CN202559249U - Bamboo bridge deck slab - Google Patents
Bamboo bridge deck slab Download PDFInfo
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- CN202559249U CN202559249U CN2011205538258U CN201120553825U CN202559249U CN 202559249 U CN202559249 U CN 202559249U CN 2011205538258 U CN2011205538258 U CN 2011205538258U CN 201120553825 U CN201120553825 U CN 201120553825U CN 202559249 U CN202559249 U CN 202559249U
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- bridge deck
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- slab
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Abstract
The utility model discloses a bamboo bridge deck slab which comprises prestressed tendons and a plurality of stacked bridge desk slab sheets. The prestressed tendons penetrate through the bridge deck slab sheets. Two ends of each prestressed tendon penetrate through base plates and are fixed and tightened by anchoring devices so as to bind the bridge deck slab sheets. Each bridge deck slab sheet is formed by connecting a plurality of single bridge deck sheets, made of bamboo plywood, sequentially end to end by joggling, and joggle parts of two adjacent bridge deck sheets are staggered. The bridge deck in the required width is formed by sequentially joggling the single bridge deck sheets end to end according to the cross section width of the bridge in the transverse direction of the bridge. The single base sheets of the novel bamboo bridge deck slab are convenient to prefabricate in factories and are assembled on the spot to form a bridge deck, construction process is simple and quick, and construction materials are environment-friendly and are easy to recycle. The bamboo bridge deck slab is suitable for combined bridges and is a bridge deck slab meeting using function and durability.
Description
Technical field
The utility model belongs to the bridge construction technical field, relates to a kind of bridge deck that are applicable to common road bridge and urban interchange.
Background technology
Along with the progress of expanding economy with society, bridge deck are as directly bearing vehicular load in the bridge superstructure and with the vitals of Load Transfer to girder, also being endowed new requirement and mission naturally.At present, traditional bridge deck mainly comprise reinforced concrete bridge deck plate and steel bridge deck.In recent years, some novel bridge deck have abroad also appearred, and like the compound bridge deck of FRP-steel concrete, the aluminum bridge deck also are one of widely used bridge deck forms at U.S.'s wooden bridge panel.These bridge deck have all obtained certain application because of its special advantages.
Traditional bridge deck major advantage is following:
Cost is low, easy construction, good integrity.This mainly refers to the reinforced concrete bridge deck plate, because be cast-in-site, is convenient to construction control, and this also is a kind of bridge deck pattern that present middle-size and small-size bridge extensively adopts.
From heavy and light, ultimate bearing capacity is big, and building height is low.This mainly refers to steel bridge deck; The compound bridge deck of FRP-steel concrete compound bridge deck, especially FRP-steel concrete have made full use of the resistance to tension of concrete anti-pressure ability and FRP material; Alleviate the deadweight of bridge deck greatly, improved supporting capacity.And steel bridge deck is the only selection of long-span bridge beam bridge panel at present.
Short construction period.Except the reinforced concrete bridge deck plate, above-mentioned other bridge deck can be prefabricated in advance in factory, and install at the scene, needs the last directly fluid concrete of other fluid concrete.
In the relevant abroad correlative study of laminated board wooden bridge, the scholar of the U.S. has introduced the assembly technology of this kind plank beam bridge in detail.This plank beam bridge is by transversely arranged the forming along bridge vertical edge-on glued wood edge; Every plank splices spreading in vertical available finger mode; While is (vertically) all necessary at a certain distance tensioned prestressing bar (laterally) in the longitudinal direction; Pressing together, form a whole plank frame along transversely arranged independent template.The anchored end of wherein used transverse prestress muscle longitudinally at interval 3 feet (91.44cm) arrange, anchor hole diameter 41mm, channel-section steel and steel plate washer are posted to reduce the later stage loss of prestress in the outside.This plank frame uses as girder, and the two end supports of plate-girder is on the bridge pier.Plate-girder length is controlled according to actual timber length, if the needs that strengthen for span, timber plate girder can carry out vertical spreading, but must guarantee that adjacent seam is not or not a place.
No matter be to adopt above-mentioned which kind of bridge deck, all can have following one or more deficiencies:
1, complex manufacturing technology.Steel bridge deck need be with cover plate, and stiffening rib welds or the bolt connection one by one in length and breadth, has increased operation; The compound bridge deck of FRP-steel concrete need be considered being connected of concrete and FRP structure, and major measure comprises that bolt connects and the perforated panel connector.
2, the cost of metal bridge floor is higher.This mainly refers to steel bridge deck and aluminium bridge panel, and the FRP material price is also higher in addition, but the compound bridge deck of FRP-steel concrete have then reduced cost relatively.
3, not environmental protection of material therefor.No matter be traditional axle panel or above-mentioned novel bridge deck, its used building materials all are steel, cement, or even timber, and reinforced concrete can't be recycled, and also can't be cleared up voluntarily by nature, and 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 satisfy instructions for use enjoys popular confidence beyond doubt.
4. bridge deck destruction easy to crack.For the reinforced concrete bridge deck plate, crack on concrete is a problem that has a strong impact on structure durability, also has same problem for the steel bridge face in addition.
5, according to the U.S. series of studies achievement of lamination sheet material bridge is shown; Because the length restriction of available timber finished product and the restriction of the intensity of timber own; The longitudinal load-bearing ability and the insufficient rigidity thereof of timber plate girder are a great problems; Even tradition laminated board wooden bridge single span after finger is striden the footpath and also can't be surpassed 9.2m, therefore, the not enough problem of vertical span ability that connects and cause thus is the subject matter that the laminated board wooden bridge is faced.Because the length of transverse prestressed reinforcing steel bar is shorter, and loss of prestress is bigger, the final effective prestress that forms is on the low side, with integral rigidity that influences plank frame and supporting capacity thereof in addition.
The bamboo offset plate is to make main framework and packing material with the mao bamboon material, and through the high building materials that are pressed into base, predominant use is the grouting of building shut die, railway carriage box plate and box plate, big machinery external packing plate, and the various place that needs with sheet material.Because bamboo offset plate hardness is high, anti-folding, resistance to compression has substituted steel form in a lot of zones of using.Again because bamboo is be prone to cultivate, the fast forest that grows into forest just can be cut and to draw in three to five years, can replace timber, and therefore, it is the wood-based plate of main rapidoprint that the policy support of national forestry portion is greatly developed with bamboo, the use of having replaced wood type sheet material in a lot of places.
The utility model content
Technical problem: the utility model provide a kind of manufacture craft simple, cost is lower, structural integrity is good, not easy to crack, material environment friendly is durable, can satisfy the bamboo wood bridge deck of instructions for use.The bamboo wood bridge deck of the utility model can form the combining structure bridge with the steel girder, satisfy the needs of various span bridge design.
Technical scheme: the bamboo wood bridge deck of the utility model; Comprise presstressed reinforcing steel and superimposed a plurality of bridge floor plates; Presstressed reinforcing steel passes a plurality of bridge floor plates, and the two ends of presstressed reinforcing steel are passed backing plate and used the ground tackle fixed strain, fetter a plurality of bridge floor plates; The bridge deck veneer that the bridge floor plate is processed by a plurality of bamboo offset plates head and the tail joggle successively forms, and staggers mutually in the joggle position of two adjacent bridge panel sheets.
In the utility model, an end of the bridge deck veneer on the bridge floor plate is provided with groove width along advancing the tongue-and-groove that the groove direction increases gradually, and adjacent with it bridge deck veneer one end is provided with the tenon that is complementary with said tongue-and-groove, and tenon embeds in the tongue-and-groove.
In the utility model, the bridge floor plate is provided with the installing hole that supplies presstressed reinforcing steel to pass.
Beneficial effect: compared with prior art, the advantage of the utility model is:
The bamboo wood bridge deck of the utility model; Used for reference the structural form of existing lamination plank beam bridge; But the purposes for bamboo board is adjusted, and its basic ideas are: at first bamboo board only is used to construct bridge deck, and the axis direction of monolithic rectangle bamboo board is a direction across bridge; The polylith bamboo board longitudinally is arranged in and forms the bridge floor plate together, adopts the longitudinal prestressing reinforcing bar to make the polylith bamboo board vertically push the back then and forms the integrated deck plated construction.Therefore the utility model is different with the wooden construction bridge in the orientation of structural use and veneer; The length of longitudinal prestressing reinforcing bar can prolong greatly; Can effectively reduce the loss of prestress degree, it is joggle that the spreading splicing form of while monolithic bridge floor plate changes finger, strengthens bonding strength.
1. the bamboo wood bridge deck of the utility model are compared with the laminated board wooden bridge, mainly contain following 4 obvious advantages:
1) the formation veneer plate of bamboo wood bridge deck is edge-on for laterally, and the spreading mode changes longitudinal spliced for horizontally-spliced, can obviously reduce in bridge floor wide region inseam quantity;
2) the utility model bamboo wood bridge deck must form combining structure with supporting girder steel (like i beam), bear the bridge floor deadweight by vertical girder, can improve the bridge span ability greatly, have brought into play the advantage separately of bamboo wood and steel simultaneously; As long as through the girder spacing rationally is set, the bridge deck horizontal span is reduced, bridge deck thickness and deadweight thereof can effectively reduce, and also can reduce the bridge deck distortion simultaneously, improve functional performance, thus the bigger bending bearing capacity of performance.
3) (the finger plate is meant that the polylith wood board splicing forms to the traditional finger form of horizontally-spliced employing tapered end joint head replacement; The no longer sticking up and down clamping plate of pressing adopt the zigzag interface between vertical plank, the butt joint of similar two hand fingers intersection); Different with 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;
4) provide prestressed longitudinal reinforcement length obviously to extend for the bridge floor plate, bigger its loss of prestress of length also will obviously reduce, and final effective prestress is bigger.
2. the bamboo wood bridge deck batch production production degree of the utility model is high, and production efficiency is high.All bridge deck veneers and jointing all can be prefabricated in the factory and cut perforation; Transporting to on-the-spot directly assembling gets final product; And the processing pattern of bridge deck veneer is various; To form rigidity bigger thereby can require that the bridge deck veneer is carried out further Design and Machining according to reality, the improvement bridge deck that functional performance is more excellent.
3. the bamboo wood bridge deck cost of the utility model is lower, the material environmental protection.Bamboo wood as the important speed of China give birth to, one of the renewable forest reserves, it is fast to have a growth, becomes a useful person early, output is high, the characteristics that once afforestation can sustainable utilization.Mechanical property is at all no less than timber, and its speed of growth is also much fast than timber, compares with steel with concrete, and energy consumption is low in process, and discarded object is few, is undisputed " green building material ".
4. the bamboo wood bridge deck tensile strength of the utility model is very high, compares concrete slab, and there is not the possibility of cracking in the bridge deck structure under normal operating condition.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain.
Fig. 1 is the structural representation of the utility model bridge deck.
Fig. 2 is the plan view from above of the utility model bridge deck.
Fig. 3 is the elevation of the utility model bridge deck.
Fig. 4 is the left view of the utility model bridge deck.
Fig. 5 is the bridge deck veneer figure of the utility model bridge deck.
Fig. 6 is a plurality of bridge deck veneer aggregate erection figure of the utility model bridge deck.
Fig. 7 is a plurality of bridge floor plate aggregate erection sketch mapes of the utility model bridge deck.
Have among the figure: bridge floor plate 1, bridge deck veneer 2, presstressed reinforcing steel 3, ground tackle 4, backing plate 5, tongue-and-groove 21, tenon 22.
The specific embodiment
The bamboo wood bridge deck of the utility model; Comprise presstressed reinforcing steel 3 and superimposed a plurality of bridge floor plates 1; The bridge deck veneer 2 that bridge floor plate 1 is processed by a plurality of bamboo offset plates head and the tail joggle successively forms, and an end of the bridge deck veneer 2 on the bridge floor plate 1 is provided with groove width along advancing the tongue-and-groove 21 that the groove direction increases gradually, and adjacent with it bridge deck veneer 2 one ends are provided with the tenon 22 that is complementary with said tongue-and-groove 21; Said tenon 22 embeds in the tongue-and-groove 21, staggers mutually in the joggle position of two adjacent bridge panel sheets 1.Bridge deck veneer 2 is provided with the installing hole that supplies presstressed reinforcing steel 3 to pass, and presstressed reinforcing steel 3 passes a plurality of bridge floor plates 1 through installing hole, and the two ends of presstressed reinforcing steel 3 are passed backing plate 5 and with ground tackle 4 fixed strains, fettered a plurality of bridge floor plates 1.
The manufacture craft of the utility model bamboo wood bridge deck is:
1) bridge deck veneer 2 requires cutting to form by bamboo offset plate prototype sheet material according to design size, and laterally is connected spreading through tenon with tongue-and-groove, makes plate cover with the requirement of sufficient bridge floor design width; Like the wide 8.5m of two track bridges; Then laterally needing 2 splicings of 4 bridge deck veneers at least, joints is taked the joggle form, and bridge deck veneer 2 one sides process A/F along advancing the tongue-and-groove 21 that the groove direction increases (infundibulate) gradually; Opposite side processes the tenon 22 that matches; Seam crossing also scribbles the epoxy gluing agent in advance, to strengthen connecting integrality, forms the bridge floor plate 1 of designing requirement quantity.
2) on bridge floor plate 1, press the design attitude perforate in advance, pass through for prestressed reinforcement.
3) each bridge floor plate 1 bears against together after a plurality of flaggies are edge-on along laterally edge-on each other, forms bridge floor plate aggregate;
4) treat that all bridge floor plates 1 are after vertically all being in place; Place billet 5 at its position of opening two ends; Presstressed reinforcing steel 3 is passed billet 5 and all installing holes, and the stretch-draw through presstressed reinforcing steel forms a preload pressure and makes bridge floor plate aggregate form the integrated deck plate at two ends then.
The concrete installation procedure step of the utility model bamboo wood bridge deck in engineering construction is following:
To comprise joggle joint 21,22 in factory according to drawing, after the bridge deck veneer of installing hole 2 was prefabricated, assembly unit was directly carried out at the scene of transporting to;
The place is coated with epoxy resin binder at transverse joint, through joggle bridge deck veneer 2 is carried out horizontally-spliced spreading, becomes bridge floor plate 1;
With the overlapping placement of aliging of monolithic bridge floor plate 1 vertical a slice a slice, can be in advance prefabricated one with the identical template of realistic bridges panel size, after overlapping placement is accomplished, with form removable;
At presstressed reinforcing steel 3 surfaces coated one deck epoxy resin;
Presstressed reinforcing steel 3 is successively passed the hole of 18mm billet 5 and bridge floor plate 1 central authorities, hole diameter 41mm, presstressed reinforcing steel diameter 25.4mm, its ultimate tensile strength 1570MPa, backing plate 5 thickness 18mm, area 127mm * 127mm;
The bamboo offset plate material that adopted is the product of bamboo offset plate difficult to understand factory in the outsourcing Anji in the embodiment of the utility model and the test.
The bamboo offset plate mainly contains following production procedure: bamboo wood cut into slices-go green grass or young crops-block-spreading-drying-impregnation-drying-assembly-hot pressing-cutting edge, and concrete production technology is:
1. former bamboo is cut into slices, remove the relatively low innermost layer of outermost layer and intensity;
2. with rope bamboo chip is linked up, make bamboo mat or bamboo curtain splint, be convenient to assembly like this;
3. bamboo curtain splint is dried, kill the insect in the bamboo wood and remove moisture content, prevent the bamboo wood insect pest and because of moisture content rots, the bamboo curtain splint that dries is put into the phenolic resin glue pond again;
4. after treating that the bamboo curtain splint impregnation fully, in the glue pond, bamboo curtain splint is picked up, dry;
5. next be the production phase of bamboo plywood, the bamboo curtain splint that will dry is formed base;
6. after having organized badly, can the bamboo base be sent in the machine, carry out high temperature and steam pressure, about 20 minutes;
7. after the cooling, remove irregular limit, bamboo plywood is made into corresponding size.
Claims (3)
1. bamboo wood bridge deck; It is characterized in that comprise presstressed reinforcing steel (3) and superimposed a plurality of bridge floor plates (1), said presstressed reinforcing steel (3) passes a plurality of said bridge floor plates (1); Backing plate (5) is passed also with ground tackle (4) fixed strain in the two ends of presstressed reinforcing steel (3); Fetter a plurality of bridge floor plates (1), the bridge deck veneer (2) that said bridge floor plate (1) is processed by a plurality of bamboo offset plates head and the tail joggle successively forms, and staggers mutually in the joggle position of two adjacent bridge panel sheets (1).
2. bamboo wood bridge deck according to claim 1; It is characterized in that; One end of the bridge deck veneer (2) on the said bridge floor plate (1) is provided with groove width along advancing the tongue-and-groove (21) that the groove direction increases gradually; Adjacent with it bridge deck veneer (2) one ends are provided with the tenon (22) that is complementary with said tongue-and-groove (21), and said tenon (22) embeds in the tongue-and-groove (21).
3. bamboo wood bridge deck according to claim 1 is characterized in that, said bridge deck veneer (2) is provided with the installing hole that supplies presstressed reinforcing steel (3) to pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205538258U CN202559249U (en) | 2011-12-27 | 2011-12-27 | Bamboo bridge deck slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205538258U CN202559249U (en) | 2011-12-27 | 2011-12-27 | Bamboo bridge deck slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202559249U true CN202559249U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205538258U Withdrawn - After Issue CN202559249U (en) | 2011-12-27 | 2011-12-27 | Bamboo bridge deck slab |
Country Status (1)
| Country | Link |
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| CN (1) | CN202559249U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561180A (en) * | 2011-12-27 | 2012-07-11 | 东南大学 | Bamboo bridge deck |
| CN103614965A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Bamboo wood and concrete combined bridge deck slab |
| CN104631327A (en) * | 2014-12-26 | 2015-05-20 | 重庆交通大学 | Construction method for modern bamboo pedestrian truss bridge |
| CN114919266A (en) * | 2022-05-26 | 2022-08-19 | 浙江清华长三角军民协同创新研究院(嘉兴) | Method for manufacturing composite material sandwich structure of asymmetric panel |
-
2011
- 2011-12-27 CN CN2011205538258U patent/CN202559249U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561180A (en) * | 2011-12-27 | 2012-07-11 | 东南大学 | Bamboo bridge deck |
| CN102561180B (en) * | 2011-12-27 | 2013-10-30 | 东南大学 | Bamboo bridge deck |
| CN103614965A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Bamboo wood and concrete combined bridge deck slab |
| CN104631327A (en) * | 2014-12-26 | 2015-05-20 | 重庆交通大学 | Construction method for modern bamboo pedestrian truss bridge |
| CN114919266A (en) * | 2022-05-26 | 2022-08-19 | 浙江清华长三角军民协同创新研究院(嘉兴) | Method for manufacturing composite material sandwich structure of asymmetric panel |
| CN114919266B (en) * | 2022-05-26 | 2024-05-03 | 浙江清华长三角军民协同创新研究院(嘉兴) | Manufacturing method of composite sandwich structure of asymmetric panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121128 Effective date of abandoning: 20131030 |
|
| RGAV | Abandon patent right to avoid regrant |