CN202881844U - Wood and concrete combined type box girder - Google Patents
Wood and concrete combined type box girder Download PDFInfo
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- CN202881844U CN202881844U CN 201220558128 CN201220558128U CN202881844U CN 202881844 U CN202881844 U CN 202881844U CN 201220558128 CN201220558128 CN 201220558128 CN 201220558128 U CN201220558128 U CN 201220558128U CN 202881844 U CN202881844 U CN 202881844U
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Abstract
The utility model discloses a wood and concrete combined type box girder comprising a concrete top plate, a concrete base plate and two wooden abdomen boards respectively arranged at left side and the right side between the concrete top plate and the concrete base plate. The longitudinal length of the concrete top plate and that of the concrete base plate are both in accordance with the span of a box girder in construction. The width of the concrete top plate and that of the concrete base plate are both in accordance with the width, in the transverse bridge direction, of the box girder in construction. Each wooden abdomen board is a superimposed wooden board which is composed of a plurality of strip-shaped wooden boards assembled together side by side. The plurality of strip-shaped wooden boards are combined fixedly and integrally through a plurality of prestressed steel cables. The plurality of strip-shaped wooden boards are distributed on the same flat plane. The top portion of each strip-shaped wooden board is fixed on the concrete top plate and the bottom portion of each strip-shaped wooden board is fixed on the concrete bottom plate. The wood and concrete combined type box girder is reasonable in structural design, convenient to transport and install, shorter in construction period, less effected by climate, good in using effect, capable of making good use of the physical and mechanical property of wooden materials and capable of resolving a plurality of problems existing in an existing prestressed concrete box girder.
Description
Technical field
The utility model relates to a kind of case beam, especially relates to a kind of wood and Combined concrete formula case beam.
Background technology
Prestressed concrete box girder possesses good structural performance, is widely used in modern different types of rridges.Medium, stride in the Prestressed Concrete Bridges greatly, the prestressed concrete box girder that adopts, refer in particular to the beam of thin-walled box tee section, its cross section torsional rigidity is large, in practice of construction and use procedure, all possess good stability, and because roof and floor all has larger concrete area, thereby can effectively resist positive hogging moment, and satisfy the requirement of arrangement of reinforcement, can adapt to the structure with positive hogging moment.In addition, prestressed concrete box girder also can adapt to the requirement of Modern Construction method.
Yet nowadays top, the base plate of employed prestressed concrete box girder employing are concrete top, base plate.In the practice of construction process, because the unit weight of concrete top, base plate is large, its transportation is installed and is inconvenient; Secondly, concrete top, base plate easily ftracture, and often work with cracking, thereby difficulty of construction is large, mass defect easily occurs and reinforce maintenance difficult.In addition, the construction climate impact of concrete top, base plate is larger, and especially winter low temperature is larger on concrete condensation effect impact, and its durability is not also popularized in the low developed area.Simultaneously, the maintenance hardening period of concrete top, base plate, is long, and construction period is longer.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of wood and Combined concrete formula case beam are provided, its reasonable in design, easy transportation and installation, construction period is shorter and climate impact is less, result of use good, the physical and mechanical properties of timber be can take full advantage of, and number of drawbacks and deficiency that pre existing prestressed concrete case beam exists effectively solved.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of wood and Combined concrete formula case beam, it is characterized in that: comprise concrete roof, at the concrete floor under the concrete roof and two wooden webs that are laid in respectively the left and right sides between concrete roof and the concrete floor, concrete roof and concrete floor all are level to laying, and two described wooden webs are the bilateral symmetry laying; The longitudinal length of described concrete roof and concrete floor is all directly consistent with striding of construction case beam, and the width of the two is all consistent with the direction across bridge width of construction case beam; Described wooden web is superimposed plank, the described superimposed plank rectangle compoboard that the polylith strip plank that is bolted together side by side forms of serving as reasons, and the described strip plank of polylith is fastenedly connected by the multiple tracks prestressed strand and is integrated; The described strip plank of polylith is laid on the same plane, and the described strip plank of polylith all from top to bottom is to tilt to lay; The top of the described strip plank of polylith all is fixed on the concrete roof, and the bottom of the described strip plank of polylith all is fixed on the concrete floor.
Above-mentioned a kind of wood and Combined concrete formula case beam, it is characterized in that: all be fastenedly connected by a plurality of indented bars connectors one between the top of two described wooden webs and the concrete roof, and all be fastenedly connected by indented bars connector two between the bottom of two described wooden webs and the concrete floor.
Above-mentioned a kind of wood and Combined concrete formula case beam, it is characterized in that: the described prestressed strand of multiple tracks be laid in same list or about a minute multiple row lay, correspondence has a plurality of preboring ducts of passing for the described prestressed strand of multiple tracks respectively on the described wooden web, and anchoring is all carried out by anchor ingot plate in the two ends, the left and right sides of prestressed strand.
Above-mentioned a kind of wood and Combined concrete formula case beam, it is characterized in that: a plurality of described indented bars connectors one are embedded in the bottom of concrete roof from front to back in advance, and the top correspondence of described wooden web has a plurality of ducts one of installing for a plurality of described indented bars connectors one respectively, and the top height of a plurality of described indented bars connectors one all is lower than the apical side height of concrete roof; A plurality of described indented bars connectors one are fixed in the wooden web by the bonding adhesive of can in a plurality of described ducts one respectively;
A plurality of described indented bars connectors two are embedded in the top of concrete floor from front to back in advance, and the bottom correspondence of described wooden web has a plurality of ducts two of installing for a plurality of described indented bars connectors two respectively, and the bottom height of a plurality of described indented bars connectors two all is lower than the bottom surface height of concrete floor; A plurality of described indented bars connectors two are fixed in the wooden web by the bonding adhesive of can in a plurality of described ducts two respectively.
Above-mentioned a kind of wood and Combined concrete formula case beam is characterized in that: described indented bars connector one and described indented bars connector two, and all for crooked by two indented barss and interconnect the rear scissor-shaped connector that forms.
Above-mentioned a kind of wood and Combined concrete formula case beam, it is characterized in that: the diameter of two described indented barss that adopt in the described indented bars connector one is all identical, and the large at least 1mm of diameter of the indented bars that adopts in the described indented bars connector one of the aperture ratio in described duct one; The diameter of two described indented barss that adopt in the described indented bars connector two is all identical, and the large at least 1mm of diameter of the indented bars that adopts in the described indented bars connector two of the aperture ratio in described duct two.
Above-mentioned a kind of wood and Combined concrete formula case beam is characterized in that: all identical to width about the described strip plank of polylith, and the described strip plank of polylith about all the thickness of slab with superimposed plank is identical to width.
Above-mentioned a kind of wood and Combined concrete formula case beam, it is characterized in that: a plurality of described indented bars connectors one evenly are laid in the bottom of concrete roof, and a plurality of described indented bars connector two evenly is laid in the top of concrete floor.
Above-mentioned a kind of wood and Combined concrete formula case beam is characterized in that: the described prestressed strand of multiple tracks is laid at grade; The thickness of slab of described wooden web is 38mm～76mm, and the indented bars diameter that adopts is Φ 12mm～Φ 24mm in described indented bars connector one and the described indented bars connector two.
Above-mentioned a kind of wood and Combined concrete formula case beam, it is characterized in that: described concrete roof and concrete floor are the concrete prefabricated board that machines at precasting yard in advance, and the thickness of concrete roof and concrete floor is 18mm～56mm.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design, easy construction and construction cost are low, and speed of application is fast.
2, adopt the superimposed plank of prestressing force to replace the concrete web, reasonable in design, so that the weight reduction of case beam, easy transportation and installation.Secondly, do not need the processes such as maintenance sclerosis, construction period is relatively short and the climate impact is less.During practice of construction, concrete roof and concrete floor can complete in advance, namely finish first the manufacturing process of concrete roof and concrete floor at precasting yard.
3, result of use is good, and the ability that the superimposed plank of prestressing force transmits load is stronger, is repeatedly possessing preferably durability under the local function.In addition, the water resistance of the superimposed plank of prestressing force is also better; In addition, also so that bridge possesses stronger aesthetic feeling.
4, can take full advantage of physics and the mechanical property thereof of timber, effectively wood, mixed bi-material are combined, maximize favourable factors and minimize unfavourable ones, the stability of structure, the service efficiency of material have been improved, having solved the number of drawbacks that existing prestressed concrete box girder exists, is a kind of economy, reasonable and efficient box-beam structure form.
In sum, the utility model reasonable in design, easy transportation and installation, construction period is shorter and climate impact is less, result of use good, can take full advantage of physics and the mechanical property thereof of timber, can effectively solve the transportation that pre existing prestressed concrete case beam exists and inconvenience is installed, the concrete roof and floor is easy to crack, difficulty of construction large and reinforces number of drawbacks and the deficiencies such as maintenance difficult, the impact of construction climate is large, construction period is long.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is perspective view of the present utility model.
Fig. 2 is the structural representation of the superimposed plank of the utility model.
Fig. 3 is the connection status schematic diagram between the utility model concrete roof and the wooden web.
Fig. 4 is the use state reference map of the utility model anchor ingot plate.
Description of reference numerals:
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model comprises concrete roof 1-1, at the concrete floor 1-2 under the concrete roof 1-1 and two wooden webs 2 that are laid in respectively the left and right sides between concrete roof 1-1 and the concrete floor 1-2, described concrete roof 1-1 and concrete floor 1-2 all are level to laying, and two described wooden webs 2 are the bilateral symmetry laying.The longitudinal length of described concrete roof 1-1 and concrete floor 1-2 is all directly consistent with striding of construction case beam, and the width of the two is all consistent with the direction across bridge width of construction case beam.Described wooden web 2 is superimposed plank 6, the described superimposed plank 6 rectangle compoboard that the polylith strip plank that is bolted together side by side forms of serving as reasons, and the described strip plank of polylith is fastenedly connected by multiple tracks prestressed strand 4 and is integrated.The described strip plank of polylith is laid on the same plane, and the described strip plank of polylith all from top to bottom is to tilt to lay.The top of the described strip plank of polylith all is fixed on the concrete roof 1-1, and the bottom of the described strip plank of polylith all is fixed on the concrete floor 1-2.
In the present embodiment, the transverse width of the described strip plank of polylith is all identical with thickness in the described superimposed plank 6.During practice of construction, only need carry out different selections to the longitudinal length of described strip plank with quantity, the purpose that just can easy realization height and the length of superimposed plank 6 be adjusted accordingly is to satisfy the instructions for use of different bridges.
During actual the use, the bridge that the utility model was suitable for is the bridge in Middle Or Small Span footpath, and the footpath of striding of Short/Medium Span Bridge is generally 5m～40m.Thereby in the present embodiment, the longitudinal length of described wooden web 2 is generally 5m～40m.
In the present embodiment, the described strip plank of polylith in the described superimposed plank 6 utilizes the described prestressed strand 4 of multiple tracks to add in advance the side direction compressive stress and is fastenedly connected, and not only simple in structure, processing and fabricating makes things convenient for and stressed effect is good.During practice of construction, the described prestressed strand 4 of multiple tracks be laid in same list or about a minute multiple row lay, correspondence has the preboring duct of passing for prestressed strand 4 on the described wooden web 2, and anchoring is all carried out by anchor ingot plate 3 in the two ends, the left and right sides of prestressed strand 4.In addition, the superimposed number of plies of described superimposed plank 6 (quantity that namely forms the described strip plank of polylith of superimposed plank 6) is determined the length requirement of construction case beam by Practical Project.
Simultaneously, the footpath of striding according to the thickness of slab of superimposed plank 6 and the case beam of constructing adjusts accordingly the columns of laying prestressed strand 4.When the thickness of superimposed plank 6 is larger, the columns of the prestressed strand of laying 4 is more; Vice versa.And directly larger when striding of the case beam of constructing, the columns of the prestressed strand of laying 4 is more; Vice versa.In the present embodiment, the described prestressed strand 4 of multiple tracks is laid in same listing.During practice of construction, two row were laid about the described prestressed strand 4 of multiple tracks also can divide.
Actual when described prestressed strand 4 is constructed, prestressed strand 4 is passed from the preboring duct of superimposed plank 6 interior settings, the anchor ingot plate 3 of the left and right side of the both ends of prestressed strand 4 by being laid in superimposed plank 6 carries out anchoring afterwards.Simultaneously, described prestressed strand 4 needs elder generation through preservative treatment, and its method for anticorrosion treatment is identical with the method for anticorrosion treatment of conventional prestressed reinforcement.
In conjunction with Fig. 4, in the present embodiment, described anchor ingot plate 3 comprises the channel-section steel that is laid in superimposed plank 6 sides, have on the described channel-section steel for what prestressed strand 4 passed and pass the hole, and prestressed strand 4 from described pass the hole and pass after, be fixed with fastening bolt 7, and pad is equipped with rectangle backing plate 8 between described fastening bolt 7 and the described channel-section steel.
In conjunction with Fig. 3, in the present embodiment, all be fastenedly connected by a plurality of indented bars connector one 5-1 between the top of two described wooden webs 2 and the concrete roof 1-1, and all be fastenedly connected by indented bars connector two between the bottom of two described wooden webs 2 and the concrete floor 1-2.
In the present embodiment, a plurality of described indented bars connector one 5-1 are embedded in the bottom of concrete roof 1-1 from front to back in advance, and the top correspondence of described wooden web 2 has a plurality of duct one 5-2 that install for a plurality of described indented bars connector one 5-1 respectively, and the top height of a plurality of described indented bars connector one 5-1 all is lower than the apical side height of concrete roof 1-1.A plurality of described indented bars connector one 5-1 are fixed in the wooden web 2 by the bonding adhesive of can in a plurality of described duct one 5-2 respectively.
A plurality of described indented bars connectors two are embedded in the top of concrete floor 1-2 from front to back in advance, and the bottom correspondence of described wooden web 2 has a plurality of ducts two of installing for a plurality of described indented bars connectors two respectively, and the bottom height of a plurality of described indented bars connectors two all is lower than the bottom surface height of concrete floor 1-2.A plurality of described indented bars connectors two are fixed in the wooden web 2 by the bonding adhesive of can in a plurality of described ducts two respectively.
In the present embodiment, described indented bars connector one 5-1 and described indented bars connector two are all for crooked by two indented barss and interconnect the rear scissor-shaped connector that forms.
During actual processing and fabricating, the diameter of two described indented barss that adopt among described indented bars connector one 5-1 is all identical, and the large at least 1mm of diameter of the indented bars that adopts among described indented bars connector one 5-1 of the aperture ratio of described duct one 5-2.The diameter of two described indented barss that adopt in the described indented bars connector two is all identical, and the large at least 1mm of diameter of the indented bars that adopts in the described indented bars connector two of the aperture ratio in described duct two.
In the present embodiment, all identical to width about the described strip plank of polylith, and the described strip plank of polylith about all the thickness of slab with superimposed plank 6 is identical to width.
Actually add man-hour, only need longitudinal length and the quantity of described strip plank to adjust, the purpose that just can easy realization the longitudinal length of superimposed plank 6 be adjusted accordingly is striden the instructions for use of footpath bridge to satisfy difference.In the present embodiment, described strip plank is elongated plank.
In the present embodiment, a plurality of described indented bars connector one 5-1 evenly are laid in the bottom of concrete roof 1-1, and a plurality of described indented bars connector two evenly is laid in the top of concrete floor 1-2.
When reality is constructed to a plurality of described indented bars connector one 5-1, only need to be embedded in advance indented bars connector one 5-1 of concrete roof 1-1 bottom, pierce in duct one 5-2 that wooden web 2 top correspondences open, stick with glue again afterwards agent can is carried out in one 5-2 inside, duct, and form one with fastening bonding adhesive can layer one 5-3 that is fixed in the wooden web 2 of indented bars connector one 5-1.Correspondingly, when a plurality of described shear connectors two are constructed, only need to be embedded in advance the described indented bars connector two at concrete floor 1-2 top, pierce in the described duct two that wooden web 2 bottom correspondences open, stick with glue again afterwards agent can is carried out in two inside, described duct, and form one with the described indented bars connector two fastening bonding adhesive can layers two that are fixed in the wooden web 2.
To sum up, a plurality of described indented bars connector one 5-1 were fixed before concreting top board 1-1, and a plurality of described indented bars connector one 5-1 closely connects as one with concrete roof 1-1 in concrete roof 1-1 setting and harden process; Correspondingly, a plurality of described indented bars connectors two were fixed before concreting base plate 1-2, and a plurality of described indented bars connector two closely connects as one with concrete floor 1-2 in concrete floor 1-2 setting and harden process.During practice of construction, a plurality of described indented bars connector one 5-1 and a plurality of described indented bars connector two also can adopt other fixed form to be fixed.
During practice of construction, the bonding adhesive that adopts can adopt dissimilar bonding adhesive.In the present embodiment, described bonding adhesive is bi-component polyurethane adhesive.In the actual use procedure, the selection of described bonding adhesive 5-3 is relevant with the load that manufacturing process and indented bars bear.
During practice of construction, according to the actual demand that is fixedly connected with, spacing between neighbouring two described indented bars connector one 5-1 and neighbouring two the described indented bars connectors two is adjusted, and when the spacing between neighbouring two described indented bars connector one 5-1 and neighbouring two the described indented bars connectors two more hour, the quality of connection between described steel web 2 and wooden top board 1-1 and the wooden base plate 1-2 is more reliable; Vice versa.
In the present embodiment, a plurality of described indented bars connector one 5-1 are laid on the same straight line, and correspondingly, a plurality of described indented bars connectors two also are laid on the same straight line.During actual installation, intersect about a plurality of described indented bars connector one 5-1 and a plurality of described indented bars connector two also can all be and lay, like this, a plurality of described indented bars connector one 5-1 are laid on a jaggies, and correspondingly a plurality of described indented bars connectors two also are laid on the jaggies.That is to say, a plurality of described indented bars connector one 5-1 carry out interlaced arrangement according to a determining deviation or arrange along straight line on wooden web 2; Correspondingly, a plurality of described indented bars connectors two carry out interlaced arrangement in wooden web 2 bottoms according to a determining deviation or arrange along straight line.
In the present embodiment, in order evenly to pour into described bonding adhesive, open respectively a groove along the length direction of described indented bars connector one 5-1 and described indented bars connector two.In the practice of construction process, also available brush is evenly smeared described bonding adhesive along described duct one with along the length direction of described indented bars connector one 5-1; Equally, also available brush is evenly smeared described bonding adhesive along described duct two with along the length direction of described indented bars connector two.
In the present embodiment, the described prestressed strand 4 of multiple tracks is laid at grade, that is to say, the described prestressed strand 4 of multiple tracks is laid in same listing.The thickness of slab of described wooden web 2 is 38mm～76mm, and the indented bars diameter that adopts is Φ 12mm～Φ 24mm in described indented bars connector one 5-1 and the described indented bars connector two.
In the present embodiment, described concrete roof 1-1 and concrete floor 1-2 are the concrete prefabricated board that machines at precasting yard in advance, and the thickness of concrete roof 1-1 and concrete floor 1-2 is 18mm～56mm.
During practice of construction, can according to concrete needs, the diameter of the indented bars that adopts and the aperture of described through hole one 5-2 and described through hole two in thickness of slab, concrete roof 1-1 and concrete floor 1-2, indented bars connector one 5-1 and the described indented bars connector two of wooden web 2 be adjusted accordingly.
Specifically add man-hour, the specification size that described indented bars connector one 5-1 and described indented bars connector two adopt, should consider according to the combined factors such as thickness of importance, load characteristics, method of attachment, working environment and the wooden web 2 of construction box-beam structure, adopt the connector of specification.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (10)
1. a wood and Combined concrete formula case beam, it is characterized in that: comprise concrete roof (1-1), be positioned at concrete floor (1-2) and two wooden webs (2) that are laid in respectively the left and right sides between concrete roof (1-1) and the concrete floor (1-2) under the concrete roof (1-1), concrete roof (1-1) all is level to laying with concrete floor (1-2), and two described wooden webs (2) are the bilateral symmetry laying; The longitudinal length of described concrete roof (1-1) and concrete floor (1-2) is all directly consistent with striding of construction case beam, and the width of the two is all consistent with the direction across bridge width of construction case beam; Described wooden web (2) is superimposed plank (6), described superimposed plank (6) the rectangle compoboard that the polylith strip plank that is bolted together side by side forms of serving as reasons, and the described strip plank of polylith is fastenedly connected by multiple tracks prestressed strand (4) and is integrated; The described strip plank of polylith is laid on the same plane, and the described strip plank of polylith all from top to bottom is to tilt to lay; The top of the described strip plank of polylith all is fixed on the concrete roof (1-1), and the bottom of the described strip plank of polylith all is fixed on the concrete floor (1-2).
2. according to a kind of wood claimed in claim 1 and Combined concrete formula case beam, it is characterized in that: all be fastenedly connected by a plurality of indented bars connectors one (5-1) between the top of two described wooden webs (2) and the concrete roof (1-1), and all be fastenedly connected by indented bars connector two between the bottom of two described wooden webs (2) and the concrete floor (1-2).
3. according to claim 1 or 2 described a kind of wood and Combined concrete formula case beam, it is characterized in that: the described prestressed strand of multiple tracks (4) be laid in same list or about a minute multiple row lay, the upper correspondence of described wooden web (2) has a plurality of preboring ducts that supply respectively the described prestressed strand of multiple tracks (4) to pass, and anchoring is all carried out by anchor ingot plate (3) in the two ends, the left and right sides of prestressed strand (4).
4. according to a kind of wood claimed in claim 2 and Combined concrete formula case beam, it is characterized in that: a plurality of described indented bars connectors one (5-1) are embedded in the bottom of concrete roof (1-1) from front to back in advance, and the top correspondence of described wooden web (2) has a plurality of ducts one (5-2) that supply respectively a plurality of described indented bars connectors one (5-1) to install, and the top height of a plurality of described indented bars connectors one (5-1) all is lower than the apical side height of concrete roof (1-1); A plurality of described indented bars connectors one (5-1) are fixed in the wooden web (2) by the bonding adhesive of can in a plurality of described ducts one (5-2) respectively;
A plurality of described indented bars connectors two are embedded in the top of concrete floor (1-2) from front to back in advance, and the bottom correspondence of described wooden web (2) has a plurality of ducts two of installing for a plurality of described indented bars connectors two respectively, and the bottom height of a plurality of described indented bars connectors two all is lower than the bottom surface height of concrete floor (1-2); A plurality of described indented bars connectors two are fixed in the wooden web (2) by the bonding adhesive of can in a plurality of described ducts two respectively.
5. according to a kind of wood claimed in claim 4 and Combined concrete formula case beam, it is characterized in that: described indented bars connector one (5-1) and described indented bars connector two, all for crooked by two indented barss and interconnect the rear scissor-shaped connector that forms.
6. according to a kind of wood claimed in claim 5 and Combined concrete formula case beam, it is characterized in that: the diameter of two described indented barss that adopt in the described indented bars connector one (5-1) is all identical, and the large at least 1mm of diameter of the middle indented bars that adopts of the described indented bars connector one of the aperture ratio of described duct one (5-2) (5-1); The diameter of two described indented barss that adopt in the described indented bars connector two is all identical, and the large at least 1mm of diameter of the indented bars that adopts in the described indented bars connector two of the aperture ratio in described duct two.
7. according to claim 1 or 2 described a kind of wood and Combined concrete formula case beam, it is characterized in that: all identical to width about the described strip plank of polylith, and the described strip plank of polylith about all the thickness of slab with superimposed plank (6) is identical to width.
8. according to claim 1 or 2 described a kind of wood and Combined concrete formula case beam, it is characterized in that: a plurality of described indented bars connectors one (5-1) evenly are laid in the bottom of concrete roof (1-1), and a plurality of described indented bars connector two evenly is laid in the top of concrete floor (1-2).
9. according to a kind of wood claimed in claim 5 and Combined concrete formula case beam, it is characterized in that: the described prestressed strand of multiple tracks (4) is laid at grade; The thickness of slab of described wooden web (2) is 38mm～76mm, and the indented bars diameter that adopts is Φ 12mm～Φ 24mm in described indented bars connector one (5-1) and the described indented bars connector two.
10. according to a kind of wood claimed in claim 9 and Combined concrete formula case beam, it is characterized in that: described concrete roof (1-1) and concrete floor (1-2) are the concrete prefabricated board that machines at precasting yard in advance, and the thickness of concrete roof (1-1) and concrete floor (1-2) is 18mm～56mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220558128 CN202881844U (en) | 2012-10-26 | 2012-10-26 | Wood and concrete combined type box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220558128 CN202881844U (en) | 2012-10-26 | 2012-10-26 | Wood and concrete combined type box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202881844U true CN202881844U (en) | 2013-04-17 |
Family
ID=48073285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220558128 Withdrawn - After Issue CN202881844U (en) | 2012-10-26 | 2012-10-26 | Wood and concrete combined type box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202881844U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888812A (en) * | 2012-10-26 | 2013-01-23 | 长安大学 | Wood and concrete combined type box beam |
| CN104963276A (en) * | 2015-06-23 | 2015-10-07 | 江苏德丰建设集团有限公司 | Steel and bamboo combined box girder |
-
2012
- 2012-10-26 CN CN 201220558128 patent/CN202881844U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888812A (en) * | 2012-10-26 | 2013-01-23 | 长安大学 | Wood and concrete combined type box beam |
| CN102888812B (en) * | 2012-10-26 | 2014-07-09 | 长安大学 | Wood and concrete combined type box beam |
| CN104963276A (en) * | 2015-06-23 | 2015-10-07 | 江苏德丰建设集团有限公司 | Steel and bamboo combined box girder |
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