CN104963276B - A kind of steel bamboo combined box beam - Google Patents
A kind of steel bamboo combined box beam Download PDFInfo
- Publication number
- CN104963276B CN104963276B CN201510349898.8A CN201510349898A CN104963276B CN 104963276 B CN104963276 B CN 104963276B CN 201510349898 A CN201510349898 A CN 201510349898A CN 104963276 B CN104963276 B CN 104963276B
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- China
- Prior art keywords
- bamboo
- steel
- top board
- base plate
- box beam
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Abstract
The invention discloses a kind of steel bamboo combined box beam, including top board, and at least 1 base plate being located at below described top board, all it is connected by two symmetrically arranged Wavelike steel webplates between each base plate with described top board, described top board is the most contour by several, and the monolithic bamboo slab rubber that length is arranged along bridge direction of traffic is formed by deformed bar compression, described base plate is the most contour by several, and the monolithic bamboo slab rubber that length is arranged along bridge width direction is formed by deformed bar compression, all it is connected by shearing resistance steel disc between the most described Wavelike steel webplate with described top board and described base plate；The invention has the advantages that, having given full play to the anti-flexing of Wavelike steel webplate, anti-crack ability and bamboo slab rubber resistance to tension, structural integrity is good, the most easy to crack, and site operation is easy, and the cycle is short, and material environment friendly is durable, and can meet the requirement across footpath bridge of all kinds of difference.
Description
Technical field
The invention belongs to bridge structure field, be specifically related to a kind of steel bamboo combined box beam.
Background technology
Corrugated steel web plate composite box bridge is
20
Century
80
A kind of novel bridge that age occurs, is the Novel steel of a kind of corrugated sheet steel displacement prestressed concrete box girder concrete web
-
Concrete combined structure.Compared with conventional structure, it is advantageous in that its dead load is lighter, it is possible to reduce the quantities of substructure, and then reduces its project total cost；The problem avoiding cracking in webs, structure durability can be good.But the joint portion of Wavelike steel webplate is more, its connecting structure is complex, causes in base plate and top board casting process, and template and support are installed highly difficult, and difficulty of construction is bigger；And concrete floor easily produces direct tension cracking, durability is poor.
The top board of existing corrugated steel web plate composite box girder and the main material Reinforced Concrete Materials of base plate, Chang An University's once research Timber sections substitutes concrete, propose steel and wood composite box beam, but its steel web and plank junction still use cast-in-place concrete, it is impossible to solve the problem that template construction is difficult；And China's timber resources is rare, area of woods only has per capita
0.13
Square hectare, less than world average level
1/4
, occupy the world
134
Position, statistical data shows the subject matter that China forest exists: total resources is not enough；Forest quality is the highest, skewness；The forest reserves increases slowly, and present domestic timber structure is seldom applied.
Bamboo wood and the following characteristics of bamboo structure:
1
, China's bamboo resource enrich, occupy the world the first.And bamboo wood fast growth, the cycle of becoming a useful person is little；
2
, tensile strength high, the tensile strength of bamboo wood up to
370
MPa
, be equivalent to
HRB400
Steel tensile strength, the problem that can solve bottom slab crack well, preferably improves the durability of box beam；
3
, resistance capacity to deformation strong, its elastic modelling quantity up to
2000MPa
, about timber
2
Times, can preferably compatible deformation with steel；
4
, good anti-pressure ability, experimental verification bamboo wood comprcssive strength exists
47MPa
With
62.8MPa
Between, exceed well over China existing
GB50010-2010
" Code for design of concrete structures "
C30
Concrete crushing strength design load
(14.3
MPa)
；
5
, bamboo wood be green recyclable materials, recoverable, little to environmental injury, meet the requirement of sustainable development.
Based on bamboo wood have above many a little, national forestry department supports promoting the use of of bamboo slab rubber the most energetically.
Summary of the invention
The present invention seeks to: providing a kind of and given full play to the anti-flexing of Wavelike steel webplate, anti-crack ability and bamboo slab rubber resistance to tension, structural integrity is good, the most easy to crack, site operation is easy, cycle is short, and material environment friendly is durable, and can meet all kinds of difference steel bamboo combined box beam across footpath bridge requirement.
The technical scheme is that a kind of steel bamboo combined box beam, including top board, and at least
1
The individual base plate being located at below described top board, all it is connected by two symmetrically arranged Wavelike steel webplates between each base plate with described top board, described top board is the most contour by several and length is passed through deformed bar compression along the monolithic bamboo slab rubber that bridge direction of traffic is arranged and formed, the monolithic bamboo slab rubber that described base plate is the most contour by several and length is arranged along bridge width direction is compressed by deformed bar and forms, and is all connected by shearing resistance steel disc between the most described Wavelike steel webplate with described top board and described base plate.
As preferred technical scheme, being provided with the installing hole passed for deformed bar in described top board and described base plate, this deformed bar level is laid in sustained height and two ends pier nose anchorage is fixed.
As preferred technical scheme, described monolithic bamboo slab rubber is formed by several strip bamboo clappers joggles, and is provided with epoxide-resin glue at the joggle of neighboring strips shape bamboo clappers.
As preferred technical scheme, groove width it is provided with along entering the tongue-and-groove that groove direction is gradually increased in the junction of described monolithic bamboo slab rubber and described Wavelike steel webplate, in described shearing resistance steel disc inserts tongue-and-groove and being fixed by epoxide-resin glue, described Wavelike steel webplate and described shearing resistance steel disc are connected by twin fillet wolt.
As preferred technical scheme, described Wavelike steel webplate be shaped as zigzag or sinusoidal wave form, the thickness of slab of described Wavelike steel webplate is
8-25mm
, and inside it, bending radius is more than thickness of slab
15
Times.
The invention have the advantage that
1
. the present invention has given full play to the anti-flexing of Wavelike steel webplate, anti-crack ability and bamboo slab rubber resistance to tension, and structural integrity is good, the most easy to crack, and site operation is easy, and the cycle is short, and material environment friendly is durable, and can meet all kinds of difference across footpath bridge requirement；
2
. the monolithic bamboo slab rubber of the present invention is fixed by deformed bar, by arrange the prestress square of different top boards and base plate to, loss of prestress can be effectively reduced, improve prestressed service efficiency；
3
. the monolithic bamboo slab rubber of the present invention is formed by several strip bamboo clappers joggles, pulling force, pressure, shearing and Moment can be born at joggle simultaneously, and there is good elasticity, show stronger varied rigid link characteristic, and allow to produce certain deformation, it is possible to absorb the vibrational energy that partial automobile dynamic load produces；And bamboo wood has good physical and mechanical property and processing characteristics, the problem that can solve box beam bottom slab crack well, preferably improves the durability of box beam；
4
. the present invention saves construction material, improve economic indicator, after using Wavelike steel webplate and bamboo slab rubber to replace concrete, superstructure weight significantly reduces, decrease substructure quantities, thus reduce project total cost, be greatly improved efficiency of construction by the form of construction work of prefabrication, on-site consolidation simultaneously, and material environmental protection, recoverable, it is possible to substitute conventional concrete box beam；
5
. the present invention reduces field operation, accelerate construction progress, steel bamboo combined box beam carries out prefabricated processing and welding in factory, then transporting directly to job site, to carry out lifting fixing, in work progress, can reduce template, support and concreting engineering in large quantities, thus convenient construction, reduction of erection time；
6
. bamboo wood that the present invention makes full use of and the respective material advantage of Wavelike steel webplate, by mosaic shearing resistance steel disc effectively by integral to steel, the combination of bamboo bi-material, it is to avoid many defects of conventional box beam.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Figure
1
Perspective view for the present invention；
Figure
2
Top board structure schematic diagram for the present invention；
Figure
3
Base arrangement schematic diagram for the present invention；
Figure
4
The structural representation being connected with Wavelike steel webplate for top board of the present invention；
Figure
5
Single band Wavelike steel webplate structural representation for the present invention；
Wherein:
1
Top board,
2
Base plate,
3
Wavelike steel webplate,
4
Monolithic bamboo slab rubber,
5
Deformed bar,
6
Shearing resistance steel disc,
7
Pier nose anchorage,
8
Twin fillet wolt.
Detailed description of the invention
Embodiment: with reference to figure
1
Extremely
4
Shown in, a kind of steel bamboo combined box beam, including top board
1
, and
2
Individual it is located at top board
1
The base plate of lower section
2
, each base plate
2
With top board
1
Between all by two symmetrically arranged Wavelike steel webplates
3
Connect, top board
1
The monolithic bamboo slab rubber that and length the most contour by several is arranged along bridge direction of traffic
4
Pass through deformed bar
5
Compression forms, base plate
2
The monolithic bamboo slab rubber that and length the most contour by several is arranged along bridge width direction
4
Pass through deformed bar
5
Compression forms, simultaneously Wavelike steel webplate
3
With top board
1
And base plate
2
Between all by shearing resistance steel disc
6
Connect.
The present invention is at top board
1
And base plate
2
Inside it is provided with for deformed bar
5
The installing hole passed, this deformed bar
5
Level is laid in sustained height and two ends pier nose anchorage
7
Fixing, this deformed bar
5
Use domestic
25
Number and
32
Number finish rolling deformed bar.
The monolithic bamboo slab rubber of the present invention
4
Formed by several strip bamboo clappers joggles, and be provided with epoxide-resin glue, span of bridge at the joggle of neighboring strips shape bamboo clappers
40m
, and strip bamboo clappers length is generally no greater than
4m
, top board at least needs
10
Individual strip bamboo clappers joggle, and use epoxide-resin glue to increase the rigidity of connection at joggle, resists moment of torsion effect that may be present, should stagger setting in the most adjacent joggle position；For preventing top board
1
Shrink and cause loss of prestress, top board
1
Monolithic bamboo slab rubber
4
Placed longitudinally, for preventing base plate for erectting
2
Too small deformed bar
5
Length causes bigger loss of prestress, base plate
2
Monolithic bamboo clappers
4
Laterally disposed for erectting.
The present invention is at monolithic bamboo slab rubber
4
And Wavelike steel webplate
3
Junction be provided with groove width along entering the tongue-and-groove that groove direction is gradually increased, shearing resistance steel disc
6
Insertion tongue-and-groove is interior and is fixed by epoxide-resin glue, Wavelike steel webplate
3
With shearing resistance steel disc
6
Pass through twin fillet wolt
8
Connect, this shearing resistance steel disc
6
For
1-2cm
Thick steel plate.
Wavelike steel webplate of the present invention
3
Be shaped as zigzag or sinusoidal wave form, use
Q345
Steel clod wash processing and fabricating, in order to adapt to the different needs across footpath of bridge, carries out Lengthwise joint by the steel plate after cold working, main based on submerged-arc welding in factory,
CO
2
Gas shielded arc welding is auxiliary.Welding material is selected
HJ431
The solder flux of model, a diameter of
4.0mm
's
JW
—
1
；Site Welding mainly with
CO
2
Gas shielded arc welding is main, and manual welding electricity is auxiliary, and welding rod is used
506
High-carbon steel welding rod, weldingvoltage will be through scene test, Wavelike steel webplate
3
Thickness of slab be
8-25mm
, and inside it, bending radius is more than thickness of slab
15
Times.
The making of steel bamboo combined box beam of the present invention can be divided into four big steps, specific as follows:
One, bamboo slab rubber monolithic finished product is made:
1
) Phyllostachys pubescens Mazei ex H.de Lebaie is fabricated to equal thickness bamboo chip
Former bamboo is cut into slices, removes outermost layer and the relatively low innermost layer of intensity, carry out steaming and decocting softening, then heat pressurization, arc bamboo block is rolled into plane, processed equal thickness bamboo chip through two-sided thicknesser afterwards.
) connect bamboo chip
With rope, bamboo chip is coupled together, make bamboo mat or bamboo curtain splint shape, prepare for following group of germ ring joint.
) be exposed to the sun, sizing is dried
Bamboo curtain splint or bamboo mat shape bamboo chip are dried, kills the insect in bamboo wood and remove moisture removal, Texturized in order to prevent from laterally producing, it is necessary to use technique and the equipment of high-pressure drying.
) bamboo chip applying glue
Use four rollers glue spreader two-sided painting water-soluble phenolic resin adhesive appropriate to bamboo chip roller, adhesive can add
1%-3%
Flour, Semen Glycines powder etc. make filler.
) be dried
After the bamboo chip applying glue of bamboo curtain splint or bamboo mat shape fully, airing to be carried out.
) assembly
By the bamboo curtain splint of airing or bamboo mat in strict accordance with symmetry principle, i.e. odd-level principle and the orthogonal principle of adjacent layer bamboo chip texture carries out assembly.
) carry out precompressed and hot pressing
Precompressed: the defect such as the folded core that causes to prevent slab from producing displacement when plate built-in to hot press, gap, after assembly before hot pressing, will at room temperature carry out precompressed so that it is be bonded into an integral material to slab.
Hot pressing: using and heat up gluing technique, its hot pressing temperature is
140
About DEG C, unit pressure is
2.5-3.0MPa
, hot pressing time is pressed sheet material finished product thickness and is calculated, generally
1.1min/mm
。
) sheet material cools down and surface processes
Sheet material after hot pressing first cools down, and carries out surface reason, remove irregular part after cooling.
Two, bamboo matter top board and base plate are made:
1
) making of monolithic bamboo slab rubber, the height of monolithic bamboo slab rubber is determined by bridge load size, according to design, above-mentioned sheet material is required that cutting is polished into strip bamboo clappers, carry out Lengthwise joint by dovetail again and meet span of bridge requirement, dovetail is made up of tongue-and-groove and tenon, can efficiently reduce the weakening to bamboo clappers intensity, should stagger setting in adjacent joggle position；
2
) perforate on monolithic bamboo slab rubber, pass for deformed bar, monolithic bamboo slab rubber arranges tongue-and-groove, for installing fixing shearing resistance steel disc；
3
) many monolithic bamboo slab rubber are erect placement, make their shape integral by applying longitudinal prestressing, make top board and base plate, deformed bar and pier nose anchorage are carried out preservative treatment simultaneously；
4
) the shearing resistance steel disc of prior coated epoxide-resin glue is buckled in tongue-and-groove, integral by shape of colding pressing.
Three, Wavelike steel webplate is made:
1
) the choosing of mother metal
The shape of Wavelike steel webplate can be zigzag or trapezoidal, uses
Q345
Steel clod wash processing and fabricating, before Wavelike steel webplate uses cold working to make, should carry out engineer testing, it is desirable to fillet outward flange must not have crackle；Clod wash is processed, and temperature is higher than
-5
DEG C, after clod wash, ballistic work is not less than mother metal, strictly controls nitrogen content.
) clod wash processing
The plain plate selected is made the waveform of needs by cold working, and Wavelike steel webplate is mainly made up of straight plate section, tilted plate section and arc section, specific configuration such as figure
5
Shown in.In figure
b
It is the wavelength of a wave band,
h
For wave height,
t
For thickness of slab,
R
For bending radius inside Wavelike steel webplate.The requirement of thickness of slab steel the to be met web minimum thickness of Wavelike steel webplate, generally
8mm
, maximum gauge needs to be determined by calculating.Straight plate section is the most identical with tilted plate section length, and wave height is substantially distributed in tilted plate section length ratio
0.4~0.6
Between.
) spreading of Wavelike steel webplate
In order to adapt to the different needs across footpath of bridge, the steel plate after cold working is carried out Lengthwise joint, main based on submerged-arc welding in factory,
O
2
Gas shielded arc welding is auxiliary.Welding material is selected
HJ431
The solder flux of model, a diameter of
4.0mm
's
JW
—
1
；Site Welding mainly with
CO
2
Gas shielded arc welding is main.Manual welding electricity is auxiliary, and welding rod is used
506
High-carbon steel welding rod, weldingvoltage will be through scene test.
Four, steel bamboo combined box beam integral assembling:
1
) location lifting
According to design, the top board processed, base plate and Wavelike steel webplate are required that lifting is in place.
) connect and fix
Being welded into a whole with Wavelike steel webplate by shearing resistance steel disc by welding, form complete steel bamboo combined box beam, concrete weld seam form uses tongue and groove two-sided welding.Steel bamboo combined box beam can be single box, can be multi-tank；And Wavelike steel webplate can be with slant setting, it is also possible to vertically place.
) preservative treatment
After welding, it is necessary to butt welded seam carries out craft up hill and dale or powertool cleaning, is then processed by shot blasting, finally brush iron oxide red anticorrosive paint.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by any person skilled in the art.Therefore, art has all equivalence modification or changes that usually intellectual is completed under without departing from disclosed spirit and technological thought such as, must be contained by the claim of the present invention.
Claims (5)
1. a steel bamboo combined box beam, including top board (1), and at least 1 base plate (2) being located at described top board (1) lower section, it is characterized in that, all it is connected by two symmetrically arranged Wavelike steel webplates (3) between each base plate (2) with described top board (1), described top board (1) is the most contour by several, and the monolithic bamboo slab rubber (4) that length is arranged along bridge direction of traffic is formed by deformed bar (5) compression, described base plate (2) is the most contour by several, and the monolithic bamboo slab rubber (4) that length is arranged along bridge width direction is formed by deformed bar (5) compression, all it is connected by shearing resistance steel disc (6) between the most described Wavelike steel webplate (3) with described top board (1) and described base plate (2).
Steel bamboo combined box beam the most according to claim 1, it is characterized in that, being provided with the installing hole passed for deformed bar (5) in described top board (1) and described base plate (2), this deformed bar (5) level is laid in sustained height and two ends pier nose anchorage (7) are fixed.
Steel bamboo combined box beam the most according to claim 1, it is characterised in that described monolithic bamboo slab rubber (4) is formed by several strip bamboo clappers joggles, and is provided with epoxide-resin glue at the joggle of neighboring strips shape bamboo clappers.
Steel bamboo combined box beam the most according to claim 1, it is characterized in that, groove width it is provided with along entering the tongue-and-groove that groove direction is gradually increased in the junction of described monolithic bamboo slab rubber (4) and described Wavelike steel webplate (3), in described shearing resistance steel disc (6) inserts tongue-and-groove and being fixed by epoxide-resin glue, described Wavelike steel webplate (3) and described shearing resistance steel disc (6) are connected by twin fillet wolt (8).
Steel bamboo combined box beam the most according to claim 1, it is characterised in that described Wavelike steel webplate (3) be shaped as zigzag or sinusoidal wave form, the thickness of slab of described Wavelike steel webplate (3) is 8-25mm, and inside it bending radius more than 15 times of thickness of slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349898.8A CN104963276B (en) | 2015-06-23 | 2015-06-23 | A kind of steel bamboo combined box beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349898.8A CN104963276B (en) | 2015-06-23 | 2015-06-23 | A kind of steel bamboo combined box beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963276A CN104963276A (en) | 2015-10-07 |
| CN104963276B true CN104963276B (en) | 2017-01-04 |
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ID=54217351
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|---|---|---|---|
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| Country | Link |
|---|---|
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714983A (en) * | 2016-02-25 | 2016-06-29 | 南京林业大学 | Fireproof I-shaped high-strength bamboo laminated wood beam and preparation method thereof |
| CN105735104B (en) * | 2016-02-25 | 2018-01-12 | 南京林业大学 | The high-strength bamboo wood beam of box and preparation method |
| CN108221709B (en) * | 2018-01-08 | 2019-10-29 | 清华大学 | A kind of corollary equipment and construction method for overbridge incremental launching construction |
| CN109112945B (en) * | 2018-10-17 | 2024-02-13 | 苏州昆仑绿建木结构科技股份有限公司 | Bamboo wood and steel combined box girder based on bolted connection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201447662U (en) * | 2009-09-09 | 2010-05-05 | 长安大学 | Steel grider combined bridge deck system structure of staggered superimposed sheet |
| JP5464350B2 (en) * | 2010-03-03 | 2014-04-09 | 国立大学法人秋田大学 | Wooden bridge using prestressed wood deck |
| CN202865732U (en) * | 2012-09-20 | 2013-04-10 | 长安大学 | Steel and wood combination box girder based on corrugated steel webs |
| CN102828467B (en) * | 2012-09-20 | 2014-06-11 | 长安大学 | Corrugated steel web-based steel-wood combined box girder |
| CN202881844U (en) * | 2012-10-26 | 2013-04-17 | 长安大学 | Wood and concrete combined type box girder |
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Effective date of registration: 20200401 Address after: 215633, No. 488, Changjiang East Road, Jin Gang Town, Suzhou, Jiangsu, Zhangjiagang Co-patentee after: Zhang Yunfa Patentee after: JIANGSU DEFENG CONSTRUCTION GROUP Co.,Ltd. Co-patentee after: Jiang Feifei Co-patentee after: Ma Jian Co-patentee after: Jiangsu Defeng Construction Group Construction Technology Co., Ltd Address before: 215633, No. 488, Changjiang East Road, Jin Gang Town, Suzhou, Jiangsu, Zhangjiagang Co-patentee before: Zhang Yunfa Patentee before: JIANGSU DEFENG CONSTRUCTION GROUP Co.,Ltd. Co-patentee before: Jiang Feifei Co-patentee before: Ma Jian |
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Granted publication date: 20170104 Termination date: 20210623 |