CN201268825Y - Steel structure supported porous bearing girder - Google Patents
Steel structure supported porous bearing girder Download PDFInfo
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- CN201268825Y CN201268825Y CNU2008201330386U CN200820133038U CN201268825Y CN 201268825 Y CN201268825 Y CN 201268825Y CN U2008201330386 U CNU2008201330386 U CN U2008201330386U CN 200820133038 U CN200820133038 U CN 200820133038U CN 201268825 Y CN201268825 Y CN 201268825Y
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- beam body
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- spandrel girder
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Abstract
A porous spandrel girder supported by a steel framework comprises a single girder body made of fibre reinforced composite material and is characterized by comprising an upper girder body which is formed by juxtaposing a plurality of single girder bodies internally provided with mesopores extending along the length direction of the girder bodies; and the lower end face of the upper girder body is provided with a steel framework body, and the steel framework body and the upper girder body are supported and fixed. The porous spandrel girder supported by a steel framework adopts a combined structure of the upper girder body made of fibre reinforced composite material and a support body of the steel framework, has both high tensile strength of the upper girder body and excellent compressive property of the steel framework body, enables all performance indexes of the whole spandrel girder to be better than those of the bearing body of the prior various bridges, is convenient to manufacture and has lower construction difficulty and cost, can satisfy the construction requirements of bridges of thousands of spans and the building needs of special high spandrel girders and ensure the firmness and the safety of use.
Description
Technical field
The utility model belongs to the particularly bridge main body of long span and overlength span of bridge construction technology, is specifically related to the porous spandrel girder that the high steel structure of a kind of tensile strength and compressive strength supports.
Background technology
Development along with railway, road and bridge construction, bridge is in more the flexible structure of large span develops, to satisfy the needs of corresponding construction, what the bridge of large span primarily solved is the safety of structure under pneumatic and driving dynamic response and the requirement of stable problem and personal safety under the high speed traveling condition and comfort level.Because the needs of load-bearing and stability and safety, the main at present load-bearing main body structure that adopts steel concrete as large span and super-span bridge, concrete structure has many good qualities, but As time goes on, its burn into deterioration problem constantly takes place, the most common with the steel corrosion, this not only influences the normal use and the life-span of engineering structures, also produces engineering safety and accident potential to a great extent.
Fibre reinforced composites (FRP) are to use increasingly extensive a kind of novel structural meterials in recent years in civil engineering.It has high-strength, lightweight, remarkable advantage such as corrosion-resistant, at the reinforcement and strengthening of structure, go along with sb. to guard him aspect such as anticorrosion and obtained good application.Along with the superior function of FRP material is approved by engineering circle gradually, external many engineerings begin it is applied in the newly-built bridge, or even in the Longspan Bridge.Since the seventies in last century, the FRP material just begins to attempt using in bridge engineering.Britain, the U.S. and Israel use this new material at first as the main member in building structure and the bridge construction, and what adopted mostly at that time is GFRP (glass fibre reinforced composion, i.e. glass fiber reinforced plastic).
Present fibre reinforced composites are in the application of bridge construction, all adopt transversely arranged box carbon fibre reinforced composite as main body, arrangement by a plurality of box main bodys forms pontic, though it has light weight, advantages of high strength, but there are the following problems: at first be that its load-bearing property can't be compared with steel structure concrete, limited in a lot of bridge constructions, next is that the impact strength of the local location of this material is lower than steel concrete, because of the strong impact force at tiny position deformation and destruction are taken place easily, be the extension poor-performing at last, the rigidity of three-dimensional still can not satisfy the needs that long span is built.
This case inventor had invented once that a kind of to have middle cancelled structure, stretching-resisting bending-resisting and a modulus of elasticity higher, hollow type beam that own wt is light and the bridge main body that adopts the hollow type beam, this hollow type beam can be used as the load-bearing main body of bridge, obviously improves the anti-pressure ability and the low difficulty of construction of bridge.Though find that in experimentation the structural strength of whole bridge main body is very high, can't satisfy long span in some cases or have the bridge needs of special load-bearing requirement.
The utility model content
The utility model provides a kind of have concurrently simultaneously excellent tensile strength and compressive strength, the porous spandrel girder that steel structure firmly whole and that stability is higher supports, it has the advantage of steel structure bridge spandrel girder and FRP spandrel girder concurrently, not only construction and quick for installation, fastness and load-bearing property are good, can also be applicable to the construction and installation of various long span, its load bearing stength and tensile strength all are better than the bridge bearing body of existing steel and concrete structure.
For achieving the above object, the technical solution adopted in the utility model is as follows:
The porous spandrel girder that a kind of steel structure supports, the single-beam body that comprises fibre reinforced composites, it is characterized in that described porous spandrel girder comprises that inside has along a plurality of single-beam bodies upper beam body of forming arranged side by side of the mesopore of beam body length direction extension, the lower surface of described upper beam body is provided with steel framework body, support fixation between described steel framework body and upper beam body.
Described upper beam body is that the middle part is the domes to upper process, described steel framework body be arranged on the upper beam body the below and and the upper beam body between fixing, make it to forming supporting role between the upper beam body.
Described single-beam body is to have the multi-hole beam that is provided with a plurality of mesopores along single-beam body length direction, the inner chamber of single-beam body is provided with two vertical gussets that distribute with two lateral cross, the mesopore that the described a plurality of cross sections of formation are square structure between the outer wall of described gusset and single-beam body.
Parallel arranged and extend between described single-beam body along the length direction of porous spandrel girder, one outer wall corner of each single-beam body is provided with protuberance, the opposite side outer wall is provided with the recess that cooperates with it, and the recess of single-beam body adjacent one another are cooperates spiral-lock to form described upper beam body with the protuberance of another single-beam body.
The upper and lower outer wall of described single-beam body extends to a side, forms two protuberances, and the opposite side of described upper and lower outer wall caves inward, and forms two recesses that cooperate with described protuberance.
Be equipped with the tension rope in the mesopore of described single-beam body, be strained and fixed between the both ends of the two ends of described tension rope and single-beam body, make the middle part of single-beam body be domes to upper process.
Described steel framework body is the domes that cooperate with the lower surface of upper beam body, and described steel framework body comprises a plurality of parallel arch main members and the steel structure assembly of fixing between it.
Described steel framework body is the domes that cooperate with the lower surface of upper beam body, and described steel framework body comprises a plurality of steel structure casings that are provided with along the bearing of trend arrangement, and is fixedly connected between described steel structure casing.
The employed single-beam body of porous spandrel girder that this steel structure supports can adopt disposable expressing technique moulding to produce, raw material is selected existing glass fibre reinforced composion for use, length can freely be selected according to the length of pontic spandrel girder, middle no seam satisfies the needs that thousands of meters long span are built.The cross section of this single-beam body can have nine rectangular cavities, and the outer wall of single-beam body and two inner vertical gussets that distribute with two lateral cross can alleviate the weight of hollow type beam effectively, and improve its load bearing stength.The single performance that is connected that forms behind this upper beam body that is set up in parallel of a plurality of single-beam bodies when guarantee using, in the left and right sides of single-beam body two protuberances and two recesses that cooperatively interact can be set respectively, a plurality of like this single-beam bodies just can laterally be arranged in order snapping and form the weight-bearing surface that width is satisfied the demand.This porous spandrel girder can adopt the higher domes of load bearing stength, the tension rope is set in the mesopore of each single-beam body, tension by the tension rope makes the single-beam body form the domes of certain sagitta, this structure is guaranteeing can not destroy the structural integrity of the upper beam body of single-beam body and its composition under the prerequisite that the load-bearing degree can increase by a relatively large margin.
The lower surface of upper beam body is close to steel framework body is set, and utilizes the support force of steel framework body to offer the upper beam body with more excellent load-bearing property.Can adopt multiple mode to fix with the upper beam body between this steel framework body, steel framework body is the best to adopt the domes that match with the upper beam body also simultaneously.Steel framework body can adopt the i iron skeleton to be aided with the fixing structure of angle steel, also can adopt comparatively popular box steel framework body, can certainly adopt the steel framework body of other structures, and it is a condition to satisfy the needed auxiliary load bearing stength of upper beam body.
The beneficial effects of the utility model are, the porous spandrel girder that this steel structure supports adopts the upper beam body of fibre reinforced composites and the combining structure of steel framework body supporter, taken into account the excellent compressive property of the high-tensile and the steel framework body of upper beam body, make every performance indications of whole spandrel girder all be better than existing different types of rridges weight body, it is easy to make, difficulty of construction and cost are low, can be applicable to the needs of the bridge construction of thousands of rice degree of collapsing, and can satisfy the needs of extraordinary high load-bearing bridge construction, and can guarantee steadiness and the safety used.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the composition structural representation of bridge main body among the utility model embodiment 1;
Fig. 3 is the structural representation of the utility model embodiment 2.
The specific embodiment
Embodiment 1 as depicted in figs. 1 and 2, the porous spandrel girder that this steel structure supports adopts the single-beam body 11 and steel framework body 20 combining structures of fibre reinforced composites, the porous spandrel girder comprises that inside has along 8 single-beam bodies, the 11 upper beam bodies of forming 10 arranged side by side of the mesopore of beam body length direction extension, the lower surface of upper beam body is provided with steel framework body 20, support fixation between steel framework body and upper beam body.Upper beam body 10 is domes to upper process for the middle part, steel framework body 20 be arranged on the upper beam body the below and and the upper beam body between fixing, make it to forming supporting role between the upper beam body.
Single-beam body 11 is for having the multi-hole beam that is provided with 9 mesopores 115 along single-beam body length direction, the inner chamber of single-beam body is provided with two vertical gussets 116 that distribute with two lateral cross, forms described 9 mesopores that the cross section is a square structure between the outer wall of gusset and hollow type beam.Parallel arranged and extend between the single-beam body along the length direction of porous spandrel girder, the upper and lower outer wall of each single-beam body extends to a side, form two protuberances 111 and 112, the opposite side of described upper and lower outer wall caves inward, and forms two recesses 113 and 114 that cooperate with described protuberance.The recess of single-beam body adjacent one another are cooperates spiral-lock to form described upper beam body with the protuberance of another single-beam body.Steel framework body is the domes that cooperate with the lower surface of upper beam body, and steel framework body comprises a plurality of parallel arch main members and the angle steel component of fixing between it.
Embodiment 2 as shown in Figure 3, the porous spandrel girder that this steel structure supports adopts the single-beam body and steel framework body 20 combining structures of fibre reinforced composites, the porous spandrel girder comprises that inside has along a plurality of single-beam bodies upper beam body of forming 10 arranged side by side of the mesopore of beam body length direction extension, the lower surface of upper beam body 10 is provided with steel framework body 20, support fixation between steel framework body and upper beam body.The upper beam body is that the middle part is the domes to upper process, steel framework body be arranged on the upper beam body the below and and the upper beam body between fixing, make it to forming supporting role between the upper beam body.
The single-beam body is to have the multi-hole beam that is provided with 9 mesopores along single-beam body length direction, and the inner chamber of single-beam body is provided with two vertical gussets that distribute with two lateral cross, forms described 9 mesopores that the cross section is a square structure between the outer wall of gusset and hollow type beam.Parallel arranged and extend between the single-beam body along the length direction of porous spandrel girder, the upper and lower outer wall of each single-beam body extends to a side, forms two protuberances, and the opposite side of described upper and lower outer wall caves inward, and forms two recesses that cooperate with described protuberance.The recess of single-beam body adjacent one another are cooperates spiral-lock to form described upper beam body with the protuberance of another single-beam body.Steel framework body 20 is the domes that cooperate with the lower surface of upper beam body, and steel framework body 20 comprises a plurality of steel structure casings that are provided with along the bearing of trend arrangement, and is fixedly connected between steel structure casing.
Claims (8)
1. the porous spandrel girder that supports of a steel structure, the single-beam body that comprises fibre reinforced composites, it is characterized in that described porous spandrel girder comprises that inside has along a plurality of single-beam bodies upper beam body of forming arranged side by side of the mesopore of beam body length direction extension, the lower surface of described upper beam body is provided with steel framework body, support fixation between described steel framework body and upper beam body.
2. the porous spandrel girder that steel structure according to claim 1 supports, it is characterized in that described upper beam body is that the middle part is the domes to upper process, described steel framework body be arranged on the upper beam body the below and and the upper beam body between fixing, make it to forming supporting role between the upper beam body.
3. the porous spandrel girder that steel structure according to claim 1 supports, it is characterized in that described single-beam body is to have the multi-hole beam that is provided with a plurality of mesopores along single-beam body length direction, the inner chamber of single-beam body is provided with two vertical gussets that distribute with two lateral cross, the mesopore that the described a plurality of cross sections of formation are square structure between the outer wall of described gusset and single-beam body.
4. the porous spandrel girder that steel structure according to claim 1 supports, it is characterized in that parallel arranged between described single-beam body and extend along the length direction of porous spandrel girder, one outer wall corner of each single-beam body is provided with protuberance, the opposite side outer wall is provided with the recess that cooperates with it, and the recess of single-beam body adjacent one another are cooperates spiral-lock to form described upper beam body with the protuberance of another single-beam body.
5. the porous spandrel girder that steel structure according to claim 4 supports is characterized in that the upper and lower outer wall of described single-beam body extends to a side, forms two protuberances, and the opposite side of described upper and lower outer wall caves inward, and forms two recesses that cooperate with described protuberance.
6. the porous spandrel girder that steel structure according to claim 1 supports, it is characterized in that being equipped with the tension rope in the mesopore of described single-beam body, be strained and fixed between the both ends of the two ends of described tension rope and single-beam body, make the middle part of single-beam body be domes to upper process.
7. the porous spandrel girder that steel structure according to claim 1 supports is characterized in that the domes of described steel framework body for cooperating with the lower surface of upper beam body, and described steel framework body comprises a plurality of parallel arch main members and the steel structure assembly of fixing between it.
8. the porous spandrel girder that steel structure according to claim 1 supports, it is characterized in that the domes of described steel framework body for cooperating with the lower surface of upper beam body, described steel framework body comprises a plurality of steel structure casings that are provided with along the bearing of trend arrangement, and is fixedly connected between described steel structure casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201330386U CN201268825Y (en) | 2008-07-30 | 2008-07-30 | Steel structure supported porous bearing girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201330386U CN201268825Y (en) | 2008-07-30 | 2008-07-30 | Steel structure supported porous bearing girder |
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| Publication Number | Publication Date |
|---|---|
| CN201268825Y true CN201268825Y (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201330386U Expired - Fee Related CN201268825Y (en) | 2008-07-30 | 2008-07-30 | Steel structure supported porous bearing girder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306189A (en) * | 2013-07-04 | 2013-09-18 | 重庆交通大学 | Steel truss-prestressed concrete bridge deck combined bridge girder and construction method thereof |
| CN105887682A (en) * | 2015-01-26 | 2016-08-24 | 任丘市永基建筑安装工程有限公司 | Steel bow bridge casting and concrete construction technology |
-
2008
- 2008-07-30 CN CNU2008201330386U patent/CN201268825Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306189A (en) * | 2013-07-04 | 2013-09-18 | 重庆交通大学 | Steel truss-prestressed concrete bridge deck combined bridge girder and construction method thereof |
| CN103306189B (en) * | 2013-07-04 | 2015-06-10 | 重庆交通大学 | Steel truss-prestressed concrete bridge deck combined bridge girder and construction method thereof |
| CN105887682A (en) * | 2015-01-26 | 2016-08-24 | 任丘市永基建筑安装工程有限公司 | Steel bow bridge casting and concrete construction technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20120730 |