CN113502740A - Novel distributed small hole groove for prefabricated bridge deck of steel-concrete composite beam - Google Patents
Novel distributed small hole groove for prefabricated bridge deck of steel-concrete composite beam Download PDFInfo
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- CN113502740A CN113502740A CN202110690965.8A CN202110690965A CN113502740A CN 113502740 A CN113502740 A CN 113502740A CN 202110690965 A CN202110690965 A CN 202110690965A CN 113502740 A CN113502740 A CN 113502740A
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- small hole
- bridge deck
- steel
- prefabricated
- composite beam
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a novel distributed small hole groove of a prefabricated bridge deck of a steel-concrete composite beam, which comprises a prefabricated bridge deck, small hole grooves, shear nails, epoxy mortar and rubber strips, wherein the small hole grooves on the prefabricated bridge deck are arranged at equal intervals along the length direction of a bridge, a row of shear nails are arranged in the small hole grooves, the bridge deck is tightly attached to a steel beam by arranging the rubber strips and the epoxy mortar, after the small hole grooves of the bridge deck are clamped into the shear nails, high-performance compensation shrinkage concrete is poured in the small hole grooves to permanently combine the bridge deck and the steel beam to form a composite beam, the small hole grooves are suitable for prefabricated bridge deck steel-concrete composite beam bridges with any bridge span and any bridge width, the shear nails are arranged at equal intervals along the longitudinal direction of the bridge by clustered small hole grooves, the shear force is uniformly and continuously transmitted and better accords with the theoretical distribution of the longitudinal horizontal shear force of the composite beam, and then the clustered small hole groove prefabricated bridge deck is manufactured in a prefabricating factory, the prefabricated slab is a small member, the prefabricated installation is convenient, and the construction quality is controllable.
Description
Technical Field
The invention relates to the technical field of bridge design, in particular to a novel distributed small hole groove for a prefabricated bridge deck of a steel-concrete composite beam.
Background
The distributed small-hole grooves are universal structures of the Japanese composite girder bridge, the technology of the Japanese composite girder bridge is advanced, the structure is reasonable, the introduced distributed small-hole grooves are suitable for prefabricated bridge deck slab steel-concrete composite girder bridges with any bridge span and any bridge width, the shear nails are arranged at equal intervals along the longitudinal bridge direction through the distributed small-hole grooves, the shear force transmission is uniform and continuous, the theoretical distribution of the longitudinal horizontal shear force of the composite girder is better met, secondly, the prefabricated bridge deck slab of the distributed small-hole grooves is manufactured in a prefabrication factory, the prefabricated slab is a small component, the prefabrication and installation are convenient, and the construction quality is high;
however, the prior art has the following defects: at present, the prefabricated decking of domestic steel-concrete composite beam is mainly for interval macropore groove form, the shear force nail adopts the nail crowd to arrange, the length of shear force nail crowd limit can take 500 ~ 800m, the interval between the nail crowd is at 1.2 ~ 1.5m, the decking pore groove that this arrangement form corresponds is great, a prefabricated plate generally only has two rows of macropore grooves, there are multirow shear force nails in every macropore inslot, this kind of constructional advantage is that the construction is simple and convenient relatively, the operation is reserved to the pore groove, the disadvantage is that the shear force nail arranges discontinuously, it is not identical to pass power with the theory.
The novel distributed small hole grooves can well make up the defects of the prefabricated bridge deck slab with the traditional spaced large hole grooves, and a new hole opening selection is provided for the prefabricated bridge deck slab with the steel-concrete composite beam.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a novel distributed small hole groove for a prefabricated bridge deck of a steel-concrete composite beam, and aims to solve the problems that at present, the prefabricated bridge deck of the steel-concrete composite beam in China is mainly in a spaced large hole groove form, shear nails are arranged in groups of nails, the length of the sides of the shear nails can be 500-800 m, the distance between the nail groups is 1.2-1.5 m, the hole groove of the bridge deck corresponding to the arrangement form is large, one prefabricated plate generally only has two rows of large hole grooves, and multiple rows of shear nails are arranged in each large hole groove.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a novel distributing type aperture groove of precast decking of steel-concrete composite beam, its structure includes precast decking, aperture groove, shear force nail, girder steel roof, epoxy mortar, rubber strip, the aperture groove on the precast decking is arranged along the equidistance of bridge length direction, one row of shear force nail can be arranged to every inside in aperture groove, after the aperture groove card advances the shear force nail, pour high performance compensation shrink concrete in the aperture inslot and make precast decking and girder steel roof combine permanently to form the composite beam, closely laminate through setting up rubber strip and epoxy mortar between precast decking and the girder steel roof.
The prefabricated bridge deck is further improved, small hole grooves and shear nails are embedded in the prefabricated bridge deck, the small hole groove clusters are arranged at equal intervals along the longitudinal bridge direction, and the specific intervals can be arranged according to the size of the horizontal shear force and two intervals of branch point positions and midspan positions.
The invention is further improved, the inner part of the small hole groove is integrally embedded and connected with the shear nail, the cluster of the small hole groove is a rectangular cone with a round end, the top surface is large, the bottom surface is small, and post-cast concrete construction is convenient.
According to the invention, the small hole grooves are internally provided with a row of shear nails.
The invention is further improved, and the lower end of the prefabricated bridge deck is matched with the steel beam top plate through the arrangement of the rubber strips and the epoxy mortar, so that the lower end of the prefabricated bridge deck is tightly attached to the steel beam top plate.
Advantageous effects
Compared with the prior art, the invention has the following beneficial effects;
1. the prefabricated bridge deck slab is suitable for prefabricated bridge deck steel-concrete composite beam bridges with any bridge span and any bridge width, the clustered small-hole grooves enable the shear nails to be arranged at equal intervals along the longitudinal bridge direction, the shear force is transmitted uniformly and continuously, the theoretical distribution of the longitudinal horizontal shear force of the composite beam is better met, the clustered small-hole groove prefabricated bridge deck slab is manufactured in a prefabrication factory, the prefabricated slab is a small-sized component, the prefabrication and installation are convenient, and the construction quality is controllable.
Drawings
Fig. 1 is a schematic structural diagram of a novel distributed small hole groove of a precast bridge deck slab of a steel-concrete composite beam according to the invention.
Fig. 2 is a schematic plan view of a prefabricated bridge deck according to the present invention.
FIG. 3 is a schematic structural diagram of a corresponding small-hole groove planar projection macro sample.
Fig. 4 is a structural schematic diagram of a front elevation sectional view of a small hole groove corresponding to the invention.
FIG. 5 is a schematic structural diagram of a side elevation sectional view of a small-hole groove according to the present invention.
In the figure: the prefabricated bridge deck slab comprises a prefabricated bridge deck slab-1, a small hole groove-2, shear nails-3, a steel beam top plate-4, epoxy mortar-5 and rubber strips-6.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
The invention is further described below with reference to the accompanying drawings:
example 1
As shown in figures 1 to 5:
the structure of the bridge comprises a prefabricated bridge deck 1, small hole grooves 2, shear nails 3, a steel beam top plate 4, epoxy mortar 5 and rubber strips 6, wherein the small hole grooves 2 on the prefabricated bridge deck 1 are arranged at equal intervals along the bridge length direction, a row of shear nails 3 are arranged in one small hole groove 2, the bridge deck and the steel beam top plate 4 are tightly attached through arranging the rubber strips 6 and the epoxy mortar 5, after the small hole grooves 2 of the bridge deck are clamped into the shear nails 3, high-performance compensation shrinkage concrete is poured in the small hole grooves 2 to enable the bridge deck and the steel beam top plate 4 to be permanently combined to form a combined beam, the small hole grooves 2 of the cluster are arranged at equal intervals along the longitudinal bridge direction, and the specific intervals can be arranged according to the size of a horizontal shear force, and the positions of branch points and the midspan positions.
The prefabricated bridge deck slab is characterized in that the small hole groove 2 is a round-end rectangular cone, the top surface is large, the bottom surface is small, post-cast concrete construction is facilitated, a row of shear nails 3 are just arranged inside the small hole groove 2, post-cast high-performance compensation shrinkage concrete is arranged in the small hole groove 2, and the prefabricated bridge deck slab is tightly attached to the steel beam top plate 4 through the arrangement of the rubber strips 6 and the epoxy mortar 5.
The small-hole grooves 2 are suitable for prefabricated bridge deck slab 1 steel-concrete composite beam bridges with any bridge span and any bridge width, the shear nails 3 are arranged at equal intervals along the longitudinal bridge direction through the clustered small-hole grooves 2, the shear force transmission is uniform and continuous, the theoretical distribution of the longitudinal horizontal shear force of the composite beam is better met, the prefabricated bridge deck slab 3 of the small-hole grooves 2 is manufactured in a prefabrication factory, prefabricated slabs are small components, the prefabrication and installation are convenient, and the construction quality is controllable.
In order to solve the problem that the shear force transmission of the conventional gap large-hole groove prefabricated bridge deck is discontinuous, in this example, the small-hole grooves 2 are preferably arranged at equal intervals along the longitudinal bridge direction, and the specific intervals can be arranged according to the magnitude of the horizontal shear force, and the positions of the branch points and the mid-span positions.
The specific working principle is as follows:
the method comprises the steps of reserving a small hole groove 2 on a bridge deck in a factory, completing bridge deck prefabrication, completing steel beam manufacturing, welding a shear nail 3 at a corresponding position of a steel beam top plate 4 in the factory, operating and installing on site after a prefabricated bridge deck 1 reaches a beam storage period, constructing the steel beam in place before installation, laying a rubber strip 6 and an epoxy mortar 5 sealing layer on the top surface of the steel beam, then placing a prefabricated plate, enabling the shear nail 3 at the upper edge of the steel beam to be just clamped in the small hole groove of the prefabricated plate, cleaning and intervening the small hole groove 2 of the prefabricated plate after the prefabricated plate of a corresponding section is installed, and then pouring concrete to enable the prefabricated plate to be permanently combined with the steel beam.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a novel distributed aperture groove of precast decking of steel-concrete composite beam, its structure includes precast decking (1), aperture groove (2), shear force nail (3), girder steel roof (4), epoxy mortar (5), rubber strip (6), aperture groove (2) on precast decking (1) are arranged along the bridge length direction equidistance, one row of shear force nail (3) can be arranged to every inside of aperture groove (2), behind aperture groove (2) card advance shear force nail (3), pour high performance compensation shrink concrete in aperture groove (2) and make precast decking (1) and girder steel roof (4) permanent combination form the composite beam, closely laminate its characterized in that through setting up rubber strip (6) and epoxy mortar (5) between precast decking (1) and girder steel roof (4).
2. The novel distributed small hole groove of the precast bridge deck slab of the steel-concrete composite beam as claimed in claim 1, wherein: the prefabricated bridge deck slab is characterized in that small hole grooves (2) and shear nails (3) are embedded in the prefabricated bridge deck slab (1), clusters of the small hole grooves (2) are arranged at equal intervals along the longitudinal bridge direction, and the specific intervals can be arranged according to the size of a horizontal shear force and two intervals of branch point positions and midspan positions.
3. The novel distributed small hole groove of the precast bridge deck slab of the steel-concrete composite beam as claimed in claim 2, wherein: the interior of the small hole groove (2) is integrally embedded and fixedly connected with the shear nails (3), the small hole groove (2) is integrally a round-end rectangular cone, the top surface is large, the bottom surface is small, and post-cast concrete construction is facilitated.
4. The novel distributed small hole groove of the precast bridge deck slab of the steel-concrete composite beam as claimed in claim 3, wherein: a row of shear nails (3) are arranged in each small hole groove (2).
5. The novel distributed small hole groove of the precast bridge deck slab of the steel-concrete composite beam as claimed in claim 4, wherein: after the shear nails (3) are installed in the small hole grooves (2), high-performance compensation shrinkage concrete is poured to realize sealing solidification.
6. The novel distributed small hole groove of the precast bridge deck slab of the steel-concrete composite beam as claimed in claim 1, wherein: the prefabricated bridge deck slab is characterized in that the lower end of the prefabricated bridge deck slab (1) is matched with the steel beam top plate (4) through the rubber strips (6) and the epoxy mortar (5), so that the prefabricated bridge deck slab is tightly attached to the steel beam top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690965.8A CN113502740A (en) | 2021-06-22 | 2021-06-22 | Novel distributed small hole groove for prefabricated bridge deck of steel-concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690965.8A CN113502740A (en) | 2021-06-22 | 2021-06-22 | Novel distributed small hole groove for prefabricated bridge deck of steel-concrete composite beam |
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| Publication Number | Publication Date |
|---|---|
| CN113502740A true CN113502740A (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110690965.8A Pending CN113502740A (en) | 2021-06-22 | 2021-06-22 | Novel distributed small hole groove for prefabricated bridge deck of steel-concrete composite beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657887A (en) * | 2022-04-18 | 2022-06-24 | 杭州市交通规划设计研究院有限公司 | Construction method of precast slab anti-cracking structure in hogging moment area of combined beam bridge |
-
2021
- 2021-06-22 CN CN202110690965.8A patent/CN113502740A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657887A (en) * | 2022-04-18 | 2022-06-24 | 杭州市交通规划设计研究院有限公司 | Construction method of precast slab anti-cracking structure in hogging moment area of combined beam bridge |
| CN114657887B (en) * | 2022-04-18 | 2024-04-02 | 杭州市交通规划设计研究院有限公司 | Construction method of prefabricated slab crack-resistant structure in hogging moment area of composite beam bridge |
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