CN208933811U - A kind of novel steel-concrete combination Continuous Box Girder Bridge of erection without scaffolding - Google Patents
A kind of novel steel-concrete combination Continuous Box Girder Bridge of erection without scaffolding Download PDFInfo
- Publication number
- CN208933811U CN208933811U CN201821673284.0U CN201821673284U CN208933811U CN 208933811 U CN208933811 U CN 208933811U CN 201821673284 U CN201821673284 U CN 201821673284U CN 208933811 U CN208933811 U CN 208933811U
- Authority
- CN
- China
- Prior art keywords
- steel
- box girder
- bridge
- concrete
- segment
- 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
The utility model discloses a kind of novel steel-concretes of erection without scaffolding to combine Continuous Box Girder Bridge, the cushion cap being poured including interval and the bridge pier being fixed on each cushion cap, each pier coping portion is mounted on support, and steel-is provided between adjacent two support and mixes combined box beam segment；Steel box girder segment is lifted at the top of each support, steel-mixes the binding site of combined box beam segment and steel box girder segment, its web and bottom plate use high-strength bolt+two-sided splice plate fillet weld connection structure, and top plate connection uses the steel cell compartment structure of fill concrete.The utility model has the advantage of structurally reasonable, main components can be prefabricated in advance, on-site consolidation, and site operation speed is fast, meets the development trend of bridge industrialized construction；Pier top (hogging moment area) uses steel box-girder, and making whole bridge not only has the structural advantages of steel-concrete combination Continuous Box Girder Bridge, but also can effectively overcome the problems, such as that hogging moment area stress is unreasonable near steel-concrete combination Continuous Box Girder Bridge fulcrum.
Description
Technical field
The utility model relates to highways and city road and bridge technical field, more particularly, to a kind of the novel of erection without scaffolding
Steel-concrete combines Continuous Box Girder Bridge.
Background technique
Steel-concrete combined box beam is a kind of novel beam knot to grow up on the basis of steel construction and concrete structure
Structure.Steel-concrete combined box beam structure upper is made of concrete slab, and lower part is made of steel box-girder, and the junction of the two is with cutting
Power connector such as WELDING STUDS is formed by connecting.It combines in beam section, concrete slab is mainly pressurized, the main tension of steel box-girder, Ke Yichong
It is divided to the respective advantage for reasonably playing steel and two kinds of materials of concrete, compared with steel bridge, there is saving steel, reduce building height
It spends, increases stability and globality, reduce impact coefficient, fatigue resistance height, reduce girder steel burn into reduction noise, maintenance is supported
Protect the advantages that workload is less；It is compared with concrete bridge, and with being self-possessed, small, anti-seismic performance is good, batch production degree is high, scene behaviour
Make less, speed of application it is fast, the advantages that short time limit.In the wide valued overall background of China's steel excess capacity, environmental issue at this stage
Under, steel-concrete combined box beam is increasingly becoming one because having many advantages, such as above-mentioned economy, structural reliability, convenience for construction
Kind development trend.
But in actual use, steel-concrete combination Continuous Box Girder Bridge hogging moment area near fulcrum can generate coagulation
The rough sledding that native tension, girder steel are pressurized, concrete slab is under the action of load, the temperature difference, shrinkage and creep herein, tensile stress
It is larger, it easily cracks, and then cause the reduction of combined box beam rigidity and the decline of durability.Currently, in order to control concrete bridge
Board cracking, be usually taken the pre- jack-block of preload system, support, floorings segmentation casting method, precast concrete floorings method,
Arrangement of reinforcement limits concrete crack width method, applies the measures such as electrothermal prestressing.Wherein, the pre- jack-block of preload system, support, bridge floor
Plate segmentation casting method, precast concrete floorings method need through construction means, or so that box beam is generated advantageous second inner force, or change
Kind floorings stress-less length, or floorings shrinkage and creep is reduced, but the working procedure of these methods is complicated, stress is not bright enough
Really, so not using usually or only being used as ancillary measure；Arrangement of reinforcement limits concrete crack width method and applies electrothermal prestressing
It is using more method in current engineering, arrangement of reinforcement limits concrete crack width method by matching in the concrete slab of hogging moment area
Enough reinforcing bars are set, the cracking of concrete slab is controlled with this, are limited in the fracture width of concrete slab within feasible value,
But this method can only play the role of control, improvement, floorings can not be avoided to crack completely；Apply electrothermal prestressing to pass through in group
It closes in the concrete slab of girder construction fulcrum hogging moment area and prestressed strand is set, provide certain pressure to concrete slab and answer
Power makes concrete at fulcrum keep pressured state to a certain extent effectively to control the tensile stress of concrete near fulcrum, with
Floorings are avoided to crack, but its steel beam that need to be arranged is more intensive, farther out apart from web, steel beam provides box beam to part steel beam
Precompression hysteresis effect is obvious, and the stress that steel beam quadratic effect generates is big, and steel beam service efficiency is low；In addition, its vertical, horizontal is pre-
Stress steel beam intensively arranges that construction is complicated with regular reinforcement, is not easy to vibrate, concrete pouring quality is poor, it is difficult to reach expected
Technical effect.
Summary of the invention
The purpose of this utility model is that nearby being tied hogging moment area for existing steel-concrete combination Continuous Box Girder Bridge fulcrum
The deficiency that structure stress is unreasonable and existing the decking in the negative moment region crack Control Measures are ineffective provides a kind of no bracket and applies
The novel steel-concrete of work combines Continuous Box Girder Bridge.
To achieve the above object, the utility model can take following technical proposals:
The novel steel-concrete of erection without scaffolding described in the utility model combines Continuous Box Girder Bridge, including interval casting
Cushion cap and the bridge pier that is fixedly placed on each cushion cap, support is mounted at the top of each bridge pier, between adjacent two support
It is provided with steel-and mixes combined box beam segment；Steel box girder segment, the mixed combination of the steel-are lifted at the top of each support
The binding site of box girder segment and steel box girder segment, web and bottom plate are connected using high-strength bolt+two-sided splice plate fillet weld
Structure, top plate connection use the steel cell compartment structure of fill concrete.
To improve element precast amount, site operation workload is reduced, the high-strength bolt+two-sided splice plate fillet weld connects
Binding structure includes being clamped in steel-to mix combined box beam segment and steel box girder segment web or the splicing steel plate of back plate connections two sides,
It is spaced apart on the splicing steel plate and is equipped with connecting hole, be fitted with high-strength connection bolt in the connecting hole；The splicing steel plate
Periphery be integrated with the web or bottom plate by fillet weld seam.
The connection of the cushion cap and bridge pier (prefabricated) using grout sleeve+after pour the connection shape of high strength and no shrinting cement slurry
When pouring cushion cap, embedded bar is stretched out at the top of cushion cap likes:；Grout sleeve is embedded in bridge pier bottom when precast pier；Splicing
When, the embedded bar at the top of the cushion cap is inserted into the grout sleeve of the bridge pier bottom, and height is perfused in grout sleeve
Strong non-shrinkage mud makes the cushion cap and bridge pier form entirety.
The utility model has the advantage of structurally reasonable, main components can be prefabricated in advance, on-site consolidation, site operation speed
Degree is fast, meets the development trend of bridge industrialized construction；Pier top (hogging moment area) uses steel box-girder, has whole bridge both
Steel-concrete combines the structural advantages of Continuous Box Girder Bridge, and can effectively overcome steel-concrete combination Continuous Box Girder Bridge fulcrum attached
The unreasonable problem of nearly hogging moment area stress.Specifically:
1) good economy performance reduces bracket and template consumption, easy for construction, has saved construction cost；
2) stress performance is good, and pier top hogging moment area top plate uses steel (each pier top is all made of steel box girder segment), sufficiently
The examining tensile behavior of steel is utilized, avoids the arrangement many adverse effects of pier top prestressed strand bring, fundamentally solves
Steel-mixes the problem of combination beam pier top concrete cracking；
3) construction technology for using precast assembly, meets the industrialized development trend of bridge construction；Main components are pre-
Field processed is poured, is conserved, and can effectively ensure that construction quality；Cast-in-place concrete workload is smaller, and construction speed is fast, effectively
Shorten the construction period；
4) social benefit is good, energy-saving consumption-reducing, and low-carbon environment-friendly is low in the pollution of the environment；Road not line-break, right under work progress jackshaft
Existing traffic impact is small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the cross-section diagram of steel box girder segment in Fig. 1.
Fig. 3 is the cross-section diagram of steel-concrete combined box beam segment in Fig. 1.
Fig. 4 a is the cross-section diagram of precast concrete floorings in Fig. 3.
Fig. 4 b is the top view of Fig. 4 a.
Fig. 5 a is the cross-section diagram of pregroove marks section steel beam in Fig. 3.
Fig. 5 b is the top view of Fig. 5 a
Fig. 6 is the elevation of steel box girder segment and steel-concrete combined box beam segment connecting portion in Fig. 1.
Fig. 7 is the cross-section diagram of steel box girder segment and steel-concrete combined box beam segment connecting portion in Fig. 1.
Fig. 8 is the enlarged drawing of steel box girder segment and steel-concrete combined box beam segment connecting portion web, bottom plate in Fig. 1.
Specific embodiment
As shown in Figure 1, the novel steel-concrete of erection without scaffolding described in the utility model combines Continuous Box Girder Bridge, packet
The bridge pier 2 for including the cushion cap 1 of interval casting and being fixedly placed on each cushion cap 1, the top of each bridge pier 2 are mounted on support 3,
It is provided with steel-between adjacent two support 3 and mixes combined box beam segment 4；It is lifted with steel box girder segment 5 at the top of each support 3,
The binding site of combined box beam segment 4 and steel box girder segment 5 is mixed in steel-, using high-strength bolt+bis- between web and bottom plate
Face splice plate fillet weld connection structure, and top plate connection then uses the steel cell compartment structure of fill concrete.
The section structure of steel box girder segment 5 used in the utility model is as described in Figure 2, and steel-mixes the disconnected of combined box beam segment 4
Face structure is as shown in Figure 3；
The mixed combined box beam segment 4 of steel-is as precast concrete floorings 4.1(as shown in Fig. 4 a, Fig. 4 b) and prefabricated U-steel
Beam 4.2(is as shown in Fig. 5 a, Fig. 5 b) it is spliced, preformed groove 4.3 is poured after being reserved on precast concrete floorings 4.1, it is prefabricated
Connection peg 4.4 is welded on groove profile girder steel 4.2.Stitching portion uses peg+rear pouring concrete connection type: by pregroove marks
The connection peg 4.4 of section steel beam 4.2 pours in preformed groove 4.3 after protruding into precast concrete floorings 4.1, then pours after reserved
Cast-in-place slightly expanded concrete in slot 4.3 forms overall steel-and mixes combined box beam segment 4.
As shown in fig. 6, in its top plate junction, setting is welded with the steel cell compartment 5.2 of peg 5.1 when prefabricated steel box girder segment 5.
When jointing steel box girder segment 5 and steel-mix combined box beam segment 4, cast-in-place 5.2 inner concrete of steel cell compartment, by steel cell compartment 5.2
Peg 5.1 and the concrete being poured afterwards, the top plate for making steel box girder segment 5 and steel-mix combined box beam segment 4 are connected to become entirety；
And the connection that steel box girder segment 5 and steel-mix between the web and bottom plate of combined box beam segment 4 then uses high-strength bolt+two-sided spelling
Fishplate bar fillet weld connection structure 6, specific connection type is as shown in Figure 8: jointing steel box girder segment 5 and steel-mix combined box beam section
When 4 webs of section and bottom plate, adds splicing steel plate 6.1 in web/back plate connections two sides, be spaced and open up on splicing steel plate 6.1
There is connecting hole, high-strength connection bolt 6.2 is fitted in connecting hole；The periphery and web/bottom plate for splicing steel plate 6.1 pass through fillet weld
6.3 being welded as a whole.The structure that the steel box girder segment 5 and steel-that assembly is completed mix combined box beam segment 4 is as shown in Figure 7.
The connection of cushion cap and bridge pier (can be prefabricated) can be used grout sleeve+after pour the connection shape of high strength and no shrinting cement slurry
When pouring cushion cap, embedded bar is stretched out at the top of cushion cap, grout sleeve is embedded in bridge pier bottom when precast pier, is spliced for formula
When by embedded bar be inserted into grout sleeve in, and in grout sleeve be perfused high strength and no shrinting cement slurry form entirety.
It should be understood that Continuous Box Girder Bridge is combined for the novel steel-concrete of the erection without scaffolding of the utility model,
The connection method at each position includes but is not limited to the above connecting method: as steel box girder segment 5 and steel-mix combined box beam segment 4
Top connection, web are connected with bottom plate can also use other connection structures commonly used in the art, and cushion cap 1 and precast pier 2
Between connection can also be using other types of attachment and construction method.
Claims (3)
1. a kind of novel steel-concrete of erection without scaffolding combines Continuous Box Girder Bridge, cushion cap and fixed peace including interval casting
The bridge pier being placed on each cushion cap is mounted on support at the top of each bridge pier, and the mixed combination of steel-is provided between adjacent two support
Box girder segment；It is characterized by: being lifted with steel box girder segment at the top of each support, the steel-mixes combined box beam
The binding site of segment and steel box girder segment, web and bottom plate connect knot using high-strength bolt+two-sided splice plate fillet weld
Structure, top plate connection use the steel cell compartment structure of fill concrete.
2. the novel steel-concrete of erection without scaffolding according to claim 1 combines Continuous Box Girder Bridge, it is characterised in that:
The high-strength bolt+two-sided splice plate fillet weld connection structure includes being clamped in steel-to mix combined box beam segment and steel box girder segment
Web or the splicing steel plate of back plate connections two sides are spaced apart on the splicing steel plate and are equipped with connecting hole, in the connecting hole
It is fitted with high strong ties bolt；The periphery of the splicing steel plate is integrated with the web or bottom plate by fillet weld seam.
3. the novel steel-concrete of erection without scaffolding according to claim 1 combines Continuous Box Girder Bridge, it is characterised in that:
The connection of the cushion cap and bridge pier using grout sleeve+after pour the type of attachment of high strength and no shrinting cement slurry:, will when pouring cushion cap
Embedded bar stretches out at the top of cushion cap；Grout sleeve is embedded in bridge pier bottom when precast pier；When splicing, at the top of the cushion cap
Embedded bar be inserted into the grout sleeve of the bridge pier bottom, and in grout sleeve be perfused high strength and no shrinting cement slurry make institute
It states cushion cap and bridge pier forms entirety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821673284.0U CN208933811U (en) | 2018-10-16 | 2018-10-16 | A kind of novel steel-concrete combination Continuous Box Girder Bridge of erection without scaffolding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821673284.0U CN208933811U (en) | 2018-10-16 | 2018-10-16 | A kind of novel steel-concrete combination Continuous Box Girder Bridge of erection without scaffolding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208933811U true CN208933811U (en) | 2019-06-04 |
Family
ID=66724749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821673284.0U Active CN208933811U (en) | 2018-10-16 | 2018-10-16 | A kind of novel steel-concrete combination Continuous Box Girder Bridge of erection without scaffolding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208933811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108978434A (en) * | 2018-10-16 | 2018-12-11 | 河南省交通规划设计研究院股份有限公司 | A kind of Novel steel-is mixed to be combined Continuous Box Girder Bridge and its industrializes construction method without bracket |
| CN114016370A (en) * | 2021-12-09 | 2022-02-08 | 安徽省交通规划设计研究总院股份有限公司 | 'hysteresis type' narrow steel box composite beam and construction method thereof |
-
2018
- 2018-10-16 CN CN201821673284.0U patent/CN208933811U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108978434A (en) * | 2018-10-16 | 2018-12-11 | 河南省交通规划设计研究院股份有限公司 | A kind of Novel steel-is mixed to be combined Continuous Box Girder Bridge and its industrializes construction method without bracket |
| CN108978434B (en) * | 2018-10-16 | 2024-02-20 | 河南省交通规划设计研究院股份有限公司 | Bracket-free industrialized construction method of steel-concrete combined continuous box girder bridge |
| CN114016370A (en) * | 2021-12-09 | 2022-02-08 | 安徽省交通规划设计研究总院股份有限公司 | 'hysteresis type' narrow steel box composite beam and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108978434A (en) | A kind of Novel steel-is mixed to be combined Continuous Box Girder Bridge and its industrializes construction method without bracket | |
| CN101613997B (en) | Method for widening steel-concrete combination | |
| CN106013432B (en) | A kind of high ductility prefabricated integral frame interior joint connection structure and construction method | |
| CN104988844B (en) | Two times tensioning prestressing force assembled Wavelike steel webplate combination beam | |
| CN204282199U (en) | Pile-column concrete hollow pile bridge pier structure | |
| CN101768916A (en) | Lower flange improved corrugated steel web plate composite box girder and construction method thereof | |
| CN102877407B (en) | Concrete continuous box girder of corrugated steel web for curved bridge | |
| CN208685438U (en) | A kind of wet seam type of attachment of sectional type floorings | |
| CN1322202C (en) | Method for anti-cracking in hogging moment area of steel-concrete combined beam | |
| CN110258289A (en) | Prestressed concrete continuous box girder bridge laterally spells wide structure | |
| CN208933811U (en) | A kind of novel steel-concrete combination Continuous Box Girder Bridge of erection without scaffolding | |
| CN108951399A (en) | A kind of Single-box multi-chamber box beam bridge and its construction method | |
| CN210395128U (en) | Hollow core plate beam connection structure in bridge widening | |
| CN110644361A (en) | Steel-concrete composite beam bridge deck | |
| CN106869008A (en) | The composite bridge prefabricated bridge of dry type connection and its dry type connection method | |
| CN110042770A (en) | A method of using the original bridge of external prestressing steel Shu Tuokuan in length and breadth | |
| CN105951984B (en) | A kind of high ductility prefabricated integral frame mid-side node connection structure and construction method | |
| CN209162631U (en) | A kind of hinge seam sealing and connecting device | |
| CN209114299U (en) | A kind of Single-box multi-chamber box beam bridge | |
| CN106638265A (en) | Steel reinforced concrete beam rigid framework bridge | |
| CN103205930A (en) | Structure for continuous transformation of existing simply supported hollow slab girder bridge and construction method of structure | |
| CN103669193B (en) | A kind of laterally assembled Wavelike steel webplate combination T beam and construction method | |
| CN110158475A (en) | A kind of prefabricated assembled bridge substructure and its construction method | |
| CN205874960U (en) | Profiled sheet wave form steel web truss combination beam | |
| CN211312196U (en) | Steel-concrete composite beam bridge deck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |