steel pipe, the periphery of the tile-shaped reinforcing plate is welded with the main pipe through fillet welds, and the branch pipe is welded with a reinforcing base plate through fillet welds after being processed through an intersecting line. For another example, such a steel pipe node that patent document with publication number CN203729445U discloses is used for the connection between steel pipes in a power transmission line steel pipe tower, and includes a main pipe and a branch pipe, and the axis of the branch pipe intersects with the axis of the main pipe. The problem that the bearing capacity of a steel pipe joint is insufficient still exists in a pipe structure in the prior art.
Disclosure of Invention
The invention aims to solve the problems and provides a cushion plate local grouting reinforced T-shaped node which can improve the ultimate bearing capacity of the node, prolong the service life of the node and improve the overall stability of the structure.
The invention provides a technical scheme for solving the problem, which provides a T-shaped node reinforced by local grouting of a base plate, comprising a main pipe and a branch pipe which are connected in a non-parallel way, wherein the base plate is arranged at the joint of the main pipe and the end part of the branch pipe, and the T-shaped node reinforced by local grouting of the base plate is characterized in that: the main pipe comprises a first branch pipe and a second branch pipe by taking the base plate as a boundary, sealing plates are arranged in the first branch pipe, the second branch pipe and the branch pipes, and a grouting cavity is formed between the three sealing plates; the main pipe or/and the branch pipe are/is provided with a grouting hole for grouting concrete into the grouting cavity; and concrete filled in the grouting cavity through the grouting hole is filled in the grouting cavity.
This application is through being responsible for, the local grout of branch pipe at the node, not only can avoid being responsible for because of whole grout dead weight increases, and will be responsible for through the micro-expansion effect of concrete and seal the regional fill-up between the board at two, be responsible for the node and provide the side direction restraint for the inner wall, has restricted effectively and is responsible for the local bucking at the node, has increased the bearing capacity of node, has reduced engineering cost and has shortened the time limit for a project.
Preferably, the sealing plate is provided with an air vent.
Preferably, the present invention further comprises a liner tube, one end of the liner tube is inserted into the main tube or the branch tube in parallel, and the other end protrudes from the port of the main tube or the branch tube.
This application not only can make the extension of being responsible for through the bushing pipe, can make the inside grout district of being responsible for and be responsible for moreover and be responsible for and form the transition district between the not grout district of pipe orifice department, increase the bearing capacity of being responsible for pipe orifice department, alleviated the rigidity sudden change problem and the stress concentration problem of being responsible for greatly.
Preferably, the end of the liner pipe inserted into the main pipe or the branch pipe is provided with the sealing plate.
Preferably, an outer wall of a portion of the liner pipe inserted into the main pipe or branch pipe abuts against an inner wall of the main pipe or branch pipe.
Preferably, the liner pipe is connected to the end of the main pipe or the branch pipe by spot welding.
Preferably, the concrete is C30 strength micro-expanded fine-stone concrete.
Preferably, the grouting holes are respectively formed in the parts of the first branch pipe and the second branch pipe close to the base plate.
Preferably, the portion of the branch pipe close to the base plate is provided with the grouting hole.
Preferably, the aperture of the grouting hole is 30-90mm, and the aperture of the exhaust hole is 10-30 mm.
Preferably, the distance between the sealing plate in the first branch pipe and the branch pipe is 200mm-500 mm.
The invention has the beneficial effects that:
1. the application has the advantages of attractive structural configuration, reasonable design, convenience in construction and convenience in implementation.
2. This application strengthens the node tensile and the bending resistance bearing capacity between person in charge and the branch pipe through the backing plate, improves the ductility of structure, and the reinforcement effect is obvious and construction convenience.
3. This application is to being responsible for, the local grout of branch pipe at the node through little bloated concrete, not only can avoid being responsible for because of whole grout dead weight increases, and the little expansion effect through the concrete will be responsible for and seal the regional fill up between the board at two, be responsible for the node and provide the side direction restraint for the node inner wall, has restricted the local bucking of being responsible for at the node effectively, has increased the bearing capacity of node, has reduced engineering cost and has shortened the time limit for a project.
4. This application not only can make the extension of being responsible for through the bushing pipe, can make the inside grout district of being responsible for and be responsible for moreover and be responsible for and form the transition district between the not grout district of pipe orifice department, increase the bearing capacity of being responsible for pipe orifice department, alleviated the rigidity sudden change problem and the stress concentration problem of being responsible for greatly.
5. This application is through the grout hole on being responsible for and the exhaust hole of sealing the board, and it is convenient to make the inside grout of being responsible for, and construction quality is high.
6. This application biography power is direct, clear and definite, and the practicality is strong, excellent in use effect, convenient to popularize and use.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.
FIG. 1 is a schematic structural diagram of a T-shaped node reinforced by local grouting of a base plate;
FIG. 2 is an exploded view of a T-shaped joint reinforced by local grouting of a backing plate;
FIG. 3 is an elevation view of a tie plate partially grouted to reinforce a T-node;
in the figure: the main pipe 1, the branch pipe 2, the liner pipe 3, the backing plate 4, the grouting hole 5, the sealing plate 6 and the exhaust hole 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
A T-shaped joint for reinforcing a base plate through local grouting is shown in figures 1, 2 and 3 and comprises a main pipe 1 and a branch pipe 2 which are connected in a non-parallel mode, wherein the main pipe 1 and the branch pipe 2 are both round steel pipes. One end of the branch pipe 2 is connected to the main pipe 1 in a butt welding mode, the other end of the branch pipe is a free end, and the central axis of the main pipe 1 and the central axis of the branch pipe 2 are in the same plane. In practical application, the main pipe 1 and the branch pipe 2 can form any included angle, and in the embodiment, the main pipe 1 and the branch pipe are vertically connected and form a 90-degree included angle.
In this application, be responsible for 1 and the junction of branch pipe 2 tip is equipped with backing plate 4, as shown in fig. 2, backing plate 4 is the arc that matches with the cambered surface of being responsible for 1, and backing plate 4 laminates completely with the surface of being responsible for 1. The base plate 4 and the main pipe 1, and the base plate 4 and the branch pipe 2 are connected through fillet welds. A base plate 4 is additionally arranged between a main pipe 1 and a branch pipe 2 of the intersecting joint of the common T-shaped circular steel pipe, so that the wall thickness of the main pipe 1 at the connecting part can be increased, and the local deformation of the main pipe 1 is reduced; on the other hand, the load transmission path is changed from the branch pipe 2-the main pipe 1 to the branch pipe 2-the base plate 4-the main pipe 1, the stress performance of the main pipe 1 is improved, and the stress performance of the node is improved.
In this application, use backing plate 4 as the border, be responsible for 1 and include that first minute pipe and second are in charge of, backing plate 4 sets up in the central point who is responsible for 1 and puts for first minute pipe and second are in charge of and are used branch pipe 2 as axle, symmetry setting. Sealing plates 6 are arranged in the first branch pipe, the second branch pipe and the branch pipe 2, and a T-shaped grouting cavity is formed among the three sealing plates 6. Wherein, the sealing plates 6 in the first branch pipe and the second branch pipe are symmetrically arranged by taking the branch pipe 2 as an axis, and the distances from the two sealing plates 6 to the branch pipe 2 are both 200 and 500 mm.
The main pipe 1 or/and the branch pipe 2 is/are provided with a grouting hole 5 for pouring concrete into the grouting cavity, the aperture of the grouting hole is 30-90mm, and in the embodiment, the aperture of the grouting hole 5 is 60 mm. The concrete used is preferably micro-expansion fine stone concrete with the strength of C30, and the grouting cavity is filled by the micro-expansion of the concrete. In order to ensure smooth grouting, the sealing plate 6 is provided with an exhaust hole 7, the exhaust hole 7 is arranged at the central position of the sealing plate 6, the aperture of the exhaust hole 7 is 10-30mm, and in the embodiment, the aperture of the exhaust hole 7 is 20 mm.
In this embodiment, as shown in fig. 2, the backing plate 4 is a whole plate, so that the grouting cavities are not communicated, and therefore, grouting holes 5 are respectively formed in the parts of the first branch pipe and the second branch pipe close to the backing plate 4. The part of the branch pipe 2 close to the backing plate 4 is provided with a grouting hole 7.
In addition, a liner tube 3 is further included, and in this embodiment, three liner tubes 3, which are all round steel tubes, are respectively a first liner tube and a second liner tube parallel to the main tube 1, and a third liner tube parallel to the branch tube 2. One end of the first liner pipe is provided with the sealing plate 6 and is inserted into the first branch pipe in parallel, the other end of the first liner pipe protrudes out of the opening of the first branch pipe, the outer wall of the part of the first liner pipe inserted into the first branch pipe is tightly abutted against the inner wall of the first branch pipe, and meanwhile, the end part of the first branch pipe is connected with the first liner pipe in a spot welding manner. Similarly, one end of the second liner tube is also provided with the sealing plate 6 and is inserted into the second branch tube in parallel, the other end of the second liner tube protrudes out of the tube opening of the second branch tube, the outer wall of the part of the second liner tube inserted into the second branch tube is also tightly abutted against the inner wall of the second branch tube, and meanwhile, the end part of the second branch tube is connected with the second liner tube in a spot welding manner. The first and second liners are all the same in size, shape and length, and the lengths of the first and second liners inserted into the main pipe 1 are the same. Similarly, one end of the third liner pipe is provided with the sealing plate 6 and is inserted into the branch pipe 2 in parallel, the other end of the third liner pipe protrudes out of the port of the branch pipe 2, the outer wall of the part in the branch pipe 2 of the third liner pipe is tightly abutted against the inner wall of the branch pipe 2, and meanwhile, the branch pipe 2 is connected with the third liner pipe through spot welding. The liner pipe enables the main pipe 1 and the branch pipe 2 to extend the length of the main pipe and the branch pipe 2, and the main pipe 1 and the branch pipe 2 are convenient to connect.
This application increases the node bearing capacity through using backing plate 4 at the node of being responsible for 1 and branch pipe 2, increases the ductility of node, carries out local grout through grout hole 5 and exhaust hole 7 to being responsible for 1 to alleviate the rigidity sudden change problem and the stress concentration problem of being responsible for 1 in mouth of pipe department through bushing pipe 3, limited the local buckling of being responsible for 1 at the node effectively, make the weak position of its node strengthened.
The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.
It should be noted that, in the description of the present application, it should be noted that the terms "upper end", "lower end" and "bottom end" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the application is usually placed in when the product of the application is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556565.XA CN112610019A (en) | 2020-12-25 | 2020-12-25 | Local grouting reinforcement T-shaped node of base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556565.XA CN112610019A (en) | 2020-12-25 | 2020-12-25 | Local grouting reinforcement T-shaped node of base plate |
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| Publication Number | Publication Date |
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| CN112610019A true CN112610019A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011556565.XA Pending CN112610019A (en) | 2020-12-25 | 2020-12-25 | Local grouting reinforcement T-shaped node of base plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898069A (en) * | 2022-11-18 | 2023-04-04 | 同济大学 | The Method of Local Reinforcement of Steel Tube Joints Using Inflatable Air Bags to Limit Post-cast Concrete |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001262706A (en) * | 2000-03-23 | 2001-09-26 | Nippon Steel Corp | Beam-column joint structure |
| JP2002088909A (en) * | 2000-09-13 | 2002-03-27 | Nippon Steel Corp | Joint structure between steel column and reinforced concrete beam |
| CN203701297U (en) * | 2014-02-08 | 2014-07-09 | 长安大学 | KT-shaped space buckling-resisting tubular joint of rectangular steel tube structure |
| CN203701298U (en) * | 2014-02-08 | 2014-07-09 | 长安大学 | T-shaped plane buckling-resisting tubular joint of rectangular steel tube structure |
| CN203701296U (en) * | 2014-02-08 | 2014-07-09 | 长安大学 | Y-shaped plane anti-buckling tubular joint of rectangular steel pipe structure |
| CN203977583U (en) * | 2014-05-30 | 2014-12-03 | 江苏建筑职业技术学院 | Regional perfusion's cement slurry Enhanced intersecting joint |
-
2020
- 2020-12-25 CN CN202011556565.XA patent/CN112610019A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001262706A (en) * | 2000-03-23 | 2001-09-26 | Nippon Steel Corp | Beam-column joint structure |
| JP2002088909A (en) * | 2000-09-13 | 2002-03-27 | Nippon Steel Corp | Joint structure between steel column and reinforced concrete beam |
| CN203701297U (en) * | 2014-02-08 | 2014-07-09 | 长安大学 | KT-shaped space buckling-resisting tubular joint of rectangular steel tube structure |
| CN203701298U (en) * | 2014-02-08 | 2014-07-09 | 长安大学 | T-shaped plane buckling-resisting tubular joint of rectangular steel tube structure |
| CN203701296U (en) * | 2014-02-08 | 2014-07-09 | 长安大学 | Y-shaped plane anti-buckling tubular joint of rectangular steel pipe structure |
| CN203977583U (en) * | 2014-05-30 | 2014-12-03 | 江苏建筑职业技术学院 | Regional perfusion's cement slurry Enhanced intersecting joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898069A (en) * | 2022-11-18 | 2023-04-04 | 同济大学 | The Method of Local Reinforcement of Steel Tube Joints Using Inflatable Air Bags to Limit Post-cast Concrete |
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