CN209082348U - The construction of simply supported T-beam bridge serialization is realized in end floor beam connection - Google Patents
The construction of simply supported T-beam bridge serialization is realized in end floor beam connection Download PDFInfo
- Publication number
- CN209082348U CN209082348U CN201821739415.0U CN201821739415U CN209082348U CN 209082348 U CN209082348 U CN 209082348U CN 201821739415 U CN201821739415 U CN 201821739415U CN 209082348 U CN209082348 U CN 209082348U
- Authority
- CN
- China
- Prior art keywords
- end floor
- supported
- construction
- beams
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Link the construction for realizing simply supported T-beam bridge serialization the utility model relates to a kind of end floor beam, simple supported T-beam and bridge pier including existing simply supported T-beam bridge, the top surface of the bridge pier is provided with two simple supported T-beams, the adjacent end portion of two simple supported T-beams is equipped with end floor beam, it is connected between two end floor beams by connector, the upper surface of the top of two end floor beams adjacent end portion close with the top plate of two simple supported T-beams offers construction joint, it is connected with each other between the construction joint of two simple supported T-beams through being laid with separation layer, the upper surface of the barrier is equipped with structure cast-in-place continuous segment.The utility model is simple and reasonable for structure, the construction being transformed by the serialization, driving can be effectively avoided to occur to jump vehicle phenomenon in original expansion joint position, improve road-ability, and the shear resistance of end floor beam after T-type beam serialization can be improved, also have the advantages that method is simple, stress is clear, easy for construction, improvement cost is lower.
Description
Technical field
Link the construction for realizing simply supported T-beam bridge serialization the utility model relates to a kind of end floor beam.
Background technique
Simply supported girder bridge belongs to statically determinate structure, common bridge type of the simply supported T-beam bridge as Short/Medium Span Bridge, because of its construction letter
It is single, easy for construction, cheap, there is extensive use in highway in China bridge.Porous simply supported girder bridge is adaptive temperature change
Deformation, is usually arranged expansion joint on each bridge pier caused by change and live loading.The simply supported girder bridge of China's early stage construction
Design load is relatively low, as the case where magnitude of traffic flow is growing day by day and the growth of bridge service life, and expansion joint is damaged increasingly increases
Add, brings adverse effect to travel safety.It is also not easy to repair after the damage of expansion joint, substantially increases later period maintenance upkeep charges
With.
Simply supported non-uniform beam method is multi-span girder bridge strengthening reconstruction, the effective method for improving bearing capacity.It should
Method is rebuild in combination with deck paving, two across cast-in-place concrete between girder before, on it flange plate add negative reinforcement
Or presstressed reinforcing steel, so that simply supported beam is changed into the stress system of continuous beam, it is curved with the mobile load for reducing former bridge girder spaning middle section
Square and deflection value improve the bearing capacity of former bridge, reach reinforcing purpose.The bridge floor continuously side of reinforcing is used to multi-span girder bridge
Then be that the deck paving at adjacent two mid-span is chiseled when method, increase welding steel muscle, thus make consecutive number across or full-bridge mat formation by
Muscle of advocating is linked as entirety, has repaired deck paving.Such method is also commonly called as vacation continuously, and Cheng Qiaohou still belongs to freely-supported bridge.
It is found in practice, the beam section at the intermediate support of Simply supported non-uniform, often will appear more inclined crack in a certain range of end,
Length, density and the width of diagonal crack are all larger than the diagonal crack on the fulcrum beam of side.The appearance in this crack not only influences girder
Endurance quality, while being likely to cause end of main beam oblique section shear compression failure, cause damages to bridge security.Therefore with freely-supported
The method for becoming continuous beam reinforces multi-span girder bridge, and span centre bending bearing capacity can be such that mobile load grade improves, but beam-ends is anti-
Ability is cut not significantly improve.
Utility model content
The utility model makes improvement for the above-mentioned problems of the prior art, i.e., skill to be solved in the utility model
Art problem is to provide a kind of construction of end floor beam connection realization simply supported T-beam bridge serialization, is not only simple in structure, rationally, and
It is efficiently convenient.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of end floor beam connection realization freely-supported T-type
The construction of beam bridge serialization, simple supported T-beam and bridge pier including existing simply supported T-beam bridge, the top surface of the bridge pier is provided with two
Simple supported T-beam, the adjacent end portion of two simple supported T-beams are equipped with end floor beam, are connected between two end floor beams by connector, both ends are horizontal
The upper surface of the top of beam adjacent end portion close with the top plate of two simple supported T-beams offers construction joint, the construction of two simple supported T-beams
It is connected with each other between seam through being laid with separation layer, the upper surface of the barrier is equipped with structure cast-in-place continuous segment.
Further, on two end floor beams along vertical bridge to coaxially connection through-hole is offered, the connection through-hole is located at freely-supported T-type
Tensile zone under beam centroid axis；The connector includes connecting screw, company of the connecting screw on two end floor beams
Hole is connected, the both ends of connecting screw are locked by gasket and nut with end floor beam realization.
Further, the total length between the construction joint of the nearly adjacent end portion upper surface of the top plate of two simple supported T-beams is m, and m takes
Value is to have the range of hogging moment at the top of structure serialization rear abutment.
Further, the separation layer uses elastic material, and elastic material is rubber slab or expanded polystyrene (EPS).
Further, the structure cast-in-place continuous segment is cast-in-place concrete layer, and concrete is slightly expanded concrete.
Further, the upper surface of the simple supported T-beam and structure cast-in-place continuous segment is equipped with deck paving of concrete, bridge
Concrete is mated formation for high performance concrete in face, and high performance concrete uses polypropylene fiber concrete.
Further, the gap filling between two end floor beams has non-shrink mortar.
Compared with prior art, the utility model has the effect that the utility model is simple and reasonable for structure, by this
The construction of serialization transformation can be effectively avoided driving and occur to jump vehicle phenomenon in original expansion joint position, improves driving and relax
Adaptive, and the shear resistance of end floor beam after T-type beam serialization can be improved；Meanwhile the construction of serialization transformation can not have to
Original simply supported beam double support system is converted, has the advantages that method is simple, stress is clear, easy for construction, improvement cost is lower.
Detailed description of the invention
Fig. 1 is the elevation of existing simply supported T-beam bridge；
Fig. 2 is the elevation that existing simply supported T-beam bridge end floor beam is connected by connector；
Fig. 3 is the organigram in the utility model embodiment；
Fig. 4 is that construction joint opens up schematic diagram in the utility model embodiment；
Fig. 5 is the A-A profile construction schematic diagram in Fig. 3.
In figure:
1- simple supported T-beam；11- top plate；12- web；2- end floor beam；3- bridge pier；4- deck paving of concrete；5- is flexible
Seam；6- connector；61- connecting screw；62- rubber sheet gasket；63- steel nut；7- non-shrink mortar；8- separation layer；9- structure is existing
Pour continuous segment；10- construction joint.
Specific embodiment
In order to more clearly explain the utility model, the utility model is done furtherly with embodiment with reference to the accompanying drawing
It is bright, it should be apparent that, draw figures listed below is only some specific embodiments of the utility model.
As shown in Fig. 1~5, the construction of simply supported T-beam bridge serialization is realized in a kind of end floor beam connection of the utility model, including
The simple supported T-beam 1 and bridge pier 3 of existing simply supported T-beam bridge, the top surface of the bridge pier 3 are provided with two simple supported T-beams 1, the freely-supported
T-type beam 1 includes top plate 11 and web 12, and the top plate 11 is located at the upper surface of web 12, the adjacent end portion of two simple supported T-beams 1
It is equipped with end floor beam 2, is connected between two end floor beams 2 by connector 6, the top of the top of two end floor beams 2 and two simple supported T-beams 1
The upper surface of the nearly adjacent end portion of plate 11 offers construction joint 10, through being laid with separation layer between the construction joint 10 of two simple supported T-beams 1
8 are connected with each other, and 8 upper surface of separation layer is equipped with structure cast-in-place continuous segment 9.
In the present embodiment, along vertical bridge to coaxially connection through-hole is offered on two end floor beams 2, the connection through-hole is located at freely-supported
Tensile zone under 1 centroid axis of T-type beam；The connector 6 includes connecting screw 61, and the connecting screw 61 is finish rolling screw thread
The both ends of steel, connection through-hole of the connecting screw 61 on two end floor beams 2, connecting screw pass through rubber sheet gasket 62 and steel nut 63
It is locked with the realization of end floor beam 2.Free Transform is carried out by the rubber sheet gasket at fining twisted steel both ends, guarantees serialization transformation
Girder moment of flexure afterwards is identical as simply supported beam, i.e., does not transmit moment of flexure under vertical uniform load q and give pier upper bracket；To guarantee vertical lotus
It is still simply supported beam under load effect.Preferably, the quantity of required connector is according to the improved beam-ends section of simple supported T-beam serialization
Shear value is calculated.
Total length in the present embodiment, between the construction joint 10 of the nearly adjacent end portion upper surface of top plate 11 of two simple supported T-beams 1
For m, m value is to have the range of hogging moment at the top of structure serialization rear abutment.It should cut, apply in strict accordance with position is jumped when cutting top plate
Working hour should to bridge pier nearby be strained, stress monitor, if noting abnormalities should stop constructing；Cut should retain after top plate it is original
Longitudinal reinforcement, in order to the binding of subsequent reinforcing bar.
In the present embodiment, the separation layer 8 uses elastic material, and elastic material is rubber slab or expanded polystyrene (EPS), protects
Card vertical load is not transferred to end floor beam.
In the present embodiment, the structure cast-in-place continuous segment 9 is cast-in-place concrete layer, and concrete is slightly expanded concrete,
Reduce the blockage effect of pier top hogging moment area concrete.The structure cast-in-place continuous segment is in the end floor beam side not cut and top plate
After vertically and horizontally connection reinforcing bar is laid in side, the concrete of cast in situs structure continuous segment and deck paving guarantees that structure cast-in-place is continuous
Section cooperates with existing simple supported T-beam.
In the present embodiment, the upper surface of the simple supported T-beam 1 and structure cast-in-place continuous segment 9 is equipped with deck paving coagulation
Soil 4, deck paving of concrete 4 are high performance concrete, and high performance concrete uses polypropylene fiber concrete.
In the present embodiment, the gap filling between two end floor beams 2 has non-shrink mortar 7, guarantees vertical bridge to load and deformation
Pass to abutment.
Utility model has the advantages that providing feasible, effective guidance side for simply supported T-beam bridge serialization transformation
Method can be effectively avoided driving by this method and occur to jump vehicle phenomenon in original expansion joint position, improves road-ability.
This method can not have to convert original simply supported beam double support system to serialization along bridge, with method is simple, stress is clear, construction
Feature convenient, improvement cost is lower.This modified constitution stress is clear, guarantees freely-supported under vertical uniform load q or original
Beam, vertical bridge improve the shear resistance of end floor beam after T-type beam serialization to transforming continuous beam as under load action.
In the present embodiment, when construction, is comprised the following steps:
End floor beam connection: step S1 opens up the position for needing to be arranged connector on adjacent both ends crossbeam by design requirement
Through-hole is connected, by connecting screw through connection through-hole, the both ends of connecting screw are matched with gasket, nut, realize two side ends
The connection of crossbeam；
Step S2, it cuts existing deck paving: cutting the deck paving of existing simply supported T-beam bridge, safety is carried out when cutting
Measure causes to damage to avoid to existing simple supported T-beam:
Step S3, construction joint is set: cutting the top of two end floor beams and the top plate of two existing simple supported T-beams by design requirement
The concrete and reinforcing bar of the upper surface of nearly adjacent end portion, retain top plate portion longitudinal reinforcement, continuous for later period and structure cast-in-place
The longitudinal reinforcement of section is connected, and makes to form a construction joint between two pieces of adjacent existing simple supported T-beams；
Step S4, it is laid with separation layer: after construction joint is provided with, being laid with separation layer in the bottom of two construction joints；
Step S5, the cast-in-place continuous segment of constructing structure: laying in construction joint and vertically and horizontally connect reinforcing bar, longitudinal reinforcement and top plate
The longitudinal reinforcement retained when concrete chisel removal is connected, the concrete of cast in situs structure cast-in-place continuous segment, guarantees structure cast-in-place
Continuous segment and existing simple supported T-beam cooperate；
Step S6, new deck paving is poured: after the maintenance of structure cast-in-place continuous segment expires, in existing simple supported T-beam and knot
New deck paving of concrete is poured above the cast-in-place continuous segment of structure.
In the present embodiment, in step sl, the construction joint of the nearly adjacent end portion upper surface of the top plate of two existing simple supported T-beams it
Between total length be m, m value is to have the range of hogging moment at the top of structure serialization rear abutment；It should be in strict accordance with when cutting top plate
It jumps position to cut, bridge pier should nearby be strained when construction, stress monitor, if noting abnormalities should stop constructing；Cut top plate
After should retain original reinforcing bar, in order to subsequent reinforcing bar binding.
In the present embodiment, in step s 4, the thickness of construction joint bottom arrangement separation layer should meet existing simple supported T-beam and connect
The mobile load of pier top position and temperature deformation need after continuousization.
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the patents it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (7)
1. the construction of simply supported T-beam bridge serialization, the freely-supported T-type including existing simply supported T-beam bridge are realized in a kind of end floor beam connection
Beam and bridge pier, it is characterised in that: the top surface of the bridge pier is provided with two simple supported T-beams, and the adjacent end portion of two simple supported T-beams is all provided with
There is end floor beam, is connected between two end floor beams by connector, the top of two end floor beams abutting end close with the top plate of two simple supported T-beams
The upper surface in portion offers construction joint, is laid with separation layer between the construction joint of two simple supported T-beams and is connected with each other, the isolation
Layer upper surface is equipped with structure cast-in-place continuous segment.
2. the construction that simply supported T-beam bridge serialization is realized in end floor beam connection according to claim 1, it is characterised in that: two
Along vertical bridge to coaxially connection through-hole is offered on end floor beam, the connection through-hole is located at the tension under simple supported T-beam centroid axis
Region；The connector includes connecting screw, connection through-hole of the connecting screw on two end floor beams, and the two of connecting screw
End is locked by gasket and nut with end floor beam realization.
3. the construction that simply supported T-beam bridge serialization is realized in end floor beam connection according to claim 1, it is characterised in that: two
Total length between the construction joint of the nearly adjacent end portion upper surface of the top plate of simple supported T-beam is m, and m value is structure serialization rear axle
There is the range of hogging moment in pier top portion.
4. the construction that simply supported T-beam bridge serialization is realized in end floor beam connection according to claim 1, it is characterised in that: institute
Separation layer is stated using elastic material, elastic material is rubber slab or expanded polystyrene (EPS).
5. the construction that simply supported T-beam bridge serialization is realized in end floor beam connection according to claim 1, it is characterised in that: institute
Stating structure cast-in-place continuous segment is cast-in-place concrete layer, and concrete is slightly expanded concrete.
6. the construction that simply supported T-beam bridge serialization is realized in end floor beam connection according to claim 1, it is characterised in that: institute
The upper surface for stating simple supported T-beam and structure cast-in-place continuous segment is equipped with deck paving of concrete, and deck paving of concrete is high property
Energy concrete, high performance concrete use polypropylene fiber concrete.
7. the construction that simply supported T-beam bridge serialization is realized in end floor beam connection according to claim 1, it is characterised in that: two
Gap filling between end floor beam has non-shrink mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821739415.0U CN209082348U (en) | 2018-10-26 | 2018-10-26 | The construction of simply supported T-beam bridge serialization is realized in end floor beam connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821739415.0U CN209082348U (en) | 2018-10-26 | 2018-10-26 | The construction of simply supported T-beam bridge serialization is realized in end floor beam connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209082348U true CN209082348U (en) | 2019-07-09 |
Family
ID=67120761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821739415.0U Active CN209082348U (en) | 2018-10-26 | 2018-10-26 | The construction of simply supported T-beam bridge serialization is realized in end floor beam connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209082348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183634A (en) * | 2018-10-26 | 2019-01-11 | 福州大学 | The construction and its construction method of simply supported T-beam bridge serialization are realized in end floor beam connection |
-
2018
- 2018-10-26 CN CN201821739415.0U patent/CN209082348U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183634A (en) * | 2018-10-26 | 2019-01-11 | 福州大学 | The construction and its construction method of simply supported T-beam bridge serialization are realized in end floor beam connection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109183634A (en) | The construction and its construction method of simply supported T-beam bridge serialization are realized in end floor beam connection | |
| CN105839510B (en) | A kind of steel and ultra-high performance concrete composite continuous bridge structure and its construction method | |
| CN108824162A (en) | A kind of steel_concrete composite beam and its construction method using plain plate and corrugated sheet steel mixing web | |
| CN108385503A (en) | A kind of assembled light combination beam freely-supported structure changes continuous structure and its construction method | |
| CN105297641A (en) | Highway T beam diaphragm plate prestress reinforcing structure and working method for reinforcement using reinforcing structure | |
| CN106087711B (en) | Antinode work beam-steel concrete top plate-external prestressing combines T-shaped simply supported beam | |
| CN105839534B (en) | Steel and ultra-high performance concrete compoboard jointing and construction method | |
| CN109958049A (en) | A kind of modularization steel-is mixed to combine small box girder freely-supported continuous bridge and its construction method | |
| CN210395128U (en) | Hollow core plate beam connection structure in bridge widening | |
| CN207878254U (en) | A kind of assembled light combination beam freely-supported structure changes continuous structure | |
| CN205822006U (en) | Steel and ultra-high performance concrete compoboard jointing | |
| CN209082348U (en) | The construction of simply supported T-beam bridge serialization is realized in end floor beam connection | |
| CN212153072U (en) | UHPC corrugated steel web I-shaped combined continuous beam | |
| CN103205930B (en) | Structure for continuous transformation of existing simply supported hollow slab girder bridge and construction method of structure | |
| CN106087782B (en) | A kind of remodeling method of bridge floor floating bowstring arch bridge | |
| CN209538017U (en) | Paving structure at highway bridge deck expansion joint | |
| CN208933808U (en) | Using the steel_concrete composite beam of plain plate and corrugated sheet steel mixing web | |
| CN103911948B (en) | Be applied to horizontal purlin formula steel work and the construction method thereof of wide concrete rib plate-girder | |
| CN205474785U (en) | Steel - ultra high performance concrete combination continuous bridge structure | |
| CN213978594U (en) | Steel-concrete-UHPC combined bridge deck | |
| CN209227402U (en) | A kind of existing freely-supported hollow slab bridge structure serialization construction | |
| CN214459554U (en) | Combined beam | |
| CN203256627U (en) | Continuously-transforming structure of existing simply-supporting hollow plate girder bridge | |
| CN109183633B (en) | Continuous structure of existing simply supported hollow slab bridge structure and construction method thereof | |
| CN208183539U (en) | A kind of four beam type I-shaped steel-concrete composite beams of bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |