CN108330806A - The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and production method - Google Patents
The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and production method Download PDFInfo
- Publication number
- CN108330806A CN108330806A CN201810265804.2A CN201810265804A CN108330806A CN 108330806 A CN108330806 A CN 108330806A CN 201810265804 A CN201810265804 A CN 201810265804A CN 108330806 A CN108330806 A CN 108330806A
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- steel
- girder steel
- floorings
- bolt
- interface
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
-
- 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
- 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to steel reinforced concrete combined beam structures and its production method that a kind of interface precompressed compoiste adhering anchors shear connections knot, by the way of epoxy resin mortar layer and shearing bolt composite joint, and pretightning force is applied by shearing bolt, so that concrete slab and girder steel combination interface is in preloading condition, realizes the connection of concrete slab and girder steel；The friction shear resisting of epoxy resin mortar shear connections layer and combination interface can improve the stress of bolt stress raisers simultaneously.After shearing bolt applies pretightning force, epoxy resin mortar layer is in preloading condition with girder steel, prefabricated bridge faying face, shearing force during bridge operation between part concrete slab and girder steel can be transmitted by epoxy resin mortar layer, reduce the fatigue stress of shearing bolt, improve the phenomenon that concrete slab is with bolt junction stress concentration, promotes the fatigue life of composite beam bridge structure.
Description
Technical field
The present invention relates to field of civil engineering, connect more specifically to a kind of anchoring shearing resistance of interface precompressed compoiste adhering
Bonded steel-mixes the life of the mixed combined beam structure of steel-of combined beam structure and interface precompressed compoiste adhering anchoring shear connections knot
Production method.
Background technology
In recent years, steel-concrete composite beam bridge has obtained more extensive use in China, and such bridge can fully be sent out
The performance of steel and concrete is waved, there is good anti-seismic performance, while dead weight can be mitigated, increase under-clearance, moreover it is possible to effectively contracting
Short construction period.But the composite beam bridge of the prior art remains some shortcomings：
There are stress raisers to show under load action for common peg shear connector in composite beam bridge structure at present
As peg tends to suffer from fatigue fracture under Vehicle Load；Concrete slab is easily sent out under vehicle Fatigue Load
Raw fatigue rupture, the service life of bridge floor board member are less than the design service life of full bridge structure, and composite bridge is in operation process
Concrete slab is needed replacing, the overall life cycle cost of bridge is increased.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide Welded-Stud Conectors in a kind of raising composite beam bridge and
The service life of concrete slab, the superior and easy for construction NEW TYPE OF COMPOSITE of reasonable in design, simple structure, stress performance
The steel-of bond-anchorage shear connections knot mixes combined beam structure and a kind of interface precompressed compoiste adhering anchors shear connections knot
Steel-mixes the production method of combined beam structure.
Technical scheme is as follows：
A kind of mixed combined beam structure of steel-of interface precompressed compoiste adhering anchoring shear connections knot, including prefabricated floorings,
Girder steel, floorings are bonded in the upper flange of girder steel, and the bottom surface of floorings is provided with bolt, and bolt passes through upper flange, and is installed with
Nut applies combination interface normal direction prestressing force by tightening nut.
Preferably, the two sides of the upper flange of girder steel along its length are along rubber item is provided with, floorings, which are taken, is placed on rubber
On leather strap.
Preferably, between two rubber items, epoxy resin mortar is filled between floorings and the upper flange of girder steel, is bonded
Floorings and girder steel.
Preferably, floorings offer back pouring hole, the upper flange of girder steel is provided with bolt in the position of corresponding back pouring hole,
Nut is arranged from the bottom surface of upper flange on bolt；Floorings are taken be put on girder steel after, the casting concrete in back pouring hole.
Preferably, being arranged with spring on bolt, spring keeps compressive state.
A kind of steel-of interface precompressed compoiste adhering anchoring shear connections knot mixes the production method of combined beam structure, will be prefabricated
Floorings take and be placed on girder steel, and floorings are bonded in the upper flange of girder steel；The upper flange of girder steel is in corresponding back pouring hole
Position is provided with bolt, and nut is arranged from the bottom surface of upper flange on bolt；Floorings are taken be put on girder steel after, in back pouring hole
Casting concrete；After equal concrete reach defined intensity, tightens nut and apply combination interface normal direction prestressing force.
Preferably, rubber item first is set on the two sides edge of the upper flange of girder steel along its length, it then again will be prefabricated
Floorings take and be placed on rubber item.
Preferably, between two rubber items, epoxy resin mortar is filled between floorings and the upper flange of girder steel, is bonded
Floorings and girder steel.
Preferably, being arranged with spring on bolt, spring keeps compressive state.
Preferably, the concrete poured in back pouring hole is ungauged regions self-flowing dense high-strength concrete.
Beneficial effects of the present invention are as follows：
The steel-of interface precompressed compoiste adhering anchoring shear connections knot of the present invention mixes combined beam structure and its producer
Method applies pretightning force by the way of epoxy resin mortar layer and shearing bolt composite joint, and by shearing bolt, makes concrete slab
It is in preloading condition with girder steel combination interface, realizes the connection of concrete slab and girder steel；Epoxy resin mortar shear connections simultaneously
The friction shear resisting of layer and combination interface can improve the stress of bolt stress raisers.Shearing bolt applies pretightning force
Afterwards, epoxy resin mortar layer and girder steel, prefabricated bridge faying face be in preloading condition, during bridge operation part concrete slab with
Shearing force between girder steel can be transmitted by epoxy resin mortar layer, reduce the fatigue stress of shearing bolt, improve concrete slab with
The phenomenon that bolt junction stress concentration, promotes the fatigue life of composite beam bridge structure.
Description of the drawings
Fig. 1 is the structural schematic diagram that steel-mixes combined beam structure；
Fig. 2 is the partial sectional view that steel-mixes combined beam structure (nothing pours in back pouring hole)；
Fig. 3 is sectional view of the mixed combined beam structure of steel-in width direction；
Fig. 4 is sectional view of the mixed combined beam structure of steel-in the back pouring hole position of length direction；
Fig. 5 is the combination schematic diagram of bolt, spring and nut；
Fig. 6 is the schematic diagram of state one；
Fig. 7 is the schematic diagram of state two；
Fig. 8 is the schematic diagram of state three；
Fig. 9 is the schematic diagram of state four；
In figure：10 be girder steel, and 11 be upper flange, and 12 be screw hole, and 20 be floorings, and 21 be back pouring hole, and 30 be rubber item, 40
It is epoxy resin mortar, 50 be concrete, and 60 be bolt, and 61 be spring, and 62 be nut.
Specific implementation mode
The present invention is further described in detail with reference to the accompanying drawings and embodiments.
The present invention is insufficient existing for the steel-concrete composite beam bridge of the prior art in order to solve, and provides a kind of interface precompressed
The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and its production method, improves Welded-Stud Conectors in composite beam bridge
With the service life of concrete slab, reasonable in design, simple structure, stress performance are superior and easy for construction.
As shown in Figure 1 and Figure 2, a kind of steel-of interface precompressed compoiste adhering anchoring shear connections knot mixes combined beam structure, packet
Prefabricated floorings 20, girder steel 10 (being commonly used for I-steel) are included, floorings 20 are bonded in the upper flange 11 of girder steel 10, floorings 20
Bottom surface be provided with bolt 60 (in the present embodiment, bolt 60 be the peg with nut), bolt 60 passes through upper flange 11, and spinning
There is nut 62, applies combination interface normal direction prestressing force by tightening nut 62, i.e., apply pretightning force in 60 root of shearing resistance bolt.
As shown in Figure 3, Figure 4, in order to make to form buffering between girder steel 10 and floorings 20, the upper flange 11 of girder steel 10 is along length
The two sides in direction are spent along rubber item 30 is provided with, and floorings 20, which are taken, to be placed on rubber item 30.
In the present embodiment, between two rubber items 30, the ring type filling between floorings 20 and the upper flange 11 of girder steel 10
Oxygen mortar 40 bonds floorings 20 and girder steel 10.
The set-up mode of bolt 60 is specifically, floorings 20 offer back pouring hole 21, and the upper flange 11 of girder steel 10 is in correspondence
The position of back pouring hole 21 is provided with bolt 60, as shown in figure 5, being arranged with spring 61 on bolt 60, spring 61 keeps compressive state.
Nut 62 is spirally connected from the bottom surface of upper flange 11 to be arranged on bolt 60；Floorings 20 are taken be put on girder steel 10 after, in back pouring hole 21
Inside pour ungauged regions self-flowing dense high-strength concrete 50.Then after concrete 50 solidifies, one end of bolt 60 can be fixedly connected
In the bottom surface of floorings 20.When implementation, the length and width of back pouring hole 21 need to meet design requirement.The reserved spiral shell in the top flange of girder steel 10
Hole 12 forms a determining deviation along 10 length direction of girder steel, arranges appropriate number of rows.Bolt 60 uses high-strength steel material.
The steel-that shear connections knot is anchored the present invention also provides a kind of interface precompressed compoiste adhering mixes the production of combined beam structure
Prefabricated floorings 20 are taken and are placed on girder steel 10 by method, and floorings 20 are bonded in the upper flange 11 of girder steel 10；Girder steel 10
Upper flange 11 position of corresponding back pouring hole 21 is provided with bolt 60, nut 62 is arranged from the bottom surface of upper flange 11 in bolt 60
On；Floorings 20 are taken be put on girder steel 10 after, ungauged regions self-flowing dense high-strength concrete 50 is poured in back pouring hole 21；Equal coagulations
After soil 50 reaches defined intensity, tightens nut 62 and apply combination interface normal direction prestressing force.
In order to make between girder steel 10 and floorings 20 formed buffering, first girder steel 10 upper flange 11 along its length two
Then prefabricated floorings 20 are taken again and are placed on rubber item 30 along setting rubber item 30 in side.And then in the present embodiment, two
Between rubber item 30, epoxy resin mortar 40 is filled between floorings 20 and the upper flange 11 of girder steel 10, bond floorings 20 with
Girder steel 10.
Corresponding form is as follows during the production method of the present invention：
State one, as shown in fig. 6, the upper flange 11 of girder steel 10 reserves screw hole 12, screw hole 12 meets along 10 length direction of girder steel
Design requirement spacing arranges appropriate number of rows；Girder steel 10 is placed in lifting.
State two, as shown in fig. 7, the width of rubber item 30, length meet the requirement of support prefabricated board weight, rubber item 30
It is laid on the two sides edge of 10 upper flange 11 of girder steel.
State three, as shown in figure 8, prefabricated floorings 20 are taken and are placed on rubber item 30, pass through the back pouring hole of floorings 20
21, toward filling epoxy resin mortar 40 between girder steel 10 and floorings 20.
State four, as shown in figure 9, bolt 60 using meeting the intensity and size of shear-carrying capacity requirement.Spring 61 is sleeved on
On bolt 60, bolt 60 passes through the screw hole 12 of girder steel 10, and the lower end of bolt 60 passes through the upper flange 11 of girder steel 10.
State five, as shown in Figure 1, in back pouring hole 21 cast in situs ungauged regions self-flowing dense high-strength concrete 50, wait mixing
After solidifying soil 50 reaches design strength, then with by the application pretightning force of bolt 60, make to combine boundary between 50 plate of concrete and girder steel 10
Face is in preloading condition.
Above-described embodiment is intended merely to illustrate the present invention, and is not used as limitation of the invention.As long as according to this hair
Bright technical spirit is changed above-described embodiment, modification etc. will all be fallen in the scope of the claims of the present invention.
Claims (10)
1. a kind of steel-of interface precompressed compoiste adhering anchoring shear connections knot mixes combined beam structure, which is characterized in that including prefabricated
Floorings, girder steel, floorings are bonded in the upper flange of girder steel, and the bottom surface of floorings is provided with bolt, and bolt passes through upper flange,
And it is installed with nut, apply combination interface normal direction prestressing force by tightening nut.
2. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 1 mixes combined beam structure, special
Sign is, along rubber item is provided with, floorings, which are taken, to be placed on rubber item for the two sides of the upper flange of girder steel along its length.
3. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 2 mixes combined beam structure, special
Sign is, between two rubber items, epoxy resin mortar is filled between floorings and the upper flange of girder steel, bonds floorings and steel
Beam.
4. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 1 mixes combined beam structure, special
Sign is, floorings offer back pouring hole, and the upper flange of girder steel is provided with bolt in the position of corresponding back pouring hole, and nut is from upper limb
The bottom surface of plate is arranged on bolt；Floorings are taken be put on girder steel after, the casting concrete in back pouring hole.
5. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 1 mixes combined beam structure, special
Sign is, spring is arranged on bolt, and spring keeps compressive state.
6. a kind of steel-of interface precompressed compoiste adhering anchoring shear connections knot mixes the production method of combined beam structure, feature exists
In prefabricated floorings are taken and are placed on girder steel, and floorings are bonded in the upper flange of girder steel；The upper flange of girder steel is in correspondence
The position of back pouring hole is provided with bolt, and nut is arranged from the bottom surface of upper flange on bolt；Floorings are taken be put on girder steel after,
Casting concrete in back pouring hole；After equal concrete reach defined intensity, tightens nut and apply combination interface normal direction prestressing force.
7. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 6 mixes the life of combined beam structure
Production method, which is characterized in that the first two sides edge setting rubber item in the upper flange of girder steel along its length, it then again will be prefabricated
Floorings take and be placed on rubber item.
8. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 7 mixes the life of combined beam structure
Production method, which is characterized in that between two rubber items, epoxy resin mortar is filled between floorings and the upper flange of girder steel, is glued
Scaffolding panel and girder steel.
9. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 6 mixes the life of combined beam structure
Production method, which is characterized in that spring is arranged on bolt, spring keeps compressive state.
10. the steel-of interface precompressed compoiste adhering anchoring shear connections knot according to claim 6 mixes the life of combined beam structure
Production method, which is characterized in that the concrete poured in back pouring hole is ungauged regions self-flowing dense high-strength concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265804.2A CN108330806A (en) | 2018-03-28 | 2018-03-28 | The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265804.2A CN108330806A (en) | 2018-03-28 | 2018-03-28 | The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and production method |
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| CN108330806A true CN108330806A (en) | 2018-07-27 |
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| CN201810265804.2A Pending CN108330806A (en) | 2018-03-28 | 2018-03-28 | The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and production method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736198A (en) * | 2018-12-07 | 2019-05-10 | 东南大学 | A kind of combined type interface is tightly connected high-performance steel-UHPC thin plate combined structure system in advance |
| CN109868734A (en) * | 2019-03-25 | 2019-06-11 | 浙江温州沈海高速公路有限公司 | A kind of combination beam Stayed Cable Bridge panel novel seam structure and its construction method |
| CN110965700A (en) * | 2019-12-19 | 2020-04-07 | 华侨大学 | Steel-concrete composite beam connected by adopting studs, epoxy mortar and bolts |
| CN110965648A (en) * | 2019-12-19 | 2020-04-07 | 华侨大学 | Shear connector structure of assembled steel-concrete composite structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736198A (en) * | 2018-12-07 | 2019-05-10 | 东南大学 | A kind of combined type interface is tightly connected high-performance steel-UHPC thin plate combined structure system in advance |
| CN109868734A (en) * | 2019-03-25 | 2019-06-11 | 浙江温州沈海高速公路有限公司 | A kind of combination beam Stayed Cable Bridge panel novel seam structure and its construction method |
| CN110965700A (en) * | 2019-12-19 | 2020-04-07 | 华侨大学 | Steel-concrete composite beam connected by adopting studs, epoxy mortar and bolts |
| CN110965648A (en) * | 2019-12-19 | 2020-04-07 | 华侨大学 | Shear connector structure of assembled steel-concrete composite structure |
| CN110965648B (en) * | 2019-12-19 | 2024-05-14 | 华侨大学 | Shear connector structure of assembled steel-concrete combined structure |
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