CN103437272A - Bamboo bridge - Google Patents
Bamboo bridge Download PDFInfo
- Publication number
- CN103437272A CN103437272A CN2013104377765A CN201310437776A CN103437272A CN 103437272 A CN103437272 A CN 103437272A CN 2013104377765 A CN2013104377765 A CN 2013104377765A CN 201310437776 A CN201310437776 A CN 201310437776A CN 103437272 A CN103437272 A CN 103437272A
- Authority
- CN
- China
- Prior art keywords
- bamboo
- bridge
- group
- brightness
- lighting apparatus
- 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.)
- Granted
Links
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 159
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 159
- 241001330002 Bambuseae Species 0.000 title claims abstract description 159
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 159
- 239000011425 bamboo Substances 0.000 title claims abstract description 159
- 238000005286 illumination Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 239000002023 wood Substances 0.000 claims description 34
- 229920005749 polyurethane resin Polymers 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 210000003205 muscle Anatomy 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 10
- 229920001568 phenolic resin Polymers 0.000 claims description 10
- 239000005011 phenolic resin Substances 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 9
- KVBYPTUGEKVEIJ-UHFFFAOYSA-N benzene-1,3-diol;formaldehyde Chemical compound O=C.OC1=CC=CC(O)=C1 KVBYPTUGEKVEIJ-UHFFFAOYSA-N 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 210000003746 feather Anatomy 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 210000002435 tendon Anatomy 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 18
- 238000010276 construction Methods 0.000 description 10
- 230000007613 environmental effect Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
- 239000004566 building material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 229920002748 Basalt fiber Chemical group 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 230000002742 anti-folding effect Effects 0.000 description 2
- 229920006231 aramid fiber Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003365 glass fiber Chemical group 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001046 anti-mould Effects 0.000 description 1
- 239000002546 antimould Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000001145 finger joint Anatomy 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Abstract
The invention provides a bamboo bridge. The bamboo bridge comprises bamboo longitudinal beams (1), bamboo horizontal beams (2), a bamboo panel (3), horizontal prestressing tendons (4) and longitudinal prestressing tendons (16) together, and the bridge also comprises illumination equipment and light intensity sensors; a plurality of light intensity sensors are available, and are respectively arranged at different parts of the bridge, namely the front part, the middle part and the rear part; the average value of data measured by the plurality of light intensity sensors serves as the numerical value for controlling the illumination equipment to start. The bridge can start the illumination equipment according to a plurality of measurement numerical values, can guarantee the accuracy of data, and can save energy sources well.
Description
?
Technical field
The invention belongs to the bridge construction technical field, relate in particular to a kind of bamboo bridge with lighting device.
Background technology
Under the overall background of current development low-carbon economy, the new builing structure material of green, ecology, environmental protection, low-carbon (LC) is the inevitable direction of civil engineering development in science and technology.The advantage of bamboo wood maximum is that environmental protection and raw material are renewable, and the phase of becoming a useful person of bamboo wood is generally 2～4 years (timber takes 20 years).According to incompletely statistics, national bamboo grove area is 3,540,000 hectares (not comprising Taiwan Province) approximately, accounts for 3% of the forest gross area, and approximately 8,000 ten thousand tons of accumulations are produced bamboo wood per year approximately more than 8,000,000 tons.Bamboo kind and the bamboo grove area of China account for 1/4 of the world, and bamboo wood output accounts for first of 1/3, Jun Ju various countries.
Bamboo product now is mainly used in the fields such as carriage bottom plate, container bottom board, furniture, interior decoration, construction formwork and bamboo floor, bamboo wood as the main material of structure in the research of field of civil engineering with application at present in the elementary step, developed as bamboo structure house, bamboo wood pedestrian overcrossing and little across the footpath road bridge etc.
Current medium and small common bridge, its superstructure mainly contains two kinds of forms, and a kind of is the reinforced concrete structure form, and another kind is steel work or steel-concrete combined structure, no matter adopt which kind of form of structure, every kind of form of structure all has some limitations in application:
(1) for reinforced concrete structure, it is from great, and the construction and maintenance cycle is long.
(2) for steel work or steel-concrete combined structure, its main supporting part is girder steel, and the steel cost is higher, and corrosion resistance is poor, and corrosiveness can affect the normal use of bridge, makes maintenance cost higher.
(3) not environmental protection of material therefor, traditional axle building materials used are all steel, cement, the production of concrete material or steel itself exists high energy consumption and high pollution, or even timber, reinforced concrete can't be recycled, also can't be cleared up voluntarily by nature, the wood grows cycle is long, and the deforestation bridging is runed counter to environmental protection undoubtedly.Along with the sustainable development idea is rooted in the hearts of the people, " green building material " that adopt environmental protection, low energy consumption and can meet instructions for use enjoys popular confidence beyond doubt.
New materials green, energy-saving and environmental protection are the developing direction in civil construction project field.The bamboo offset plate is to make main framework and packing material with the mao bamboon material, because bamboo offset plate hardness is high, and anti-folding, resistance to compression, substituted steel plate in a lot of zones of using.Again because bamboo is easy cultivation, the fast forest that grows into forest, just can cut and draw in three to five years, can replace timber, and therefore, the policy support of national forestry section is greatly developed and be take the wood-based plate that bamboo is main rapidoprint, the use of in a lot of places, having replaced wood type sheet material.
Compare other constructional materials, bamboo wood advantage aspect antidetonation, environmental protection, comfortable, industrialization is remarkable, and the structure that current bamboo wood is made has started to appear at the bridge construction field, as Chinese patent " 200610031948.9 " number, disclose a kind of bamboo bridge, full-bridge is comprised of the bamboo wood member, simple in structure, easy construction, the construction material environmental protection, but for such all bamboo structure bridge, the bamboo wood consumption is large, rigidity of section is low, full-bridge globality deficiency.
Summary of the invention
The purpose of this invention is to provide a kind of assembling bamboo bridge, this kind bridge construction intensity is large, ductility good, the material therefor environmental protection, structural element standardization, assemblingization degree are high, structural integrity is good, can give full play to the advantage of material, meets the demand of the normal use of bridge construction and durability.
Technical scheme of the present invention is: a kind of assembling bamboo bridge comprises that bamboo longeron, bamboo crossbeam, bamboo panel, transverse prestress bundle and longitudinal prestressing strands form jointly:
Bamboo longeron end face is provided with the longeron projection along bridge longitudinal separation, bamboo crossbeam end face is interval with the crossbeam projection along bridge lateral, bamboo panel comprises presstressed reinforcing steel and the superimposed a plurality of bridge floor plates of level, the direction of its superimposed arrangement is perpendicular to direct of travel, described presstressed reinforcing steel is the FRP muscle, it is through a plurality of described bridge floor plates, and the two ends of presstressed reinforcing steel are through backing plate and use the ground tackle fixed strain, fetter a plurality of bridge floor plates;
The bridge deck veneer that described bridge floor plate is made by a plurality of bamboo offset plates head and the tail joggle successively forms, the feather joint place of two adjacent bridge deck sheets is staggered, one end of the bridge deck veneer on described bridge floor plate is provided with groove width along advancing the tongue-and-groove that the groove direction increases gradually, adjacent bridge deck veneer one end is provided with the tenon be complementary with described tongue-and-groove with it, and described tenon embeds in tongue-and-groove;
The below of bamboo panel is provided with respectively the bridge deck groove be complementary with longeron projection and crossbeam projection, and the corner angle of bamboo panel rear and front end tighten the corner protector steel limit that spiral-lock has integral reinforcing;
The bamboo crossbeam is connected by metal connecting piece with the bamboo longeron, in the bridge deck groove, is provided with metalwork;
The transverse prestress bundle is the FRP muscle, and it passes in bamboo crossbeam inside, and its two ends stretch-draw prestressing force also is anchored in the lateral surface of bridge lateral outermost bamboo longeron;
Be equipped with 4-6 root longitudinal prestressing strands in the bamboo longeron, this longitudinal prestressing strands is the FRP muscle, and its two ends stretch-draw prestressing force also is anchored in the lateral surface of the vertical outermost bamboo of bridge crossbeam;
The bottom of bamboo longeron, bamboo crossbeam, bamboo panel is provided with FRP cloth;
During this assembling bamboo bridge whole bamboo woods used all were immersed in the impregnation pond that fills polyurethane resin and phenolic resins before assembling, the volume ratio of polyurethane resin and phenolic resins is 2-2.5:1, and boils 10-15 minute under 100-110 ℃; Afterwards bamboo wood picked up and dry, then on the external surface of whole bamboo woods, evenly applying successively one deck waterborne polyurethane resin, one deck polyurethane resin, one deck waterborne polyurethane resin and one deck resorcinol formaldehyde resin.
Preferably, described metalwork is that metal ribs or metal tube are made, and described projection and groove are that inverted trapezoidal or groove are that groove width increases gradually along advancing the groove direction, and described projection has the respective shapes coordinated with it.
In above-mentioned arbitrary scheme, preferably, several specific admixtures a kind of or wherein that the fiber reinforced material of described FRP muscle or FRP cloth can be in carbon fiber, glass fiber, basalt fibre, aramid fiber form.
In above-mentioned arbitrary scheme, preferably, metal connecting piece is comprised of U-shaped support and fixed head, and the sidewall of U-shaped support and fixed head offer the bolt cavity.
In above-mentioned arbitrary scheme, preferably, the bed thickness of the waterborne polyurethane resin of coating, polyurethane resin, waterborne polyurethane resin and resorcinol formaldehyde resin is respectively 0.5mm, 0.8mm, 0.5mm and 0.5mm.
In above-mentioned arbitrary scheme, preferably, described corner protector steel limit is angle steel, and quantity is 2, and described angle steel is equal leg angle, and its length is not more than the width of bamboo panel, the hem width<D of D/2<described equal leg angle, the thickness that wherein D is described bamboo panel.
In above-mentioned arbitrary scheme, preferably, the place of interconnecting of bamboo longeron, bamboo crossbeam and bamboo panel can further adopt structure glue to strengthen being connected.
In above-mentioned arbitrary scheme, preferably, described bamboo bridge further comprises a plurality of lighting apparatus, brightness sensor and central controller, and described a plurality of lighting apparatus, brightness sensor are connected with the central controller communication; Described a plurality of lighting apparatus is divided into four groups, and the brightness number that a plurality of lighting apparatus detect according to the brightness sensor starts, and the concrete order started is as follows: when brightness number reaches the first brightness, and first group of illuminating device starting illumination; When brightness number reaches secretly the second brightness in the first brightness, second group of illuminating device starting illumination, now first group and second group of lighting apparatus throw light on simultaneously; When brightness number reaches secretly the 3rd brightness in the second brightness, the 3rd group of illuminating device starting illumination, now first group, second group and the 3rd group of lighting apparatus throw light on simultaneously; When brightness number reaches secretly the 4th brightness in the 3rd brightness, the 4th group of illuminating device starting illumination, now first group, second group, the 3rd group and the 4th group of lighting apparatus throw light on simultaneously.
Described brightness sensor can arrange a plurality of, is separately positioned on the diverse location of bridge, and the average of the data by a plurality of brightness sensor measurements is used as controlling the numerical value of illuminating device starting.
Advantage of the present invention is remarkable, has following beneficial effect:
(1) bamboo panel tensile strength of the present invention is very high, compares concrete slab, and under normal operating condition, there is not the possibility of cracking in deck structrue.
(2) the formation veneer of bamboo panel is for laterally edge-on, and the spreading mode changes longitudinal spliced for horizontally-spliced, in bridge floor wide region inseam quantity, can obviously reduce; Horizontally-spliced employing tapered end joint head replaces traditional finger form, and (finger-jointed plate refers to that the polylith wood board splicing forms, no longer glue and press clamping plate up and down, adopt the zigzag interface between vertical plank, similar two hand fingers intersection docking), different from the main tension of finger joint, the joggle joint can tension, also can bending resistance, shearing resistance, thus farthest reduce the weakening of seam to bridge floor plate supporting capacity.
(3) by the horizontal and vertical prestressing tendon of stretch-draw, can improve the horizontal and vertical rigidity of bridge construction, strengthened the resistance to overturning between bamboo longeron and bamboo crossbeam simultaneously.
(4) projection and groove being set makes between the bamboo wood member and forms mechanical snap, primary be rigidly connected provided, the metalwork simultaneously arranged in groove provides auxiliary the flexibly connecting of bonding surface, and the connection of coupling hardness with softness has guaranteed rigidity and the ductility that structure is enough.
(5) half assembled bamboos-the Combined concrete bridge is from heavy and light, and member is easy to standardization, and most of member can be prefabricated in advance in factory, and speed of application is fast, the cycle is short.
(6) one of the bamboo wood fast-growing important as China, renewable forest reserves, have a growth fast, becomes a useful person early, and output is high, the characteristics that once afforestation can sustainable utilization, and energy consumption is low, pollution-free in process of production, is a kind of desirable Green environmental-protection building material; Mechanical property is in no way inferior in timber, and its speed of growth is also faster than timber, with concrete, with steel, compares, and in process, energy consumption is low, and discarded object is few, is undisputed " green building material ".
(7) anti-mould and anti-moth of bamboo wood own, good looking appearance, have good durability and corrosion resistance, and this makes the bridge inspection and maintenance expense lower.
(8) take full advantage of the tensile strength that FRP is higher, and improve largely the failure mode of the discrete and fragility of former bamboo member mechanical property, reduce the reduction of its local defect to mechanical property; Bamboo wood is as the main body of compound beam, it has the higher ratio of strength to weight, elasticity and toughness and processing characteristics preferably, and obtain the further enhancing of FRP in tensile region, this structure takes full advantage of the characteristics of material, the advantage such as has from heavy and light, bearing capacity is large, rigidity is large, anti-twisting property is strong, ductility is good, automatic recovery ability is strong.
(9) utilize durability and the pliability of polyurethane resin, phenolic resins, soaking in the proper ratio bamboo wood and boiling to increase bamboo wood toughness insect protected, experimental results show that this proper proportion has significantly improved the toughness of bamboo wood; Applying waterborne polyurethane resin, polyurethane resin, waterborne polyurethane resin and resorcinol formaldehyde resin afterwards on the external surface of whole bamboo woods is the performance of utilizing its good wear-resisting weather-proof, in the present invention, the thickness of each layer has guaranteed that its wear-resisting weather-proof performance reaches best, makes the use safety of its application life of in use having improved bamboo wood and bridge.
The coefficient of thermal expansion of (10) four layers of coating is outwards diminished successively by the external surface of bamboo wood, can guarantee compactness and the stability of each layer of connection, prevents that skin from coming off.
(11) by the startup of self-control lighting equipment, can energy conservation.
(12) by the different setting of power of each group lighting apparatus, can energy conservation.
(13) brightness of measuring light by a plurality of brightness sensors are set, can guarantee the accuracy of the data measured.
The accompanying drawing explanation
The following drawings only is intended to the present invention is done and schematically illustrates and explain, not delimit the scope of the invention.
Fig. 1 is a kind of overall structure schematic diagram of assembling bamboo bridge;
Fig. 2 is the bamboo panel structural representation of assembling bamboo bridge;
Fig. 3 is the bridge deck veneer elevation of assembling bamboo bridge bamboo panel;
Fig. 4 is vertical (horizontal stroke) beam of the bamboo of assembling bamboo bridge and the organigram that is connected of bamboo panel;
Fig. 5 is vertical (horizontal stroke) girder construction schematic diagram of the bamboo of assembling bamboo bridge.
Fig. 6 is the flow chart that lighting apparatus is controlled.
In the accompanying drawings, bamboo longeron-1, bamboo crossbeam-2, bamboo panel-3, transverse prestress bundle-4, longeron projection-5, crossbeam projection-6, presstressed reinforcing steel-7, bridge floor plate-8, backing plate-9, ground tackle-10, bridge deck veneer-11, bridge deck groove-12, corner protector steel limit-13, metal connecting piece-14, metalwork-15, longitudinal prestressing strands-16, tongue-and-groove-17, tenon-18.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing explanation the specific embodiment of the present invention.
As shown in Fig. 1～Fig. 5, a kind of assembling bamboo bridge, comprise that bamboo longeron 1, bamboo crossbeam 2, bamboo panel 3, transverse prestress bundle 4 and longitudinal prestressing strands 16 form jointly.
Bamboo longeron 1 end face is provided with longeron projection 5 along bridge longitudinal separation, bamboo crossbeam 2 end faces are interval with crossbeam projection 6 along bridge lateral, bamboo panel 3 comprises presstressed reinforcing steel 7 and the superimposed a plurality of bridge floor plates 8 of level, the direction of its superimposed arrangement is perpendicular to direct of travel, described presstressed reinforcing steel 7 is the FRP muscle, it is through a plurality of described bridge floor plates 8, and the two ends of presstressed reinforcing steel 7, through backing plate 9 and with ground tackle 10 fixed strains, fetter a plurality of bridge floor plates 8.
The bridge deck veneer 11 that described bridge floor plate 8 is made by a plurality of bamboo offset plates head and the tail joggle successively forms, the feather joint place of two adjacent bridge deck sheets 8 is staggered, one end of the bridge deck veneer 11 on described bridge floor plate 8 is provided with groove width along advancing the tongue-and-groove 17 that the groove direction increases gradually, adjacent bridge deck veneer 11 1 ends are provided with the tenon 18 be complementary with described tongue-and-groove 17 with it, and described tenon 18 embeds in tongue-and-groove 17.
The below of bamboo panel 3 is provided with respectively the bridge deck groove 12 be complementary with longeron projection 5 and crossbeam projection 6, and described projection and groove are that inverted trapezoidal or groove are that groove width increases gradually along advancing the groove direction, and described projection has the respective shapes coordinated with it; The corner angle of bamboo panel 3 rear and front ends tighten the corner protector steel limit 13 that spiral-lock has integral reinforcing.
Bamboo crossbeam 2 is connected by metal connecting piece 14 with bamboo longeron 1, and metal connecting piece 14 is comprised of U-shaped support and fixed head, and the sidewall of U-shaped support and fixed head offer the bolt cavity.Be provided with metalwork 15 in bridge deck groove 12, it is made for metal ribs or metal tube.
Transverse prestress bundle 4 is the FRP muscle, and it passes in bamboo crossbeam 2 inside, and its two ends stretch-draw prestressing force also is anchored in the lateral surface of bridge lateral outermost bamboo longeron 1.
Be equipped with 4-6 root longitudinal prestressing strands 16 in bamboo longeron 1, this longitudinal prestressing strands 16 is the FRP muscle, and its two ends stretch-draw prestressing force also is anchored in the lateral surface of the vertical outermost bamboo of bridge crossbeam (2).
The bottom of bamboo longeron 1, bamboo crossbeam 2, bamboo panel 3 is provided with FRP cloth;
Several specific admixtures a kind of or wherein that the fiber reinforced material of described FRP muscle or FRP cloth can be in carbon fiber, glass fiber, basalt fibre, aramid fiber form.
During this assembling bamboo bridge whole bamboo woods used all were immersed in the impregnation pond that fills polyurethane resin and phenolic resins before assembling, the volume ratio of polyurethane resin and phenolic resins is 2-2.5:1, and boils 10-15 minute under 100-110 ℃; Afterwards bamboo wood picked up and dry, then on the external surface of whole bamboo woods, evenly applying successively the waterborne polyurethane resin that one deck 0.5mm is thick, thick waterborne polyurethane resin and the thick resorcinol formaldehyde resin of one deck 0.5mm of polyurethane resin, one deck 0.8mm that one deck 0.8mm is thick.
The coefficient of thermal expansion of four layers of coating is outwards diminished successively by the external surface of bamboo wood, can guarantee compactness and the stability of each layer of connection, prevents that skin from coming off.Because in the process of being heated, outermost layer first is heated, temperature increase is maximum, first expand, then be the inside second layer, the 3rd layer, the 4th layer expanded by heating successively, therefore temperature increase reduces gradually, and four layers of expansion number of times reduce successively and can guarantee that expansion rate is consistent substantially, guarantee compactness and the stability of each layer of connection.In like manner, when catch a cold winter, also can guarantee compactness and the stability of each layer of connection.
Be not limited to the material of foregoing description for the material of coating, those skilled in the art can reasonably select, but for the selection of the material of four-layer structure, and requirement is that the coefficient of thermal expansion of the four-layer structure outside by the external surface of bamboo wood reduces gradually.
Certainly, the number of plies is not limited to four layers, can comprise 5 layers or more, also can comprise three layers, and for example the thickness of three layers is waterborne polyurethane resin, polyurethane resin and resorcinol formaldehyde resin.Size also is not limited to above-mentioned size, and above-mentioned size is also best embodiment.
Described corner protector steel limit 13 is angle steel, and quantity is 2, and described angle steel is equal leg angle, and its length is not more than the width of bamboo panel 3, the hem width<D of D/2<described equal leg angle, the thickness that wherein D is described bamboo panel 3.
The place of interconnecting of bamboo longeron 1, bamboo crossbeam 2 and bamboo panel 3 can further adopt structure glue to strengthen being connected.
The bamboo wood that soaks and boil with polyurethane resin and the phenolic resins of proper proportion in the present invention is pulled off to experiment, and experimental result shows that this measure has significantly improved the toughness of bamboo wood, referring to table 1.
Table 1
| Material processed | Toughness (anti-folding and durability) (meaning with T) |
| Undressed original bamboo wood | T |
| The bamboo wood only soaked with polyurethane resin | （1+30%）T |
| The bamboo wood only soaked with phenolic resins | （1+35%）T |
| The polyurethane resin that bamboo wood is 2-2.5:1 by volume ratio and phenolic resins soak, and boil 15-20 minute under 100-110 ℃ | （1+60%~70%）T |
Described bamboo bridge further comprises a plurality of lighting apparatus, brightness sensor and central controller (not illustrating in accompanying drawing), and described a plurality of lighting apparatus, brightness sensor are connected with the central controller communication; Described a plurality of lighting apparatus is divided into four groups, and the ambient brightness numerical value that a plurality of lighting apparatus detect according to the brightness sensor starts, and the concrete order started is as follows:
When brightness number reaches the first brightness, first group of illuminating device starting illumination; When brightness number reaches secretly the second brightness in the first brightness, second group of illuminating device starting illumination, now first group and second group of lighting apparatus throw light on simultaneously; When brightness number reaches secretly the 3rd brightness in the second brightness, the 3rd group of illuminating device starting illumination, now first group, second group and the 3rd group of lighting apparatus throw light on simultaneously; When brightness number reaches secretly the 4th brightness in the 3rd brightness, the 4th group of illuminating device starting illumination, now first group, second group, the 3rd group and the 4th group of lighting apparatus throw light on simultaneously.
By the startup in proper order of lighting apparatus, can guarantee to start according to different brightness the lighting apparatus of varying number, can energy conservation, reduce unnecessary power wastage.
What further optimize is, the lighting apparatus model is identical, wherein the quantity of first group of lighting apparatus is less than the quantity of second group of lighting apparatus, and the quantity of second group of lighting apparatus is less than the quantity of the 3rd group of lighting apparatus, and the quantity of the 3rd group of lighting apparatus is less than the quantity of the 4th group of lighting apparatus.
What further optimize is, the general power number of first group of lighting apparatus is less than the general power number of second group of lighting apparatus, the general power number of second group of lighting apparatus is less than the general power number of the 3rd group of lighting apparatus, and the general power number of the 3rd group of lighting apparatus is less than the general power number of the 4th group of lighting apparatus.
Described brightness sensor can arrange a plurality of, and the average of the data by a plurality of brightness sensor measurements is used as controlling the numerical value of illuminating device starting, when average during lower than certain brightness number, and illuminating device starting illumination.By a plurality of brightness sensors are set, can guarantee the accuracy of survey data.
By the setting of above-mentioned power, can start less lighting apparatus so that in the situation that light is stronger, then dimmed along with light, accelerate gradually, and the quantity increased also constantly increases, and guarantees the saving of electric power.
When ambient brightness brightens gradually, for example, when it is soon bright, now the central controller controls lighting apparatus progressively cuts out according to above-mentioned contrary order.When brightness is between the 4th brightness and the 3rd brightness, now the 4th group of lighting apparatus cuts out, and its excess-three group continues to start illumination; When brightness is between the 3rd brightness and the second brightness, now the 3rd group of lighting apparatus cuts out, and only has first, second group lighting apparatus to continue to start illumination; When brightness is between the second brightness and the first brightness, now second group of lighting apparatus cuts out, and only has first group of lighting apparatus to continue to start illumination; When brightness surpasses the first brightness, first group of lighting apparatus cuts out, and now all lighting apparatus all cut out.
The power source of lighting apparatus can derive from solar energy.Solar cell is placed on to the surface of bamboo bridge, the groove of placing solar cell can be set on the bamboo bridge surface, transparent anti-abrasion cover is set on solar cell, the guarantor steps on like this, can not damage battery simultaneously.The electrical power storage that solar cell utilizes solar energy to transform is in a large battery, and battery is powered to lighting apparatus according to brightness number.
Be arranged on the surface of bamboo bridge by solar cell, can reduce the laying of circuit, save space, guarantee the attractive in appearance of bamboo bridge surrounding enviroment simultaneously.
Certainly, solar cell also can be arranged on a certain distance from the bamboo bridge position, for example building top nearby.
Except solar cell for supplying power, this bamboo bridge can arrange AC-powered simultaneously, with the deficiency of quasi-complement solar electric power.
Bamboo bridge is provided with the electric quantity detection apparatus of solar storage battery, to detect the current electric quantity of battery, and, when the current electric quantity deficiency of battery, starts alternating current and is powered.
The mode of determining the electric weight deficiency has following two kinds, but is not limited to following two kinds.
1) mode detected can be determined the time of power supply according to the power number of lighting apparatus by dump energy, when the time arrives, just automatically start AC-powered.
Certainly, for guarantee the time accurately, need lighting apparatus to start at every turn or carry out an electric weight when closing and detect, for example in the time of first group of device start, need to carry out one-time detection, carry out one-time detection when second group of device start or when closing.Because start at every turn or close after the power number of lighting apparatus can change, therefore need lighting apparatus to start at every turn or carry out an electric weight when closing and detect.
2) determine whether to need to start AC-powered according to the ambient brightness of measuring.For example, after four groups of lighting apparatus all start, brightness still, lower than the 4th brightness, now can be inferred electricity shortage, so control system is controlled the startup of alternating current at once.
The control of lighting apparatus can be carried out Long-distance Control, same, and the measurement of ambient brightness can be measured in a distance of range blanking equipment, avoids the illumination of lighting apparatus to affect measurement result.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (4)
1. a bamboo bridge, comprise the common composition of bamboo longeron (1), bamboo crossbeam (2), bamboo panel (3), transverse prestress bundle (4) and longitudinal prestressing strands (16), it is characterized in that:
Bamboo longeron (1) end face is provided with longeron projection (5) along bridge longitudinal separation, bamboo crossbeam (2) end face is interval with crossbeam projection (6) along bridge lateral, bamboo panel (3) comprises presstressed reinforcing steel (7) and the superimposed a plurality of bridge floor plates (8) of level, the direction of its superimposed arrangement is perpendicular to direct of travel, described presstressed reinforcing steel (7) is the FRP muscle, it is through a plurality of described bridge floor plates (8), the two ends of presstressed reinforcing steel (7), through backing plate (9) and with ground tackle (10) fixed strain, fetter a plurality of bridge floor plates (8);
The bridge deck veneer (11) that described bridge floor plate (8) is made by a plurality of bamboo offset plates head and the tail joggle successively forms, the feather joint place of two adjacent bridge deck sheets (8) is staggered, one end of the bridge deck veneer (11) on described bridge floor plate (8) is provided with groove width along advancing the tongue-and-groove (17) that the groove direction increases gradually, adjacent bridge deck veneer (11) one ends are provided with the tenon (18) be complementary with described tongue-and-groove (17) with it, and described tenon (18) embeds in tongue-and-groove (17);
The below of bamboo panel (3) is provided with respectively the bridge deck groove (12) be complementary with longeron projection (5) and crossbeam protruding (6), and the corner angle of bamboo panel (3) rear and front end tighten the corner protector steel limit (13) that spiral-lock has integral reinforcing;
Bamboo crossbeam (2) is connected by metal connecting piece (14) with bamboo longeron (1), is provided with metalwork (15) in bridge deck groove (12);
Transverse prestress bundle (4) is the FRP muscle, and it passes in bamboo crossbeam (2) inside, and its two ends stretch-draw prestressing force also is anchored in the lateral surface of bridge lateral outermost bamboo longeron (1);
Be equipped with 4-6 root longitudinal prestressing strands (16) in bamboo longeron (1), this longitudinal prestressing strands (16) is the FRP muscle, and its two ends stretch-draw prestressing force also is anchored in the lateral surface of the vertical outermost bamboo of bridge crossbeam (2);
The bottom of bamboo longeron (1), bamboo crossbeam (2), bamboo panel (3) is provided with FRP cloth;
During this assembling bamboo bridge whole bamboo woods used all were immersed in the impregnation pond that fills polyurethane resin and phenolic resins before assembling, the volume ratio of polyurethane resin and phenolic resins is 2-2.5:1, and boils 10-15 minute under 100-110 ℃; Afterwards bamboo wood picked up and dry, then on the external surface of whole bamboo woods, evenly applying successively one deck waterborne polyurethane resin, one deck polyurethane resin, one deck waterborne polyurethane resin and one deck resorcinol formaldehyde resin.
2. bamboo bridge according to claim 1, is characterized in that, described bamboo bridge further comprises a plurality of lighting apparatus, brightness sensor and central controller, and described a plurality of lighting apparatus, brightness sensor are connected with the central controller communication; Described brightness sensor is a plurality of, is separately positioned on the diverse location of bridge, according to the average of the data of a plurality of brightness sensor measurements, controls illuminating device starting, when average during lower than certain brightness number, and illuminating device starting illumination.
3. bamboo bridge according to claim 2, it is characterized in that: described a plurality of lighting apparatus are divided into four groups, and the average brightness number that a plurality of lighting apparatus detect according to the brightness sensor starts, and the concrete order started is as follows:
When brightness number reaches the first brightness, first group of illuminating device starting illumination; When brightness number reaches secretly the second brightness in the first brightness, second group of illuminating device starting illumination, now first group and second group of lighting apparatus throw light on simultaneously; When brightness number reaches secretly the 3rd brightness in the second brightness, the 3rd group of illuminating device starting illumination, now first group, second group and the 3rd group of lighting apparatus throw light on simultaneously; When brightness number reaches secretly the 4th brightness in the 3rd brightness, the 4th group of illuminating device starting illumination, now first group, second group, the 3rd group and the 4th group of lighting apparatus throw light on simultaneously.
4. bamboo bridge according to claim 3, it is characterized in that the general power number of first group of lighting apparatus is less than the general power number of second group of lighting apparatus, the general power number of second group of lighting apparatus is less than the general power number of the 3rd group of lighting apparatus, and the general power number of the 3rd group of lighting apparatus is less than the general power number of the 4th group of lighting apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437776.5A CN103437272B (en) | 2013-09-24 | 2013-09-24 | Bamboo bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437776.5A CN103437272B (en) | 2013-09-24 | 2013-09-24 | Bamboo bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103437272A true CN103437272A (en) | 2013-12-11 |
| CN103437272B CN103437272B (en) | 2014-09-03 |
Family
ID=49690981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310437776.5A Expired - Fee Related CN103437272B (en) | 2013-09-24 | 2013-09-24 | Bamboo bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103437272B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610290A (en) * | 2019-01-24 | 2019-04-12 | 河海大学 | A kind of landscape trestle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB594942A (en) * | 1941-07-14 | 1947-11-24 | Derek William Ross Walker | Improvements in and relating to raft-like structures for use on water and to bridge-constructions employing the same |
| CN103437271A (en) * | 2013-09-11 | 2013-12-11 | 赵炜 | Assembly type bamboo bridge |
| CN103452035A (en) * | 2013-09-11 | 2013-12-18 | 赵炜 | Assembly type bamboo bridge with variable expansion coefficients |
-
2013
- 2013-09-24 CN CN201310437776.5A patent/CN103437272B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB594942A (en) * | 1941-07-14 | 1947-11-24 | Derek William Ross Walker | Improvements in and relating to raft-like structures for use on water and to bridge-constructions employing the same |
| CN103437271A (en) * | 2013-09-11 | 2013-12-11 | 赵炜 | Assembly type bamboo bridge |
| CN103452035A (en) * | 2013-09-11 | 2013-12-18 | 赵炜 | Assembly type bamboo bridge with variable expansion coefficients |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610290A (en) * | 2019-01-24 | 2019-04-12 | 河海大学 | A kind of landscape trestle |
| CN109610290B (en) * | 2019-01-24 | 2021-03-19 | 河海大学 | Landscape trestle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103437272B (en) | 2014-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102561180B (en) | Bamboo bridge deck | |
| CN103498412B (en) | Novel energy-saving bamboo bridge | |
| CN103614965A (en) | Bamboo wood and concrete combined bridge deck slab | |
| CN103452035B (en) | Assembly type bamboo bridge with variable expansion coefficients | |
| CN105507497A (en) | Bamboo-wound pipe and cast concrete integrated column for buildings and preparation method of bamboo-wound pipe and cast concrete integrated column for buildings | |
| CN205134743U (en) | Compound cylinder of bamboo for building winding pipe concrete watering | |
| CN108360742A (en) | A kind of prestressing with bond bamboo H-beam | |
| CN104002340B (en) | The preparation method of the long material of a kind of structure thin bamboo strips used for weaving curtain lamination | |
| CN103437271B (en) | Assembly type bamboo bridge | |
| CN103437272B (en) | Bamboo bridge | |
| CN202559249U (en) | Bamboo bridge deck slab | |
| CN207032860U (en) | Reinforced concrete support structure | |
| CN209580731U (en) | A kind of novel C LT plate of zigzag interlayer gluing mode | |
| CN208650393U (en) | A kind of steel plate enhancing compound CLT plate of bamboo and wood | |
| CN205116539U (en) | Structure heated board | |
| CN101725211A (en) | Fiber-reinforced bamboo-based engineering member | |
| CN105604235B (en) | A kind of building lamination wood and its method of construction | |
| CN202324326U (en) | Bamboo building material and bamboo building load-bearing construction member | |
| CN211113115U (en) | Steel-bamboo combined truss bridge | |
| CN204935822U (en) | A kind of bamboo-wood plyboard | |
| CN209066724U (en) | A kind of prestressing with bond bamboo H-beam | |
| CN202702387U (en) | Bamboo pallet for brick machines | |
| CN205343339U (en) | Axis stalk plywood | |
| CN203640165U (en) | Natural arch tile-shaped bamboo chip laminated arched beam | |
| CN207079808U (en) | A kind of bamboo wood steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yanchen Inventor after: Zhao Wei Inventor after: Wang Wenhu Inventor after: Guan Shixi Inventor after: Li Caixia Inventor after: Fan Guoyong Inventor after: Zhang Chunyuan Inventor after: Guo Lafeng Inventor after: Cao Guangqun Inventor after: Zhu Hailin Inventor before: Liu Yanchen Inventor before: Zhao Wei Inventor before: Wang Wenhu Inventor before: Guan Shixi Inventor before: Li Caixia Inventor before: Fan Guoyong Inventor before: Zhang Chunyuan Inventor before: Guo Lafeng Inventor before: Cao Guangqun Inventor before: Zhu Hailin |
|
| CB03 | Change of inventor or designer information | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yanchen Inventor after: Tang Jiapeng Inventor after: Lu Liquan Inventor after: Hu Manhong Inventor after: Zhang Shuxia Inventor after: Kuang Liqun Inventor after: Han Yueping Inventor after: Wang Ying Inventor after: Zhi Jinning Inventor after: Li Yufeng Inventor after: Yu Yi Inventor after: Wang Wenhu Inventor after: Li Kun Inventor after: Zhao Wei Inventor after: Zhang Yangang Inventor after: Li Caixia Inventor after: Li Zhanfen Inventor after: Guan Shixi Inventor after: Fan Guoyong Inventor after: Guo Lafeng Inventor after: Zhang Chunyuan Inventor before: Liu Yanchen Inventor before: Zhao Wei Inventor before: Wang Wenhu Inventor before: Guan Shixi Inventor before: Li Caixia Inventor before: Fan Guoyong Inventor before: Zhang Chunyuan Inventor before: Guo Lafeng Inventor before: Cao Guangqun Inventor before: Zhu Hailin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU YANCHEN WANG WENHU GUAN SHIXI LI CAIXIA FAN GUOYONG ZHANG CHUNYUAN GUO LAFENG CAO GUANGQUN ZHU HAILIN ZHAO WEI TO: LIU YANCHEN WANG WENHU ZHANG YANGANG LI CAIXIA LI ZHANFEN GUAN SHIXI FAN GUOYONG GUO LAFENG ZHANG CHUNYUAN TANG JIAPENG LU LIQUAN HU MANHONG ZHANG SHUXIA KUANG LIQUN HAN YUEPING WANG YING ZHI JINNING LI YUFENG YU YI LI KUN ZHAO WEI |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150924 |
|
| EXPY | Termination of patent right or utility model |