CN220267288U - Reinforcing structure applied to existing beam of metro vehicle section - Google Patents
Reinforcing structure applied to existing beam of metro vehicle section Download PDFInfo
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- CN220267288U CN220267288U CN202321438662.8U CN202321438662U CN220267288U CN 220267288 U CN220267288 U CN 220267288U CN 202321438662 U CN202321438662 U CN 202321438662U CN 220267288 U CN220267288 U CN 220267288U
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 66
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 239000004567 concrete Substances 0.000 claims description 13
- 238000002513 implantation Methods 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000007788 roughening Methods 0.000 description 5
- 230000014509 gene expression Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a reinforcing structure applied to an existing beam of a metro vehicle section, wherein a chiseling groove is formed in the existing beam, a plurality of upper U-shaped steel bars facing downwards are longitudinally arranged along the chiseling groove, and rough surfaces are formed by chiseling on two sides and the bottom of the existing beam; a plurality of lower U-shaped steel bars which are upward are arranged around the lower part of the existing beam; the lower U-shaped steel bars are arranged along the longitudinal direction of the chiseling groove and are connected with the upper U-shaped steel bars; the longitudinal reinforcing ribs are arranged beside the existing beam and comprise upper longitudinal ribs and lower longitudinal ribs, the upper longitudinal ribs are positioned on two sides of the upper part of the existing beam, and the lower longitudinal ribs are positioned beside the lower part of the existing beam; the upper longitudinal ribs are connected with the upper U-shaped steel ribs, and the lower longitudinal ribs are connected with the lower U-shaped steel ribs; etc. The utility model is additionally provided with the reinforcing structure on the basis of the existing beam, so that the original beam bearing capacity is enhanced, and the bending and shearing bearing capacity of the existing beam is improved.
Description
Technical Field
The utility model relates to the technical field of subway station construction, in particular to a reinforcement technology applied to existing beams of subway vehicle sections.
Background
In general, facilities necessary for a subway include a subway vehicle section, a material warehouse, a comprehensive maintenance center, etc., which are infrastructure necessary for the normal operation of the subway.
The office buildings, factories, libraries and the like matched with the ground vehicle sections mostly adopt frame structures, and frame columns mostly adopt independent foundations. The change of the using function of the factory building often leads to larger load increase of the factory building, which needs to increase the bearing capacity of the existing frame beam.
Reinforcement of existing frame beams is becoming more common. When the bearing capacity and deformation of the original frame beam exceed the allowable values, the bearing capacity of the existing beam needs to be increased.
The utility model application document with publication number of CN110878641A discloses a reinforcing structure and a new construction method of a superposed hollow floor slab grating system, wherein the document is used for planting bars by drilling, then filling structural adhesive into holes of the planted bars for fixing, and pouring concrete after binding of newly added beam slab bars at the top of the structure and laying of polystyrene slab core cylinders are completed, so as to form the superposed hollow floor slab grating structure system. In this way, the existing beam is reinforced, but such methods are suitable for machining on the beam, and can form ridges on the beam, affecting floor use.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a reinforcing structure applied to an existing beam of a metro vehicle section, and the bending resistance and the shearing resistance bearing capacity of the existing beam are improved.
The aim of the utility model is realized by the following technical scheme:
a reinforcing structure applied to existing beams of a metro vehicle section is characterized in that a chiseling groove is formed in the existing beams, a plurality of upper U-shaped steel bars facing downwards are longitudinally arranged along the chiseling groove, and rough surfaces are formed by chiseling the two sides and the bottom of the existing beams; a plurality of lower U-shaped steel bars which are upward are arranged around the lower part of the existing beam; the lower U-shaped steel bars are arranged along the longitudinal direction of the chiseling groove and are connected with the upper U-shaped steel bars;
the longitudinal reinforcing ribs are arranged beside the existing beam and comprise upper longitudinal ribs and lower longitudinal ribs, the upper longitudinal ribs are positioned on two sides of the upper part of the existing beam, and the lower longitudinal ribs are positioned beside the lower part of the existing beam; the upper longitudinal ribs are connected with the upper U-shaped steel ribs, and the lower longitudinal ribs are connected with the lower U-shaped steel ribs;
drilling holes in the transverse direction of the existing beam to form an implantation groove, and arranging transverse reinforcing ribs in the implantation groove; drilling holes on the existing columns on two sides of the existing beam to form reinforcing grooves, wherein the number of the reinforcing grooves is equal to that of the longitudinal reinforcing ribs; the end parts of the upper longitudinal ribs and the lower longitudinal ribs are inserted into the reinforcing grooves; and pouring concrete at the closed stirrup formed by the upper U-shaped steel bar and the lower U-shaped steel bar to form a reinforced concrete layer.
Preferably, the upper U-shaped steel bars and the lower U-shaped steel bars are bound or welded together.
Preferably, the depth of the gouging is 6.5mm-15mm.
Preferably, the distance between the adjacent upper U-shaped steel bars is 600mm-1000mm.
Preferably, the lower longitudinal ribs are located below the existing beam, and the number of the lower longitudinal ribs n=x×n, where x is one of 1,2,3, and 4, and N is the number of the upper longitudinal ribs.
Preferably, the upper longitudinal ribs are bound or welded with the upper U-shaped ribs, and the lower longitudinal ribs are bound or welded with the lower U-shaped ribs.
Preferably, the lower longitudinal bars are disposed on the lower U-shaped bars.
Preferably, the depth of the stiffening grooves is 1200mm-2000mm.
Preferably, the existing beam between the adjacent upper U-shaped steel bars is drilled to form an implantation groove; at least two upper U-shaped steel bars or lower U-shaped steel bars are arranged between the adjacent implantation grooves in the longitudinal direction.
Preferably, at least two layers of transverse reinforcing ribs are arranged in the vertical direction of the existing beam, and the end parts of the transverse reinforcing ribs are connected with the adjacent upper U-shaped reinforcing ribs or lower U-shaped reinforcing ribs through steel wires.
The utility model has at least the following beneficial effects:
according to the utility model, the upper U-shaped steel bars and the lower U-shaped steel bars are arranged as reinforcing pieces, the existing beam is roughened on the basis, the chiseling grooves are arranged, the upper U-shaped steel bars are buckled on the existing beam, the lower U-shaped steel bars are connected through the upper U-shaped steel bars, the longitudinal reinforcing bars and the transverse reinforcing bars are arranged on the basis, the reinforcing structures are arranged through reinforcing structures of a plurality of columns, and finally, the reinforced concrete layer is poured. On the basis of the existing beam, the utility model adds the reinforcing structure to strengthen the original beam bearing capacity and improve the bending and shearing bearing capacity of the existing beam.
In addition, the cross-sectional area of the existing beam is increased, the bearing capacity of the existing beam is improved, and the safety of the structure is ensured. The whole structure is ingenious in design, and the construction modes such as roughening and concrete pouring are common, so that the construction is convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate examples of the present utility model and should not be considered as limiting the scope, and that other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a reinforcement structure for an existing beam of a metro vehicle section according to the present utility model;
FIG. 2 is a schematic view of a longitudinal cross-sectional configuration of the present utility model;
in the figure, 1-existing beam, 2-floor slab, 3-lower longitudinal bar, 4-upper longitudinal bar, 5-chiseled groove, 6-lower U-shaped bar, 7-upper U-shaped bar, 8-embedded groove, 9-transverse reinforcing bar, 10-reinforced concrete layer, 11-reinforced groove and 12-existing column.
Detailed Description
The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.
Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood, however, that there is no intent to limit the disclosure to the particular forms disclosed herein, but rather, the disclosure is to be interpreted to cover various modifications, equivalents, and/or alternatives to the embodiments of the disclosure. In describing the drawings, like reference numerals may be used to designate like constituent elements.
In the present disclosure, the expression "a or B", "at least one of a and/or B" or "one or more of a and/or B" may include all possible combinations of listed items if present. For example, the expressions "a or B", "at least one of a and B" or "at least one of a or B" relate to all of the following cases: (1) comprises at least one a, (2) comprises at least one B, or (3) comprises both at least one a and at least one B.
The expressions used in the different embodiments of the present disclosure, if there are "first", "second", "said first" or "said second" may modify different elements, irrespective of order and/or importance, without limiting the corresponding elements. For example, the first user device and the second user device relate to different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.
It will be understood that when an element (e.g., a first element) is referred to as being "connected" or "coupled" to another element (e.g., a second element), it can be directly connected or coupled to the other element or any other element (e.g., a third element) can be interposed therebetween. In contrast, when an element (e.g., a first element) is referred to as being "directly connected" or "directly coupled" to another element (e.g., a second element), no element (e.g., a third element) is interposed therebetween.
In the present disclosure, the terminology is used to describe specific embodiments and is not limiting of the disclosure. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. In the description, it should be understood that the terms "comprises" or "comprising" indicate the presence of a feature, number, step, operation, structural element, component, or combination thereof, without precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, structural elements, components, or combinations thereof.
It should be understood that specific details are provided in the following description to provide a thorough understanding of the example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, a system may be shown in block diagrams in order to avoid obscuring the examples with unnecessary detail. In other instances, well-known processes, structures, and techniques may not be shown in unnecessary detail in order to avoid obscuring the examples.
Examples
As shown in fig. 1 and 2, in the reinforcing structure of the existing beam 1, a chiseling groove 5 is formed on the existing beam 1, a plurality of upper U-shaped steel bars 7 facing downwards are longitudinally arranged along the chiseling groove 5, and rough surfaces are formed by chiseling two sides and the bottom of the existing beam 1; a plurality of lower U-shaped steel bars 6 which are upward are arranged around the lower part of the existing beam 1; a plurality of lower U-shaped steel bars 6 are arranged along the longitudinal direction of the chiseling 5 and are connected with the upper U-shaped steel bars 7;
the side of the existing beam 1 is provided with a longitudinal reinforcing rib, the longitudinal reinforcing rib comprises an upper longitudinal rib 4 and a lower longitudinal rib 3, the upper longitudinal rib 4 is positioned at two sides of the upper part of the existing beam 1, and the lower longitudinal rib 3 is positioned at the side of the lower part of the existing beam 1; the upper longitudinal bars 4 are connected with upper U-shaped steel bars 7, and the lower longitudinal bars 3 are connected with lower U-shaped steel bars 6;
an implantation groove 8 is formed by drilling in the transverse direction of the existing beam 1, and transverse reinforcing ribs 9 are arranged in the implantation groove 8; the existing columns 12 on the two sides of the existing beam 1 are drilled to form reinforcing grooves 11, and the number of the reinforcing grooves 11 is equal to that of the longitudinal reinforcing ribs; the ends of the upper longitudinal ribs 4 and the lower longitudinal ribs 3 are inserted into the reinforcing grooves 11; and pouring concrete at the closed stirrup formed by the upper U-shaped steel bar 7 and the lower U-shaped steel bar 6 to form a reinforced concrete layer 10.
In this embodiment, the surface of the existing beam 1 is cleaned first, and then the roughening treatment is performed, so that the width and the height of the cross section of the existing beam 1 are increased. Meanwhile, the longitudinal beam ribs and the stirrups formed by the two U-shaped ribs are added, so that the bending and shearing bearing capacity of the existing beam 1 is improved. The embodiment has the advantages of convenient construction and good fireproof performance. It should be noted that in addition to reinforcing the strength of the existing beam 1, the top of the reinforced concrete layer 10 needs to be in high conformity with the top of the floor slab 2 beside the existing beam 1 to ensure the flatness of the floor slab 2.
In a preferred embodiment, the upper U-shaped bar 7 is bound or welded to the lower U-shaped bar 6 to perform a pre-fixing function and to enhance the connection strength between the upper U-shaped bar 7 and the lower U-shaped bar 6.
In a preferred embodiment, the depth of the chisel slot 5 is 6.5mm-15mm. The common diameters of the steel bars are 6mm, 6.5mm, 8mm, 12mm and 14mm, so that the depth of the chiseling groove 5 is set to be 6.5mm-15mm during chiseling, and reserved space is reserved for filling concrete after the upper U-shaped steel bar 7 is arranged, so that the smooth transition between the concrete and the side floor slab 2 is ensured.
In a preferred embodiment, the spacing between adjacent upper U-bars 7 is 600mm-1000mm; the distance between the adjacent lower U-shaped steel bars 6 is 600mm-1000mm. Usually, the length of one beam is more than 8 meters, so that the reasonable spacing between the steel bars is critical. The spacing is determined after practice, so that a plurality of U-shaped steel bars can be installed.
In a preferred embodiment, the lower longitudinal ribs 3 are located below the existing beam 1, and the number n=x×n of lower longitudinal ribs 3, where x is one of 1,2,3,4 and N is the number of upper longitudinal ribs 4. The lower longitudinal ribs 3 are generally not less than the upper longitudinal ribs 4, so that a reasonable multiple is provided, which is beneficial to increasing the stability of the whole reinforcing structure.
In a preferred embodiment, the upper longitudinal bars 4 are tied or welded to the upper U-shaped bars 7 and the lower longitudinal bars 3 are tied or welded to the lower U-shaped bars 6. So as to ensure the stability of each reinforcing steel bar when the concrete is poured. In a preferred embodiment, the lower longitudinal bars 3 are placed on the lower U-shaped bars 6, and the lower U-shaped bars 6 can support the lower longitudinal bars 3.
In a preferred embodiment, as shown in FIG. 2, the depth of the stiffening grooves 11 is 1200mm-2000mm, and the depth of the stiffening grooves 11 is reasonable, typically 1/3-2/3 of the width of the existing column 12.
In a preferred embodiment, the existing beam 1 between adjacent upper U-bars 7 is drilled with an implantation groove 8; at least two upper U-shaped steel bars 7 or lower U-shaped steel bars 6 are arranged between the adjacent implantation grooves 8 in the longitudinal direction, so that a structure in which the transverse reinforcing ribs 9 and the U-shaped steel bars (comprising the upper U-shaped steel bars 7 and the lower U-shaped steel bars 6) are staggered in space is formed, and the situation that the structural strength of a certain place is high and the strength of a certain place is weak after concrete is poured is avoided. This structure sets up rationally, and the reinforcing bar atress is more even.
In a preferred embodiment, at least two layers of transverse reinforcing ribs 9 are arranged in the vertical direction of the existing beam 1, and the end parts of the transverse reinforcing ribs 9 are connected with the adjacent upper U-shaped reinforcing steel bars 7 or lower U-shaped reinforcing steel bars 6 through steel wires, so that the displacement of the transverse reinforcing ribs 9 in the concrete pouring process is avoided. As shown in fig. 2, two layers of lateral reinforcing ribs 9 are provided in the vertical direction, and each layer of lateral reinforcing ribs 9 has 8 lateral reinforcing ribs 9.
In another aspect, the present utility model provides a method for surrounding the above structure, and those skilled in the art will be able to understand the specific implementation and various modifications of the apparatus according to this embodiment, so this embodiment provides a reference for how the apparatus implements the method according to this embodiment of the present utility model.
As shown in fig. 1 to 2, the present embodiment provides a method for reinforcing a structure of an existing beam 1 applied to a metro vehicle section, which comprises the following specific implementation steps:
a. cleaning the surface of the existing beam 1, and then roughening, wherein the roughening depth is more than 6mm;
b. determining the newly increased beam width, and chiseling off the existing plate structure (forming a chiseled groove 5) of the existing floor slab 2 within the range of the newly increased beam width;
c. drilling holes (forming implantation grooves 8) on the side surfaces of the existing beam 1, and implanting reinforcing steel bars (transverse reinforcing steel bars 9) in the drilled holes;
d. drilling holes (forming a reinforcing groove 11) at the corresponding positions of the existing columns 12, and implanting the upper longitudinal ribs 4 and the lower longitudinal ribs 3 of the newly added beam into the existing columns 12 at the two ends of the beam;
e. sleeving the U-shaped stirrups at the upper part of the newly added beam and the U-shaped stirrups at the lower part of the beam, and welding and connecting the stirrups into closed stirrups;
f. erecting a template, and pouring newly-added beam concrete by adopting micro-expansion concrete;
g. and after the concrete reaches the design strength, removing the template.
The utility model provides a reinforcing structure applied to an existing beam 1 of a metro vehicle section. Firstly, cleaning the surface of the existing beam 1, and then roughening treatment is carried out, so that the width and the height of the section of the existing beam 1 are increased. Meanwhile, longitudinal ribs are newly added to the existing beam 1 and are implanted into frame columns at two ends of the beam, so that the bending-resistant bearing capacity of the beam is improved. The U-shaped stirrups at the upper part of the beam and the U-shaped stirrups at the lower part of the beam are newly added, and the upper stirrups and the lower stirrups are welded into closed stirrups so as to improve the shearing bearing capacity of the existing beam 1.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model. The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. Be applied to reinforced structure of existing roof beam of subway vehicle section, its characterized in that: a chiseling groove is formed in the existing beam, a plurality of upper U-shaped steel bars facing downwards are longitudinally arranged along the chiseling groove, and rough surfaces are formed by chiseling the two sides and the bottom of the existing beam; a plurality of lower U-shaped steel bars which are upward are arranged around the lower part of the existing beam; the lower U-shaped steel bars are arranged along the longitudinal direction of the chiseling groove and are connected with the upper U-shaped steel bars;
the longitudinal reinforcing ribs are arranged beside the existing beam and comprise upper longitudinal ribs and lower longitudinal ribs, the upper longitudinal ribs are positioned on two sides of the upper part of the existing beam, and the lower longitudinal ribs are positioned beside the lower part of the existing beam; the upper longitudinal ribs are connected with the upper U-shaped steel ribs, and the lower longitudinal ribs are connected with the lower U-shaped steel ribs;
drilling holes in the transverse direction of the existing beam to form an implantation groove, and arranging transverse reinforcing ribs in the implantation groove; drilling holes on the existing columns on two sides of the existing beam to form reinforcing grooves, wherein the number of the reinforcing grooves is equal to that of the longitudinal reinforcing ribs; the end parts of the upper longitudinal ribs and the lower longitudinal ribs are inserted into the reinforcing grooves; and pouring concrete at the closed stirrup formed by the upper U-shaped steel bar and the lower U-shaped steel bar to form a reinforced concrete layer.
2. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1, wherein: the upper U-shaped steel bar and the lower U-shaped steel bar are bound or welded together.
3. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1, wherein: the depth of the chiseling groove is 6.5mm-15mm.
4. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1, wherein: the distance between the adjacent upper U-shaped steel bars is 600mm-1000mm.
5. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1, wherein: the lower longitudinal ribs are positioned below the existing beam, and the number of the lower longitudinal ribs is n=x×n, wherein x is one of 1,2,3 and 4, and N is the number of the upper longitudinal ribs.
6. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1 or claim 5, wherein: the upper longitudinal ribs are bound or welded with the upper U-shaped steel ribs, and the lower longitudinal ribs are bound or welded with the lower U-shaped steel ribs.
7. The reinforcing structure applied to existing beams of a metro vehicle section as claimed in claim 6, wherein: the lower longitudinal bars are arranged on the lower U-shaped steel bars.
8. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1, wherein: the depth of the reinforcing groove is 1200mm-2000mm.
9. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1, wherein: drilling holes on the existing beam between the adjacent upper U-shaped steel bars to form an implantation groove; at least two upper U-shaped steel bars or lower U-shaped steel bars are arranged between the adjacent implantation grooves in the longitudinal direction.
10. A reinforcing structure for an existing beam of a metro vehicle as claimed in claim 1 or 9, wherein: at least two layers of transverse reinforcing ribs are arranged in the vertical direction of the existing beam, and the end parts of the transverse reinforcing ribs are connected with the adjacent upper U-shaped reinforcing ribs or lower U-shaped reinforcing ribs through steel wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321438662.8U CN220267288U (en) | 2023-06-07 | 2023-06-07 | Reinforcing structure applied to existing beam of metro vehicle section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321438662.8U CN220267288U (en) | 2023-06-07 | 2023-06-07 | Reinforcing structure applied to existing beam of metro vehicle section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220267288U true CN220267288U (en) | 2023-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321438662.8U Active CN220267288U (en) | 2023-06-07 | 2023-06-07 | Reinforcing structure applied to existing beam of metro vehicle section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220267288U (en) |
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2023
- 2023-06-07 CN CN202321438662.8U patent/CN220267288U/en active Active
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