CN117552309A - Steel box girder tuyere structure, manufacturing method and steel box girder bridge - Google Patents
Steel box girder tuyere structure, manufacturing method and steel box girder bridge Download PDFInfo
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- CN117552309A CN117552309A CN202311406953.3A CN202311406953A CN117552309A CN 117552309 A CN117552309 A CN 117552309A CN 202311406953 A CN202311406953 A CN 202311406953A CN 117552309 A CN117552309 A CN 117552309A
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- tuyere
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- protection
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000000565 sealant Substances 0.000 claims abstract description 132
- 239000011241 protective layer Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 38
- 230000001681 protective effect Effects 0.000 claims description 27
- 239000003292 glue Substances 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 7
- 238000007788 roughening Methods 0.000 claims description 7
- 238000007790 scraping Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 description 15
- 230000032683 aging Effects 0.000 description 7
- 238000005286 illumination Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 239000005077 polysulfide Substances 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- 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
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of bridge steel structure manufacturing, in particular to a steel box girder tuyere structure, a manufacturing method and a steel box girder bridge. The embodiment of the application provides a steel box girder tuyere structure, which comprises a plurality of tuyere segments, a first sealant and a protective layer, wherein the tuyere segments are arranged on the steel box girder at intervals, and a gap is arranged between every two adjacent tuyere segments; the first sealant is filled between every two adjacent tuyere segments; the protective layer is arranged between the upper plates of the two tuyere sections to cover the first sealant between the upper plates of the two adjacent tuyere sections and form a limiting space with the first sealant; wherein the upper plate comprises a top plate of the tuyere segment and an upper sloping plate.
Description
Technical Field
The invention relates to the technical field of bridge steel structure manufacturing, in particular to a steel box girder tuyere structure, a manufacturing method and a steel box girder bridge.
Background
The steel box girder wind nozzle structure comprises a plurality of wind nozzle sections, and with the remarkable advantages of vortex-induced vibration resistance and wind resistance of the wind nozzle structure in a large-span steel box girder section wind tunnel test, the connection between the wind nozzle sections is gradually developed from integral welding to connection by a sealing structure. In the related art, the tuyere sections are connected through the sealant, but the sealant is exposed to sunlight for a long time, the temperature changes, the durability is poor, and the degumming is easy.
Disclosure of Invention
The application provides a steel box girder tuyere structure, a manufacturing method and a steel box girder bridge, which improve the technical problems that the sealing glue in the related technology is irradiated by sunlight for a long time, the temperature changes, the durability is poor and the degumming is easy to occur to a certain extent.
In a first aspect, embodiments of the present application provide a steel box girder tuyere structure, including:
the wind nozzle sections are arranged on the steel box girder side by side, and gaps are arranged between every two adjacent wind nozzle sections;
a first sealant filled between each two adjacent tuyere segments;
the protective layer is arranged between the upper plates of the two tuyere sections, so as to cover the first sealant between the upper plates of the two adjacent tuyere sections and form a limiting space with the first sealant; wherein the upper plate comprises a top plate of the tuyere section and an upper inclined plate.
In some embodiments, the protective layer includes a first protective portion and a second protective portion, the upper plate having an inner section and an outer section, the inner section being disposed proximate the steel box girder and the outer section being disposed distal the steel box girder;
the first protection part is arranged between the inner sections of the upper plates of every two adjacent tuyere sections so as to cover first sealant between the inner sections of the upper plates of the two adjacent tuyere sections, and the limit space is formed between the first protection part and the first sealant; the second protection portion is disposed between the outer sections of the upper plates of each adjacent two of the tuyere segments, the second protection portion has opposite first and second ends, the first end is abutted to the first protection portion, and the second end is closed.
In some embodiments, in each two adjacent tuyere segments, the inner sections of the two upper plates are respectively provided with a first connection area, the first connection areas are arranged close to the first sealant, the first protection part comprises a protection section and two connection sections, the two connection sections are respectively stuck to the two first connection areas through the second sealant, the protection section is connected between the two connection sections, and the limit space is formed between the protection section and the first sealant;
in every two adjacent tuyere sections, the outer sections of the two upper plates are respectively provided with a second connecting area, the second connecting areas are close to the first sealing glue, and two sides of the second protecting part are respectively stuck to the two second connecting areas through the second sealing glue.
In some embodiments, the protective segment is arcuate.
In some embodiments, the second protection portion is semi-conical, a bottom surface of the second protection portion is configured as the first end, and an apex of the second protection portion is configured as the second end.
In a second aspect, an embodiment of the present application provides a method for manufacturing a steel box girder tuyere structure, including:
a plurality of tuyere sections are installed on a steel box girder at intervals;
filling a first sealant between every two adjacent tuyere segments;
providing a protective layer between the upper plates of each adjacent two of the tuyere segments such that the protective layer covers the first sealant between the upper plates of the adjacent two of the tuyere segments; the upper plate comprises a top plate of the tuyere section and an upper inclined plate, and a limiting space is formed between the protective layer and the first sealant.
In some embodiments, the step of disposing a protective layer between the upper plates of each adjacent two of the tuyere segments such that the protective layer covers the first sealant between the upper plates of the adjacent two of the tuyere segments comprises:
providing a first protective portion between the inner sections of the upper plates of each adjacent two of the tuyere segments such that the first protective portion covers a first sealant between the inner sections of the upper plates of the adjacent two of the tuyere segments;
a second protection part is arranged between the outer sections of the upper plates of every two adjacent tuyere sections, and is abutted with the first protection part, so that the second protection part covers the first sealant between the outer sections of the upper plates of the two adjacent tuyere sections;
the protection layer comprises a first protection part and a second protection part, the inner section is close to the steel box girder, and the outer section is far away from the steel box girder.
In some embodiments, the step of disposing a first protective portion between the inner sections of the upper plates of each adjacent two of the tuyere segments such that the first protective portion covers a first sealant between the inner sections of the upper plates of the adjacent two of the tuyere segments comprises:
roughening the inner sections of the upper plates of the adjacent two tuyere sections near the area of the first sealant to form a first connection area;
second sealant is coated on the two connecting sections of the first protection part in a scraping mode, and the two connecting sections are respectively adhered to the two first connecting areas;
the first protection part comprises a protection section and two connection sections, the protection section is connected between the two connection sections, and a limiting space is formed between the protection section and the first sealant.
In some embodiments, the step of disposing a second protective portion between the outer sections of the upper plates of each adjacent two of the tuyere segments and abutting the second protective portion to the first protective portion such that the second protective portion covers the first sealant between the outer sections of the upper plates of the adjacent two of the tuyere segments comprises:
roughening the outer sections of the upper plates of the adjacent two tuyere sections near the area of the first sealant to form a second connection area;
a second sealant is coated on the joint surface of the second protection part in a scraping way, the first end of the second protection part is abutted to the first protection part, and two sides of the joint surface are respectively adhered to the two second connection areas;
the second protection part is provided with a first end and a second end which are opposite, the outer contour of the first end is matched with that of the first protection part, and the second end is closed.
In a third aspect, an embodiment of the present application provides a steel box girder bridge, including the steel box girder tuyere structure and the steel box girder described above, two the steel box girder tuyere structure is separately provided at two ends of the steel box girder along a width direction thereof.
The beneficial effects of the application are as follows:
the utility model provides a steel box girder tuyere structure, manufacturing method and steel box girder bridge has set up the protective layer between two upper portion board of tuyere segment to cover adjacent two first sealant between the upper portion board of tuyere segment, thereby the protective layer can protect first sealant, reduces the direct illumination of sun to first sealant, improves the ageing resistance of first sealant, reduces the maintenance number of times, and form spacing space between protective layer and the first sealant, thereby can reserve the space for the deformation of first sealant, and restrict first sealant deformation too big leads to the degumping.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention.
Fig. 1 is a schematic view showing the structure of a steel box girder bridge.
Fig. 2 shows a schematic structural view of the nozzle segment of fig. 1.
Fig. 3 shows a schematic arrangement of two adjacent tuyere segments in fig. 1.
Fig. 4 shows a partial enlarged view at a in fig. 2.
Fig. 5 shows a partial enlarged view at B in fig. 2.
Fig. 6 shows a schematic structural view of the sealing structure in fig. 1.
Fig. 7a shows a schematic view of the installation of the sealing structure of fig. 1.
Fig. 7b shows a second schematic installation view of the sealing structure of fig. 1.
Fig. 7c shows a third installation schematic of the sealing structure of fig. 1.
Reference numerals illustrate:
the steel box girder bridge comprises a 1-steel box girder bridge body, a 10-steel box girder tuyere structure, a 100-tuyere segment, a 110-upper plate, a 111-top plate, a 112-upper inclined plate, a 113-first connecting region, a 120-bottom plate, a 130-gap, a 200-first sealant, a 210-sealing film, a 300-protective layer, a 310-first protective part, a 311-connecting section, a 312-protective part, a 313-limiting space, a 320-second protective part and a 20-steel box girder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all the directional indicators in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1-6, an embodiment of the present application provides a steel box girder tuyere structure 10, which includes a plurality of tuyere segments 100, a first sealant 200 and a protective layer 300, wherein the plurality of tuyere segments 100 are mounted on a steel box girder 20 side by side, and a gap 130 is provided between every two adjacent tuyere segments 100; the first sealant 200 is filled in the slit 130; the protective layer 300 is disposed between the upper plates 110 of the two tuyere segments 100 to cover the first sealant 200 between the upper plates 110 of the adjacent two tuyere segments 100 and form a spacing space 313 with the first sealant 200; wherein the upper plate 110 comprises a top plate 111 and an upper sloping plate 112 of the tuyere segment 100.
The application provides a steel case roof beam tuyere structure 10, two set up protective layer 300 between the upper portion board 110 of tuyere segment 100 to cover adjacent two first sealant 200 between the upper portion board 110 of tuyere segment 100, thereby protective layer 300 can protect first sealant 200, reduce the direct illumination of sun to first sealant 200, improve the ageing resistance of first sealant 200, and form spacing 313 between protective layer 300 and the first sealant 200, thereby can set aside the space for the deformation of first sealant 200, and restrict the too big degumming that leads to of first sealant 200 deformation.
The gap 130 between every two adjacent tuyere segments 100 is a deformation gap, so as to leave a space for deformation of the tuyere segments 100, and prevent the tuyere segments 100 from deformation and cracking due to temperature influence to a certain extent. The first sealant 200 is used to seal the gap 130 between two adjacent tuyere segments 100, and when the tuyere segments 100 are deformed, the first sealant 200 is pressed. In the related art, the gap 130 between two adjacent tuyere segments 100 is narrower, after the first sealant 200 is extruded, the deformation is too small, so that the degumming is easy to be caused, and experimental researches show that when the gap 130 between two adjacent tuyere segments 100 is 40mm, the degumming risk of the first sealant 200 is minimum, and the overall strength of the steel box girder tuyere structure 10 is not affected.
The upper plate 110 of the tuyere segment 100 is a Q345 steel plate with the thickness of 8mm, the maximum temperature difference of the upper plate 110 can reach more than 50 ℃ in summer at high temperature, the upper plate 110 is deformed, for example, the tuyere segment 100 with the length of 15 meters can be stretched by 9mm, the instantaneous wind force of the tip of the tuyere, which can be struck by typhoons or tornadoes along coast or inland, can reach 30-40 meters/second, the stress of the first sealing glue 200 during service is in a space multidimensional direction, the requirement on the breaking elongation of the sealing glue is extremely high, and the maximum breaking elongation of the first sealing glue 200 is only not lower than 250% specified in the standard specification, so that the first sealing glue 200 is easy to creep aging and debonding in 2-3 years. Through experimental study, the first sealant 200 adopts the sealant with the elongation at break of not less than 400% at 23 ℃, so that the aging resistance of the first sealant 200 during use can be enhanced.
The tuyere segment 100 comprises a top plate 111, an upper sloping plate 112 and a bottom plate 120, the top plate 111 and the upper sloping plate 112 together forming an upper plate 110. Since the first sealant 200 between the adjacent upper plates 110 is most illuminated, the protective layer 300 is disposed between the upper plates 110 of the two tuyere segments 100, so that the protective layer 300 covers the first sealant 200 between the upper plates 110 of the adjacent two tuyere segments 100, that is, the first sealant 200 and the protective layer 300 together form a sealing structure of a tuyere structure, and the protective layer 300 can protect the first sealant 200 between the upper plates 110 of the adjacent two tuyere segments 100, thereby reducing direct illumination of the first sealant 200 by the sun and improving the aging resistance and the water resistance of the first sealant 200.
Specifically, the protective layer 300 may be a butyl rubber strip, which is flexible and may be deformed when the tuyere segment 100 stretches, so as not to affect the protection of the first sealant 200.
Since the tuyere segment 100 is stretched by the influence of temperature, the first sealing compound 200 is compressed and deformed, and thus a limiting space 313 is formed between the protective layer 300 and the first sealing compound 200, so that a space is reserved for the deformation of the first sealing compound 200, and the first sealing compound 200 is limited to be deformed too much to cause degumming.
Of course, in other embodiments, the protective layer 300 may be disposed between adjacent bottom plates 120 to further protect the first sealant 200, so as to improve the aging resistance of the first sealant 200.
In some embodiments, the protective layer 300 includes a first protective portion 310 and a second protective portion 320, and the upper plate 110 has an inner section disposed proximate to the steel box girder 20 and an outer section disposed distal from the steel box girder 20. The first protection part 310 is disposed between the inner sections of the upper plates 110 of each adjacent two tuyere segments 100 to cover the first sealant 200 between the inner sections of the upper plates 110 of the adjacent two tuyere segments 100, and a limit space 313 is formed between the first protection part 310 and the first sealant 200; the second protection part 320 is disposed between the outer sections of the upper plates 110 of each adjacent two tuyere segments 100 to cover the first sealant 200 between the outer sections of the upper plates 110 of the adjacent two tuyere segments 100, and the second protection part 320 has opposite first and second ends, the first end being abutted to the first protection part 310 and the second end being closed.
The first protection portion 310 also has opposite first and second ends, and since the inner section is disposed near the steel box girder 20, the first end of the first protection portion 310 can directly contact the steel box girder 20, and the second end of the first protection portion 310 is abutted against the first end of the second protection portion 320, it is obvious that the outer section is disposed near the tip angle of the tuyere segment 100, i.e., the first end of the first protection portion 310 contacts the steel box girder 20, and the second end of the second protection portion 320 is closed, thereby completely closing the protection layer 300 and reducing wind resistance.
Specifically, the outer contour of the first end of the second protection part 320 may entirely correspond to the first protection part 310, so that docking may be achieved.
In some embodiments, in each two adjacent tuyere segments 100, the inner sections of the two upper plates 110 are respectively provided with a first connection region 113, the first connection regions 113 are disposed close to the first sealant 200, the first protection portion 310 includes a protection section 312 and two connection sections 311, the two connection sections 311 are respectively adhered to the two first connection regions 113 through the second sealant, the protection section 312 is connected between the two connection sections 311, and a limiting space 313 is formed between the protection section 312 and the first sealant 200. In each adjacent two tuyere segments 100, the outer sections of the two upper plates 110 have second connection regions (not shown) which are also disposed near the first sealant 200, and both sides of the second protection portion 320 are respectively adhered to the two second connection regions through the second sealant.
Namely, the first and second protective parts 310 and 320 are connected to the adjacent two upper plates 110 through the second sealant to achieve the covering of the first sealant 200. In particular, the second sealant may be a polysulfide elastomer sealant.
It should be noted that, because the first protection portion 310 and the first sealant 200 form the limiting space 313, the first end of the first protection portion 310 may contact the steel box girder 20, and the second end of the first protection portion 310 is hollowed out,
the second protection portion 320 only has the function of blocking the hollowed-out portion to reduce wind resistance, that is, the first protection portion 310 is a main protection structure, the length of the first protection portion is far longer than that of the second protection portion 320, and the lengths of the first protection portion 310 and the second protection portion 320 are set according to actual conditions. The second protection part 320 may have a solid block structure, and it is apparent that both sides of the second protection part 320 refer to both sides along the width direction of the slit 130, and the first and second ends of the second protection part 320 refer to both ends along the length direction of the slit 130.
In some embodiments, the guard segment 312 is arcuate.
That is, the limiting space 313 is an arc-shaped or semicircular space, and of course, the protecting section 312 may also have a rectangular, trapezoid shape, etc., which is not limited thereto. Specifically, the first protection portion 310 may have an "Ω" shape as a whole.
In some embodiments, the second protection part 320 is semi-conical, the bottom surface of the second protection part 320 is configured as a first end, and the vertex of the second protection part 320 is configured as a second end.
Since the outer section is disposed near the sharp corner of the tuyere segment 100, in order for the second protecting portion 320 to adapt to the shape of the outer section, the second protecting portion 320 may have a semi-conical shape having oppositely disposed peaks and bottom surfaces and side surfaces disposed between the peaks and the bottom surfaces, of course, both sides of the side surfaces are connected with the upper plate 110.
Based on the same inventive concept, the embodiment of the application also provides a manufacturing method of the steel box girder tuyere structure, which comprises the following steps:
s1: a plurality of tuyere segments 100 are installed at intervals on the steel box girder 20.
The gap 130 between two adjacent tuyere segments 100 may be 40mm, minimizing the risk of degumming the first sealing glue 200, without affecting the overall strength of the steel box girder tuyere structure 10.
S2: a first sealant 200 is filled between two adjacent tuyere segments 100.
The first sealant 200 is used for sealing the gap 130 between two adjacent tuyere segments 100, and when the tuyere segments 100 are deformed, the first sealant 200 is pressed to adapt to the deformation of the tuyere segments 100.
Specifically, the step of filling the first sealant 200 between each adjacent two tuyere segments 100 includes;
s21: the end surfaces between the upper plates 110 of the adjacent two tuyere sections 100 are napped.
Referring to fig. 7a, the end surfaces are opposite surfaces of two adjacent upper plates 110, the first sealant 200 is filled between the end surfaces of the two adjacent upper plates 110, and the roughening treatment can increase the roughness of the end surfaces, so that the adhesive force between the subsequent first sealant 200 and the end surfaces is improved, and the first sealant 200 can be adhered more firmly and is not easy to fall off.
Of course, in order to ensure corrosion resistance, the end face may be coated with a primer and an intermediate paint before the end face is roughened.
S22: a sealing film 210 is adhered to the underside of the upper plates 110 of the adjacent two tuyere segments 100 such that the sealing film 210 covers the gap 130 between the upper plates 110 of the adjacent two tuyere segments 100.
In connection with fig. 7b, since the first sealant 200 is required to be filled in the gap 130 between the upper plates 110 of the adjacent two tuyere segments 100 in the following, the sealing film 210 is adhered to the lower sides of the upper plates 110 of the adjacent two tuyere segments 100, so that the first sealant 200 can be prevented from falling down during the scraping process.
Of course, the sealing film 210 may be replaced by tape.
S23: the first sealant 200 is filled into the gap 130 between the upper plates 110 of the adjacent two tuyere segments 100.
Referring to fig. 7c, the first sealant 200 may be filled into the gap 130 multiple times layer by layer, and the thickness of the single filling is not more than 2mm, and finally, two sides of the first sealant 200 are respectively aligned with two sides of the upper plate 110.
The first sealant 200 needs to use a sealant having an elongation at break of not less than 400% at 23 ℃ to improve durability of the first sealant 200.
S3: a protective layer 300 is provided between the upper plates 110 of each adjacent two of the tuyere segments 100 such that the protective layer 300 covers the first sealant 200 between the upper plates 110 of the adjacent two tuyere segments 100; the upper plate 110 includes a top plate 111 and an upper inclined plate 112 of the tuyere segment 100, and a limiting space 313 is formed between the protective layer 300 and the first sealant 200.
Referring to fig. 6, the tuyere segment 100 includes a top plate 111, an upper inclined plate 112 and a bottom plate 120, and the top plate 111 and the upper inclined plate 112 together form an upper plate 110. Since the first sealing compound 200 between the adjacent upper plates 110 is most illuminated, the protective layer 300 is disposed between the upper plates 110 of the two tuyere segments 100 such that the protective layer 300 covers the first sealing compound 200 between the upper plates 110 of the adjacent two tuyere segments 100, thereby protecting the first sealing compound 200 between the upper plates 110 of the adjacent two tuyere segments 100, reducing direct illumination of the first sealing compound 200 by the sun, and improving the aging resistance of the first sealing compound 200. Specifically, the protective layer 300 may be a butyl rubber strip that is flexible and may deform as the tuyere segment 100 stretches.
Since the tuyere segment 100 is stretched by the influence of temperature, the first sealing compound 200 is compressed and deformed, and thus a limiting space 313 is formed between the protective layer 300 and the first sealing compound 200, so that a space is reserved for the deformation of the first sealing compound 200, and the first sealing compound 200 is limited to be deformed too much to cause degumming.
Specifically, the step of disposing the protective layer 300 between the upper plates 110 of each adjacent two of the tuyere segments 100 such that the protective layer 300 covers the first sealant 200 between the upper plates 110 of the adjacent two tuyere segments 100 includes:
s31: a first protection part 310 is provided between the inner sections of the upper plates 110 of each adjacent two tuyere segments 100 such that the first protection part 310 covers the first sealant 200 between the inner sections of the upper plates 110 of the adjacent two tuyere segments 100; the first protection portion 310 and the first sealant 200 form a spacing space 313.
The protective layer 300 includes a first protective portion 310 and a second protective portion 320, the inner section of the upper plate 110 being disposed near the steel box girder 20, the outer section of the upper plate 110 being disposed away from the steel box girder 20, it being apparent that the outer section is disposed near the sharp corner of the tuyere segment 100.
Specifically, the step of disposing the first protective portion 310 between the inner sections of the upper plates 110 of each adjacent two of the tuyere segments 100 such that the first protective portion 310 covers the first sealant 200 between the inner sections of the upper plates 110 of the adjacent two of the tuyere segments 100 includes:
s311: the inner sections of the upper plates 110 of the adjacent two tuyere sections 100 are napped in the region close to the first sealing compound 200 to form a first connection region 113.
After the first sealant 200 in step S2 is cured for 7 days, a roughening treatment is performed, which can increase the roughness of the first connection area 113, promote the adhesion between the second sealant and the first connection area 113, and enable the second sealant to be more firmly attached and not easy to fall off.
S312: second sealant is coated on the two connecting sections 311 of the first protection part 310 in a scraping mode, and the two connecting sections 311 are respectively adhered to the two first connecting areas 113; the first protection portion 310 includes a protection section 312 and two connection sections 311, the protection section 312 is connected between the two connection sections 311, and a limiting space 313 is formed between the protection section 312 and the first sealant 200.
The guard segment 312 may be arcuate. That is, the limiting space 313 is an arc-shaped or semicircular space, and of course, the protecting section 312 may also have a rectangular, trapezoid shape, etc., which is not limited thereto. Specifically, the first protection part 310 may have an "Ω" shape.
S32: providing a second protection part 320 between the outer sections of the upper plates 110 of each adjacent two tuyere segments 100, and abutting a first end of the second protection part 320 to the first protection part 310 such that the second protection part 320 covers the first sealant 200 between the outer sections of the upper plates 110 of the adjacent two tuyere segments 100; the second protection portion 320 has opposite first and second ends, the second end being closed.
The first protection portion 310 also has opposite first and second ends, and since the inner section is disposed near the steel box girder 20, the first end of the first protection portion 310 can directly contact the steel box girder 20, and the second end of the first protection portion 310 is abutted against the first end of the second protection portion 320, it is obvious that the outer section is disposed near the tip angle of the tuyere segment 100, i.e., the first end of the first protection portion 310 contacts the steel box girder 20, and the second end of the second protection portion 320 is closed, thereby completely closing the protection layer 300 and reducing wind resistance. The outer contour of the first end of the second protection part 320 may entirely correspond to the first protection part 310, so that docking may be achieved.
Specifically, the step of disposing the second protective portion 320 between the outer sections of the upper plates 110 of each adjacent two of the tuyere segments 100 and abutting the first end of the second protective portion 320 to the first protective portion 310 such that the second protective portion 320 covers the first sealant 200 between the outer sections of the upper plates 110 of the adjacent two of the tuyere segments 100 includes:
s321: roughening the outer sections of the upper plates 110 of the adjacent two tuyere sections 100 near the region of the first sealing compound 200 to form a second connection region;
s322: second sealant is coated on the joint surface of the second protection part 320, the first end of the second protection part 320 is abutted to the first protection part 310, and two sides of the joint surface are respectively adhered to two second connection areas; the second protection portion 320 has a first end and a second end opposite to each other, wherein the outer contour of the first end matches the outer contour of the first protection portion 310, and the second end is closed.
Namely, the first and second protective parts 310 and 320 are connected to the adjacent two upper plates 110 through the second sealant to achieve the covering of the first sealant 200. In particular, the second sealant may be a polysulfide elastomer sealant.
It should be noted that, because the first protection portion 310 and the first sealant 200 form the limiting space 313, the first end of the first protection portion 310 may contact the steel box girder 20, and the second end of the first protection portion 310 is hollowed out, and the second protection portion 320 only serves to seal the hollowed-out portion, so as to reduce wind resistance, that is, the first protection portion 310 is a main protection structure, and its length is far longer than that of the second protection portion 320. The second protection portion 320 may have a solid block structure, and it is apparent that two sides of the bonding surface of the second protection portion 320 refer to two sides along the width direction of the slit 130, and the first end and the second end of the second protection portion 320 refer to two ends along the length direction of the slit 130.
In some embodiments, the second protection part 320 may have a semicircular cone shape, a bottom surface of the second protection part 320 is configured as a first end, and an apex of the second protection part 320 is configured as a second end.
Since the outer section is disposed near the tip angle of the tuyere segment 100, in order to adapt the second protecting portion 320 to the shape of the outer section, the second protecting portion 320 may have a semi-conical shape having an apex and a bottom surface disposed opposite to each other and a side surface disposed between the apex and the bottom surface, and of course, the bonding surface is disposed at the side surface.
After the second sealant is cured for 7 days, the sealing film 210 can be removed, and a finish paint coating construction is sprayed on the gaps 130 of the tuyere segment 100, so that the outer surface of the tuyere structure is ensured to be uniform in color.
Based on the same inventive concept, in conjunction with fig. 1, the embodiment of the present application further provides a steel box girder bridge 1, which includes more than two steel box girder wind nozzle structures 10 and steel box girders 20, where the two steel box girder wind nozzle structures 10 are separately disposed at two ends of the steel box girders 20 along the width direction thereof.
The beneficial effects of the steel box girder bridge 1 provided in the embodiment of the present application are the same as those of the steel box girder tuyere structure 10 described above, and are not described here again.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A steel box girder tuyere structure, comprising:
the wind nozzle sections are arranged on the steel box girder side by side, and gaps are arranged between every two adjacent wind nozzle sections;
the first sealant is filled in the gap;
the protective layer is arranged between the upper plates of the adjacent two tuyere sections to cover the first sealant between the upper plates of the adjacent two tuyere sections and form a limiting space with the first sealant; wherein the upper plate comprises a top plate of the tuyere section and an upper inclined plate.
2. The steel box girder tuyere structure of claim 1, wherein the protection layer includes a first protection portion and a second protection portion, the upper plate has an inner section and an outer section, the inner section is disposed close to the steel box girder, and the outer section is disposed away from the steel box girder;
the first protection part is arranged between the inner sections of the upper plates of the adjacent two tuyere sections so as to cover first sealant between the inner sections of the upper plates of the adjacent two tuyere sections, and the limit space is formed between the first protection part and the first sealant; the second protection portion is arranged between the outer sections of the upper plates of every two adjacent tuyere segments so as to cover first sealant between the outer sections of the upper plates of the two adjacent tuyere segments, and has opposite first ends and second ends, wherein the first ends are butted with the first protection portions, and the second ends are closed.
3. The steel box girder tuyere structure according to claim 2, wherein in each two adjacent tuyere segments, the inner sections of the two upper plates are provided with a first connection area, the first connection area is arranged close to the first sealant, the first protection part comprises a protection section and two connection sections, the two connection sections are respectively stuck to the two first connection areas through the second sealant, the protection section is connected between the two connection sections, and the limit space is formed between the protection section and the first sealant;
in every two adjacent tuyere sections, the outer sections of the two upper plates are respectively provided with a second connecting area, the second connecting areas are close to the first sealing glue, and two sides of the second protecting part are respectively stuck to the two second connecting areas through the second sealing glue.
4. A steel box girder tuyere structure according to claim 3, wherein the protection section is arc-shaped.
5. A steel box girder tuyere structure according to claim 3, wherein the second protection portion is semi-conical, a bottom surface of the second protection portion is configured as the first end, and a vertex of the second protection portion is configured as the second end.
6. The manufacturing method of the steel box girder tuyere structure is characterized by comprising the following steps of:
a plurality of tuyere sections are installed on a steel box girder at intervals;
filling a first sealant between every two adjacent tuyere segments;
providing a protective layer between the upper plates of each adjacent two of the tuyere segments such that the protective layer covers the first sealant between the upper plates of the adjacent two of the tuyere segments; the upper plate comprises a top plate of the tuyere section and an upper inclined plate, and a limiting space is formed between the protective layer and the first sealant.
7. The method of manufacturing a steel box girder tuyere structure according to claim 6, wherein the step of disposing a protective layer between upper plates of each adjacent two tuyere segments such that the protective layer covers a first sealant between the upper plates of the adjacent two tuyere segments comprises:
providing a first protective portion between the inner sections of the upper plates of each adjacent two of the tuyere segments such that the first protective portion covers a first sealant between the inner sections of the upper plates of the adjacent two of the tuyere segments;
a second protection part is arranged between the outer sections of the upper plates of every two adjacent tuyere sections, and is abutted with the first protection part, so that the second protection part covers the first sealant between the outer sections of the upper plates of the two adjacent tuyere sections;
the protection layer comprises a first protection part and a second protection part, the inner section is close to the steel box girder, and the outer section is far away from the steel box girder.
8. The method of manufacturing a steel box girder tuyere structure according to claim 7, wherein the step of disposing a first protection portion between inner sections of upper plates of each adjacent two tuyere segments such that the first protection portion covers a first sealant between the inner sections of the upper plates of the adjacent two tuyere segments comprises:
roughening the inner sections of the upper plates of the adjacent two tuyere sections near the area of the first sealant to form a first connection area;
second sealant is coated on the two connecting sections of the first protection part in a scraping mode, and the two connecting sections are respectively adhered to the two first connecting areas;
the first protection part comprises a protection section and two connection sections, the protection section is connected between the two connection sections, and a limiting space is formed between the protection section and the first sealant.
9. The method of manufacturing a steel box girder tuyere structure according to claim 7, wherein the step of disposing a second protection portion between outer sections of upper plates of each adjacent two tuyere sections and abutting the second protection portion to the first protection portion such that the second protection portion covers a first sealant between outer sections of upper plates of the adjacent two tuyere sections comprises:
roughening the outer sections of the upper plates of the adjacent two tuyere sections near the area of the first sealant to form a second connection area;
a second sealant is coated on the joint surface of the second protection part in a scraping way, the first end of the second protection part is abutted to the first protection part, and two sides of the joint surface are respectively adhered to the two second connection areas;
the second protection part is provided with a first end and a second end which are opposite, the outer contour of the first end is matched with that of the first protection part, and the second end is closed.
10. A steel box girder bridge comprising two steel box girder tuyere structures according to any one of claims 1 to 5 and a steel box girder, the two steel box girder tuyere structures being separately provided at both ends of the steel box girder in a width direction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311406953.3A CN117552309A (en) | 2023-10-27 | 2023-10-27 | Steel box girder tuyere structure, manufacturing method and steel box girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311406953.3A CN117552309A (en) | 2023-10-27 | 2023-10-27 | Steel box girder tuyere structure, manufacturing method and steel box girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117552309A true CN117552309A (en) | 2024-02-13 |
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ID=89811858
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311406953.3A Pending CN117552309A (en) | 2023-10-27 | 2023-10-27 | Steel box girder tuyere structure, manufacturing method and steel box girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117552309A (en) |
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2023
- 2023-10-27 CN CN202311406953.3A patent/CN117552309A/en active Pending
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