CN108360362A - Assembled simple supported box beam end floor beam constructs - Google Patents
Assembled simple supported box beam end floor beam constructs Download PDFInfo
- Publication number
- CN108360362A CN108360362A CN201810326003.2A CN201810326003A CN108360362A CN 108360362 A CN108360362 A CN 108360362A CN 201810326003 A CN201810326003 A CN 201810326003A CN 108360362 A CN108360362 A CN 108360362A
- Authority
- CN
- China
- Prior art keywords
- end floor
- box beam
- floor beam
- box
- prefabricated
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 claims abstract description 20
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 238000009415 formwork Methods 0.000 abstract description 9
- 230000002787 reinforcement Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 210000001364 upper extremity Anatomy 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Abstract
The present invention relates to a kind of assembled simple supported box beam end floor beam constructions, including box beam, box beam to be made of the web of the top plate on top, the bottom plate of lower part and both sides, and web outside is provided with laterally vertical prefabricated end floor beam；Bulkhead in laterally vertical case is provided in box beam.This end floor beam scheme facilitates prefabricated box girder inner formwork to remove, and accelerates construction progress, while being conducive to the pouring quality of end floor beam, it is ensured that the stress safety in later stage.
Description
Technical field
The present invention relates to bridge construction field of engineering technology, and in particular to a kind of assembled simple supported box beam end floor beam construction.
Background technology
Assembled simple supported box beam is a kind of common bridge type in highway bridge, because box beam torsional rigidity is big, holistic resistant behavior
It is good, and quick construction, it is simple for process, just more and more applied.Counter-force is concentrated in order to undertake beam-ends torque and bearing, is needed
End floor beam is set in beam-ends.
The end floor beam used at present uses the continuous mode of indoor and outdoor, indoor and outdoor that end floor beam is arranged simultaneously, and thickness is identical,
General requirement is integral prefabricated with girder.The problem is that：Box section is silent cross section type, when prefabricated box -beam, is not only needed
External mold is set, and interior also needs to setting internal model, and precast beam both ends are designed with end floor beam, confined air is formed after concreting
Between, indoor internal model can not remove.Unit in charge of construction, which considered to slot in box beam top plate, takes out template, extremely difficult, top plate slot of constructing
Mouth Quality of recovery is poor, influences structure stress.Therefore it needs to study a kind of assembled simple supported box beam easy for construction, safe and reliable
End floor beam constructs.
Invention content
The object of the present invention is to provide a kind of assembled simple supported box beam end floor beam constructions, overcome the deficiencies of existing technologies.
The technical solution adopted in the present invention is：
Assembled simple supported box beam end floor beam constructs, it is characterised in that：
Including box beam, box beam is made of the web of the top plate on top, the bottom plate of lower part and both sides, and web outside is provided with Horizontal vertical
Straight prefabricated end floor beam；
Bulkhead in laterally vertical case is provided in box beam.
The bottom plate of box beam uniformly thickeies from inside to outside, enables in case that cross section gradually tapers up from inside to outside.
It is provided on box beam top plate in case on the outside of bulkhead and reserves notch for carrying out the secondary beam-ends top plate poured.
Prefabricated end floor beam side and top plate are coplanar vertically.
Prefabricated end floor beam bottom surface is higher than bottom plate.
Box beam and the forming of prefabricated end floor beam integral concreting.
Bulkhead is fixed on by mortar in case in case.
The present invention has the following advantages：
In the present invention, end floor beam is provided only on the outside of box beam, and prefabricated crossbeam is not provided in chamber, only after box girder inner formwork removing,
It is secondary to pour bulkhead concrete.End floor beam and box beam are prefabricated simultaneously on the outside of box beam, and indoor not prefabricated end floor beam is hollow construction.
The upper and lower edge main reinforcement of end floor beam is separately positioned on box beam top, in bottom plate, does not interfere with the setting of box girder inner formwork.It is leaned in box beam top plate
Setting length on the outside of the crossbeam upper limb main reinforcement of proximal end（Laterally）80cm, it is wide（Along bridge to）The reserved notch of 15cm or so, to pour two
Phase concrete, vertically and horizontally reinforcing bar must not block top plate at notch.Bulkhead is individually prefabricated, after box girder inner formwork removing, uses mortar
Bulkhead is fixed into position shown in Fig. 2, and after end mould is arranged in beam-ends, reserve notch 1 from beam-ends top plate to pour plug mixed
Solidifying soil.This end floor beam scheme facilitates prefabricated box girder inner formwork to remove, and accelerates construction progress, while be conducive to end floor beam pours matter
Amount, it is ensured that the stress safety in later stage.
Description of the drawings
Fig. 1 is prefabricated case beam end floor beam perspective view.
Fig. 2 is prefabricated case beam end floor beam longitudinal sectional drawing.
Fig. 3 is prefabricated case beam end floor beam transverse cross-sectional view.
In figure, 1- beam-ends top plates reserve notch；Bulkhead in 2- casees；The prefabricated end floor beams of 3-, 4- are poured for bis- times.
Specific implementation mode
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of assembled simple supported box beam end floor beam construction, including box beam, the bottom plate of box beam are equal from inside to outside
Even thickening, enables in case that cross section gradually tapers up from inside to outside.Box beam by the top plate on top, the bottom plate of lower part and both sides web group
At web outside is provided with laterally vertical prefabricated end floor beam.Box beam and the forming of prefabricated end floor beam integral concreting.Prefabricated end
Crossbeam side and top plate are coplanar vertically, and bottom surface is higher than bottom plate.
Bulkhead in laterally vertical case is provided in box beam, bulkhead is fixed on by mortar in case in case.
It is provided on box beam top plate in case on the outside of bulkhead and reserves notch for carrying out the secondary beam-ends top plate poured.
When construction：
1）Assembling reinforcement sets inner and outer template, prefabricated case beam and end floor beam, and beam is reserved at crossbeam upper limb main reinforcement in top plate
Top plate is held to reserve notch 1；
2）Bulkhead 2 in precast box.
3）External mold is removed, internal model is removed from box beam both ends.
4）Bulkhead in case 2 is arranged in chamber, and mortar blocks gap.
5）Beam-ends end mould is set.
6）End socket concrete and reserved notch concrete are poured from reserving notch 1 from beam-ends top plate, pays attention to vibration compacting.
7）After concrete reaches design strength, end mould is removed, precast beam construction finishes.
In the present invention, end floor beam is provided only on the outside of box beam, and prefabricated crossbeam is not provided in chamber, is only removed in box girder inner formwork
Afterwards, secondary to pour bulkhead concrete.End floor beam and box beam are prefabricated simultaneously on the outside of box beam, and indoor not prefabricated end floor beam is hollow structure
It makes.The upper and lower edge main reinforcement of end floor beam is separately positioned on box beam top, in bottom plate, does not interfere with the setting of box girder inner formwork.In box beam top plate
The setting length on the outside of end floor beam upper limb main reinforcement（Laterally）80cm, it is wide（Along bridge to）The reserved notch of 15cm or so, to pour
Second stage concrete, vertically and horizontally reinforcing bar must not block top plate at notch.Bulkhead is individually prefabricated, after box girder inner formwork removing, uses sand
Slurry fixes bulkhead, and after end mould is arranged in beam-ends, reserve notch 1 from beam-ends top plate from pour bulkhead concrete.Local terminal is horizontal
Beam scheme facilitates prefabricated box girder inner formwork to remove, and accelerates construction progress, while being conducive to the pouring quality of end floor beam, it is ensured that the later stage
Stress safety.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, it is that claim of the invention is covered.
Claims (7)
1. assembled simple supported box beam end floor beam constructs, it is characterised in that：
Including box beam, box beam is made of the web of the top plate on top, the bottom plate of lower part and both sides, and web outside is provided with Horizontal vertical
Straight prefabricated end floor beam（3）；
Bulkhead in laterally vertical case is provided in box beam（2）.
2. assembled simple supported box beam end floor beam construction according to claim 1, it is characterised in that：
The bottom plate of box beam uniformly thickeies from inside to outside, enables in case that cross section gradually tapers up from inside to outside.
3. assembled simple supported box beam end floor beam construction according to claim 1, it is characterised in that：
Bulkhead in case（2）It is provided on the box beam top plate in outside and reserves notch for carrying out the secondary beam-ends top plate poured（1）.
4. assembled simple supported box beam end floor beam construction according to claim 1, it is characterised in that：
Prefabricated end floor beam（3）Side is coplanar vertically with top plate.
5. assembled simple supported box beam end floor beam construction according to claim 1, it is characterised in that：
Prefabricated end floor beam（3）Bottom surface is higher than bottom plate.
6. assembled simple supported box beam end floor beam construction according to claim 1, it is characterised in that：
Box beam and prefabricated end floor beam（3）Integral concreting shapes.
7. assembled simple supported box beam end floor beam construction according to claim 1, it is characterised in that：
Bulkhead in case（2）It is fixed in case by mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326003.2A CN108360362A (en) | 2018-04-12 | 2018-04-12 | Assembled simple supported box beam end floor beam constructs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326003.2A CN108360362A (en) | 2018-04-12 | 2018-04-12 | Assembled simple supported box beam end floor beam constructs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108360362A true CN108360362A (en) | 2018-08-03 |
Family
ID=63008034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810326003.2A Pending CN108360362A (en) | 2018-04-12 | 2018-04-12 | Assembled simple supported box beam end floor beam constructs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108360362A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205943A (en) * | 2019-06-29 | 2019-09-06 | 中国二十二冶集团有限公司 | The construction method of prefabricated freely-supported small box girder end floor beam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013142226A (en) * | 2012-01-10 | 2013-07-22 | Sumitomo Mitsui Construction Co Ltd | Construction method for box girder bridge |
| CN203144880U (en) * | 2013-04-12 | 2013-08-21 | 上海市城市建设设计研究总院 | Box girder structure with end portion thickened |
| CN104532754A (en) * | 2015-01-13 | 2015-04-22 | 中铁二局股份有限公司 | Prestress concrete box girder end sealing formwork construction method |
| CN204491397U (en) * | 2014-12-30 | 2015-07-22 | 上海浦东建筑设计研究院有限公司 | A kind of Mid and minor spans pretensioned prestressing steel bar concrete has just connect small box girder structure |
| CN208038999U (en) * | 2018-04-12 | 2018-11-02 | 中交第一公路勘察设计研究院有限公司 | A kind of assembled simple supported box beam end floor beam construction |
-
2018
- 2018-04-12 CN CN201810326003.2A patent/CN108360362A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013142226A (en) * | 2012-01-10 | 2013-07-22 | Sumitomo Mitsui Construction Co Ltd | Construction method for box girder bridge |
| CN203144880U (en) * | 2013-04-12 | 2013-08-21 | 上海市城市建设设计研究总院 | Box girder structure with end portion thickened |
| CN204491397U (en) * | 2014-12-30 | 2015-07-22 | 上海浦东建筑设计研究院有限公司 | A kind of Mid and minor spans pretensioned prestressing steel bar concrete has just connect small box girder structure |
| CN104532754A (en) * | 2015-01-13 | 2015-04-22 | 中铁二局股份有限公司 | Prestress concrete box girder end sealing formwork construction method |
| CN208038999U (en) * | 2018-04-12 | 2018-11-02 | 中交第一公路勘察设计研究院有限公司 | A kind of assembled simple supported box beam end floor beam construction |
Non-Patent Citations (3)
| Title |
|---|
| 李国豪: "公路桥梁荷载横向分布计算", 31 December 1977, 人民交通出版社, pages: 35 * |
| 王浩: "浅谈预制箱梁标准化施工及控制要点", no. 3, pages 70 - 73 * |
| 金圣强: "预制箱梁质量通病原因分析及预防措施", no. 17, pages 182 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205943A (en) * | 2019-06-29 | 2019-09-06 | 中国二十二冶集团有限公司 | The construction method of prefabricated freely-supported small box girder end floor beam |
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