CN202194059U - Prestressed reinforced concrete multi-ribbed hollow superposed box girder - Google Patents
Prestressed reinforced concrete multi-ribbed hollow superposed box girder Download PDFInfo
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- CN202194059U CN202194059U CN2011201688792U CN201120168879U CN202194059U CN 202194059 U CN202194059 U CN 202194059U CN 2011201688792 U CN2011201688792 U CN 2011201688792U CN 201120168879 U CN201120168879 U CN 201120168879U CN 202194059 U CN202194059 U CN 202194059U
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 20
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 239000004567 concrete Substances 0.000 claims description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 4
- 239000011383 glass concrete Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002457 bidirectional effect Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 210000002219 extraembryonic membrane Anatomy 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model discloses a prestressed reinforced concrete dense rib hollow superposed box girder, which consists of a plurality of prefabricated pre-tensioned prestressed reinforced concrete bidirectional ribbed hollow plate girders 1, and is characterized in that the bidirectional ribbed hollow plate girders 1 comprise a bottom plate 4, a side wall 5 and a face plate 6, thin-wall hollow boxes 7 are embedded among the bottom plate 4, the side wall 5 and the face plate 6 at equal intervals, the hollow plate girders 1 are provided with flanges 8 at the two sides of the bottom plate, and rib grooves 9 are transversely provided between the two thin-wall hollow boxes 7; the bottom plate 4 is provided with prestressed reinforcements 10 and structural reinforcements 11, the side wall 5 is provided with waist reinforcements 12 and stirrups 13, and the panel 6 is provided with compression reinforcements 14. When in construction, the prefabricated pre-tensioned prestressed reinforced concrete bidirectional ribbed hollow slab beam 1 is hoisted in place to automatically form the templates of the longitudinal and transverse rib beams 2 and the bridge deck 3, and then the cast-in-situ longitudinal and transverse rib beams 2 and the bridge deck 3 are utilized to connect the full bridge into a whole to form the assembled integral box girder bridge. The assembled integral box girder structure has the advantages of light dead weight, convenience in construction, good integrity, high rigidity, reasonable structural stress, low manufacturing cost and the like, and has very obvious technical and economic advantages compared with cast-in-place or prefabricated assembled structures in bridges with medium and small spans.
Description
Technical field:
The utility model relates to a kind of prestressed reinforced concrete multi-ribbed hollow folding case beam that is used for, strides for a short time the footpath bridge.
Background technology:
Combined type (being called superposed type again) member is meant and is watering the formed two-step pouring member of a part of concrete after again on the prefabricated units.The combined type member can be divided into two types according to the difference of its loading characteristic:
(1), a stage force group closes member
One stage force group closes member and is meant in the construction stage and has secure support at prefabricated units, can guarantee that the construction stage load of effect does not make prefabricated units stressed, and directly import support into.After treating that pouring concrete reaches the design strength grade behind the overlapping layers, remove again and support, build the global sections that the back forms by secondary and bear the load of whole effects.The calculating principle and the method for the box-like curved member of one stage force group are identical with common flexural member.The shear-carrying capacity considered combined member computational methods of face are calculated but it coincides, and note the different of overlapping layers and prefabricated units strength grade of concrete.
(2), stressed combined member of two stages
Stressed combined member of two stages is meant that the construction stage do not add support under prefabricated units, is born dead load and the working load of construction stage by prefabricated units; After treating the back pouring concrete reaching the design strength grade, on the stressed basis of prefabricated units (this moment working load majority removal) again, build the global sections that the back forms by secondary and continue to bear the dead load and the mobile load of second stage effect.Obviously the combined member that does not have the construction supported belongs to the manufacturing of two stages, the combining structure that two stages are stressed, and its stress performance and overall structure have than big-difference.
The concrete combined structure extensive use is wide width wing T section bridge, box-type section bridge and the bridge deck etc. of bridge construction.
The prestressed concrete composite beam bridge is striden in the application of footpath bridge China middle or small, shows as following advantage:
(1) main bearing member of structure can be prefabricated in the factory, and construction quality is easy to guarantee, the volume of prefabricated units is little, light weight, member transportation and installation are convenient;
(2) utilize prefabricated units to support and build the masterplate of bridge deck and diaphragm or on prefabricated bridge deck, directly build bridge deck concrete, can save the formwork engineering, save material, simplify construction;
(3) from structure tension performance, to compare with full precast assembly structure, combining structure can improve the integral rigidity and the anti-seismic performance of structure; Compare with stressed overall structure once, under the situation of the same quantity presstressed reinforcing steel of configuration, have only prefabricated units partly to bear pre-applied force in the combining structure, effective compressive pre-stress of setting up on the cross section is bigger, thereby can improve the crack resistance of structure.
Though adopt combining structure to have above-mentioned obvious advantage middle or small striding in the bridge of footpath; But composite beam bridge is sent out unhappy in China in recent years; Its main cause is that this structure need be carried out second coagulation soil and built; Can the combination of new-old concrete whole co-operation, is the problem that people worry the most.
The co-operation of pre-erection and cast-in-situ concrete layer in the compound beam is to lean on the shear-carrying capacity of bonding surface to guarantee.Therefore, designing the bonding surface of scientific and reasonable combining structure, is the whole cooperative key point that guarantees compound beam.
The utility model content:
The utility model provides a kind of form of structure of prestressed reinforced concrete multi-ribbed hollow folding case beam; This kind superposed type case beam; Make bed die through the two-way hollowcore slab with ribbing of prefabricated a kind of presstressed reinforcing steel concrete, behind its hoisted in position, just become the template of vertical, horizontal girt strip and bridge deck automatically; Utilize cast-in-place vertical, horizontal girt strip and bridge deck concrete that full-bridge is linked as integral body then, constitute the assembled integral box-girder bridge.This kind cast in place and precast construction has from heavy and light, easy construction, and good integrity, advantage such as cost is low is striden in the bridge of footpath middle or small, compares with cast-in-place or precast splice type structure, has fairly obvious technology economy advantage.
The technical scheme that the utility model adopts is: prestressed reinforced concrete multi-ribbed hollow folding case beam is made up of the some two-way hollow slab beams with ribbing of prefabricated pretensioned prestressing steel bar concrete; The two-way hollow slab beam with ribbing of its prefabricated pretensioned prestressing steel bar concrete comprises base plate, sidewall and panel; the thin-walled hollow box is embedded among base plate, sidewall and the panel equally spacedly as fetal membrane; described hollow slab beam leaves vertical edge of a wing in the base plate both sides, between sidewall and two thin-walled hollow boxes, leaves the cross rib groove.During construction; At first with behind the two-way hollow slab beam hoisted in position with ribbing of prefabricated pretensioned prestressing steel bar concrete; Just become the template of vertical, horizontal girt strip and bridge deck automatically; Utilize cast-in-place vertical, horizontal girt strip and bridge deck concrete that full-bridge is linked as integral body then, constitute the assembled integral box-girder bridge.
In order to guarantee that the two-way hollow slab beam with ribbing of prefabricated pretensioned prestressing steel bar concrete can reliably bear dead load and the working load of construction stage in the construction stage; Is furnished with prestressed reinforcement in its base plate; Be furnished with distributing bar in the edge of a wing of base plate, be furnished with waist muscle and stirrup in the sidewall, be furnished with compression reinforcement in the panel; Wherein the length on stirrup extending panel surface is no less than 10d (d is the diameter of stirrup) here, to strengthen being connected of precast hollow plate-girder and rear pouring concrete.
For alleviating the deadweight of the prefabricated two-way hollow slab beam with ribbing of pretensioned prestressing steel bar concrete, thin-walled hollow box wherein adopts light material to process, like light aggregate concrete, and glass concrete, plastic plate etc.
Because the base plate of the prefabricated two-way hollowcore slab with ribbing in the utility model leaves vertical edge of a wing; Laterally leave the rib groove; During construction, behind some the utility model hoisted in position, with the template that forms the two-way ribs girt strip automatically; Through cast-in-place two-way girt strip and bridge deck concrete full-bridge is linked as integral body then, constitutes the assembled integral box-girder bridge.This kind superposed type case beam not only can guarantee the whole co-operation of new and old concrete fully, and simultaneously, its biggest advantage is that the board-like bridge of variable simply supported beam is continuous beam bridge; And practiced thrift template and full framing, and it is simple to have construction technology, and speed of application is fast; Driving is steady, and rigidity is big, and structure stress is reasonable; Advantages such as construction quality is easy to assurance, and cost is low can be widely used in the middle or small footpath bridge of striding.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the utility model cross-section cutaway view.
Fig. 3 is the utility model side sectional view.
Fig. 4 is the utility model box-girder bridge moulding side sectional view.
The specific embodiment:
As can beappreciated from fig. 1; The utility model is made up of the some two-way hollow slab beams 1 with ribbing of prefabricated pretensioned prestressing steel bar concrete; Hollow slab beam 1 two-way with ribbing wherein comprises base plate 4, sidewall 5 and panel 6; thin-walled hollow box 7 is embedded between base plate 4, sidewall 5 and the panel 6 equally spacedly, and described hollow slab beam 1 leaves the edge of a wing 8 in the base plate both sides, laterally between two thin-walled hollow boxes 7, leaves rib groove 9; Be furnished with prestressed reinforcement 10 and distributing bar 11 in the described base plate 4, be furnished with waist muscle 12 and stirrup 13 in the sidewall 5, be furnished with compression reinforcement 14 in the panel 6.For strengthening being connected of precast hollow plate-girder and rear pouring concrete, wherein the length on stirrup 13 extending panels surface is no less than 10d (d is the diameter of stirrup) here; For alleviating the deadweight of the prefabricated two-way hollow slab beam with ribbing of pretensioned prestressing steel bar concrete, thin-walled hollow box 7 wherein adopts light material to process, like light aggregate concrete, and glass concrete, plastic plate etc.During construction; At first with behind two-way hollow slab beam 1 hoisted in position with ribbing of prefabricated pretensioned prestressing steel bar concrete; Just become the template of vertical, horizontal girt strip 2 and bridge deck 3 automatically; Utilize cast-in-place vertical, horizontal girt strip 2 and bridge deck 3 concrete that full-bridge is linked as integral body then, constitute the assembled integral box-girder bridge.
Claims (5)
1. prestressed reinforced concrete multi-ribbed hollow folding case beam; It is made up of the some two-way hollow slab beams with ribbing of prefabricated pretensioned prestressing steel bar concrete (1); It is characterized in that two-way hollow slab beam with ribbing (1) comprises prestressed reinforced concrete base plate (4), steel bar concrete sidewall (5) and steel bar concrete panel (6); thin-walled hollow box (7) is embedded between base plate (4), sidewall (5) and the panel (6) equally spacedly; the steel bar concrete edge of a wing (8) is left in described base plate (4) both sides, laterally between two thin-walled hollow boxes (7), leave rib groove (9).
2. prestressed reinforced concrete multi-ribbed hollow folding case beam according to claim 1; It is characterized in that: during construction; At first with behind the two-way hollow slab beam with ribbing of prefabricated pretensioned prestressing steel bar concrete (1) hoisted in position; Just become the template of vertical, horizontal girt strip (2) and bridge deck (3) automatically, utilize cast-in-place vertical, horizontal girt strip (2) and bridge deck (3) concrete that full-bridge is linked as integral body then, constitute the assembled integral box-girder bridge.
3. according to claim 1,2 described prestressed reinforced concrete multi-ribbed hollow folding case beams; It is characterized in that: the base plate (4) in the two-way hollow slab beam with ribbing of prefabricated pretensioned prestressing steel bar concrete (1) is a prestressed reinforced concrete, and sidewall (5) and panel (6) are the plain bars concrete.
4. according to claim 1,2 described prestressed reinforced concrete multi-ribbed hollow folding case beams; It is characterized in that: the thin-walled hollow box (7) in the two-way hollow slab beam with ribbing of prefabricated pretensioned prestressing steel bar concrete (1) is processed for light material; Like light aggregate concrete, glass concrete, plastic plate etc.
5. according to claim 1,2 described prestressed reinforced concrete multi-ribbed hollow folding case beams; It is characterized in that: be furnished with prestressed reinforcement (10) and distributing bar (11) in the base plate (4) in the two-way hollow slab beam with ribbing of prefabricated pretensioned prestressing steel bar concrete (1); Be furnished with waist muscle (12) and stirrup (13) in the sidewall (5); Be furnished with compression reinforcement (14) in the panel (6), wherein the length on stirrup (13) extending panel (6) surface is no less than 10d, and d is the diameter of stirrup here.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201688792U CN202194059U (en) | 2011-05-25 | 2011-05-25 | Prestressed reinforced concrete multi-ribbed hollow superposed box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201688792U CN202194059U (en) | 2011-05-25 | 2011-05-25 | Prestressed reinforced concrete multi-ribbed hollow superposed box girder |
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| Publication Number | Publication Date |
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| CN202194059U true CN202194059U (en) | 2012-04-18 |
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| CN2011201688792U Expired - Fee Related CN202194059U (en) | 2011-05-25 | 2011-05-25 | Prestressed reinforced concrete multi-ribbed hollow superposed box girder |
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| CN107620416A (en) * | 2017-10-13 | 2018-01-23 | 湖南标迪夫节能科技有限公司 | A kind of assembled arthitecutral structure of reinforced concrete combination |
| CN107620417A (en) * | 2017-10-13 | 2018-01-23 | 湖南标迪夫节能科技有限公司 | A kind of cavity board member of the assembling type steel structure with fire-fighting function |
| CN107620384A (en) * | 2017-10-13 | 2018-01-23 | 湖南标迪夫节能科技有限公司 | A kind of assembled steel reinforced concrete composite frame structure with cap |
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| CN107882238A (en) * | 2017-10-13 | 2018-04-06 | 湖南标迪夫节能科技有限公司 | A kind of assembling type steel structure laterally regenerates rib floor |
| CN107882231A (en) * | 2017-10-13 | 2018-04-06 | 湖南标迪夫节能科技有限公司 | A kind of assembled cavity floor with cap |
| CN107965078A (en) * | 2017-10-13 | 2018-04-27 | 湖南标迪夫节能科技有限公司 | A kind of assembled arthitecutral structure prefabricated using cavity body |
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