CN112695616B - Anti-seismic connection structure for assembled steel-concrete composite beam - Google Patents
Anti-seismic connection structure for assembled steel-concrete composite beam Download PDFInfo
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- CN112695616B CN112695616B CN202110153236.9A CN202110153236A CN112695616B CN 112695616 B CN112695616 B CN 112695616B CN 202110153236 A CN202110153236 A CN 202110153236A CN 112695616 B CN112695616 B CN 112695616B
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- Prior art keywords
- connecting ridge
- bridge deck
- concrete bridge
- ridge
- concrete
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- 239000004567 concrete Substances 0.000 title claims abstract description 63
- 239000002131 composite material Substances 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 238000009417 prefabrication Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000011150 reinforced concrete Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000000149 penetrating effect Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anti-seismic connection structure for an assembled steel-concrete composite beam, which comprises a steel box beam and a concrete bridge deck, wherein two flange plates of the steel box beam are respectively provided with a first connecting ridge; a plurality of female members are arranged on the upper end face of the first connecting ridge; two grooves are formed in the lower side face of the concrete bridge deck; the bottom of the groove is provided with a second connecting ridge, and the lower end surface of the second connecting ridge is provided with a plurality of male parts; when the concrete bridge deck is assembled, the concrete bridge deck is placed on the flange plate of the steel box girder, the lower end face of the concrete bridge deck is contacted with the upper end face of the flange plate, and a plurality of male pieces are inserted into a plurality of female pieces in a one-to-one correspondence manner; the beneficial technical effects of the invention are as follows: the anti-seismic connection structure for the assembled steel-concrete composite beam is convenient to construct, the shear bearing capacity of the structure can be effectively improved, and the seismic energy can be absorbed by sliding after the binding body is damaged.
Description
Technical Field
The invention relates to a bridge structure, in particular to an anti-seismic connection structure for an assembled steel-concrete composite beam.
Background
In the prior art, a concrete bridge deck and a steel box girder are connected into a whole through a shear connector to participate in the stress process of the structure. The common shear connectors mainly comprise four types of steel bar connectors, profile steel connectors, PBL connectors and bolt connectors; wherein the peg connectors and the PBL connectors are currently most widely used in engineering; the PBL connecting piece resists longitudinal shearing force mainly through the concrete tenons and the penetrating steel bars in the holes, and the penetrating steel bars arranged in the holes can greatly improve the ultimate bearing capacity of the connecting piece, but because the penetrating steel bars are required to be arranged in the holes, great inconvenience is brought to construction, and the manufacturing process is time-consuming and labor-consuming; the peg connecting piece needs to be reserved with holes for pouring concrete, so that shear force transmission between a steel-concrete interface is discontinuous, a splitting area exists in a concrete slab, the amount of concrete poured in shear slots is small, the number of shear slots is large, and quality is not easy to guarantee; the bridge deck has poor integrity, meanwhile, the quality of wet joint concrete is not easy to ensure, and the interface of new and old concrete is easy to crack; in summary, the existing connection mode needs more concrete cast-in-situ working procedures, has longer site construction period and is not beneficial to the rapid construction of the steel-concrete combined structure.
The Chinese patent No. CN201510618404.1 proposes a novel concrete slab with a channel at the bottom, and a novel self-locking steel-concrete connecting piece can be formed by arranging a channel matched with a steel beam at the bottom end of a concrete bridge deck.
Chinese patent No. CN201620452745.6 proposes a perforated plate connecting piece with a shoe-shaped slot, a steel beam and a positive steel plate, wherein one side of the perforated plate connecting piece is a straight profile, and a convex connector and a concave slot are repeatedly arranged on the other side of the perforated plate connecting piece, and the concave slot is a shoe-shaped slot; the shape of the convex connector is identical to the shape and the size of the concave slotted hole after rotating 180 degrees; two perforated plate connecting pieces with the same size, after one perforated plate connecting piece rotates 180 degrees, a convex connector and a concave slotted hole of the perforated plate connecting piece are just embedded and butted, and are spliced and buckled into a complete slat; although the utility model effectively solves the process of inserting and arranging the reinforcing steel bars and reduces the input of manpower, the utility model still does not get rid of the construction process of arranging the reinforcing steel bars on the connecting pieces and the cast-in-place concrete bridge deck, and is still not applicable to bridges needing quick construction.
From the present circumstances, it is necessary to improve the connection mode between the concrete bridge deck and the steel box girder, so that the construction process can be simplified and the construction period can be shortened under the condition of meeting the requirement of high shear bearing capacity.
Disclosure of Invention
Aiming at the problems in the background technology, the invention provides an anti-seismic connection structure for an assembled steel-concrete composite beam, which comprises a steel box girder and a concrete bridge deck, wherein the steel box girder and the concrete bridge deck are prefabricated members, and the innovation of the anti-seismic connection structure is that: the two flange plates of the steel box girder are respectively provided with a first connecting ridge, the axial direction of the first connecting ridge is parallel to the axial direction of the flange plates, and the length of the first connecting ridge is equal to the length of the flange plates; the upper end face of the first connecting ridge is provided with a plurality of semicircular grooves, and a female part is arranged in each semicircular groove; the female part is of a concave spherical disc-shaped structure, and the outer diameter of the female part is larger than the thickness of the first connecting ridge;
Two grooves are formed in the lower side face of the concrete bridge deck, and the grooves are communicated with the front end face and the rear end face of the concrete bridge deck; the axial direction of the groove is parallel to the axial direction of the concrete bridge deck; the bottom of the groove is provided with a second connecting ridge, the axial direction of the second connecting ridge is parallel to the axial direction of the groove, and the length of the second connecting ridge is matched with the length of the first connecting ridge; the positions of the two second connecting ridges are opposite to the two first connecting ridges respectively; a plurality of male pieces are arranged on the lower end face of the second connecting ridge, and the male pieces correspond to the female pieces one by one; the male part is of a hemispherical structure, and the size of the male part is matched with that of the female part;
When the concrete bridge deck slab is assembled, the concrete bridge deck slab is placed on the flange plate of the steel box girder, the lower end face of the concrete bridge deck slab is contacted with the upper end face of the flange plate, a plurality of male parts on the second connecting ridge are correspondingly inserted into a plurality of female parts on the first connecting ridge one by one, mortar is poured into the groove, and a bonding body is formed after the mortar is solidified; the bonding body wraps the first connecting ridge, the female part, the second connecting ridge and the male part; after the bond is broken due to an earthquake, the male part and the female part can slide relatively in a certain range.
In specific implementation, the male part and the female part are made of steel and welded on the corresponding connecting ridges.
The principle of the scheme is as follows: the male part and the female part are respectively formed on the first connecting ridge and the second connecting ridge in a prefabrication mode, the first connecting ridge and the second connecting ridge are also respectively formed on the steel box girder and the concrete bridge deck in a prefabrication mode, so that the on-site manufacturing procedure is omitted, the concrete bridge deck can be installed by only aligning the male part and the female part with each other when the concrete bridge deck is installed, the installation operation is very convenient, the construction process can be greatly simplified, and the construction period is shortened; in the bridge service process, the friction force between the male part and the female part and the bonding force between each structure and the bonding body bear transverse and longitudinal shearing forces and resist vertical lifting force; under the earthquake condition, after the vibration reaches a certain intensity, the adhesive body can be destroyed at first, at this time, because the male part and the female part are in spherical surface fit, when small-amplitude relative shaking occurs between the steel box girder and the concrete bridge deck, the male part and the female part can slide back and forth in a certain range, thereby playing a role in absorbing earthquake energy and playing a certain anti-seismic effect.
Preferably, the first connecting ridge and the second connecting ridge are made of patterned steel plates; the first connecting ridge is welded on the flange plate; the upper part of the second connecting ridge is pre-buried in the concrete bridge deck.
The beneficial technical effects of the invention are as follows: the anti-seismic connection structure for the assembled steel-concrete composite beam is convenient to construct, the shear bearing capacity of the structure can be effectively improved, and the seismic energy can be absorbed by sliding after the binding body is damaged.
Drawings
FIG. 1, a schematic diagram of a semi-sectional explosive structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the female and male connectors;
FIG. 3 is a schematic illustration of a concrete deck structure;
The names corresponding to the marks in the figure are respectively: the concrete bridge comprises a first connecting ridge 1, a female part 11, a second connecting ridge 2, a male part 21, a steel box girder 3, a flange plate 31, a concrete bridge deck 4, a groove 5, a grouting hole 6 and a bonding body 7.
Detailed Description
The utility model provides an antidetonation connection structure for assembled steel and concrete composite beam, includes steel case roof beam and concrete bridge deck, steel case roof beam and concrete bridge deck are the prefabrication, and its innovation lies in: the two flange plates of the steel box girder are respectively provided with a first connecting ridge 1, the axial direction of the first connecting ridge 1 is parallel to the axial direction of the flange plates, and the length of the first connecting ridge 1 is equal to the length of the flange plates; the upper end face of the first connecting ridge 1 is provided with a plurality of semicircular grooves, and each semicircular groove is internally provided with a female part 11; the female member 11 is of a concave spherical disc structure, and the outer diameter of the female member 11 is larger than the thickness of the first connecting ridge 1;
Two grooves are formed in the lower side face of the concrete bridge deck, and the grooves are communicated with the front end face and the rear end face of the concrete bridge deck; the axial direction of the groove is parallel to the axial direction of the concrete bridge deck; the bottom of the groove is provided with a second connecting ridge 2, the axial direction of the second connecting ridge 2 is parallel to the axial direction of the groove, and the length of the second connecting ridge 2 is matched with the length of the first connecting ridge 1; the positions of the two second connecting ridges 2 are opposite to the two first connecting ridges 1 respectively; a plurality of male members 21 are arranged on the lower end surface of the second connecting ridge 2, and the male members 21 are in one-to-one correspondence with the female members 11; the male part 21 is of a hemispherical structure, and the size of the male part 21 is matched with that of the female part 11;
when the concrete bridge deck slab is assembled, the concrete bridge deck slab is placed on the flange plate of the steel box girder, the lower end face of the concrete bridge deck slab is contacted with the upper end face of the flange plate, the male members 21 on the second connecting ridge 2 are correspondingly inserted into the female members 11 on the first connecting ridge 1 one by one, mortar is poured into the grooves, and a bonding body is formed after the mortar is solidified; the adhesive body wraps the first connecting ridge 1, the female part 11, the second connecting ridge 2 and the male part 21; after the bond is broken by an earthquake, the male member 21 and the female member 11 can slide relatively within a certain range.
Further, the first connecting ridge 1 and the second connecting ridge 2 are made of patterned steel plates; the first connecting ridge 1 is welded on the flange plate; the upper part of the second connecting ridge 2 is pre-embedded in the concrete deck.
Claims (2)
1. The utility model provides an antidetonation connection structure for assembled steel and concrete composite beam, includes steel case roof beam and concrete bridge deck, steel case roof beam and concrete bridge deck are prefabrication, its characterized in that: the two flange plates of the steel box girder are respectively provided with a first connecting ridge (1), the axial direction of the first connecting ridge (1) is parallel to the axial direction of the flange plates, and the length of the first connecting ridge (1) is equal to the length of the flange plates; a plurality of semicircular grooves are formed in the upper end face of the first connecting ridge (1), and a female part (11) is arranged in each semicircular groove; the female part (11) is of a concave spherical disc-shaped structure, and the outer diameter of the female part (11) is larger than the thickness of the first connecting ridge (1);
Two grooves are formed in the lower side face of the concrete bridge deck, and the grooves are communicated with the front end face and the rear end face of the concrete bridge deck; the axial direction of the groove is parallel to the axial direction of the concrete bridge deck; the bottom of the groove is provided with a second connecting ridge (2), the axial direction of the second connecting ridge (2) is parallel to the axial direction of the groove, and the length of the second connecting ridge (2) is matched with the length of the first connecting ridge (1); the positions of the two second connecting ridges (2) are opposite to the two first connecting ridges (1) respectively; a plurality of male members (21) are arranged on the lower end surface of the second connecting ridge (2), and the male members (21) are in one-to-one correspondence with the female members (11); the male part (21) is of a hemispherical structure, and the size of the male part (21) is matched with that of the female part (11);
when the concrete bridge deck is assembled, the concrete bridge deck is placed on the flange plate of the steel box girder, the lower end face of the concrete bridge deck is contacted with the upper end face of the flange plate, a plurality of male parts (21) on the second connecting ridge (2) are correspondingly inserted into a plurality of female parts (11) on the first connecting ridge (1) one by one, mortar is poured into the grooves, and a bonding body is formed after the mortar is solidified; the first connecting ridge (1), the female part (11), the second connecting ridge (2) and the male part (21) are wrapped by the adhesive body; after the bond is broken by an earthquake, the male part (21) and the female part (11) can slide relatively within a certain range.
2. The shock-resistant coupling structure for fabricated reinforced concrete composite beams according to claim 1, wherein: the first connecting ridges (1) and the second connecting ridges (2) are made of patterned steel plates; the first connecting ridge (1) is welded on the flange plate; the upper part of the second connecting ridge (2) is pre-buried in the concrete bridge deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153236.9A CN112695616B (en) | 2021-02-04 | 2021-02-04 | Anti-seismic connection structure for assembled steel-concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153236.9A CN112695616B (en) | 2021-02-04 | 2021-02-04 | Anti-seismic connection structure for assembled steel-concrete composite beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112695616A CN112695616A (en) | 2021-04-23 |
| CN112695616B true CN112695616B (en) | 2024-05-10 |
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| CN202110153236.9A Active CN112695616B (en) | 2021-02-04 | 2021-02-04 | Anti-seismic connection structure for assembled steel-concrete composite beam |
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2021
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| CN112695616A (en) | 2021-04-23 |
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