CN213709190U - Hollow slab bridge - Google Patents
Hollow slab bridge Download PDFInfo
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- CN213709190U CN213709190U CN202022091057.0U CN202022091057U CN213709190U CN 213709190 U CN213709190 U CN 213709190U CN 202022091057 U CN202022091057 U CN 202022091057U CN 213709190 U CN213709190 U CN 213709190U
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Abstract
The utility model relates to a hollow slab bridge, its roof beam body include hollow slab roof beam and girder steel structure, and grout in order to form the hinge joint between the hollow slab roof beam of girder steel structure and corresponding side, connecting plate and girder steel structure and girder steel adjoin two fixed connection at the bottom of the pocket to the pocket bottom blocks the concrete when the grout forms the hinge joint, sets up the cast-in-place layer reinforcing bar of mating formation of girder steel, with the girder steel borders on the cast-in-place layer reinforcing bar fixed connection of mating formation of side of roof beam top to arrange the cast-in-place layer of mating formation of concrete, cover the cast-in-place layer reinforcing bar of mating formation of girder steel structure and girder steel to form steel and. The damaged hollow slab beam is replaced by the steel beam structural part, the hollow slab beam does not need to be customized to a manufacturer, the maintenance time of prefabricating the hollow slab beam by the manufacturer is saved, the maintenance period is effectively shortened, the maintenance cost is reduced, the construction is convenient, and the quick replacement and maintenance are convenient.
Description
Technical Field
The utility model relates to a hollow slab bridge.
Background
Hollow slab is used for well small-span bridge more, it adopts the prefabricated assembly mode, the hollow slab bridge that has now is the hollow slab bridge structure disclosed in the chinese utility model patent as the grant bulletin number CN207633187U more, including a plurality of prefabricated hollow slab roof beams that arrange in proper order, hollow slab roof beam arranges along the bridge span in proper order, set up the hinge joint between the adjacent hollow slab roof beam, the hinge joint includes hinge joint frame and filled concrete, and, for improving structural performance, still correspond and be provided with horizontal strip and vertical strip, adopt steel bar structure more, with structural connection such as these reinforcing bars and hinge joint frame together, carry out the bridge deck pavement again can, construction convenience, economic nature is better, use comparatively extensively in the traffic field.
In fact, after the hollow slab bridge is used for years, the individual hollow slab beams are easy to be damaged, and the damaged hollow slab bridge needs to be replaced. Because the time apart from bridge construction is too long, can not reserve the hollow slab beam usually, mainly adopt two kinds of modes to maintain at present: 1. casting the plate girder on site; 2. and replacing the prefabricated hollow plate girder. When the plate girder is poured on a construction site, templates, brackets and the like are required to be arranged, labor and time are wasted, the concrete curing time is required to be particularly long due to the large consumption of concrete, the construction period is particularly long, and the influence on normal traffic is great. When the control plate beam is customized to a manufacturer, because the hollow plate beam is formed by pouring concrete, the customization takes a long time in consideration of the concrete curing time, the construction period can be prolonged, and the influence on the normal traffic is large.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hollow slab bridge to need lead to the longer and technical problem who influences the traffic of construction period to producer's customization hollow slab roof beam when changing the hollow slab roof beam of damaging individually among the solution prior art.
In order to achieve the above object, the utility model provides a hollow slab bridge's technical scheme 1 is: a hollow slab bridge comprising:
the beam body comprises a plurality of hollow plate beams which are sequentially arranged along the left-right span direction of the beam body, and each hollow plate beam extends along the left-right width direction of the beam body;
the steel beam structural part extends along the front and rear width directions of the beam body, grouting is performed between the steel beam structural part and the hollow plate beams on the corresponding sides to form hinge joints, and the hollow plate beams on the corresponding sides are defined as steel beam adjacent beams;
the pocket bottom connecting plate is fixedly connected with two adjacent steel beam structural parts and two adjacent steel beams, and is positioned below the adjacent steel beam so as to block concrete at the pocket bottom when a hinge joint is formed by grouting;
the steel beam cast-in-place pavement layer steel bars are connected with the upper part of the steel beam structural part and fixedly connected with the side cast-in-place pavement layer steel bars above the steel beam adjacent beam;
and the concrete cast-in-place pavement layer covers the steel beam structural part and the steel bars of the steel beam cast-in-place pavement layer to form a reinforced concrete combined structure.
The beneficial effects are that: the utility model provides an among the hollow slab bridge, perhaps when the hollow slab beam that needs replacement damage when the hollow slab bridge length of extension, can adopt girder steel structure spare replacement hollow slab beam, utilize the pocket bottom connecting plate to adjoin the roof beam with girder steel structure spare and girder steel and be connected the back, grout in order to form the hinge joint between girder steel structure spare and girder steel adjacent beam, thereby be in the same place girder steel structure spare and hollow slab beam fixed connection, and with girder steel cast-in-place layer reinforcing bar of mating formation and the cast-in-place layer reinforcing bar fixed connection of mating formation of side of laying of layer of laying of steel, and utilize the cast-in-place layer of laying of concrete that the top grout formed to cover girder steel structure spare and the cast-in-place layer reinforcing bar of mating formation of girder steel, in. When the steel beam structural part is adopted to replace the hollow plate beam, the hollow plate beam does not need to be customized to a manufacturer, the concrete curing time for manufacturing the hollow plate beam by the manufacturer is saved, the bridge maintenance time is effectively shortened, the maintenance cost is reduced, the construction is convenient, and the quick replacement and maintenance are convenient.
The technical scheme 2 of the hollow slab bridge is further improved on the basis of the technical scheme 1 of the hollow slab bridge:
the steel beam structure includes:
the left web plate and the right web plate are arranged at intervals, at least one web plate is a hinge joint web plate, grouting is performed between the hinge joint web plate and the adjacent beam of the steel beam on the corresponding side to form a hinge joint, and a pocket bottom connecting structure is arranged at the bottom of the hinge joint web plate and is fixedly connected with the pocket bottom connecting plate;
the upper parts of the two side webs are provided with steel bar connecting structures which are connected with steel bars of the steel beam cast-in-place pavement layer;
the transverse connecting plate is positioned between the two side webs, is fixedly connected with the two side webs, and extends along the front-back direction to form a groove-shaped structure with the two side webs;
the lower connecting piece is positioned below the transverse connecting plate and fixedly connected with the webs on two sides, and the lower connecting piece extends along the front-back direction or is distributed with a plurality of connecting pieces at intervals along the front-back direction.
The beneficial effects are that: the steel beam structural part adopts the form of both sides web and transverse connection board, lower connecting piece, and overall structure is simple, and it is comparatively convenient to produce the preparation, and moreover, transverse connection board and both sides web form the cell type structure, conveniently form the steel-concrete integrated configuration, improve the bonding property of steel beam structural part and concrete, improve the bulk strength of bridge after restoreing.
The technical scheme 3 of the hollow slab bridge is further improved on the basis of the technical scheme 2 of the hollow slab bridge: the bottom correspondence of left side web, right side web has set firmly left side bottom plate, right side bottom plate, and each side bottom plate has the inside board portion that is located both sides web inboard in opposite directions and the outside board portion that is located both sides web outside mutually, the inside board portion of each side bottom plate with connecting piece fixed connection down, the corresponding side bottom plate of hinge joint web bottom is mounting plate at the bottom of the pocket, and mounting plate's outside board portion is equipped with at the bottom of the pocket connection structure.
The beneficial effects are that: set up corresponding side bottom plate respectively in both sides web bottom, connecting piece under the connection of the interior plate portion of both sides bottom plate, the outer side board portion of the corresponding side bottom plate of hinge joint web bottom then connects the pocket bottom connecting plate, not only can effectively improve girder steel structure self intensity, also conveniently connects the pocket bottom connecting plate.
The technical scheme 4 of the hollow slab bridge is further improved on the basis of the technical scheme 2 of the hollow slab bridge: and the webs on the two sides are both corrugated steel webs.
The beneficial effects are that: by adopting the corrugated steel web plate, the strength of the web plate can be ensured, the contact area with concrete can be increased, and the overall strength of the repaired bridge is effectively improved.
The technical scheme 5 of the hollow slab bridge is further improved on the basis of the technical scheme 2 of the hollow slab bridge: pegs are arranged on the upper side of the transverse web and/or on the outer side of the hinge webs projecting toward the respective hinge.
The beneficial effects are that: the upper side of the transverse connecting plate and/or the outer side of the hinge seam web plate protruding towards the corresponding hinge seam are provided with the studs, so that the studs can be inserted into the corresponding concrete, and the bonding performance is improved.
The technical scheme 6 of the hollow slab bridge is further improved on the basis of the technical scheme 2 of the hollow slab bridge: the steel beam cast-in-place pavement layer steel bar comprises perforated steel bars, the perforated steel bars extend in the left-right direction and are distributed in sequence at intervals in the front-back direction, the steel bar connection structures on the upper portions of the two side webs are perforated, the perforated steel bars are correspondingly arranged in corresponding perforations in a penetrating mode, and the corresponding ends of the perforated steel bars are fixedly connected with the side cast-in-place pavement layer steel bars on the corresponding sides.
The beneficial effects are that: the web plate is provided with the through holes so as to penetrate through the through-hole reinforcing steel bars, and the installation is convenient in site construction.
The technical scheme 7 of the hollow slab bridge is further improved on the basis of the technical scheme 3 of the hollow slab bridge: when the lower connecting piece has a plurality of along preceding back direction interval distribution, the lower connecting piece is the cross slab that extends along upper and lower direction, and left side bottom plate and right side bottom plate interval arrangement are in order to form the maintenance interval.
The beneficial effects are that: adopt the diaphragm to support both sides web, simultaneously, by both sides bottom plate interval arrangement in order to form the maintenance interval, be convenient for carry out the maintenance renovation after the equipment to the girder steel structure.
The technical scheme 8 of the hollow slab bridge is further improved on the basis of the technical scheme 3 of the hollow slab bridge: the connecting plate has inner connecting portion and outer connecting portion at the bottom of the pocket, and the outer panel portion fixed connection of mounting plate at the bottom of the inner connecting portion of connecting plate and the pocket, the outer connecting portion of connecting plate and the downside fixed connection of the girder steel adjacent beam of corresponding side at the bottom of the pocket, the relative outer connecting portion of inner connecting portion in the connecting plate staggered arrangement downwards at the bottom of the pocket to form the dislocation step on the connecting plate at the bottom of the pocket.
The beneficial effects are that: the staggered steps are formed on the pocket bottom connecting plate, so that the contained concrete can be increased, and the bonding performance is improved.
The technical scheme 9 of the hollow slab bridge is further improved on the basis of the technical scheme 8 of the hollow slab bridge: the outer connecting portion of the pocket bottom connecting plate is connected with the lower side face of the steel beam adjacent beam of the corresponding side in a bonding mode.
The beneficial effects are that: the outer connecting portion and the girder steel adjacent joint roof beam of connecting plate at the bottom of the mode fixed connection pocket that adopt adhesive connection can not lead to the fact the influence to girder steel adjacent joint roof beam from applying for intensity, avoid causing extra damage to the roof beam body.
The technical scheme 10 of the hollow slab bridge is further improved on the basis of the technical scheme 8 of the hollow slab bridge: the lower side surface of the steel beam adjacent beam at the corresponding side of the steel beam structural member is provided with a protruding inner end, the protruding inner end is arranged towards the corresponding steel beam structural member in a protruding mode, the outer connecting portion of the pocket bottom connecting plate is located on the outer side of the protruding inner end of the steel beam adjacent beam at the corresponding side and matched with the staggered step on the pocket bottom connecting plate, and therefore the bottom of a hinge joint formed between the steel beam structural member and the steel beam adjacent beam at the corresponding side is of a hook-shaped structure.
The beneficial effects are that: the outer connecting portion is located the protruding inner outside of corresponding girder steel abutting beam, and with the dislocation step cooperation on the pocket bottom connecting plate, form sunk structure, when the grout forms the hinge joint, can make the hinge joint bottom be hook-shaped structure correspondingly, can hook girder steel abutting beam in the reverse direction, effectively improve the cohesion of girder steel structure spare and girder steel abutting beam, improve the bulk strength of bridge.
The technical scheme 11 of the hollow slab bridge is further improved on the basis of any one of the technical schemes 3 to 10 of the hollow slab bridge: the girder steel structure is middle girder steel structure, and the hollow slab roof beam of middle girder steel structure both sides do respectively the girder steel adjacent beam, be in milk respectively between the girder steel adjacent beam of middle girder steel structure and both sides in order to form the hinge joint, the both sides web of middle girder steel structure is the hinge joint web, is equipped with respectively between the girder steel adjacent beam of every side bottom plate and corresponding side the connecting plate at the bottom of the pocket, connecting plate interval distribution on the left and right sides is at the bottom of two pockets.
The beneficial effects are that: the middle steel beam structural part and the steel beam adjacent beams on the two corresponding sides are respectively grouted to form hinge joints, so that the hollow plate beam with the damaged middle part can be conveniently replaced and maintained.
The technical scheme 12 of the hollow slab bridge is further improved on the basis of any one of the technical schemes 3 to 10 of the hollow slab bridge: girder steel structure for arrange in the tip girder steel structure of roof beam body tip, the side of tip girder steel structure has arranged girder steel adjacent beam, the orientation of tip girder steel structure one side web of girder steel adjacent beam do the hinge joint web.
The beneficial effects are that: the hollow slab beam with the damaged end part of the hollow slab bridge can be replaced conveniently by the end part steel beam structural part or the hollow slab bridge can be lengthened, and the maintenance period is shortened.
The technical scheme 13 of the hollow slab bridge is further improved on the basis of any one of the technical schemes 3 to 10 of the hollow slab bridge:
as a further improvement: the girder steel structure is followed span direction has arranged two at least about the roof beam body, is provided with at least one between two arbitrary girder steel structures girder steel adjacent beam, and all girder steel structures form at least one girder steel structure group, and every girder steel structure group includes two at least spaced apart arranged's girder steel structures, and arbitrary two adjacent girder steel structures pass through horizontal strengthening connecting piece fixed connection in the same girder steel structure group, and horizontal strengthening connecting piece is located the below of corresponding girder steel adjacent beam, and horizontal strengthening connecting piece extends or interval distribution in proper order along the fore-and-aft direction has a plurality ofly.
The beneficial effects are that: the transverse reinforcing connecting piece is adopted to reinforce the connecting strength of any two adjacent steel beam structural parts in the same steel beam structural part group, and the integrity and the structural stability of the hollow slab bridge can be effectively improved.
The technical scheme 14 of the hollow slab bridge is further improved on the basis of the technical scheme 13 of the hollow slab bridge: the left end and the right end of the transverse reinforcing connecting piece are correspondingly and fixedly connected with the corresponding side bottom plates of the two corresponding steel beam structural parts.
The beneficial effects are that: and the transverse reinforcing connecting piece is fixedly connected with the corresponding side bottom plates of the two steel beam structural parts, so that the connecting operation is convenient.
The technical scheme 15 of the hollow slab bridge is further improved on the basis of the technical scheme 14 of the hollow slab bridge: the left end and the right end of the transverse reinforcing connecting piece are correspondingly welded and connected with the upper side faces of the corresponding side bottom plates of the corresponding two steel beam structural parts.
The beneficial effects are that: adopt welded connection on the last side of corresponding side bottom plate, conveniently carry out welded connection.
Drawings
Fig. 1 is a schematic partial structural view of an embodiment 1 of a hollow slab bridge provided by the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the assembly of two hollow slab and steel beam structures of FIG. 1;
FIG. 4 is a schematic view of the assembly of the steel beam structure of FIG. 3 with the perforated steel bars and the pocket bottom connection plate;
FIG. 5 is an enlarged view taken at A in FIG. 4;
FIG. 6 is a left side schematic view of FIG. 4;
fig. 7 is a schematic partial structure diagram of an embodiment 2 of a hollow slab bridge provided by the present invention;
FIG. 8 is a schematic view of the mating structure of the end steel beam structure of FIG. 7 with the hollow slab beam on the corresponding side;
fig. 9 is a schematic partial structure view of an embodiment 3 of the hollow slab bridge provided by the present invention;
FIG. 10 is a front view of FIG. 9;
FIG. 11 is a schematic view of a right side partial structure of the left side steel beam structure of FIG. 10.
Description of reference numerals:
in fig. 1 to 6: 1-left web, 2-left pocket bottom connecting plate, 21-outer connecting part, 22-inner connecting part, 3-left bottom plate, 31-inner side plate, 32-outer side plate, 4-diaphragm plate, 5-right pocket bottom connecting plate, 6-transverse connecting plate, 7-right web, 8-right bottom plate, 100-hollow plate girder, 101-inner end, 200-hinge joint, 300-steel beam structural part, 400-perforated steel bar, 401-perforation, 602-staggered step, 603-hook structure and 700-concrete.
In fig. 7 and 8: 10-end steel beam structural part, 11-right side bottom plate, 12-bottom connecting plate, 121-inner connecting part, 122-outer connecting part, 13-protruding inner end, 14-hollow plate beam, 15-hinge joint and 16-cast-in-place layer.
In fig. 9 to 11: 90-left steel beam structural part, 91-middle hollow plate beam, 92-right bottom plate, 93-transverse reinforcing connecting part, 94-left bottom plate, 95-right steel beam structural part and 96-perforated steel bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
The present invention will be described in further detail with reference to examples.
The utility model provides an embodiment 1 of hollow slab bridge:
as shown in fig. 1 to 6, the hollow slab bridge mainly comprises a beam body, wherein the beam body comprises a plurality of hollow slab beams which are sequentially arranged along the left and right span directions of the beam body, each hollow slab beam extends along the left and right width directions of the beam body, the plurality of hollow slab beams are fixedly connected to form a support, concrete is poured on the hollow slab beams, cast-in-place paving is carried out, and then a pavement auxiliary structure is added. The connection mode of the adjacent hollow slab beams is the same as that of the adjacent hollow slab beams in the hollow slab bridge in the prior art, and the description is omitted here.
It should be noted that the hollow slab bridge according to the present embodiment is a hollow slab bridge in which a damaged hollow slab beam is replaced with a steel beam structural member 300 as an intermediate steel beam structural member, and therefore, in the present embodiment, only two hollow slab beams 100 on both sides and the steel beam structural member 300 in the middle are shown as shown in fig. 1.
Specifically, two hollow slab girders 100 are distributed at intervals in the left-right span direction of the hollow slab bridge to form mounting vacant positions, the steel girder structural member 300 is located at the mounting vacant positions, both the hollow slab girders are steel girder adjacent girders, a spacing seam is formed between the steel girder adjacent girders and the steel girder structural member 300, a hinge seam 200 is formed in the spacing seam by grouting, so that the steel girder adjacent girders and the middle steel girder structural member are fixedly connected, the length direction of the steel girder structural member 300 at this position extends in the front-rear direction, and it should be noted that the front-rear direction at this position is referred to with respect to the left-right direction.
The structure of the steel beam structural part is specifically shown in fig. 4 and 5, and comprises a left web plate 1, a right web plate 7, a transverse connecting plate 6, a transverse partition plate 4, a left bottom plate 3 and a right bottom plate 8, wherein the transverse connecting plate 6 and the transverse partition plate 4 are positioned between the two web plates as a middle lower connecting piece and are welded with the inner sides of the two web plates, the left bottom plate 3 is welded at the bottom of the left web plate 1, the right bottom plate 8 is welded at the bottom of the right web plate 7, and the two bottom plates are also welded with the middle transverse partition plate 4 to form the box beam type structural part.
Above-mentioned left side web 1 and right side web 7 are the wave form steel web, and transverse connection board 6 is located 4 tops of cross slab, and the left and right sides of transverse connection board 6 and the medial surface welded connection of both sides web because the web is wave form structure, for guaranteeing the laminating, the tip also designs into wave form structure about transverse connection board, coincide with the web structure, improves combining ability. In addition, the web plate adopts a corrugated structure, so that the bonding area between the web plate and the concrete 700 can be effectively increased, and the bonding performance is further improved.
The webs on the two sides are hinged webs, spacing joints are formed between the steel beam adjacent beams corresponding to the two sides, and the corresponding hinged joints 200 are formed by grouting between the hinged webs and the steel beam adjacent beams on the corresponding sides.
The transverse partition plates 4 are sequentially distributed at intervals in the front-back direction, the upper ends of the transverse partition plates 4 are connected with the transverse connecting plates 6 in a welding mode, the left end and the right end of each transverse partition plate are connected with the webs on the two sides in a welding mode, and the lower ends of the transverse partition plates are connected with the bottom plates on the two sides in a welding mode.
The transverse connecting plate 6 and the transverse partition plate 4 support the webs on the two sides as an intermediate connecting structure, and the transverse connecting plate 6 extends in the front-rear direction and forms a groove-shaped structure with the webs on the two sides so as to conveniently contain concrete.
For the convenience inside the maintenance and overhaul girder steel structure, left side bottom plate 3 and right side bottom plate 8 at this place design into the partition structure, form the maintenance interval between the two.
In fact, for the two side bottom plates, the two side bottom plates are connected with the corresponding side web plates in a vertical welding mode, and the two side bottom plates are both pocket bottom mounting bottom plates used for fixedly connecting the corresponding pocket bottom connecting plates. For the convenient pocket bottom connecting plate of connecting diaphragm 4 and corresponding side, to the left side bottom plate as the example, the left side bottom plate has the inside plate portion 31 that is located both sides web inboard in opposite directions and the outside plate portion 32 that is located both sides web outside mutually away from the other side, inside plate portion 31 and 4 bottom welded connections of diaphragm, outside plate portion 32 then through the pocket bottom connecting plate fixed connection of bolted connection structure and corresponding side, it is comparatively convenient to connect.
To girder steel structure 300, go into the back in the crack with it, need utilize the pocket bottom connecting plate with girder steel structure 300 and the hollow plate roof beam 100 fixed connection of both sides together, the connecting plate specifically includes connecting plate 2 at the bottom of left side pocket and connecting plate 5 at the bottom of the right side pocket at the bottom of the pocket of here, the structure of connecting plate is the same at the bottom of the both sides pocket, use connecting plate 2 at the bottom of the left side pocket to introduce here as the example, connecting plate 2 one side is passed through fastening bolt and 3 fixed connection of left side bottom plate at the bottom of the left side pocket, the opposite side then bonds fixedly with corresponding side hollow plate roof beam. After the girder connection member is inserted into the gap, the left bottom connection plate 2 is fixedly connected to the bottom of the left bottom plate 3 from below the bridge, and then the girder structure member 300 is lifted up, so that the left bottom connection plate 2 is fixedly bonded to the bottom of the corresponding side hollow plate girder 100. The two pockets of bottom connecting plates are distributed at intervals in the left and right directions, so that the cost can be reduced, the maintenance interval is also avoided on the other hand, and the blocking cannot be caused.
The two bottom connecting plates are utilized to block concrete at the bottom of the pocket, so that construction personnel can lay hinge joint reinforcing steel bars in hinge joints, and pour concrete 700 into the hinge joints to fix the steel beam structural member 300 and the two hollow plate girders 100 together.
In this embodiment, make the bottom of girder steel structure 300 outstanding downwards in the downside of two hollow slab beams 100 and arrange, it is concrete, the lower part of both sides bottom plate is outstanding downwards and arranges, correspondingly, the bottom connecting plate has inner connecting portion and outer connecting portion respectively at the bottom of the pocket of both sides, inner connecting portion and the corresponding side bottom plate fixed connection of girder steel structure bottom, outer connecting portion then with the downside fixed connection of the adjacent roof beam of corresponding side steel roof beam, corresponding to the structure that the bottom plate is outstanding downwards of corresponding side, make the relative outer connecting portion of inner connecting portion dislocation arrangement downwards, in order to form the dislocation step respectively on the bottom connecting plate at the bottom of the pocket of each side. The left pocket bottom connecting plate 2 is taken as an example for introduction: as shown in fig. 5, the left side pocket bottom connecting plate 2 includes an outer connecting portion 21 and an inner connecting portion 22 which are arranged in a staggered manner, the two connecting portions are connected by an inclined connecting plate portion, and the inner connecting portion 22 in the left side pocket bottom connecting plate 2 is arranged in a staggered manner downward with respect to the outer connecting portion 21 to form a staggered step on the left side pocket bottom connecting plate. The inner connecting portion 22 is fixedly connected to the outer plate portion 32 of the left bottom plate 3 by fastening bolts, and the outer connecting portion 21 is fixedly connected to the hollow plate beam on the corresponding side by bonding.
Moreover, the lower side surfaces of the hollow plate girders 100 are respectively provided with inner ends 101 which are arranged towards the steel girder structural member 300 in a protruding manner, the outer connecting parts are positioned at the outer sides of the inner ends 101 of the corresponding sides and further matched with the staggered steps on the pocket bottom connecting plate, so that the bottom of a hinge joint formed between the steel girder structural member and the steel girder adjacent girders of the corresponding sides is a hook-shaped structure 603, and the hook-shaped structure 603 can effectively improve the connecting strength of the steel girder structural member and the hollow plate girders 100.
After the two side bottom connecting plates are fixedly connected to the bottom of the steel beam structural member, the steel beam structural member is lifted, the two side bottom connecting plates are fixedly bonded with the two hollow plate girders, hinge joint steel bars are respectively paved in the space joints on the two sides, and grouting is performed in the space joints to form hinge joints, so that the steel beam structural member 300 and the hollow plate girders 100 on the two sides are fixed together.
The inner and outer connecting parts are connected by utilizing the inclined connecting plate part to form a staggered step, so that the mechanical property of a hook-shaped structure formed after grouting is better. In other embodiments, the middle connecting plate portion may also be a vertical plate structure, i.e., the vertical plate is arranged perpendicular to the inner and outer connecting portions.
In this embodiment, be equipped with perforation 401 respectively on the upper portion of both sides web, two rows of perforation 401 all extend along left right direction and follow the fore-and-aft direction interval distribution in proper order a plurality ofly, two rows of perforation are in the left right direction one-to-one in order to form the perforation pair, correspond respectively in each perforation pair and wear a perforation reinforcing bar 400 of dress, make perforation reinforcing bar 400 extend along left right direction and follow the fore-and-aft direction interval distribution in proper order a plurality ofly, the perforation reinforcing bar of here uses as key cast-in-place layer of mating formation reinforcing bar, both ends and the side cast-in-place layer of mating formation reinforcement or welded connection of corresponding side hollow slab roof beam top about it, in order to realize the fixed connection of new cast-in-place layer of mating formation reinforcing bar.
And then grouting the steel beam structural member 300 to form a concrete cast-in-place paving layer, wherein the concrete cast-in-place paving layer covers the steel beam structural member, the steel bars of the steel beam cast-in-place paving layer and the steel bars of the side cast-in-place paving layer to form a steel-concrete combined structure.
In fact, in order to improve the binding force between the steel beam structural member and the concrete, studs are respectively arranged on the outer sides of the webs on the two sides and the upper sides of the transverse connecting plates in a protruding mode, the studs are fixed on the side faces of the corresponding plates in a welding connection mode, and after concrete grouting and solidification, the studs can enter the concrete to improve the binding performance. Of course, the peg structures may be omitted in other embodiments if the bond strength is sufficient.
In the hollow slab bridge that this embodiment provided, the web of girder steel structure adopts the wave form steel sheet, and it has good shearing and tensile strength performance, and grout in the hinge joint between hollow slab beam and corresponding side web, can form the stability of restraint in order to strengthen the girder steel structure to, adopt the wave form steel sheet, also can effectively increase the area of contact with the concrete. And moreover, the pocket bottom connecting plate is matched with the concrete solidified at the staggered step, so that the integrity between the steel beam structural member and the hollow plate beam is enhanced, and the strength and the bearing capacity of the replaced rear axle beam are ensured.
The utility model provides an embodiment 2 of hollow slab bridge:
the difference from example 1 is mainly that: in example 1, only the individual damaged hollow slab beam in the middle of the beam body among the plurality of hollow slab beams is replaced, and in this example, as shown in fig. 7 and 8, the hollow slab beam is formed by replacing the hollow slab beam at the end of the bridge with the end steel beam structural member 10 after the hollow slab beam at the end of the bridge is damaged.
After the old end hollow plate girder is removed, as shown in fig. 7, an installation vacancy is formed on the left side of the hollow plate girder 14 at the edge, the end steel girder structural member 10 is arranged at the installation vacancy, one side web of the end steel girder structural member 10 is a hinge joint web, and during maintenance, a hinge joint 15 is formed by grouting between the hinge joint web and the corresponding side hollow plate girder 14, so that the end steel girder structural member and the original hollow plate girder can be fixedly assembled together.
Of course, the structure of the end steel beam structure here is basically the same as that of the steel beam structure in embodiment 1, and also includes a left web, a right web, a transverse connection plate, a lower connection member, a left bottom plate and a right bottom plate, which are different from the steel beam structure in embodiment 1 mainly in that: because the hinge 15 has been arranged in one side of tip girder steel structure 10, tip girder steel structure in this embodiment only has the bottom of the pocket connecting plate 12 in 11 bottoms of right side bottom plate through fastening bolt releasable connection, utilize bottom of the pocket connecting plate 12 bottom of the pocket shutoff concrete in order to form the hinge, the right side bottom plate of here uses as the bottom of the pocket mounting panel, the in-connection portion 121 of bottom of the pocket connecting plate 12 passes through fastening bolt and 11 fixed connection of right side bottom plate, the outer joint portion 122 of bottom of the pocket connecting plate 12 passes through the fixed mode of bonding and the downside fixed connection of hollow slab roof beam 14. And then grouting the top of the end part steel beam structural member to form a concrete cast-in-place paving layer, wherein the concrete cast-in-place paving layer comprises a cast-in-place layer 16, and covers the top steel beam structural member, steel bars of the steel beam cast-in-place paving layer and steel bars of a side cast-in-place paving layer to form a steel-concrete combined structure.
It should be noted that, because only the one-sided hinge joint is provided, the stud is also provided only on the right web of the end steel beam structure, the stud is not provided on the left side, and the pocket bottom connecting plate on the corresponding side is also omitted.
In fact, the end steel beam structural part can be used for replacing the hollow slab beam with the damaged end part, and the corresponding end hollow slab beam can be added to the end part of the old hollow slab bridge, so that the left span and the right span of the hollow slab bridge can be lengthened.
The utility model provides an embodiment 3 of hollow slab bridge:
the difference from example 1 is mainly that: in example 1, the individual damaged hollow plate girder located in the middle of the girder body among the plurality of hollow plate girders was replaced. In this embodiment, as shown in fig. 9 to 11, it is shown that two steel beam structural members, namely, a left steel beam structural member 90 and a right steel beam structural member 95, are arranged on the beam body of the hollow slab bridge at intervals along the left-right span direction of the beam body, a middle hollow slab beam 91 is arranged in the middle of the beam body, hinge joints are formed between the middle hollow slab beam 91 and the steel beam structural members on the two sides, and during construction, hinge joint reinforcing steel bars are inserted into the hinge joints and are grouted to fixedly connect the middle hollow slab beam and the steel beam structural members on the two sides.
It should be noted here that the left steel beam structural member 90 and the right steel beam structural member 95 are the same as the middle steel beam structural member in embodiment 1, and also include a left web, a right web, a transverse connecting plate, a lower connecting member, a left bottom plate, a right bottom plate, and two side bottom-pocket connecting plates, and no matter whether the left steel beam structural member 90 or the right steel beam structural member 95 is located between two hollow plate beams arranged at adjacent intervals, only the reinforced connection between the left steel beam structural member 90 and the right steel beam structural member 95 is mainly described here.
In fact, at left side girder steel structure 90 or the horizontal reinforcement connector 93 of fixedly connected with between the right side girder steel structure 95, horizontal reinforcement connector 93 specifically is the channel-section steel, the channel-section steel has a plurality ofly along the fore-and-aft length direction of corresponding girder steel structure spare interval arrangement in proper order, the left end of each horizontal reinforcement connector 93 and the side welded connection that goes up of the right side bottom plate 92 of left side girder steel structure 90, the right-hand member of each horizontal reinforcement connector 93 and the side welded connection that goes up of the left side bottom plate 94 of right side girder steel structure spare 95, in order to be in the same place two girder steel structure fixed connection that will be close, improve.
In this embodiment, the transverse reinforcing connecting member is specifically a channel steel, and in other embodiments, the transverse reinforcing connecting member may also be a rectangular pipe, a circular pipe, a reinforcing plate, or other structures. Of course, the transverse reinforcing connecting piece can also be a connecting plate extending along the front-back direction, the connecting plate can be fixedly connected with the bottom plates at the two sides through fastening bolts, namely the connecting plate can be pressed and assembled with the connecting plate at the bottom of the corresponding side pocket, and the connecting plate at the bottom of the corresponding side bottom plate, the connecting plate and the corresponding side pocket can be fixedly connected through the same fastening bolts.
Of course, the upper parts of the steel beam structural members at the two sides are penetrated with the perforated steel bars 96 to form the steel bar cast-in-situ pavement layer steel bars for being fixedly connected with the side cast-in-situ pavement layer steel bars above the side hollow slab beams.
Also, to improve structural strength, the perforated rebar 96 may cover the left steel beam structure, the middle hollow slab beam, and the right steel beam structure. And finally, grouting above the steel beam structural member, and arranging a cast-in-place layer and a paving layer.
In addition, it should be noted that, two steel beam structural members connected by the transverse reinforcing connecting member may form one steel beam structural member group, and in other embodiments, if three or more steel beam structural members are arranged at a short distance on the hollow slab bridge, two adjacent steel beam structural members are spaced to form one steel beam structural member group, and the two adjacent steel beam structural members are fixedly connected together by the transverse reinforcing connecting member, so as to improve the stability of the whole bridge. Moreover, the girder steel structure can be middle girder steel structure, also can be tip girder steel structure, generally speaking, can set up one or two hollow slab girders in the middle of arbitrary adjacent two girder steel structures in same girder steel structure group, and the distance is not fit for too far away.
The utility model provides an embodiment 4 of hollow slab bridge:
it differs from example 1 mainly in that: in embodiment 1, the bridge structure spare adopts the left side web, the right side web, transverse connection plate, cross slab and both sides bottom plate welded connection's mode, on the basis of guaranteeing bridge structure spare self intensity, in this embodiment, the bridge structure spare adopts the structure of frame construction with the shrouding, main body frame adopts channel-section steel welded fastening, both sides shrouding then is equivalent to the web, it then is equivalent to transverse connection plate to go up the shrouding, when putting into the steel beam structure spare the space joint, the both sides shrouding equally can form the hinge joint with the hollow slab beam of side, in order to conveniently lay reinforcing bar and grout.
At this moment, the top of both side shrouding is upwards extended equally to set up the perforation at the top of both sides shrouding, supply the perforation reinforcing bar to pass correspondingly.
On the basis of guaranteeing structural strength, for convenient equipment, the both sides shrouding in this embodiment adopts the flat board.
The utility model provides an embodiment 5 of hollow slab bridge:
it differs from example 1 mainly in that: in embodiment 1, adopt left side bottom plate, right side bottom plate correspondingly with the bottom of left side pocket connecting plate, the fixed assembly of connecting plate at the bottom of the right side pocket, both sides bottom plate is separated and is arranged, and the bottom of two pockets connecting plate is separated and is arranged, not only saves the cost, still can not influence the inside maintenance in later stage and overhauls. In this embodiment, the bottom plate is monolithic structure with the connecting plate at the bottom of the pocket, for guaranteeing normal maintenance, can arrange great trompil at the bottom of bottom plate and the pocket on the connecting plate, and this kind of mode can increase the cost.
The utility model provides an embodiment 6 of hollow slab bridge:
it differs from example 1 mainly in that: in embodiment 1, the bottom of girder steel structure spare is protruding downwards to the outer connecting portion of pocket bottom connecting plate outwards dislocation arrangement, so that the dislocation step on the pocket bottom connecting plate can form the holding tank with the downside of hollow slab roof beam, so that the grout forms concrete hook-shaped structure, improves bonding properties. On guaranteeing to block off hinge joint and grout joint strength's basis, in this embodiment, the bottom and the hollow plate roof beam bottom parallel and level of girder steel structure spare arrange basically, and the connecting plate also is dull and stereotyped structure at the bottom of the pocket, has cancelled the dislocation step.
The utility model provides an embodiment 7 of hollow slab bridge:
the difference from example 1 is mainly that: in embodiment 1, the pocket bottom connecting plate and the corresponding side mounting bottom plate are detachably connected by fastening bolts. In this embodiment, the mode fixed connection that connecting plate and corresponding side mounting plate can adopt welded connection at the bottom of the pocket, when adopting welded connection's mode, can carry out welded connection's construction operation under the bridge, can increase the construction degree of difficulty relatively.
The utility model provides a hollow slab bridge is the structure after the hollow slab beam replacement that will damage individuality, it is compared in the scheme that traditional adoption hollow slab beam changed, adopt the girder steel structure piece can be at mill's welding process shaping, it is comparatively convenient to process the installation, concrete maintenance time in the prefabricated hollow slab beam of mill has been avoided, the hollow slab beam of the quick replacement damage of being convenient for to restore fast and consolidate the bridge, maintenance cycle has effectively been shortened, the influence of traffic has been reduced, great spreading value has.
Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A hollow slab bridge comprising:
the beam body comprises a plurality of hollow plate beams which are sequentially arranged along the left-right span direction of the beam body, and each hollow plate beam extends along the left-right width direction of the beam body;
its characterized in that, the roof beam body still includes:
the steel beam structural part extends along the front and rear width directions of the beam body, grouting is performed between the steel beam structural part and the hollow plate beams on the corresponding sides to form hinge joints, and the hollow plate beams on the corresponding sides are defined as steel beam adjacent beams;
the pocket bottom connecting plate is fixedly connected with two adjacent steel beam structural parts and two adjacent steel beams, and is positioned below the adjacent steel beam so as to block concrete at the pocket bottom when a hinge joint is formed by grouting;
the steel beam cast-in-place pavement layer steel bars are connected with the upper part of the steel beam structural part and fixedly connected with the side cast-in-place pavement layer steel bars above the steel beam adjacent beam;
and the concrete cast-in-place pavement layer covers the steel beam structural part and the steel bars of the steel beam cast-in-place pavement layer to form a reinforced concrete combined structure.
2. The hollow slab bridge of claim 1, wherein the steel beam structure comprises:
the left web plate and the right web plate are arranged at intervals, at least one web plate is a hinge joint web plate, grouting is performed between the hinge joint web plate and the adjacent beam of the steel beam on the corresponding side to form a hinge joint, and a pocket bottom connecting structure is arranged at the bottom of the hinge joint web plate and is fixedly connected with the pocket bottom connecting plate;
the upper parts of the two side webs are provided with steel bar connecting structures which are connected with steel bars of the steel beam cast-in-place pavement layer;
the transverse connecting plate is positioned between the two side webs, is fixedly connected with the two side webs, and extends along the front-back direction to form a groove-shaped structure with the two side webs;
the lower connecting piece is positioned below the transverse connecting plate and fixedly connected with the webs on two sides, and the lower connecting piece extends along the front-back direction or is distributed with a plurality of connecting pieces at intervals along the front-back direction.
3. The hollow slab bridge of claim 2, wherein the left and right webs have left and right bottom plates fixed to the bottoms thereof, each bottom plate has an inner plate portion located on the inner side of the web and an outer plate portion located on the outer side of the web, the inner plate portion of each bottom plate is fixedly connected to the lower connecting member, the bottom plate is a bottom mounting plate, and the outer plate portion of the bottom mounting plate is provided with the bottom connecting structure.
4. The hollow slab bridge of claim 2, wherein the two side webs are corrugated steel webs.
5. The hollow slab bridge according to claim 2, characterized in that pegs project from the upper side of the transverse web and/or from the outer side of the hinge webs facing the respective hinge.
6. The hollow slab bridge of claim 2, wherein the steel beam cast-in-place pavement layer steel bars comprise perforated steel bars, the perforated steel bars extend in the left-right direction and are sequentially distributed at intervals in the front-back direction, the steel bar connection structures on the upper portions of the two side webs are perforated holes, the perforated steel bars are correspondingly arranged in the corresponding perforated holes in a penetrating manner, and the corresponding ends of the perforated steel bars are correspondingly fixedly connected with the side cast-in-place pavement layer steel bars on the corresponding sides.
7. The hollow slab bridge according to claim 3, wherein when the lower connecting members are spaced apart from each other in the front-rear direction, the lower connecting members are cross-plates extending in the up-down direction, and the left and right bottom plates are spaced apart from each other to form a maintenance space.
8. The hollow slab bridge of claim 3, wherein the pocket bottom connecting plate has an inner connecting portion fixedly connected to the outer plate portion of the pocket bottom mounting plate and an outer connecting portion fixedly connected to the lower side of the girder adjacent beam of the corresponding side, the inner connecting portion of the pocket bottom connecting plate being downwardly offset with respect to the outer connecting portion to form an offset step on the pocket bottom connecting plate.
9. The hollow slab bridge of claim 8, wherein the outer connecting portions of the bottom gusset are adhesively connected to the underside of the respective side girder-adjoining girders.
10. The hollow slab bridge of claim 8, wherein the underside of the steel beam adjacent beams at respective sides of the steel beam structure has projecting inner ends which project toward the respective steel beam structure, and the outer connection portions of the floor connecting plates are located outside the projecting inner ends of the respective side steel beam adjacent beams and engage with the offset steps on the floor connecting plates such that the bottoms of the hinge joints formed between the steel beam structure and the respective side steel beam adjacent beams are hook-shaped.
11. The hollow slab bridge of any one of claims 3 to 10, wherein the steel beam structure is an intermediate steel beam structure, the hollow slab beams on both sides of the intermediate steel beam structure are the steel beam adjacent beams, the intermediate steel beam structure and the steel beam adjacent beams on both sides are grouted to form the hinge joint, the webs on both sides of the intermediate steel beam structure are hinge joint webs, the bottom plate on each side and the steel beam adjacent beam on the corresponding side are provided with the bottom connecting plates, and the two bottom connecting plates are distributed at intervals in the left and right directions.
12. A hollow slab bridge according to any one of claims 3 to 10, wherein the steel beam structure is an end steel beam structure disposed at the end of the beam body, the steel beam abutment beam is disposed alongside the end steel beam structure, and a web of the end steel beam structure on the side facing the steel beam abutment beam is the hinge web.
13. A hollow slab bridge according to any one of claims 3 to 10, wherein at least two of the steel beam structural members are arranged along the left-right span direction of the beam body, at least one of the steel beam adjoining beams is arranged between any two of the steel beam structural members, all the steel beam structural members form at least one steel beam structural member group, each steel beam structural member group comprises at least two steel beam structural members arranged at intervals, any two adjacent steel beam structural members in the same steel beam structural member group are fixedly connected through a transverse reinforcing connecting member, the transverse reinforcing connecting member is located below the corresponding steel beam adjoining beam, and the transverse reinforcing connecting member extends along the front-back direction or is distributed at intervals in sequence.
14. The hollow slab bridge according to claim 13, wherein the left and right ends of the transverse reinforcing connecting member are fixedly connected to the respective side bottom plates of the respective two steel girder structural members, respectively.
15. The hollow slab bridge according to claim 14, wherein the left and right ends of the transverse reinforcing connecting member are welded to the upper side surfaces of the respective side bottom plates of the respective two steel girder structural members, respectively.
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| CN202022091057.0U CN213709190U (en) | 2020-09-22 | 2020-09-22 | Hollow slab bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021209078A3 (en) * | 2020-09-22 | 2021-12-02 | 郑州市交通规划勘察设计研究院 | Hollow slab bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021209078A3 (en) * | 2020-09-22 | 2021-12-02 | 郑州市交通规划勘察设计研究院 | Hollow slab bridge |
| CN114250718A (en) * | 2020-09-22 | 2022-03-29 | 郑州市交通规划勘察设计研究院 | Hollow slab bridge and maintenance method thereof |
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Address after: No.91, Longhai Middle Road, Erqi District, Zhengzhou City, Henan Province, 450000 Patentee after: Zhengzhou Transportation planning Survey, Design and Research Institute Co.,Ltd. Address before: No.91, Longhai Middle Road, Erqi District, Zhengzhou City, Henan Province, 450000 Patentee before: ZHENGZHOU COMMUNICATIONS PLANNING SURVEY & DESIGN INSTITUTE |