CN202416157U - Plate girder combined beam for concrete structure box - Google Patents
Plate girder combined beam for concrete structure box Download PDFInfo
- Publication number
- CN202416157U CN202416157U CN2011204946743U CN201120494674U CN202416157U CN 202416157 U CN202416157 U CN 202416157U CN 2011204946743 U CN2011204946743 U CN 2011204946743U CN 201120494674 U CN201120494674 U CN 201120494674U CN 202416157 U CN202416157 U CN 202416157U
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- diaphragm
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- prestressed strand
- concrete structure
- inclination
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Abstract
The utility model provides a plate girder combined beam for a concrete structure box, which aims to transmit huge concentrated force, can transmit the huge concentrated force to a load-carrying component in a uniform dispersion manner, and does not excessively increase the construction cost. The plate girder combined beam comprises a box-shaped cross beam which is internally and fixedly connected with a load-carrying body (10); the box-shaped cross beam comprises a top plate (21), a bottom plate (22), cross separation plates (23a, 23b) at two ends and web plates (24a, 24b) at two edges. The plate girder combined beam is characterized in that an inner space of the box-shaped cross beam is provided with a middle web plate (25) and the inclined cross separation plates which are arranged in pairs; a girder is composed of the inclined cross separation plates, the middle web plate (25), the top plate (21) and the bottom plate (22), wherein the middle web plate (25) is fixedly connected with the top plate (21), the bottom plate (22) and the cross separation plates (23a, 23b) at the two ends; the inclined cross separation plates are fixedly connected with the top plate (21), the bottom plate (22), the middle web plate (25) and the web plates (24a, 24b) at the two edges; and a pre-stress steel bundle is arranged in the bottom plate (22).
Description
Technical field
The present invention relates to bridge, particularly a kind of concrete structure boxboard purlin compound beam.
Background technology
The box-girder body is with its good stressed advantage; Big such as its cross section torsional rigidity, roof and floor can effectively be resisted positive hogging moment, and it is stressed jointly that load-carrying members and force transferring structure are combined; The cross section utilization rate is high; Economical and practical, job practices maturation and compliance are strong etc., in various structures, have obtained using widely.
But in the girder construction that receives the huge concentrated force of span centre; The traditional concrete box-girder will face following problem: the moment of flexure for the opposing span centre increases needs integral body to add crossbeam body section height, but will make beam body section service efficiency reduce greatly like this; Simultaneously also can make the outward appearance of beam body huger; Also to increase the layout of prestressed strand simultaneously, and all be used to resist beam body dead weight on a lot of degree of these materials, can bring the seriously uneconomical of engineering.
Traditional girder truss bodily form formula then can face following problem: the trussed construction rod member mainly bears a power, laterally torsional rigidity a little less than, and because the existence of tension member all is to adopt steel usually, the compression member of steel truss then is prone to buckle.Therefore, when running into bigger concentrated force, its compression member is controlled bridge design usually, and size is very big, causes steel using amount to increase severely.Its loaded down with trivial details outward appearance has also restricted the application of trussed construction form simultaneously.
Therefore, prior art has been difficult to overcome the difficult problem that the huge concentrated force of beam body span centre transmits.
Summary of the invention
Technical problem to be solved by this invention provides a kind of concrete structure boxboard purlin compound beam, can transmit huge concentrated force, with its finely dispersed being delivered in the supporting member, does not excessively increase construction costs simultaneously again.
The technical solution adopted for the present invention to solve the technical problems is following:
Concrete structure boxboard of the present invention purlin compound beam; Comprise with weight body fixed for the box-shaped beam of one; Box-shaped beam comprises top board, base plate, two ends diaphragm and both sides web; It is characterized in that: said box-shaped beam inner space is provided with median ventral plate and the inclination diaphragm that is provided with in pairs, and top board, base plate, inclination diaphragm and median ventral plate constitute space truss, wherein; Median ventral plate and top board, base plate and two ends diaphragm are fixed, and inclination diaphragm and top board, base plate, median ventral plate and both sides web are fixed; Configuration prestressed strand in the said base plate.
The invention has the beneficial effects as follows; Safe, suitable, economical, attractive in appearance and construct feasible; Can effectively solve the dispersion problem of transmission of huge concentrated force,, give full play to the stressed advantage of concrete material through putting oblique diaphragm plate to concrete box is indoor; Huge lateral stiffness between concentrated force and the supporting member is provided, guarantees the safety of structural entity; Satisfying under structural safety, the economic, practical prerequisite, also guaranteeing the durable reliable and outward appearance of structure simultaneously; Because whole Force transmission parts is concrete structure, the flexible processing of its inner space truss can be avoided increasing deck-molding for the moment of flexure of resisting huge concentrated force generation, can save engineering material in a large number, and then save cost; Can improve the cross section service efficiency greatly, it is convenient feasible to construct simultaneously.
Description of drawings
This manual comprises following three width of cloth accompanying drawings:
Fig. 1 is the structural representation of concrete structure boxboard of the present invention purlin compound beam;
Fig. 2 is the laying mode elevational schematic view of prestressed strand in the compound beam of concrete structure boxboard of the present invention purlin;
Fig. 3 is the laying mode floor map of prestressed strand in the compound beam of concrete structure boxboard of the present invention purlin;
Member shown in the figure, toponym and pairing marker number: weight body 10, end-plate 11, top board 21, base plate 22, end diaphragm 23a, end diaphragm 23b, limit web 24a, limit web 24b, median ventral plate 25, main inclination diaphragm 26a, main inclination diaphragm 26b, inferior inclination diaphragm 26c, inferior inclination diaphragm 26d, first group of prestressed strand 30, second group of prestressed strand 30a, the 3rd group of prestressed strand 30b.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
With reference to Fig. 1 and Fig. 3, concrete structure boxboard purlin compound beam comprises with weight body 10 is fixed being the box-shaped beam of one that box-shaped beam comprises top board 21, base plate 22, two ends diaphragm 23a, 23b and both sides web 24a, 24b.Said box-shaped beam inner space is provided with median ventral plate 25 and the inclination diaphragm that is provided with in pairs; Inclination diaphragm and median ventral plate 25, top board 21, base plate 22 constitute truss; Wherein, Median ventral plate 25 and top board 21, base plate 22 and two ends diaphragm 23a, 23b are fixed, and inclination diaphragm and top board 21, base plate 22, median ventral plate 25 and both sides web 24a, 24b are fixed, and 22 dispose prestressed strands in the said base plate.
With reference to Fig. 1, said inclination diaphragm comprises a pair of main inclination diaphragm 26a, 26b, and this is to main inclination diaphragm 26a, 26b upper end and the stress point of top board 21 fixed positions for the huge concentrated force of transmission, and its underpart is outward-dipping.Said inclination diaphragm also comprises a pair of main inclination diaphragm 26a, 26b side outer inferior inclination diaphragm 26c, the 26d of laying respectively at, this to inferior inclination diaphragm 26c, 26d with respect to main inclination diaphragm 26a, 26b reversed dip.
With reference to Fig. 2 and Fig. 3, said prestressed strand comprises the first group of prestressed strand 30 that is configured in median ventral plate 25 belows, the two ends of this first group of prestressed strand 30 respectively with two ends diaphragm 23a, 23b anchoring.Said prestressed strand comprise be configured in corresponding base plate 22 places, both sides web 24a, 24b below) second group of prestress steel 30a, the 3rd group of prestressed strand 30b, the two ends of this second group of prestressed strand 30a, the 3rd group of prestressed strand 30b respectively with crossbeam two side ends shrouding 11 anchorings on weight body 10 tops.
The present invention no matter from safe, practical, economical or attractive in appearance on, have following incomparable advantage compared with prior art:
1) the present invention is a concrete structure boxboard purlin compound beam body with Force transmission parts king-post beam design; Built-in oblique diaphragm plate on the basis of conventional boxes chamber; And mostly it be the space truss member; The huge concentrated force that the cat head saddle transmits can be passed on the supporting member king-post of bottom through the oblique diaphragm plate in the crossbeam is smooth-going, thereby has solved the smooth-going problem of transmission of dispersion of huge concentrated force.
2) Force transmission parts is a concrete structure boxboard purlin compound beam; Case chamber and built-in oblique diaphragm plate are concrete material; Huge concentrated force reaches on the crossbeam; Tiltedly the diaphragm plate is a pressured state, thereby has given full play to the stressed advantage of concrete material, has improved the cross section service efficiency of box-girder body simultaneously greatly.
3) utilize finite element structural analysis theory commonly used to be configured suitable prestressed strand; Like Fig. 5 ~ shown in Figure 7; Can guarantee the stressed safety of Force transmission parts; Adopt the limit to discharge concentrated force limit stretch-drawing beam prestressed strand in the construction, given full play to the supporting capacity of beam structure, easy construction is feasible.
4) concrete box chamber and oblique diaphragm plate are combined; Add prestressed configuration; Whole crossbeam through concreting forms for enough lateral stiffnesses are provided between huge concentrated force and the supporting member, has disperseed the concentrated stress at king-post top; Balance the stress of whole king-post, and then guaranteed the security reliability of bridge tower and even full bridge structure.
The present invention is on conventional boxes beam basis; Reach concrete box purlin compound beam flexibly and guaranteed safe, the economic, practical purpose of structure, also realized the effect attractive in appearance of structure simultaneously, made engineering economy feasible; Durable being suitable for efficiently solves the problem of transmission of huge concentrated force.
Some principles of the above concrete structure boxboard of the present invention purlin compound beam that just explains through diagrams; Be not be to the present invention be confined to shown in described concrete structure and the scope of application in; So every the modify and equivalent that might be utilized, the claim that all belongs to the present invention and applied for.
Claims (5)
1. concrete structure boxboard purlin compound beam; Comprise with weight body (10) is fixed and be the box-shaped beam of one; Box-shaped beam comprises top board (21), base plate (22), two ends diaphragm (23a, 23b) and both sides web (24a, 24b); It is characterized in that: the inclination diaphragm that said box-shaped beam inner space is provided with median ventral plate (25) and is provided with in pairs; Inclination diaphragm and median ventral plate (25), top board (21), base plate (22) constitute truss; Wherein, median ventral plate (25) is fixed with top board (21), base plate (22) and two ends diaphragm (23a, 23b), and inclination diaphragm and top board (21), base plate (22), median ventral plate (25) and both sides web (24a, 24b) are fixed; (22) configuration prestressed strand in the said base plate.
2. concrete structure boxboard as claimed in claim 1 purlin compound beam; It is characterized in that: said inclination diaphragm comprises a pair of main inclination diaphragm (26a, 26b); This is to main inclination diaphragm (26a, 26b) upper end and the stress point of the fixed position of top board (21) for the huge concentrated force of transmission, and its underpart is outward-dipping.
3. concrete structure boxboard as claimed in claim 2 purlin compound beam; It is characterized in that: said inclination diaphragm also comprises a pair of outer inferior inclination diaphragm (26c, 26d) of main inclination diaphragm (26a, 26b) side that lays respectively at, this to inferior inclination diaphragm (26c, 26d) with respect to main inclination diaphragm (26a, 26b) reversed dip.
4. like claim 2 or 3 described concrete structure boxboard purlin compound beams; It is characterized in that: said prestressed strand comprises the first group of prestressed strand (30) that is configured in median ventral plate (25) below, the two ends of this first group of prestressed strand (30) respectively with two ends diaphragm (23a, 23b) anchoring.
5. concrete structure boxboard as claimed in claim 4 purlin compound beam; It is characterized in that: said prestressed strand comprises and is configured in second group of prestressed strand (30a), the 3rd group of prestressed strand (30b) that the corresponding base plate in both sides web (24a, 24b) below (22) is located, the two ends of this second group of prestressed strand (30a), the 3rd group of prestressed strand (30b) respectively with crossbeam two side ends shrouding (11) anchoring on weight body (10) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204946743U CN202416157U (en) | 2011-12-02 | 2011-12-02 | Plate girder combined beam for concrete structure box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204946743U CN202416157U (en) | 2011-12-02 | 2011-12-02 | Plate girder combined beam for concrete structure box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202416157U true CN202416157U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204946743U Withdrawn - After Issue CN202416157U (en) | 2011-12-02 | 2011-12-02 | Plate girder combined beam for concrete structure box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202416157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409602A (en) * | 2011-12-02 | 2012-04-11 | 四川西南交大土木工程设计有限公司 | Concrete structure box, plate and joist combined beam |
-
2011
- 2011-12-02 CN CN2011204946743U patent/CN202416157U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409602A (en) * | 2011-12-02 | 2012-04-11 | 四川西南交大土木工程设计有限公司 | Concrete structure box, plate and joist combined beam |
| CN102409602B (en) * | 2011-12-02 | 2013-12-04 | 四川西南交大土木工程设计有限公司 | Concrete structure box, plate and joist combined beam |
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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: 20120905 Effective date of abandoning: 20131204 |
|
| RGAV | Abandon patent right to avoid regrant |