CN112211083A - Steel-concrete composite beam slab for small bridge and culvert and production method thereof - Google Patents
Steel-concrete composite beam slab for small bridge and culvert and production method thereof Download PDFInfo
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- CN112211083A CN112211083A CN202011244044.0A CN202011244044A CN112211083A CN 112211083 A CN112211083 A CN 112211083A CN 202011244044 A CN202011244044 A CN 202011244044A CN 112211083 A CN112211083 A CN 112211083A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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Abstract
The steel-concrete composite beam plate for the small-sized bridge and culvert and the production method thereof, the steel-concrete composite beam plate for the small-sized bridge and culvert comprises a steel beam plate and a concrete beam plate, the bottom of the concrete beam plate is provided with a trapezoidal groove, a connecting piece is pre-embedded in concrete above the trapezoidal groove, the connecting piece comprises a positioning seat, an anchoring seat, a movable locking block and a positioning pin rod, the connecting piece is anchored in the concrete beam plate through the anchoring seat, the movable locking block is arranged in the accommodating cavity of the connecting piece, the steel beam plate is bent to form a plurality of trapezoidal bosses matched with the trapezoidal grooves, the trapezoidal bosses are provided with convex parts, the concrete beam plate is propped against the steel beam plate below the trapezoidal bosses, the trapezoidal bosses are embedded into the trapezoidal grooves, the protruding portion is inserted into the positioning hole, the connecting bolt penetrates upwards from the connecting hole, the connecting bolt is screwed into the threaded hole of the movable locking block and drives the movable locking block to move downwards, and therefore the movable locking block presses the top end of the protruding portion. The steel-concrete composite beam plate has the advantages of simple structure and easy production and processing.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a steel-concrete composite beam slab for small bridges and culverts and a production method thereof.
Background
Bridges and culverts are the general names of bridges and culverts and are called by custom. Because of the advantages of convenient construction and relatively short construction period, the application of the steel-concrete composite beam plate structure to small bridges and culverts is increased year by year.
Most of the existing steel-concrete composite beam slab structures are formed by simply pouring concrete onto a steel beam slab, a necessary connecting structure is lacked between the concrete and the steel beam slab, the stability is low, the concrete and the steel bridge deck are connected insecurely due to different expansion coefficients of the concrete and the steel bridge deck, and when the temperature difference is large, relative sliding is easy to occur between the concrete and the steel bridge deck under the action of load, so that the strength is reduced, and other adverse effects are caused.
Chinese patent document CN104074126A discloses a steel-concrete composite beam plate structure of small-size bridges and culverts, and the bridge and culverts panel adopts steel-concrete composite structure in the literature, and the lower surface of steel bridge deck forms multiunit U type rib, is provided with the recess that matches with U type rib on the connecting seat, and the rethread is fixed to be set up at the support connecting piece and the reinforcing bar net formation grid structure of steel bridge deck upper surface, avoids producing between concrete and steel bridge deck from this and slides or throw off. The composite beam slab of the above structure has the following problems in the actual production process: the supporting and connecting pieces need to be welded on the upper surface of the steel bridge deck one by one after the reinforcing mesh is laid, and due to the blocking of the reinforcing mesh, the welding operation of the supporting and connecting pieces is inconvenient, concrete can be poured after the welding of the supporting and connecting pieces is finished, and the welding process consumes too long time, so that the production period of the whole bridge and culvert deck is longer.
Disclosure of Invention
One of the purposes of the invention is to provide a steel-concrete composite beam slab which has a simple structure and is easy to produce and process, and the steel-concrete composite beam slab with the structure is suitable for small bridges and culverts.
In order to achieve the purpose, the invention adopts the following technical scheme: a steel-concrete combined beam plate for a small bridge and culvert comprises a steel beam plate and a concrete beam plate arranged above the steel beam plate, wherein reinforcing steel bars are embedded in the concrete beam plate;
a plurality of trapezoidal grooves are arranged at the bottom of the concrete beam plate at intervals, a plurality of connecting pieces for fixedly connecting the concrete beam plate and the steel beam plate are pre-embedded in the concrete right above the trapezoidal grooves, the connecting piece comprises a positioning seat, an anchoring seat, a movable locking block and a positioning pin rod, the connecting piece is anchored in the concrete beam plate through the anchoring seat, the top end of the positioning seat is connected with the bottom end of the anchoring seat through threads and an accommodating cavity is formed in the positioning seat and the anchoring seat, the bottom end of the positioning seat is provided with a positioning hole for communicating the accommodating cavity with the outside, the movable locking block is arranged in the accommodating cavity, the size of the movable locking block is larger than that of the positioning hole, a threaded hole is formed in the center of the movable locking block, the outer side of the threaded hole is at least provided with two guide holes, the accommodating cavity is at least fixedly provided with two guide pins, and the guide pins vertically penetrate through the guide holes;
the steel beam plate is bent to form a plurality of trapezoidal bosses matched with the trapezoidal grooves, a plurality of protruding parts are arranged at the tops of the trapezoidal bosses, and connecting holes are formed in the centers of the protruding parts;
the concrete beam plate is abutted against the steel beam plate below the concrete beam plate, the trapezoidal boss is embedded into the trapezoidal groove, the protruding portion is inserted into the positioning hole, the connecting bolt penetrates through the connecting hole upwards, the connecting bolt is screwed into the threaded hole of the movable locking block, the movable locking block is driven to move downwards along the guide pin when the connecting bolt rotates, and then the movable locking block is enabled to press the top end of the protruding portion.
The positioning hole is a circular hole, the whole boss is cylindrical, a flange coaxial with the threaded hole is arranged on the outer side of the threaded hole, the flange protrudes downwards from the bottom end of the movable locking block, and a limiting hole matched with the boss is formed in the center of the flange;
the movable locking block is characterized in that the protruding portion is inserted into the positioning hole, a gap is formed between the outer peripheral surface of the protruding portion and the hole wall of the positioning hole, the width of the gap is matched with the wall thickness of the flange, in the process that the movable locking block moves downwards along the guide pin, the flange at the bottom end of the movable locking block is inserted into the gap between the protruding portion and the positioning hole, and meanwhile, the protruding portion is also inserted into the limiting hole in the center of the flange.
The convex part is formed by punching and drawing from the lower surface side to the upper surface side of the steel beam plate.
The top wall of the accommodating cavity is provided with a first guide pin mounting hole, the bottom wall of the accommodating cavity is provided with a second guide pin mounting hole, the top end of the guide pin is inserted into the first guide pin mounting hole, and the bottom end of the guide pin is inserted into the second guide pin mounting hole.
Preferably, the steel bars pre-buried in the concrete beam slab are rolled into a steel bar cage, and the shape of the bottom of the steel bar cage is matched with the shape formed by bending the steel beam slab.
In an embodiment of the present invention, the method for producing the steel-concrete composite girder for small bridges and culverts includes the following steps:
firstly, positioning the assembled connecting piece above the processed steel beam plate through a positioning hole and a protruding part;
secondly, connecting bolts penetrate upwards from the lower part of the steel beam plate through the connecting holes, the movable locking blocks are driven to move downwards by screwing the connecting bolts, so that the movable locking blocks abut against the top ends of the protruding parts, proper pre-tightening force is applied, and the connecting piece is fixed on the steel beam plate;
thirdly, arranging reinforcing steel bars above the steel beam plate and pouring concrete to form a concrete beam plate;
and fourthly, after the concrete of the concrete beam plate is completely solidified, further screwing the connecting bolt, so that the movable locking block further moves downwards and presses the top end of the protruding part, and the production of the steel-concrete combined beam plate is completed.
In another embodiment of the present invention, the method for producing the steel-concrete composite girder for small bridges and culverts includes the following steps:
firstly, manufacturing a steel beam plate;
secondly, manufacturing a concrete beam plate: the method comprises the following steps of taking a steel plate with the same shape as a steel beam plate as a bottom die, arranging a protruding part and a connecting hole on the bottom die, positioning and placing an assembled connecting piece on the bottom die through a positioning hole and the protruding part, then penetrating a connecting bolt upwards through the connecting hole from the lower part of the bottom die, driving a movable locking block to move downwards by screwing the connecting bolt, enabling the movable locking block to abut against the top end of the protruding part, applying proper pretightening force, fixing the connecting piece on the bottom die, then configuring reinforcing steel bars above the bottom die and pouring concrete, and loosening the die after the concrete is solidified to obtain a concrete beam plate;
and thirdly, assembling the steel beam plate and the concrete beam plate together through the connecting piece and the connecting bolt to obtain the steel-concrete combined beam plate.
In the steel-concrete combined beam plate for the small-sized bridge and culvert, the bottom of the concrete beam plate is provided with the trapezoidal groove matched with the trapezoidal boss on the steel beam plate, the freedom degree of the concrete beam plate relative to the steel beam plate in all horizontal directions is limited by combining the positioning seat embedded at the bottom of the trapezoidal groove and the protruding part arranged on the surface of the trapezoidal boss, and the movable locking block of the connecting piece embedded in the concrete beam plate tightly presses the protruding part of the steel beam plate, so that the concrete beam plate tightly adheres to the steel beam plate, and the condition that the concrete beam plate and the steel beam plate slide relatively is well avoided. Compared with the steel-concrete composite beam plate in the background technical document, the integral structure of the composite beam is simpler, particularly, the fixing and mounting operation of the connecting piece in the composite beam is very simple and convenient, the production and processing of the composite beam are easier, and compared with the one-by-one welding and supporting of the connecting piece in the background technical document, the time occupied by the mounting and fixing of the connecting piece is shorter (the connecting piece can be processed in advance), so that the production efficiency of the steel-concrete composite beam plate can be improved, and the production period can be shortened.
Drawings
Fig. 1 is a schematic perspective view of a steel-concrete composite beam plate.
Fig. 2 is a schematic bottom structure diagram of the steel-concrete composite beam slab.
Fig. 3 is a schematic cross-sectional structure diagram of the steel-concrete composite beam plate.
Fig. 4 is a schematic perspective view of a steel beam plate.
Fig. 5 is a perspective view of a concrete beam slab.
Fig. 6 is an exploded view of the connector.
Fig. 7 is a schematic view showing the overall structure after the connecting member is fixed to the steel girder plate.
Fig. 8 is a schematic perspective view of the positioning seat in the connecting member.
Fig. 9 is a perspective view of the anchoring base in the connecting element.
Fig. 10 is a schematic perspective view of the movable locking block in the connector.
Fig. 11 is a perspective view of the guide pin in the connector.
Fig. 12 is a partially enlarged view of a portion a in fig. 3.
Fig. 13 is a partially enlarged view of a portion B in fig. 3.
Fig. 14 is a partially enlarged view of a portion C in fig. 3.
In the figure:
1-steel beam plate 2-concrete beam plate 3-connecting piece
4-connecting bolt 1 a-trapezoidal boss 1 b-convex part
2a trapezoidal groove 3a positioning seat 3b anchoring seat
3 c-movable locking block 3 d-guide pin 3 e-containing cavity
3a1 positioning hole 3c1 threaded hole 3c2 guide hole
3c3 flange 3c4 positioning hole 3e1 first guide pin mounting hole
3e 2-second guide pin mounting hole.
Detailed Description
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
For the understanding of those skilled in the art, the present invention will be further described with reference to the following 2 examples and the accompanying drawings, which are not intended to limit the present invention.
Example 1
Fig. 1 to 3 show an overall structure of a steel-concrete composite beam panel according to the present embodiment, which includes a steel beam panel 1 and a concrete beam panel 2 disposed above the steel beam panel, wherein reinforcing bars (the reinforcing bars are not shown in the drawings) are embedded in the concrete beam panel 2. Of course, the reinforcing steel bars pre-embedded in the concrete beam plate 2 can also be bundled into a reinforcing cage, and the shape of the bottom of the reinforcing cage is preferably matched with the shape formed by bending the steel beam plate 1. It should be noted that although the connection seats of the steel-concrete composite beam are not shown in the above drawings, it should be understood by those skilled in the art that the steel-concrete composite beam in the present embodiment may be provided with the connection seats at both ends thereof like the steel-concrete composite beam in the prior art in order to facilitate the installation construction of the steel-concrete composite beam in the actual production application.
Specifically, as shown in fig. 5, a plurality of trapezoidal grooves 2a are arranged at intervals at the bottom of the concrete beam plate 2, and a plurality of connecting members 3 for fixedly connecting the concrete beam plate 2 and the steel beam plate 1 are embedded in the concrete right above the trapezoidal grooves 2 a.
Wherein, as shown in fig. 6 and fig. 8-11, the connecting member 3 includes a positioning seat 3a, an anchoring seat 3b, a movable locking block 3c and a guide pin 3d, specifically, the connecting member 3 is anchored in the concrete beam slab 2 through the anchoring seat 3b, the top end of the positioning seat 3a and the bottom end of the anchoring seat 3b are connected through a screw thread and form a containing cavity 3e together inside the two, a positioning hole 3a1 for communicating the containing cavity 3e with the outside is opened at the bottom end of the positioning seat 3a, the movable locking block 3c is disposed in the containing cavity 3e, in order to prevent the movable locking block 3c from falling out of the containing cavity 3e, the size of the movable locking block 3c should be larger than that of the positioning hole 3a1, in addition, as shown in fig. 10, a threaded hole 3c1 is opened at the center of the movable locking block 3c, at least two guide holes 3c2 are opened at the outer side of the threaded hole 3c1, at least two guide pins 3d are fixedly disposed in the receiving chamber 3e, and the guide pins 3d vertically pass through the guide holes 3c 2. The guide pin 3d may be attached and fixed by, for example: a first guide pin mounting hole 3e1 is formed in the top wall of the accommodating cavity 3e (i.e., a first guide pin mounting hole 3e1 is formed in the anchor seat 3b as shown in fig. 9), a second guide pin mounting hole 3e2 is formed in the bottom wall of the accommodating cavity 3e (i.e., a second guide pin mounting hole 3e2 is formed in the positioning seat 3a as shown in fig. 8), the top end of the guide pin 3d is inserted into the first guide pin mounting hole 3e1, and the bottom end thereof is inserted into the second guide pin mounting hole 3e 2.
As shown in fig. 4, the steel beam plate 1 is bent to form a plurality of trapezoidal bosses 1a matching the trapezoidal grooves 2a, a plurality of protrusions 1b are disposed on the top of the trapezoidal bosses 1a, a connecting hole (not shown in the figure) is disposed in the center of each protrusion 1b, and the protrusions 1b can be formed by punching and stretching from one side of the lower surface of the steel beam plate 1 to one side of the upper surface thereof.
In the steel-concrete composite beam plate shown in fig. 1-3, the concrete beam plate 2 abuts against the steel beam plate 1 below the concrete beam plate, the trapezoidal boss 1a is embedded into the trapezoidal groove 2a, and the protrusion 1b is also inserted into the positioning hole 3a1, as shown in fig. 12, the connecting bolt 4 is inserted upwards from the connecting hole, and as shown in fig. 13, the connecting bolt 4 is screwed into the threaded hole 3c1 of the movable locking block 3c, and when the connecting bolt 4 rotates, the movable locking block 3c is driven to move downwards along the guide pin 3d, so that the movable locking block 3c is pressed against the top end of the protrusion 1b as shown in fig. 14.
In above-mentioned steel-concrete composite beam board, through set up 2 bottoms of concrete beam board with 1a assorted trapezoidal recess of trapezoidal boss 2a on the steel beam board 1, combine pre-buried positioning seat 3a at trapezoidal recess 2a tank bottom and set up the bellying 1b on 1a surface of trapezoidal boss, restricted the degree of freedom of concrete beam board 2 for steel beam board 1 in all horizontal directions together, in addition the activity locking block 2c of the connecting piece 3 of pre-buried in concrete beam board 2 tightly pushes down 1b of steel beam board 1, make concrete beam board 2 hug closely steel beam board 1, thereby can avoid concrete beam board 2 and steel beam board 1 to take place the condition of relative slip well. Compared with the steel-concrete composite beam plate in the background technical document, the integral structure of the composite beam in the embodiment is simpler, and particularly, the fixing and mounting operations of the connecting piece 3 in the composite beam are very simple and convenient, the production and processing of the composite beam are easier, and compared with the one-by-one welding supporting connecting piece in the background technical document, the time occupied by the mounting and fixing of the connecting piece 3 in the embodiment is shorter (the connecting piece 3 can be processed in advance), so that the production efficiency of the steel-concrete composite beam plate can be improved, and the production period can be shortened.
As a modification of the above embodiment, it is preferable that the positioning hole 3a1 is designed as a circular hole, the boss 1b is formed as a cylindrical shape as a whole, a flange 3c3 coaxial with the screw hole 3c1 is designed on the outer side of the screw hole 3c1, the flange 3c3 protrudes downward from the bottom end of the movable lock block 3c, and a stopper hole 3c4 matching with the boss 1b is formed at the center thereof. In addition, the dimensions of the boss 1b and the positioning hole 3a1 are adjusted so that after the boss 1b is inserted into the positioning hole 3a1, a gap is formed between the outer peripheral surface of the boss and the wall of the positioning hole 3a1, and the width of the gap should be matched with the wall thickness of the flange 3c3, so that during the process that the movable locking block 3c moves down along the guide pin 3d, the flange 3c3 at the bottom end of the movable locking block 3c is inserted into the gap between the boss 1b and the positioning hole 3a1, and the boss 1b is also inserted into the limiting hole 3c4 at the center of the flange 3c3, thereby further improving the shearing strength of the joint between the positioning seat and the boss 1 b.
The steel-concrete composite beam plate can be produced on a large scale in the following way:
first, the assembled connector 3 is positioned and placed above the machined steel beam plate 1 through the positioning hole 3a1 and the boss portion 1 b.
Then, a connecting bolt 4 is upwardly penetrated through the connecting hole from the lower side of the steel beam plate 1, the movable locking block 3c is driven to move downwards by screwing the connecting bolt 4, so that the movable locking block 3c abuts against the top end of the protruding portion 1b, and appropriate pre-tightening force is applied, and thus the connecting piece 3 is fixed on the steel beam plate 1 as shown in fig. 7.
And then arranging reinforcing steel bars above the steel beam plate 1 and pouring concrete to form a concrete beam plate 2.
And finally, after the concrete of the concrete beam plate 2 is completely solidified, further screwing the connecting bolt 4 to enable the movable locking block 3c to press the top end of the protruding part 1b, and thus, the production of the steel-concrete combined beam plate is completed.
Example 2
The overall structure of the steel-concrete composite beam slab in this embodiment is similar to that in embodiment 1, except that the steel-concrete composite beam in this embodiment is of an assembled structure, and the manner of producing the steel-concrete composite beam slab is different from that in embodiment 1.
Specifically, the production process of the steel-concrete composite beam slab in the embodiment is as follows:
first, the beam plate 1 is completed.
Next, the concrete beam panel 2 is completed. The specific operation mode is as follows: use the steel sheet the same with 1 shape of girder steel board as the die block, also set up bellying 1b and connecting hole on the die block, place the connecting piece 3 that will assemble on the die block through locating hole 3a1 and bellying 1b location, then wear to establish connecting bolt 4 up through the connecting hole from the die block below, drive activity latch segment 3c down and move through revolving wrong connecting bolt 4, make activity latch segment 3c support and lean on the top of bellying 1b, and apply appropriate pretightning force, fix connecting piece 3 on the die block from this, later at die block top configuration reinforcing bar and pour the concrete, treat that the mould loosens after the concrete solidifies, obtain concrete beam board 2.
And finally, assembling the steel beam plate 1 and the concrete beam plate 2 together through a connecting piece 3 and a connecting bolt 4 to obtain the steel-concrete combined beam plate.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (7)
1. A steel and concrete combination beam slab for small-size bridge and culvert, including steel beam slab (1) and concrete beam slab (2) of configuration in the steel beam slab top, the reinforcing bar has been buried underground in concrete beam slab (2), its characterized in that:
the concrete beam slab is characterized in that a plurality of trapezoidal grooves (2 a) are arranged at intervals at the bottom of the concrete beam slab (2), a plurality of connecting pieces (3) for fixedly connecting the concrete beam slab (2) and the steel beam slab (1) are pre-buried in concrete right above the trapezoidal grooves (2 a), each connecting piece (3) comprises a positioning seat (3 a), an anchoring seat (3 b), a movable locking block (3 c) and a guide pin (3 d), each connecting piece (3) is anchored in the concrete beam slab (2) through the corresponding anchoring seat (3 b), the top end of each positioning seat (3 a) is in threaded connection with the bottom end of each anchoring seat (3 b) to form an accommodating cavity (3 e) inside the corresponding positioning seat and the anchoring seat, a positioning hole (3 a 1) for communicating the accommodating cavity (3 e) with the outside is formed in the bottom end of each positioning seat (3 a), each movable locking block (3 c) is arranged in the corresponding accommodating cavity (3 e), the size of the movable locking block (3 c) is larger than that of the positioning hole (3 a 1), a threaded hole (3 c 1) is formed in the center of the movable locking block, at least two guide holes (3 c 2) are formed in the outer side of the threaded hole (3 c 1), at least two guide pins (3 d) are fixedly arranged in the accommodating cavity (3 e), and the guide pins (3 d) vertically penetrate through the guide holes (3 c 2);
the steel beam plate (1) is bent to form a plurality of trapezoidal bosses (1 a) matched with the trapezoidal grooves (2 a), a plurality of protrusions (1 b) are arranged at the tops of the trapezoidal bosses (1 a), and connecting holes are formed in the centers of the protrusions (1 b);
concrete beam board (2) support by on the steel beam board (1) of its below, trapezoidal boss (1 a) embedding trapezoidal recess (2 a), in bellying (1 b) inserts locating hole (3 a 1), follow up wear to be equipped with connecting bolt (4) in the connecting hole, in connecting bolt (4) are twisted to screw hole (3 c 1) of activity latch segment (3 c) soon, drive activity latch segment (3 c) and down remove along guide pin (3 d) when connecting bolt (4) rotate, and then make activity latch segment (3 c) sticiss the top of bellying (1 b).
2. The steel-concrete composite beam slab for small bridges and culverts according to claim 1, wherein: the positioning hole (3 a 1) is a round hole, the boss (1 b) is integrally cylindrical, a flange (3 c 3) coaxial with the threaded hole (3 c 1) is arranged on the outer side of the threaded hole (3 c 1), the flange (3 c 3) protrudes downwards from the bottom end of the movable locking block (3 c), and a limiting hole (3 c 4) matched with the boss (1 b) is formed in the center of the flange;
the bulge (1 b) is inserted into the positioning hole (3 a 1) and a gap is formed between the outer peripheral surface of the bulge and the hole wall of the positioning hole (3 a 1), the width of the gap is matched with the wall thickness of the flange (3 c 3), in the process that the movable locking block (3 c) moves downwards along the guide pin (3 d), the flange (3 c 3) at the bottom end of the movable locking block (3 c) is inserted into the gap between the bulge (1 b) and the positioning hole (3 a 1), and meanwhile, the bulge (1 b) is also inserted into the limiting hole (3 c 4) in the center of the flange (3 c 3).
3. The steel-concrete composite girder for small bridges and culverts according to claim 1 or 2, wherein: the convex part (1 b) is formed by punching and drawing from the lower surface side of the steel beam plate (1) to the upper surface side thereof.
4. The steel-concrete composite girder for small bridges and culverts according to any one of claims 1 to 3, wherein: the top wall of the accommodating cavity (3 e) is provided with a first guide pin mounting hole (3 e 1), the bottom wall of the accommodating cavity (3 e) is provided with a second guide pin mounting hole (3 e 2), the top end of the guide pin (3 d) is inserted into the first guide pin mounting hole (3 e 1), and the bottom end of the guide pin (3 d) is inserted into the second guide pin mounting hole (3 e 2).
5. The steel-concrete composite girder for small bridges and culverts according to any one of claims 1 to 3, wherein: the concrete beam slab (2) is characterized in that a steel reinforcement cage is formed by binding pre-buried steel reinforcements, and the shape of the bottom of the steel reinforcement cage is matched with the shape formed by bending the steel beam slab (1).
6. The method for producing a steel-concrete composite beam panel for small bridges and culverts as claimed in any one of claims 1 to 5, comprising the steps of:
firstly, positioning and placing the assembled connecting piece (3) above the processed steel beam plate (1) through a positioning hole (3 a 1) and a boss (1 b);
secondly, a connecting bolt (4) penetrates upwards from the lower part of the steel beam plate (1) through a connecting hole, the connecting bolt (4) is screwed to drive the movable locking block (3 c) to move downwards, so that the movable locking block (3 c) abuts against the top end of the protruding part (1 b), and appropriate pre-tightening force is applied, and therefore the connecting piece (3) is fixed on the steel beam plate (1);
thirdly, arranging reinforcing steel bars above the steel beam plate (1) and pouring concrete to form a concrete beam plate (2);
and fourthly, after the concrete of the concrete beam plate (2) is completely solidified, further screwing the connecting bolt (4) to enable the movable locking block (3 c) to press the top end of the bulge part (1 b), and finishing the production of the steel-concrete combined beam plate.
7. The method for producing a steel-concrete composite beam panel for small bridges and culverts as claimed in any one of claims 1 to 5, comprising the steps of:
firstly, manufacturing a steel beam plate (1);
secondly, manufacturing the concrete beam plate (2): the method comprises the following steps of taking a steel plate with the same shape as a steel beam plate (1) as a bottom die, arranging a protruding portion (1 b) and a connecting hole on the bottom die, positioning and placing an assembled connecting piece (3) on the bottom die through a positioning hole (3 a 1) and the protruding portion (1 b), penetrating a connecting bolt (4) upwards through the connecting hole from the lower side of the bottom die, driving a movable locking block (3 c) to move downwards by screwing the connecting bolt (4), enabling the movable locking block (3 c) to abut against the top end of the protruding portion (1 b), applying appropriate pre-tightening force, fixing the connecting piece (3) on the bottom die, configuring reinforcing steel bars above the bottom die and pouring concrete, and loosening the die after the concrete is solidified to obtain the concrete beam plate (2);
and thirdly, assembling the steel beam plate (1) and the concrete beam plate (2) together through a connecting piece (3) and a connecting bolt (4) to obtain the steel-concrete combined beam plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011244044.0A CN112211083B (en) | 2020-11-10 | 2020-11-10 | Steel-concrete composite beam slab for small bridge and culvert and production method thereof |
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| CN202011244044.0A CN112211083B (en) | 2020-11-10 | 2020-11-10 | Steel-concrete composite beam slab for small bridge and culvert and production method thereof |
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| CN112211083B CN112211083B (en) | 2022-04-08 |
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| CN1067715A (en) * | 1991-06-13 | 1993-01-06 | 廖启端 | Combined self-lock bolt |
| JPH0586653A (en) * | 1991-09-30 | 1993-04-06 | Takenaka Komuten Co Ltd | Structure and method for jointing precast member and steel frame member |
| JPH0913317A (en) * | 1995-07-03 | 1997-01-14 | Kawaju Koji Kk | Earthquake resistant connecting device of bridge girder |
| JP2001165138A (en) * | 1999-12-08 | 2001-06-19 | Nippon Doboku Shizai Kk | Rust preventing device for lock bolt |
| JP2006299750A (en) * | 2005-04-25 | 2006-11-02 | Nippon Sharyo Seizo Kaisha Ltd | Drain bolt-nut and stagnant water preventive drain structure of steel box using this drain bolt-nut |
| KR20090008070A (en) * | 2007-07-16 | 2009-01-21 | 아주대학교산학협력단 | A superstructure of a prefabricated bridge |
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| CN104131652A (en) * | 2014-07-17 | 2014-11-05 | 湖南大学 | Fabricated RPC-steel-concrete hybrid beam structure |
| CN106400666A (en) * | 2016-09-12 | 2017-02-15 | 东南大学 | Prestressed concrete-corrugated web steel box connecting beam hybrid beam structural system |
| CN106906749A (en) * | 2017-03-09 | 2017-06-30 | 河南省交通规划设计研究院股份有限公司 | The construction method of full assembled steel-concrete combined structure box beam |
| CN208455444U (en) * | 2017-12-29 | 2019-02-01 | 上海市政交通设计研究院有限公司 | A kind of insert fenestration Lamb wave shape steel web combination beam connector |
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| CN111692185A (en) * | 2020-06-02 | 2020-09-22 | 欧永恒 | Nut capable of displaying pressure value |
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| CN112211083B (en) | 2022-04-08 |
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