CN108824191B - Construction process of group nail connecting device with corrugated sleeve - Google Patents
Construction process of group nail connecting device with corrugated sleeve Download PDFInfo
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- CN108824191B CN108824191B CN201810876364.4A CN201810876364A CN108824191B CN 108824191 B CN108824191 B CN 108824191B CN 201810876364 A CN201810876364 A CN 201810876364A CN 108824191 B CN108824191 B CN 108824191B
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- sleeve
- corrugated sleeve
- bridge deck
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
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Abstract
The invention discloses a construction process of a group nail connecting device with a corrugated sleeve, which comprises the following steps: step 1: welding the welding nails to the steel beam; step 2: placing, positioning and binding steel bars in the concrete bridge deck on the steel beams; and step 3: cutting off the metal corrugated sleeve; and 4, step 4: placing the cut metal corrugated sleeve on the welding nail connecting piece; and 5: pouring concrete of the concrete bridge deck; step 6: pouring a cement-based material into the metal corrugated sleeve; and 7: and maintaining the cement-based material in the holes to complete the whole construction of the group nail connecting device with the corrugated sleeve. The construction process of the group nail connecting device with the corrugated sleeve can effectively avoid various defects of the traditional group nail connecting piece in concrete bridge deck construction, and is simple in construction, convenient to operate and reliable in overall quality of the device.
Description
Technical Field
The invention relates to the technical field of connection of steel and concrete in a concrete combined structure, in particular to a construction process of a group nail connecting device with a corrugated sleeve.
Background
In steel-concrete slab composite structural bridges, prestressed steel strands are often used to apply prestressing in order to reduce the tensile stress level of the concrete slab in the hogging moment region. In order to improve the efficiency of applying the prestress, it is necessary to separate the concrete slab from the steel beam while applying the prestress, and to connect the concrete slab and the steel beam together by the group pin after the prestress is applied. The group nail connecting piece is mutually staggered with the reinforcing steel bars in the bridge deck slab, the wood formwork is extremely complicated to support when the group nail connecting piece is manufactured on site, even if the formwork is manufactured, the formwork is difficult to remove when a concrete slab is poured, and the quality of the concrete bridge deck slab with the holes is difficult to ensure.
Disclosure of Invention
The invention aims to provide a construction process of a group nail connecting device with a corrugated sleeve, which aims to solve the problems in the prior art, effectively avoid various defects of the traditional group nail connecting piece in concrete bridge deck construction, and has the advantages of simple construction, convenient operation and reliable overall quality of the device.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a construction process of a group nail connecting device with a corrugated sleeve, which comprises the following steps:
step 1: welding each welding nail in the group nail connecting piece to the steel beam according to the designed position;
step 2: placing, positioning and binding steel bars in the concrete bridge deck on the steel beam according to design requirements;
and step 3: the corrugated sleeve is a metal corrugated sleeve, the metal corrugated sleeve is cut off, the cutting length of the sleeve is less than or equal to the thickness of a concrete bridge deck plate, and the cut-off sections are flush;
and 4, step 4: the cut-off metal corrugated sleeve is placed on the welding nail connecting piece, a metal corrugated sleeve is placed outside each welding nail, the inner wall of the sleeve is not contacted with the welding nail, the outer wall of the sleeve is tightly contacted with the reinforcing mesh, and the cut-off surface of the sleeve is tightly contacted with the steel plate of the steel beam;
and 5: pouring concrete of the concrete bridge deck according to the size of the concrete bridge deck required by design;
step 6: pouring a cement-based material into the metal corrugated sleeve, wherein the filling height of the cement-based material is flush with the top plate of the concrete bridge deck; the strength of the cement-based material is greater than that of the concrete bridge deck;
and 7: and curing the cement-based material in the hole, and finishing the whole construction of the group nail connecting device with the corrugated sleeve after the design strength requirement is met.
Optionally, in step 4, if the mesh of the reinforcing mesh is square, the sleeve is in contact with four surrounding reinforcing steel bars; the reinforcing bar mesh is the rectangle then two reinforcing bars contacts on sleeve and long limit, when telescopic external diameter is less than the minor face of reinforcing bar mesh, need manual carry out the extrusion on the cross section to corrugated metal sleeve, become the ellipse to the cross-section for oval major axis is big than the minor face of reinforcing bar mesh, makes corrugated metal sleeve can block in the reinforcing bar mesh, and relies on the reinforcing bar mesh to fix a position.
Optionally, the metal corrugated sleeve is a cylindrical structure with a hollow interior; the outer wall of the metal corrugated sleeve is uniformly provided with axial corrugations.
Optionally, the axial corrugations have different sizes of wave crests and wave troughs, and the strength and the elastic modulus of the corrugated sleeve are greater than those of the concrete bridge deck.
Optionally, the wave crests and wave troughs of the axial corrugations are the same in size, and the strength and the elastic modulus of the material of the corrugated sleeve are greater than those of the concrete slab.
Optionally, the steel beam is of an I-shaped structure or a box-shaped structure; the steel beam of the I-shaped structure comprises an upper flange plate, a lower flange plate and a web plate, and the welding nails are fixedly arranged on the upper flange plate.
Optionally, in step 6, before the cement-based material is poured into the metal corrugated sleeve, basic construction operations required for designing the concrete bridge deck, such as tensioning prestress, standing for a specified time period, and the like, need to be performed.
Optionally, the order of step 1, step 2 and step 3 can be exchanged, and step 1, step 2 and step 3 can be performed simultaneously.
Compared with the prior art, the invention has the following technical effects:
the group nail connecting device with the corrugated sleeve is simple and reliable in construction process, simple in structure and convenient to construct due to the adoption of the corrugated sleeve, and the wave crests and the wave troughs of the corrugated sleeve are distributed along the length direction of the sleeve; the wall thickness of the sleeve is very thin, so that the sleeve does not need to participate in structural stress, and meanwhile, the deformation of the cross section is easy to generate when the sleeve is conveniently installed manually on site; the length of the sleeve is equivalent to the height of the group nail connecting piece; the diameter of the sleeve is equivalent to the spacing of the steel bars, so that one sleeve is placed outside one welding nail connector and is in contact with and propped against one steel bar mesh in the bridge deck by manually adjusting the cross section size of the sleeve during field installation; the high-strength cement-based material must have better fluidity, ensures that the cement-based material can be fully filled in all gaps between the welding nail connecting piece and the corrugated sleeve, ensures the force transmission requirement between the welding nail connecting piece and the bridge deck slab, improves the integral structural strength and has good stress.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic perspective view of a group nail connection device with a corrugated sleeve according to the present invention;
fig. 2 is a schematic view of the reinforcing mesh structure of the group nail connecting device with corrugated sleeves according to the present invention;
FIG. 3 is a schematic view of a corrugated sleeve structure of the group nail connecting device with a corrugated sleeve according to the present invention;
wherein, 1 is concrete bridge deck slab, 2 is the girder steel, 3 is corrugated sleeve, 4 is the reinforcing bar net.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention aims to provide a construction process of a group nail connecting device with a corrugated sleeve, which aims to solve the problems in the prior art, effectively avoid various defects of the traditional group nail connecting piece in concrete bridge deck construction, and has the advantages of simple construction, convenient operation and reliable overall quality of the device.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a construction process of a group nail connecting device with a corrugated sleeve, which comprises the following specific steps:
step 1: each welding nail in the group nail connecting piece is welded to the steel beam 2 according to the designed position.
Step 2: and placing, positioning and binding the steel bars in the concrete bridge deck slab 1 on the steel beams according to the design requirements to form a steel bar mesh 4.
And step 3: the corrugated metal thin-wall sleeve is cut, the cut length of the sleeve is less than or equal to the thickness of the concrete bridge deck slab 1, the length of the sleeve is strictly forbidden to be greater than the thickness of the concrete bridge deck slab 1, and the cut section is parallel and level to the cut section.
And 4, step 4: the cut-off metal corrugated sleeve 3 is placed on the welding nail connecting piece, a corrugated sleeve 3 is placed outside each welding nail, the inner wall of the sleeve is not contacted with the welding nail, the outer wall of the sleeve is closely contacted with the reinforcing mesh 4, and the cut-off surface of the sleeve is closely contacted with the steel plate of the steel beam 2. If the mesh of the reinforcing mesh 4 is square, the sleeve is in contact with four surrounding reinforcing steel bars; if the mesh of the reinforcing mesh 4 is rectangular, the sleeve is in contact with two steel bars on the long side, when the outer diameter of the sleeve is slightly less than the short side of the mesh of the reinforcing mesh, the corrugated sleeve 3 can be manually extruded on the cross section, the cross section is changed into an approximate ellipse, the long axis of the ellipse is slightly larger than the short side of the mesh of the reinforcing mesh, the corrugated sleeve 3 can be clamped in the reinforcing mesh and positioned by means of the reinforcing mesh 4.
And 5: concrete of the concrete bridge deck 1 is poured according to the size of the concrete bridge deck 1 required by design, and the concrete is ensured not to enter the corrugated sleeve 3 during pouring.
Step 6: after the concrete bridge deck slab 1 is subjected to basic construction operation required by design (such as tensioning prestress, standing and storing for a specified time period and the like), pouring a cement-based material with high fluidity, high strength and micro-expansion into the metal corrugated sleeve, and ensuring that the cement-based material fills all gaps between the welding nails and the metal corrugated sleeve, so that the welding nails are completely and tightly wrapped by the cement-based material, and the filling height of the cement-based material is flush with the top plate of the concrete bridge deck slab 1; the strength of the cement-based material is greater than the strength of the concrete deck slab 1.
And 7: and (4) properly maintaining the cement-based material in the holes, and completing the whole construction of the group nail connecting device of the metal strip corrugated sleeve after the cement-based material meets the design strength requirement.
The sequence of step 3 may be exchanged with the sequence of step 1 and step 2, or may be performed simultaneously in parallel, and other construction sequences cannot be exchanged.
Specifically, the group nail connecting device with the corrugated sleeve after the construction process is completed is shown in fig. 1. In the above steps, the reinforcing mesh and the corrugated sleeve structure are shown in fig. 2-3, wherein 1 is a concrete bridge deck, 2 is a steel beam, 3 is a corrugated sleeve, and 4 is a reinforcing mesh.
The group nail connecting device with the corrugated sleeve is simple and reliable in construction process, each welding nail in the group nail connecting piece is welded to the steel beam 2 according to the designed position, the corrugated sleeve 3 is adopted, the structure is simple, the construction is convenient, and the wave crests and the wave troughs of the corrugated sleeve 3 are distributed along the length direction of the sleeve; the wall thickness of the sleeve is very thin, so that the sleeve does not need to participate in structural stress, and meanwhile, the deformation of the cross section is easy to generate when the sleeve is conveniently installed manually on site; the length of the sleeve is equivalent to the height of the group nail connecting piece; the diameter of the sleeve is equivalent to the spacing of the steel bars, so that one sleeve is placed outside one welding nail connector and is in contact with and propped against one steel bar mesh 4 in a steel bar mesh 4 grid of the concrete bridge deck slab 1 by manually adjusting the cross section size of the sleeve during field installation; the high-strength cement-based material must have good fluidity, ensures that the cement-based material can be fully filled in all gaps between the welding nail connecting piece and the corrugated sleeve 3, ensures the force transmission requirement between the welding nail connecting piece and the concrete bridge deck slab 1, improves the integral structural strength and has good stress.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. The utility model provides a take telescopic crowd's nail connecting device's of ripple construction technology which characterized in that: the method comprises the following steps:
step 1: welding each welding nail in the group nail connecting piece to the steel beam according to the designed position;
step 2: placing, positioning and binding steel bars in the concrete bridge deck on the steel beam according to design requirements;
and step 3: cutting off the metal corrugated sleeve, wherein the cutting length of the sleeve is less than or equal to the thickness of the concrete bridge deck slab, and the cut-off sections are parallel and level;
and 4, step 4: the cut-off metal corrugated sleeve is placed on the welding nail connecting piece, a metal corrugated sleeve is placed outside each welding nail, the inner wall of the sleeve is not contacted with the welding nail, the outer wall of the sleeve is tightly contacted with the reinforcing mesh, and the cut-off surface of the sleeve is tightly contacted with the steel plate of the steel beam; in the step 4, if the meshes of the reinforcing mesh are square, the sleeve is in contact with four surrounding reinforcing steel bars; when the outer diameter of the sleeve is smaller than the short side of the steel bar mesh, the cross section of the metal corrugated sleeve needs to be manually extruded, the cross section is changed into an oval shape, the long axis of the oval is larger than the short side of the steel bar mesh, the metal corrugated sleeve can be clamped in the steel bar mesh, and the metal corrugated sleeve is limited and fixed by the upper and lower steel bar meshes; the flush section is closely attached to the surface of a steel beam top plate of the welding nail, so that concrete outside the subsequent pouring sleeve can not enter the sleeve from a bottom gap;
and 5: pouring concrete on the outer part of the metal corrugated sleeve on the concrete bridge deck according to the size of the concrete bridge deck required by design;
step 6: after the concrete outside the sleeve meets the strength requirement, performing a tensioning process of the prestress of the concrete bridge deck plate according to design requirements, ensuring that the concrete poured firstly is not contacted with the welding nails during tensioning the prestress, pouring a cement-based material into the metal corrugated sleeve, and enabling the filling height of the cement-based material to be flush with the top plate of the concrete bridge deck plate; the strength of the cement-based material is greater than that of the bridge deck concrete;
and 7: and curing the cement-based material in the hole, and finishing the whole construction of the group nail connecting device with the corrugated sleeve after the design strength requirement is met.
2. The construction process of the group nail connection device with the corrugated sleeve according to claim 1, wherein: the metal corrugated sleeve is of a cylindrical structure with a hollow interior; the outer wall of the metal corrugated sleeve is uniformly provided with axial corrugations.
3. The construction process of the group nail connection device with the corrugated sleeve according to claim 2, wherein: the strength and elastic modulus of the corrugated sleeve material are greater than those of the concrete bridge deck.
4. The construction process of the group nail connection device with the corrugated sleeve according to claim 1, wherein: the steel beam is of an I-shaped structure or a box-shaped structure; the steel beam of the I-shaped structure comprises an upper flange plate, a lower flange plate and a web plate, and the welding nails are fixedly arranged on the upper flange plate.
5. The construction process of the group nail connection device with the corrugated sleeve according to claim 1, wherein: in the step 6, before the cement-based material is poured into the metal corrugated sleeve, basic construction operations required by the design of the concrete bridge deck, such as tensioning prestress and static storage for a specified time period, need to be performed.
6. The construction process of the group nail connection device with the corrugated sleeve according to claim 1, wherein: the sequence of the step 1, the step 2 and the step 3 can be exchanged, and the step 1, the step 2 and the step 3 can be carried out simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810876364.4A CN108824191B (en) | 2018-08-03 | 2018-08-03 | Construction process of group nail connecting device with corrugated sleeve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810876364.4A CN108824191B (en) | 2018-08-03 | 2018-08-03 | Construction process of group nail connecting device with corrugated sleeve |
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| CN108824191A CN108824191A (en) | 2018-11-16 |
| CN108824191B true CN108824191B (en) | 2020-06-09 |
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| CN109930466B (en) * | 2019-04-10 | 2024-06-04 | 西南交通大学 | Steel-ECC-concrete composite beam and preparation method thereof |
| CN114592396A (en) * | 2022-03-14 | 2022-06-07 | 济南四建集团建材有限责任公司 | Rapid permeable pavement |
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| KR100689091B1 (en) * | 2006-08-08 | 2007-03-02 | 연세대학교 산학협력단 | Continuous bridge using hybrid girder |
| CN203546589U (en) * | 2013-10-24 | 2014-04-16 | 同济大学 | Steel girder-integral lifting arm prefabricated concrete bridge panel combined girder bridge |
| CN105239720A (en) * | 2015-11-18 | 2016-01-13 | 湖南大学 | Prefabricated assembled steel-concrete composite beam connected by adopting high-strength bolt |
| CN106906747A (en) * | 2016-10-28 | 2017-06-30 | 上海市政工程设计研究总院（集团）有限公司 | A kind of column and bent cap splicing structure |
| CN106677074B (en) * | 2017-02-23 | 2018-07-27 | 河南省交通规划设计研究院股份有限公司 | Prefabricated assembled Wavelike steel webplate T beam bridges |
| CN106835951B (en) * | 2017-03-28 | 2018-12-07 | 宁波金蛟龙重工钢构有限公司 | The replaceable prefabricated assembled combined beam structure of one kind and manufacturing process |
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