CN112663494B - Composite beam bridge deck and construction method thereof - Google Patents
Composite beam bridge deck and construction method thereof Download PDFInfo
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- CN112663494B CN112663494B CN202011417004.1A CN202011417004A CN112663494B CN 112663494 B CN112663494 B CN 112663494B CN 202011417004 A CN202011417004 A CN 202011417004A CN 112663494 B CN112663494 B CN 112663494B
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Abstract
The invention discloses a composite beam bridge deck and a construction method thereof, relates to the technical field of bridges, and mainly aims to avoid transverse through cracks at material interface joints and improve the durability and functionality of a composite beam bridge. The main technical scheme of the invention is as follows: the composite beam bridge deck comprises a first deck slab; the first bridge deck and the second bridge deck are mutually butted and form a seam, and the seam is a curve-shaped seam; the butt joint end of first decking and second decking all includes unsmooth alternative arrangement's dogtooth and recess, and the longitudinal length of every two adjacent dogteeth on first decking or the second decking is different, and dogtooth and recess are the rectangle, and the corner of dogtooth and recess is provided with convex chamfer respectively. The method is mainly used for preventing the material interface joint from cracking.
Description
Technical Field
The invention relates to the technical field of composite beam bridges, in particular to a composite beam bridge deck and a construction method thereof.
Background
The combined beam bridge is a combined structure bridge with a beam bridge span as a basic structure, and the bridge mainly adopts a group-nail precast slab continuous combined beam bridge, so that the structural secondary internal force and the concrete tensile stress caused by the concrete shrinkage creep effect are greatly reduced, and the cracking resistance of the concrete in the hogging moment area is greatly improved.
At present, a structural system with good continuity is adopted, the structural integrity and the structural rigidity are improved, the arrangement of expansion joints is reduced, the impact effect is reduced, and the bridge driving smoothness is improved, so that the bridge is one of important directions for developing small and medium span combined beam bridges to high performance. A large number of engineering practical experiences show that the bridge deck in the hogging moment area of the steel-concrete composite beam generally has the cracking problem. Therefore, the engineering industry introduces high-performance concrete materials such as UHPC (ultra high performance concrete), ECC (error correction code) and the like into the hogging moment area of the steel-concrete composite beam so as to solve the problem of bridge deck concrete cracking in the area.
However, the high-performance concrete and the common concrete have obvious difference in material performances such as deformation and tensile strength, and are affected by factors such as shrinkage, creep, ambient temperature, construction and the like, and the bridge deck material interface is easy to have diseases such as transverse bridge direction through cracks and the like, so that the bonding strength of the material interface is reduced, the problems of corrosion of reinforcing steel bars and steel beams and the like caused by cracking and water seepage are also caused, and the durability and the functionality of the continuous system type steel combined beam bridge are adversely affected.
Disclosure of Invention
The embodiment of the invention provides a combined beam bridge deck and a construction method thereof, and mainly aims to avoid transverse through cracks at a material interface joint and improve the durability and functionality of a combined beam bridge.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
in one aspect, an embodiment of the present invention provides a composite beam bridge deck, including: a first deck slab;
the first bridge deck and the second bridge deck are mutually butted and form a seam, and the seam is a curve-shaped seam;
the butt joint end of the first bridge deck plate and the second bridge deck plate comprises a plurality of convex teeth and grooves which are alternately arranged in a concave-convex mode, every two adjacent convex teeth are different in longitudinal length on the first bridge deck plate or the second bridge deck plate, the convex teeth and the grooves are rectangular, and arc-shaped chamfers are arranged at corners of the convex teeth and the grooves respectively.
Further, two of the teeth adjacent to any one of the plurality of teeth have equal longitudinal lengths.
Furthermore, a reinforcing layer is laid on the surface of the joint, and the material of the reinforcing layer is the same as that of the first bridge deck.
Further, the composite girder bridge deck further comprises:
the first longitudinal steel bars are longitudinally arranged in the first bridge deck and are divided into at least an upper layer and a lower layer;
many first horizontal reinforcing bars, many first horizontal reinforcing bar transversely arrange in the first decking, and be located many the outside of first vertical reinforcing bar, many first horizontal reinforcing bar divide into two-layer setting from top to bottom at least.
Further, the composite girder bridge deck further comprises:
the second longitudinal steel bars are longitudinally arranged in the second bridge deck and are divided into at least an upper layer and a lower layer;
many second horizontal reinforcing bars, many the second horizontal reinforcing bar transversely arrange in the second decking, and be located many the outside of the vertical reinforcing bar of second, many the second horizontal reinforcing bar divide into two-layer setting from top to bottom at least.
Further, the end of the first longitudinal reinforcement overlaps and is connected to the end of the second longitudinal reinforcement, and the connection portion of the first longitudinal reinforcement and the second longitudinal reinforcement is located in the second bridge deck.
Furthermore, the connecting parts of the first longitudinal steel bars and the second longitudinal steel bars are arranged in a staggered mode.
Further, the composite girder bridge deck further comprises:
the H-shaped steel is longitudinally connected to the bottom center positions of the first bridge deck and the second bridge deck through shear nails;
the width of the convex teeth corresponding to the H-shaped steel on the first bridge deck is larger than the width of the other convex teeth 3.
Further, the composite girder bridge deck further comprises:
and the concrete cast-in-place section is transversely connected to the center of the bottom of the first bridge deck and wraps the outer part of the H-shaped steel.
On the other hand, an embodiment of the present invention provides a construction method for a composite beam bridge deck, which is applied to the composite beam bridge deck, and includes:
a plurality of convex teeth and concave grooves which are arranged in a concave-convex alternating mode are formed at the butt joint ends of the first bridge deck and the second bridge deck respectively;
abutting the first and second deck boards to each other and forming a curvilinear seam located outside of the hogging moment section of the composite beam bridge;
every two adjacent convex teeth on the first bridge deck or the second bridge deck are different in longitudinal length, the convex teeth and the grooves are rectangular, and arc-shaped chamfers are arranged at corners of the convex teeth and the grooves respectively.
By means of the technical scheme, the invention at least has the following beneficial effects:
according to the combined beam bridge deck provided by the embodiment of the invention, the joint at the joint of the first bridge deck and the second bridge deck is set to be the curved joint, so that part of the second bridge deck can exist at the joint of the first bridge deck, and part of the first bridge deck can exist at the joint of the second bridge deck, and therefore, the tensile force of a material interface is dispersed, the tensile stress of concrete in a hogging moment area can be reasonably distributed, the force transmission effect between the first bridge deck and the second bridge deck is improved, the material interface is prevented from being cracked too early due to the action of factors such as hogging moment, shrinkage, creep and construction, the problem of transverse through cracks at the joint of the material interface is avoided, and the durability and the functionality of a combined beam bridge are improved. Moreover, the butt joint end of first decking and second decking all includes unsmooth alternative arrangement's the dogtooth and the recess that are the rectangle, and the longitudinal length of every two adjacent dogteeth is different, not only can further improve the biography power effect between first decking and the second decking, can also reduce the construction degree of difficulty. In addition, arc chamfers are arranged at the corners of the convex teeth and the grooves respectively, so that the phenomenon of stress concentration at the corners of the convex teeth and the grooves is avoided, and the force transmission effect between the first bridge deck plate and the second bridge deck plate is further improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a composite beam bridge deck according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a side surface of a composite beam bridge deck according to an embodiment of the present invention;
FIG. 3 is a schematic sectional view taken along the line A-A in FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 1;
fig. 5 is a schematic cross-sectional view taken along the line C-C in fig. 1.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically 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 preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1, the embodiment of the present invention provides a composite girder bridge deck, which includes a first bridge deck 1 and a second bridge deck 2, wherein the first bridge deck 1 and the second bridge deck 2 are connected to each other and form a seam 3, and the seam 3 may be a curved seam; the butt joint end of the first bridge deck plate 1 and the second bridge deck plate 2 can comprise a plurality of convex teeth 4 and grooves 5 which are alternately arranged in a concave-convex mode, the longitudinal length of every two adjacent convex teeth 4 on the first bridge deck plate 1 or the second bridge deck plate 2 is different, the convex teeth 4 and the grooves 5 are rectangular, and the corners of the convex teeth 4 and the grooves 5 are respectively provided with arc-shaped chamfers.
The first bridge deck 1 can be a high-performance concrete bridge deck, can be directly formed in a cast-in-place mode, and can be arranged in a hogging moment area of the combined beam, so that the capability of resisting the hogging moment action of the bridge deck is enhanced by using the characteristics of high tensile strength, high deformation resistance and the like of the high-performance concrete; and the second deck slab 2 may be a general concrete deck slab, which may be prefabricated in a factory in a batch manner or cast-in-place, and which is located at a section other than the hogging moment region of the composite beam.
According to the combined beam bridge deck provided by the embodiment of the invention, the joint 3 at the joint of the first bridge deck 1 and the second bridge deck 2 is set to be a curved joint, so that part of the second bridge deck 2 can exist at the joint 3 of the first bridge deck 1, and part of the first bridge deck 1 can exist at the joint 3 of the second bridge deck 2, and therefore, the tensile force of a material interface is dispersed, the tensile stress of concrete in a hogging moment area can be reasonably distributed, the force transfer effect between the first bridge deck 1 and the second bridge deck 2 is improved, the material interface is prevented from being cracked prematurely due to the action of negative bending moment, shrinkage, creep, construction and other factors, the problem of transverse through cracks at the joint 3 of the material interface is avoided, and the durability and the functionality of the combined beam bridge are improved. Moreover, the butt joint end of the first bridge deck plate 1 and the second bridge deck plate 2 comprises convex teeth 4 and grooves 5 which are arranged in a concave-convex alternating mode and are rectangular, and the longitudinal length of every two adjacent convex teeth 4 is different, so that the force transferring effect between the first bridge deck plate 1 and the second bridge deck plate 2 can be further improved, and the construction difficulty can be reduced. In addition, the corners of the convex teeth 4 and the grooves 5 are respectively provided with arc-shaped chamfers, so that the stress concentration phenomenon at the corners of the convex teeth 4 and the grooves 5 is avoided, and the force transmission effect between the first bridge deck plate 1 and the second bridge deck plate 2 is further improved.
It should be noted that the curved seam referred to in this embodiment is a curved seam other than a straight seam, for example, a wavy seam, a zigzag seam, or the like. Moreover, the curvilinear seam is disposed outside of the hogging moment section.
In an alternative embodiment, referring to FIG. 1, the longitudinal lengths of two teeth 4 adjacent to any tooth 4 of the plurality of teeth 4 may be equal, i.e., the longitudinal lengths of two teeth 4 on either side of any tooth 4 may be equal. In this embodiment, the lengths of the two adjacent teeth 4 of any one of the teeth 4 are set to be equal, so that the bridge deck presents a regular zigzag seam on the material interface, thereby not only ensuring the force transfer effect between the first bridge deck 1 and the second bridge deck 2, but also reducing the construction difficulty and reducing the engineering quantity.
In an alternative embodiment, see fig. 1, the surface of the joint 3 may be provided with a reinforcement layer 6, and the material of the reinforcement layer 6 may be the same as the material of the first deck slab 1, and may be high performance concrete. In particular, the reinforcement layer 6 may be laid on both the outer and inner surfaces of the bridge deck. In this embodiment, the reinforcing layer 6 made of the same material as the first deck plate 1 is laid on the surface of the joint 3, so that the force transmission effect between the first deck plate 1 and the second deck plate 2 can be further improved, the problems of premature cracking of a material interface and transverse through cracking can be better avoided, and the durability and functionality of the composite beam bridge can be further improved.
In an alternative embodiment, referring to fig. 1, 2 and 4, the composite girder bridge deck may further include a plurality of first longitudinal steel bars 7 and a plurality of first transverse steel bars 8, wherein the plurality of first longitudinal steel bars 7 are longitudinally arranged in the first bridge deck 1 and are arranged in at least two layers, one above the other; many first transverse reinforcement 8 transversely arrange in first decking 1, and are located the outside of many first longitudinal reinforcement 7, and many first transverse reinforcement 8 divide into upper and lower two-layer setting at least.
According to the above embodiment, since the bridge deck is mainly stressed in the transverse direction, the first transverse steel bars 8 can be conveniently stressed by arranging the first transverse steel bars 8 to be positioned outside the first longitudinal steel bars 7; moreover, many first longitudinal reinforcement 7 and many first horizontal reinforcing bar 8 are two-layer setting at least, have improved the rigidity of decking to the durability and the security of shaped steel combination beam bridge have further been improved.
In an alternative embodiment, referring to fig. 1, 2, 3 and 5, the composite girder bridge deck may further include a plurality of second longitudinal reinforcements 9 and a plurality of second transverse reinforcements 10, wherein the plurality of second longitudinal reinforcements 9 are longitudinally arranged in the second bridge deck 2 and are arranged in at least two layers; many second transverse reinforcement 10 transversely arrange in second decking 2, and are located the outside of many second longitudinal reinforcement 9, and many second transverse reinforcement 10 divide into upper and lower two-layer setting at least.
According to the embodiment, because the bridge deck is mainly stressed transversely, the transverse steel bars are arranged outside the longitudinal steel bars, so that the transverse steel bars can be stressed conveniently; moreover, the plurality of second longitudinal steel bars 9 and the plurality of second transverse steel bars 10 are at least two layers, so that the rigidity of the bridge deck is improved, and the durability and the safety of the section steel combined beam bridge are further improved.
In an alternative embodiment, referring to fig. 1, the end of the first longitudinal reinforcement 7 and the end of the second longitudinal reinforcement 9 may overlap and be connected to each other, and the connection point of the first longitudinal reinforcement 7 and the second longitudinal reinforcement 9, i.e. the welded connection 71 of the two, may be located in the second deck plate 2. Furthermore, overlapping sections of the first longitudinal reinforcement 7 and the second longitudinal reinforcement 9 may be located within the first and second deck slab 1, 2.
In the embodiment, the end parts of the first longitudinal steel bars 7 and the second longitudinal steel bars 9 are overlapped and connected with each other, so that the transmission effect of longitudinal steel bar force between the first bridge deck 1 and the second bridge deck 2 can be enhanced, the reasonable distribution of the tensile stress of the concrete in the hogging moment area is facilitated, the anti-cracking performance of the bridge deck in the hogging moment area is improved, and meanwhile, the design and construction difficulty of a steel bar structure is reduced; moreover, the connecting part of the first longitudinal steel bar 7 and the second longitudinal steel bar 9 is positioned in the second bridge deck 2, so that the connecting part of the first longitudinal steel bar 7 and the second longitudinal steel bar 9 can be positioned in a section outside the hogging moment area, the phenomenon of connection failure of the first longitudinal steel bar 7 and the second longitudinal steel bar 9 is avoided, and the connection reliability between the first longitudinal steel bar 7 and the second longitudinal steel bar is ensured.
In an optional embodiment, referring to fig. 1, the connection portions of the first longitudinal steel bars 7 and the second longitudinal steel bars 9 may be arranged in a staggered manner to disperse the stress applied to the connection portions of the first longitudinal steel bars 7 and the second longitudinal steel bars 9, so as to avoid the stress concentration phenomenon at the connection portions of the first longitudinal steel bars 7 and the second longitudinal steel bars 9, thereby avoiding the crack of the bridge deck at the connection portions of the steel bars, and further improving the durability and reliability of the bridge.
In an alternative embodiment, referring to fig. 1, the composite beam deck slab may further include an H-shaped steel 11, and the H-shaped steel 11 may be longitudinally connected to the bottom center positions of the first deck slab 1 and the second deck slab 2 by shear nails 12; furthermore, the width of the teeth 4 of the first decking 1 corresponding to the H-section steel 11 may be greater than the width of the other teeth 4. In the embodiment, the H-shaped steel 11, the shear nails 12 and other connecting pieces are arranged to form integral common stress with the bridge deck, so that the structural advantages of reducing the self weight of the superstructure by utilizing the self stress performance of the H-shaped steel 11 and the concrete are fully exerted.
The width of the convex teeth 4 corresponding to the H-shaped steel 11 on the first bridge deck 1 is larger than the width of other convex teeth 4, so that the bridge deck and the H-shaped steel 11 are combined more tightly and firmly, the force transmission effect of the bridge deck is improved, and the durability, functionality and reliability of the continuous system H-shaped steel 11 combined beam bridge deck are further improved.
In an alternative embodiment, referring to fig. 2 and 4, the composite girder bridge deck may further include a cast-in-place concrete section 13, wherein the cast-in-place concrete section 13 is transversely connected to the bottom center of the first bridge deck 1 and covers the outside of the H-section steel 11.
In the embodiment, the concrete cast-in-place section 13 is wrapped outside the H-shaped steel 11, which is equivalent to the fact that the H-shaped steel 11 is inserted into the concrete cast-in-place section 13, so that the concrete cast-in-place section 13 and the H-shaped steel 11 can form a steel-concrete combined structure to bear pressure together and relieve the local pressure state of the steel beam, thereby avoiding local instability of the steel beam, and simultaneously enhancing the transverse connection rigidity of each beam in the bridge deck slab, so that the force transfer of the bridge deck slab is more uniform; and, the cast-in-place section of concrete 13 parcel can make H shaped steel 11 isolated with the air at the outside of H shaped steel 11, prevents that its corrosion is serious, has guaranteed the performance of hot rolling shaped steel to extension structure service life reduces the structure and maintains the expense.
Specifically, the bottom of the concrete cast-in-place section 13 can be provided with a support 14, the support 14 is connected with the upper structure and the lower structure of the bridge, and the reaction force and the deformation received by the upper structure of the bridge are reliably transmitted to the lower structure of the bridge, so that the structure of the bridge is more stable, and the safety of the profile steel combined beam bridge is improved.
The embodiment of the invention also provides a construction method of the composite beam bridge deck, which is applied to the composite beam bridge deck and comprises the following steps:
a plurality of convex teeth and concave grooves which are arranged in a concave-convex alternating mode are formed at the butt joint ends of the first bridge deck and the second bridge deck respectively;
butt-joining the first and second deck boards to each other and forming a curvilinear seam located outside the hogging moment section of the composite beam bridge; the longitudinal lengths of every two adjacent convex teeth on the first bridge deck or the second bridge deck are different, the convex teeth and the grooves are rectangular, and arc-shaped chamfers are arranged at the corners of the convex teeth and the grooves respectively.
The construction method of the combined beam bridge deck provided by the embodiment of the invention comprises the steps of respectively forming a plurality of convex teeth and concave grooves which are alternately arranged in a concave-convex mode at the butt joint end of a first bridge deck and a second bridge deck; the joint formed by the mutual butt joint of the first bridge deck plate 1 and the second bridge deck plate 2 is a curve joint, so that part of the second bridge deck plate 2 can exist at the joint 3 of the first bridge deck plate 1, and part of the first bridge deck plate 1 can exist at the joint 3 of the second bridge deck plate 2, thereby dispersing the tensile force of a material interface, reasonably distributing the tensile stress of the concrete in a hogging moment area, improving the force transmission effect between the first bridge deck plate 1 and the second bridge deck plate 2, preventing the material interface from being cracked too early due to the action of negative bending moment, shrinkage, creep, construction and other factors, avoiding the problem of transverse through cracks at the joint 3 of the material interface, and improving the durability and functionality of the combined bridge. Moreover, the butt joint end of the first bridge deck plate 1 and the second bridge deck plate 2 comprises convex teeth 4 and grooves 5 which are arranged in a concave-convex alternating mode and are rectangular, and the longitudinal length of every two adjacent convex teeth 4 is different, so that the force transferring effect between the first bridge deck plate 1 and the second bridge deck plate 2 can be further improved, and the construction difficulty can be reduced. In addition, the corners of the convex teeth 4 and the grooves 5 are respectively provided with arc-shaped chamfers, so that the stress concentration phenomenon at the corners of the convex teeth 4 and the grooves 5 is avoided, and the force transmission effect between the first bridge deck plate 1 and the second bridge deck plate 2 is further improved.
It should be noted that the curved seam referred to in this embodiment is a curved seam other than a straight seam, for example, a wavy seam, a zigzag seam, or the like.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A composite beam deck comprising:
a first deck slab;
the first bridge deck and the second bridge deck are mutually butted and form a seam, and the seam is a curve-shaped seam;
the butt joint ends of the first bridge deck and the second bridge deck respectively comprise a plurality of convex teeth and grooves which are arranged in an alternating concave-convex mode; the longitudinal lengths of every two adjacent convex teeth on the first bridge deck or the second bridge deck are different, the convex teeth and the grooves are rectangular, and arc-shaped chamfers are arranged at corners of the convex teeth and the grooves respectively;
two of the teeth adjacent to any one of the plurality of teeth have equal longitudinal lengths.
2. The composite beam deck plate of claim 1,
and a reinforcing layer is laid on the surface of the joint, and the material of the reinforcing layer is the same as that of the first bridge deck.
3. The composite beam bridge deck of claim 1, further comprising:
the first longitudinal steel bars are longitudinally arranged in the first bridge deck and are divided into at least an upper layer and a lower layer;
many first horizontal reinforcing bars, many first horizontal reinforcing bar transversely arrange in the first decking, and be located many the outside of first vertical reinforcing bar, many first horizontal reinforcing bar divide into two-layer setting from top to bottom at least.
4. The composite beam bridge deck of claim 3, further comprising:
the second longitudinal steel bars are longitudinally arranged in the second bridge deck and are divided into at least an upper layer and a lower layer;
many second horizontal reinforcing bars, many the second horizontal reinforcing bar transversely arrange in the second decking, and be located many the outside of the vertical reinforcing bar of second, many the second horizontal reinforcing bar divide into two-layer setting from top to bottom at least.
5. The composite beam deck plate of claim 4,
the end parts of the first longitudinal steel bars and the second longitudinal steel bars are overlapped and connected with each other, and the connecting parts of the first longitudinal steel bars and the second longitudinal steel bars are positioned in the second bridge deck.
6. The composite beam deck plate of claim 5,
the connecting parts of the first longitudinal steel bars and the second longitudinal steel bars are arranged in a staggered mode.
7. The composite beam bridge deck of claim 1, further comprising:
the H-shaped steel is longitudinally connected to the bottom center positions of the first bridge deck and the second bridge deck through shear nails;
the width of the convex teeth corresponding to the H-shaped steel on the first bridge deck is larger than the width of other convex teeth.
8. The composite beam bridge deck of claim 7, further comprising:
and the concrete cast-in-place section is transversely connected to the center of the bottom of the first bridge deck and wraps the outer part of the H-shaped steel.
9. A construction method of a composite girder bridge deck applied to the composite girder bridge deck according to any one of claims 1 to 8, comprising:
a plurality of convex teeth and concave grooves which are arranged in a concave-convex alternating mode are formed at the butt joint ends of the first bridge deck and the second bridge deck respectively;
abutting the first and second deck boards to each other and forming a curvilinear seam located outside of the hogging moment section of the composite beam bridge;
the longitudinal lengths of every two adjacent convex teeth on the first bridge deck or the second bridge deck are different, the convex teeth and the grooves are rectangular, and arc-shaped chamfers are arranged at corners of the convex teeth and the grooves respectively;
two of the teeth adjacent to any one of the plurality of teeth have equal longitudinal lengths.
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| CN203296203U (en) * | 2013-04-23 | 2013-11-20 | 广州大学 | Reinforced-concrete-fitted seismic isolation node and fitted seismic isolation structure with reinforced-concrete-fitted seismic isolation node |
| CN203393847U (en) * | 2013-04-23 | 2014-01-15 | 广州大学 | Reinforced concrete assembly-type chock isolation node and assembly-type chock isolation structure with node |
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| JP2019002250A (en) * | 2017-06-20 | 2019-01-10 | 株式会社大林組 | Precast concrete floor slab connection structure and connection method |
| JP2019002251A (en) * | 2017-06-20 | 2019-01-10 | 株式会社大林組 | Precast concrete floor slab connection structure and connection method |
| JP2019183425A (en) * | 2018-04-03 | 2019-10-24 | 鹿島建設株式会社 | Junction structure and jointing method |
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| CN110541356A (en) * | 2019-09-05 | 2019-12-06 | 浙江交通职业技术学院 | manufacturing process of novel joint structure of steel-concrete composite beam bridge |
| CN111733697A (en) * | 2019-11-25 | 2020-10-02 | 湖南工业大学 | Prefabricated assembled composite slab structure |
| CN111677136A (en) * | 2020-07-03 | 2020-09-18 | 中冶建筑研究总院有限公司 | Wet-type connecting joint and connecting method for assembled floor slabs |
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